Sperm morphology, and macro and microscopic description of male and female reproductive tract in the North African houbara bustard (Chlamydotis undulata)
Ex-situ conservation programs are useful tools for preserving endangered species, and knowledge of their reproductive physiology is essential for achieving conservation objectives in captive breeding programs. The North African houbara bustard (Chlamydotis undulata) is a vulnerable bird species bred...
Ausführliche Beschreibung
Gespeichert in:
| Autor*in: |
Léna Meunier [verfasserIn] Gabriele Sorci [verfasserIn] Caroline Silva Vieira [verfasserIn] Yves Hingrat [verfasserIn] Michel Saint Jalme [verfasserIn] Janaina Torres Carreira [verfasserIn] |
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| Format: |
E-Artikel |
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| Sprache: |
Englisch |
| Erschienen: |
2024 |
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| Schlagwörter: |
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| Übergeordnetes Werk: |
In: Theriogenology Wild - Elsevier, 2023, 4(2024), Seite 100082- |
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| Übergeordnetes Werk: |
volume:4 ; year:2024 ; pages:100082- |
| Links: |
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| DOI / URN: |
10.1016/j.therwi.2024.100082 |
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| Katalog-ID: |
DOAJ09577632X |
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| 245 | 1 | 0 | |a Sperm morphology, and macro and microscopic description of male and female reproductive tract in the North African houbara bustard (Chlamydotis undulata) |
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| 520 | |a Ex-situ conservation programs are useful tools for preserving endangered species, and knowledge of their reproductive physiology is essential for achieving conservation objectives in captive breeding programs. The North African houbara bustard (Chlamydotis undulata) is a vulnerable bird species bred in captivity to restore its natural populations. To better understand the reproductive biology of this species, we first described the anatomy and histology of the reproductive tracts of male and female North African houbara bustards. We described and classified the normal and abnormal sperm morphologies for the species. The reproductive tracts of males and females were collected during the breeding season (BS) (21 males and 14 females) and the non-breeding season (NBS) (four males and two females). Pictures and measurements of the testes and oviducts were taken, and testis colour was graded from 1 (black) to 6 (white). Organs were fixed and processed for histological analysis, scanning electron microscopy (SEM), and transmission electron microscopy (TEM). The testis, epididymis, oviduct size, testicular capsule thickness, seminiferous tubule (ST) diameter, and histological layers of the oviduct were compared between the BS and NBS groups. Sperm morphometry was evaluated using fixed ejaculates (n=22, from 22 males). Ejaculates (n=417, 166 males) were collected and fixed during the BS, and their morphology and morphometry were evaluated using phase-contrast microscopy. Ejaculate mixes (n=12) were fixed and analysed using SEM and TEM. Overall, the anatomical structure and histology of the male and female reproductive tracts were similar to those of other avian species. The testes were symmetric, and a regression of testis and oviduct size, the thickness of the mucosa and serosa of the oviduct, and ST diameter (p<0.001) were observed during NBS compared with those during BS. Sperm storage structures are located inside the oviduct at the uterovaginal junction and infundibulum. Melanin granules were observed in the interstitial space of the seminiferous epithelium, which explains the testis pigmentation. Melanin was also found in the ovaries and the uterus. Houbara sperm have an elongated nuclear form and a round-shaped acrosome lacking perforatorium and rostrum. Most analysed samples were limitrophe normospermic (normal= 68.5 ± 14.7%), houbara sperm morphology could be classified into eight categories: normal sperm, acrosome, head, midpiece, tail, and teratogenic defects, swollen head, and cytoplasmic droplet. This study provides the first anatomical and histological descriptions of the male and female reproductive tracts of the North African houbara bustard. Further investigation into the functional role of melanin in the testes is warranted. | ||
| 650 | 4 | |a Houbara bustard | |
| 650 | 4 | |a Seasonal breeding | |
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10.1016/j.therwi.2024.100082 doi (DE-627)DOAJ09577632X (DE-599)DOAJfdc6fdc699b74f6cbea5ee9445842dc8 DE-627 ger DE-627 rakwb eng QL1-991 QH471-489 Léna Meunier verfasserin aut Sperm morphology, and macro and microscopic description of male and female reproductive tract in the North African houbara bustard (Chlamydotis undulata) 2024 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Ex-situ conservation programs are useful tools for preserving endangered species, and knowledge of their reproductive physiology is essential for achieving conservation objectives in captive breeding programs. The North African houbara bustard (Chlamydotis undulata) is a vulnerable bird species bred in captivity to restore its natural populations. To better understand the reproductive biology of this species, we first described the anatomy and histology of the reproductive tracts of male and female North African houbara bustards. We described and classified the normal and abnormal sperm morphologies for the species. The reproductive tracts of males and females were collected during the breeding season (BS) (21 males and 14 females) and the non-breeding season (NBS) (four males and two females). Pictures and measurements of the testes and oviducts were taken, and testis colour was graded from 1 (black) to 6 (white). Organs were fixed and processed for histological analysis, scanning electron microscopy (SEM), and transmission electron microscopy (TEM). The testis, epididymis, oviduct size, testicular capsule thickness, seminiferous tubule (ST) diameter, and histological layers of the oviduct were compared between the BS and NBS groups. Sperm morphometry was evaluated using fixed ejaculates (n=22, from 22 males). Ejaculates (n=417, 166 males) were collected and fixed during the BS, and their morphology and morphometry were evaluated using phase-contrast microscopy. Ejaculate mixes (n=12) were fixed and analysed using SEM and TEM. Overall, the anatomical structure and histology of the male and female reproductive tracts were similar to those of other avian species. The testes were symmetric, and a regression of testis and oviduct size, the thickness of the mucosa and serosa of the oviduct, and ST diameter (p<0.001) were observed during NBS compared with those during BS. Sperm storage structures are located inside the oviduct at the uterovaginal junction and infundibulum. Melanin granules were observed in the interstitial space of the seminiferous epithelium, which explains the testis pigmentation. Melanin was also found in the ovaries and the uterus. Houbara sperm have an elongated nuclear form and a round-shaped acrosome lacking perforatorium and rostrum. Most analysed samples were limitrophe normospermic (normal= 68.5 ± 14.7%), houbara sperm morphology could be classified into eight categories: normal sperm, acrosome, head, midpiece, tail, and teratogenic defects, swollen head, and cytoplasmic droplet. This study provides the first anatomical and histological descriptions of the male and female reproductive tracts of the North African houbara bustard. Further investigation into the functional role of melanin in the testes is warranted. Houbara bustard Seasonal breeding Anatomy Histology Reproductive organs Melanin Zoology Reproduction Gabriele Sorci verfasserin aut Caroline Silva Vieira verfasserin aut Yves Hingrat verfasserin aut Michel Saint Jalme verfasserin aut Janaina Torres Carreira verfasserin aut In Theriogenology Wild Elsevier, 2023 4(2024), Seite 100082- (DE-627)1833314891 2773093X nnns volume:4 year:2024 pages:100082- https://doi.org/10.1016/j.therwi.2024.100082 kostenfrei https://doaj.org/article/fdc6fdc699b74f6cbea5ee9445842dc8 kostenfrei http://www.sciencedirect.com/science/article/pii/S2773093X24000138 kostenfrei https://doaj.org/toc/2773-093X Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_20 GBV_ILN_22 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_602 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2007 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2034 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2056 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2088 GBV_ILN_2106 GBV_ILN_2110 GBV_ILN_2112 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_2336 GBV_ILN_2470 GBV_ILN_2507 GBV_ILN_4012 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4393 GBV_ILN_4700 AR 4 2024 100082- |
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10.1016/j.therwi.2024.100082 doi (DE-627)DOAJ09577632X (DE-599)DOAJfdc6fdc699b74f6cbea5ee9445842dc8 DE-627 ger DE-627 rakwb eng QL1-991 QH471-489 Léna Meunier verfasserin aut Sperm morphology, and macro and microscopic description of male and female reproductive tract in the North African houbara bustard (Chlamydotis undulata) 2024 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Ex-situ conservation programs are useful tools for preserving endangered species, and knowledge of their reproductive physiology is essential for achieving conservation objectives in captive breeding programs. The North African houbara bustard (Chlamydotis undulata) is a vulnerable bird species bred in captivity to restore its natural populations. To better understand the reproductive biology of this species, we first described the anatomy and histology of the reproductive tracts of male and female North African houbara bustards. We described and classified the normal and abnormal sperm morphologies for the species. The reproductive tracts of males and females were collected during the breeding season (BS) (21 males and 14 females) and the non-breeding season (NBS) (four males and two females). Pictures and measurements of the testes and oviducts were taken, and testis colour was graded from 1 (black) to 6 (white). Organs were fixed and processed for histological analysis, scanning electron microscopy (SEM), and transmission electron microscopy (TEM). The testis, epididymis, oviduct size, testicular capsule thickness, seminiferous tubule (ST) diameter, and histological layers of the oviduct were compared between the BS and NBS groups. Sperm morphometry was evaluated using fixed ejaculates (n=22, from 22 males). Ejaculates (n=417, 166 males) were collected and fixed during the BS, and their morphology and morphometry were evaluated using phase-contrast microscopy. Ejaculate mixes (n=12) were fixed and analysed using SEM and TEM. Overall, the anatomical structure and histology of the male and female reproductive tracts were similar to those of other avian species. The testes were symmetric, and a regression of testis and oviduct size, the thickness of the mucosa and serosa of the oviduct, and ST diameter (p<0.001) were observed during NBS compared with those during BS. Sperm storage structures are located inside the oviduct at the uterovaginal junction and infundibulum. Melanin granules were observed in the interstitial space of the seminiferous epithelium, which explains the testis pigmentation. Melanin was also found in the ovaries and the uterus. Houbara sperm have an elongated nuclear form and a round-shaped acrosome lacking perforatorium and rostrum. Most analysed samples were limitrophe normospermic (normal= 68.5 ± 14.7%), houbara sperm morphology could be classified into eight categories: normal sperm, acrosome, head, midpiece, tail, and teratogenic defects, swollen head, and cytoplasmic droplet. This study provides the first anatomical and histological descriptions of the male and female reproductive tracts of the North African houbara bustard. Further investigation into the functional role of melanin in the testes is warranted. Houbara bustard Seasonal breeding Anatomy Histology Reproductive organs Melanin Zoology Reproduction Gabriele Sorci verfasserin aut Caroline Silva Vieira verfasserin aut Yves Hingrat verfasserin aut Michel Saint Jalme verfasserin aut Janaina Torres Carreira verfasserin aut In Theriogenology Wild Elsevier, 2023 4(2024), Seite 100082- (DE-627)1833314891 2773093X nnns volume:4 year:2024 pages:100082- https://doi.org/10.1016/j.therwi.2024.100082 kostenfrei https://doaj.org/article/fdc6fdc699b74f6cbea5ee9445842dc8 kostenfrei http://www.sciencedirect.com/science/article/pii/S2773093X24000138 kostenfrei https://doaj.org/toc/2773-093X Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_20 GBV_ILN_22 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_602 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2007 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2034 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2056 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2088 GBV_ILN_2106 GBV_ILN_2110 GBV_ILN_2112 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_2336 GBV_ILN_2470 GBV_ILN_2507 GBV_ILN_4012 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4393 GBV_ILN_4700 AR 4 2024 100082- |
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10.1016/j.therwi.2024.100082 doi (DE-627)DOAJ09577632X (DE-599)DOAJfdc6fdc699b74f6cbea5ee9445842dc8 DE-627 ger DE-627 rakwb eng QL1-991 QH471-489 Léna Meunier verfasserin aut Sperm morphology, and macro and microscopic description of male and female reproductive tract in the North African houbara bustard (Chlamydotis undulata) 2024 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Ex-situ conservation programs are useful tools for preserving endangered species, and knowledge of their reproductive physiology is essential for achieving conservation objectives in captive breeding programs. The North African houbara bustard (Chlamydotis undulata) is a vulnerable bird species bred in captivity to restore its natural populations. To better understand the reproductive biology of this species, we first described the anatomy and histology of the reproductive tracts of male and female North African houbara bustards. We described and classified the normal and abnormal sperm morphologies for the species. The reproductive tracts of males and females were collected during the breeding season (BS) (21 males and 14 females) and the non-breeding season (NBS) (four males and two females). Pictures and measurements of the testes and oviducts were taken, and testis colour was graded from 1 (black) to 6 (white). Organs were fixed and processed for histological analysis, scanning electron microscopy (SEM), and transmission electron microscopy (TEM). The testis, epididymis, oviduct size, testicular capsule thickness, seminiferous tubule (ST) diameter, and histological layers of the oviduct were compared between the BS and NBS groups. Sperm morphometry was evaluated using fixed ejaculates (n=22, from 22 males). Ejaculates (n=417, 166 males) were collected and fixed during the BS, and their morphology and morphometry were evaluated using phase-contrast microscopy. Ejaculate mixes (n=12) were fixed and analysed using SEM and TEM. Overall, the anatomical structure and histology of the male and female reproductive tracts were similar to those of other avian species. The testes were symmetric, and a regression of testis and oviduct size, the thickness of the mucosa and serosa of the oviduct, and ST diameter (p<0.001) were observed during NBS compared with those during BS. Sperm storage structures are located inside the oviduct at the uterovaginal junction and infundibulum. Melanin granules were observed in the interstitial space of the seminiferous epithelium, which explains the testis pigmentation. Melanin was also found in the ovaries and the uterus. Houbara sperm have an elongated nuclear form and a round-shaped acrosome lacking perforatorium and rostrum. Most analysed samples were limitrophe normospermic (normal= 68.5 ± 14.7%), houbara sperm morphology could be classified into eight categories: normal sperm, acrosome, head, midpiece, tail, and teratogenic defects, swollen head, and cytoplasmic droplet. This study provides the first anatomical and histological descriptions of the male and female reproductive tracts of the North African houbara bustard. Further investigation into the functional role of melanin in the testes is warranted. 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We described and classified the normal and abnormal sperm morphologies for the species. The reproductive tracts of males and females were collected during the breeding season (BS) (21 males and 14 females) and the non-breeding season (NBS) (four males and two females). Pictures and measurements of the testes and oviducts were taken, and testis colour was graded from 1 (black) to 6 (white). Organs were fixed and processed for histological analysis, scanning electron microscopy (SEM), and transmission electron microscopy (TEM). The testis, epididymis, oviduct size, testicular capsule thickness, seminiferous tubule (ST) diameter, and histological layers of the oviduct were compared between the BS and NBS groups. Sperm morphometry was evaluated using fixed ejaculates (n=22, from 22 males). Ejaculates (n=417, 166 males) were collected and fixed during the BS, and their morphology and morphometry were evaluated using phase-contrast microscopy. Ejaculate mixes (n=12) were fixed and analysed using SEM and TEM. Overall, the anatomical structure and histology of the male and female reproductive tracts were similar to those of other avian species. The testes were symmetric, and a regression of testis and oviduct size, the thickness of the mucosa and serosa of the oviduct, and ST diameter (p<0.001) were observed during NBS compared with those during BS. Sperm storage structures are located inside the oviduct at the uterovaginal junction and infundibulum. Melanin granules were observed in the interstitial space of the seminiferous epithelium, which explains the testis pigmentation. Melanin was also found in the ovaries and the uterus. Houbara sperm have an elongated nuclear form and a round-shaped acrosome lacking perforatorium and rostrum. Most analysed samples were limitrophe normospermic (normal= 68.5 ± 14.7%), houbara sperm morphology could be classified into eight categories: normal sperm, acrosome, head, midpiece, tail, and teratogenic defects, swollen head, and cytoplasmic droplet. This study provides the first anatomical and histological descriptions of the male and female reproductive tracts of the North African houbara bustard. Further investigation into the functional role of melanin in the testes is warranted. Houbara bustard Seasonal breeding Anatomy Histology Reproductive organs Melanin Zoology Reproduction Gabriele Sorci verfasserin aut Caroline Silva Vieira verfasserin aut Yves Hingrat verfasserin aut Michel Saint Jalme verfasserin aut Janaina Torres Carreira verfasserin aut In Theriogenology Wild Elsevier, 2023 4(2024), Seite 100082- (DE-627)1833314891 2773093X nnns volume:4 year:2024 pages:100082- https://doi.org/10.1016/j.therwi.2024.100082 kostenfrei https://doaj.org/article/fdc6fdc699b74f6cbea5ee9445842dc8 kostenfrei http://www.sciencedirect.com/science/article/pii/S2773093X24000138 kostenfrei https://doaj.org/toc/2773-093X Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_20 GBV_ILN_22 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_602 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2007 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2034 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2056 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2088 GBV_ILN_2106 GBV_ILN_2110 GBV_ILN_2112 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_2336 GBV_ILN_2470 GBV_ILN_2507 GBV_ILN_4012 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4393 GBV_ILN_4700 AR 4 2024 100082- |
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10.1016/j.therwi.2024.100082 doi (DE-627)DOAJ09577632X (DE-599)DOAJfdc6fdc699b74f6cbea5ee9445842dc8 DE-627 ger DE-627 rakwb eng QL1-991 QH471-489 Léna Meunier verfasserin aut Sperm morphology, and macro and microscopic description of male and female reproductive tract in the North African houbara bustard (Chlamydotis undulata) 2024 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Ex-situ conservation programs are useful tools for preserving endangered species, and knowledge of their reproductive physiology is essential for achieving conservation objectives in captive breeding programs. The North African houbara bustard (Chlamydotis undulata) is a vulnerable bird species bred in captivity to restore its natural populations. To better understand the reproductive biology of this species, we first described the anatomy and histology of the reproductive tracts of male and female North African houbara bustards. We described and classified the normal and abnormal sperm morphologies for the species. The reproductive tracts of males and females were collected during the breeding season (BS) (21 males and 14 females) and the non-breeding season (NBS) (four males and two females). Pictures and measurements of the testes and oviducts were taken, and testis colour was graded from 1 (black) to 6 (white). Organs were fixed and processed for histological analysis, scanning electron microscopy (SEM), and transmission electron microscopy (TEM). The testis, epididymis, oviduct size, testicular capsule thickness, seminiferous tubule (ST) diameter, and histological layers of the oviduct were compared between the BS and NBS groups. Sperm morphometry was evaluated using fixed ejaculates (n=22, from 22 males). Ejaculates (n=417, 166 males) were collected and fixed during the BS, and their morphology and morphometry were evaluated using phase-contrast microscopy. Ejaculate mixes (n=12) were fixed and analysed using SEM and TEM. Overall, the anatomical structure and histology of the male and female reproductive tracts were similar to those of other avian species. The testes were symmetric, and a regression of testis and oviduct size, the thickness of the mucosa and serosa of the oviduct, and ST diameter (p<0.001) were observed during NBS compared with those during BS. Sperm storage structures are located inside the oviduct at the uterovaginal junction and infundibulum. Melanin granules were observed in the interstitial space of the seminiferous epithelium, which explains the testis pigmentation. Melanin was also found in the ovaries and the uterus. Houbara sperm have an elongated nuclear form and a round-shaped acrosome lacking perforatorium and rostrum. Most analysed samples were limitrophe normospermic (normal= 68.5 ± 14.7%), houbara sperm morphology could be classified into eight categories: normal sperm, acrosome, head, midpiece, tail, and teratogenic defects, swollen head, and cytoplasmic droplet. This study provides the first anatomical and histological descriptions of the male and female reproductive tracts of the North African houbara bustard. Further investigation into the functional role of melanin in the testes is warranted. Houbara bustard Seasonal breeding Anatomy Histology Reproductive organs Melanin Zoology Reproduction Gabriele Sorci verfasserin aut Caroline Silva Vieira verfasserin aut Yves Hingrat verfasserin aut Michel Saint Jalme verfasserin aut Janaina Torres Carreira verfasserin aut In Theriogenology Wild Elsevier, 2023 4(2024), Seite 100082- (DE-627)1833314891 2773093X nnns volume:4 year:2024 pages:100082- https://doi.org/10.1016/j.therwi.2024.100082 kostenfrei https://doaj.org/article/fdc6fdc699b74f6cbea5ee9445842dc8 kostenfrei http://www.sciencedirect.com/science/article/pii/S2773093X24000138 kostenfrei https://doaj.org/toc/2773-093X Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_20 GBV_ILN_22 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_602 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2007 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2034 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2056 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2088 GBV_ILN_2106 GBV_ILN_2110 GBV_ILN_2112 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_2336 GBV_ILN_2470 GBV_ILN_2507 GBV_ILN_4012 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4393 GBV_ILN_4700 AR 4 2024 100082- |
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Léna Meunier @@aut@@ Gabriele Sorci @@aut@@ Caroline Silva Vieira @@aut@@ Yves Hingrat @@aut@@ Michel Saint Jalme @@aut@@ Janaina Torres Carreira @@aut@@ |
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Léna Meunier |
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Léna Meunier misc QL1-991 misc QH471-489 misc Houbara bustard misc Seasonal breeding misc Anatomy misc Histology misc Reproductive organs misc Melanin misc Zoology misc Reproduction Sperm morphology, and macro and microscopic description of male and female reproductive tract in the North African houbara bustard (Chlamydotis undulata) |
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QL1-991 QH471-489 Sperm morphology, and macro and microscopic description of male and female reproductive tract in the North African houbara bustard (Chlamydotis undulata) Houbara bustard Seasonal breeding Anatomy Histology Reproductive organs Melanin |
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Sperm morphology, and macro and microscopic description of male and female reproductive tract in the North African houbara bustard (Chlamydotis undulata) |
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sperm morphology, and macro and microscopic description of male and female reproductive tract in the north african houbara bustard (chlamydotis undulata) |
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Sperm morphology, and macro and microscopic description of male and female reproductive tract in the North African houbara bustard (Chlamydotis undulata) |
| abstract |
Ex-situ conservation programs are useful tools for preserving endangered species, and knowledge of their reproductive physiology is essential for achieving conservation objectives in captive breeding programs. The North African houbara bustard (Chlamydotis undulata) is a vulnerable bird species bred in captivity to restore its natural populations. To better understand the reproductive biology of this species, we first described the anatomy and histology of the reproductive tracts of male and female North African houbara bustards. We described and classified the normal and abnormal sperm morphologies for the species. The reproductive tracts of males and females were collected during the breeding season (BS) (21 males and 14 females) and the non-breeding season (NBS) (four males and two females). Pictures and measurements of the testes and oviducts were taken, and testis colour was graded from 1 (black) to 6 (white). Organs were fixed and processed for histological analysis, scanning electron microscopy (SEM), and transmission electron microscopy (TEM). The testis, epididymis, oviduct size, testicular capsule thickness, seminiferous tubule (ST) diameter, and histological layers of the oviduct were compared between the BS and NBS groups. Sperm morphometry was evaluated using fixed ejaculates (n=22, from 22 males). Ejaculates (n=417, 166 males) were collected and fixed during the BS, and their morphology and morphometry were evaluated using phase-contrast microscopy. Ejaculate mixes (n=12) were fixed and analysed using SEM and TEM. Overall, the anatomical structure and histology of the male and female reproductive tracts were similar to those of other avian species. The testes were symmetric, and a regression of testis and oviduct size, the thickness of the mucosa and serosa of the oviduct, and ST diameter (p<0.001) were observed during NBS compared with those during BS. Sperm storage structures are located inside the oviduct at the uterovaginal junction and infundibulum. Melanin granules were observed in the interstitial space of the seminiferous epithelium, which explains the testis pigmentation. Melanin was also found in the ovaries and the uterus. Houbara sperm have an elongated nuclear form and a round-shaped acrosome lacking perforatorium and rostrum. Most analysed samples were limitrophe normospermic (normal= 68.5 ± 14.7%), houbara sperm morphology could be classified into eight categories: normal sperm, acrosome, head, midpiece, tail, and teratogenic defects, swollen head, and cytoplasmic droplet. This study provides the first anatomical and histological descriptions of the male and female reproductive tracts of the North African houbara bustard. Further investigation into the functional role of melanin in the testes is warranted. |
| abstractGer |
Ex-situ conservation programs are useful tools for preserving endangered species, and knowledge of their reproductive physiology is essential for achieving conservation objectives in captive breeding programs. The North African houbara bustard (Chlamydotis undulata) is a vulnerable bird species bred in captivity to restore its natural populations. To better understand the reproductive biology of this species, we first described the anatomy and histology of the reproductive tracts of male and female North African houbara bustards. We described and classified the normal and abnormal sperm morphologies for the species. The reproductive tracts of males and females were collected during the breeding season (BS) (21 males and 14 females) and the non-breeding season (NBS) (four males and two females). Pictures and measurements of the testes and oviducts were taken, and testis colour was graded from 1 (black) to 6 (white). Organs were fixed and processed for histological analysis, scanning electron microscopy (SEM), and transmission electron microscopy (TEM). The testis, epididymis, oviduct size, testicular capsule thickness, seminiferous tubule (ST) diameter, and histological layers of the oviduct were compared between the BS and NBS groups. Sperm morphometry was evaluated using fixed ejaculates (n=22, from 22 males). Ejaculates (n=417, 166 males) were collected and fixed during the BS, and their morphology and morphometry were evaluated using phase-contrast microscopy. Ejaculate mixes (n=12) were fixed and analysed using SEM and TEM. Overall, the anatomical structure and histology of the male and female reproductive tracts were similar to those of other avian species. The testes were symmetric, and a regression of testis and oviduct size, the thickness of the mucosa and serosa of the oviduct, and ST diameter (p<0.001) were observed during NBS compared with those during BS. Sperm storage structures are located inside the oviduct at the uterovaginal junction and infundibulum. Melanin granules were observed in the interstitial space of the seminiferous epithelium, which explains the testis pigmentation. Melanin was also found in the ovaries and the uterus. Houbara sperm have an elongated nuclear form and a round-shaped acrosome lacking perforatorium and rostrum. Most analysed samples were limitrophe normospermic (normal= 68.5 ± 14.7%), houbara sperm morphology could be classified into eight categories: normal sperm, acrosome, head, midpiece, tail, and teratogenic defects, swollen head, and cytoplasmic droplet. This study provides the first anatomical and histological descriptions of the male and female reproductive tracts of the North African houbara bustard. Further investigation into the functional role of melanin in the testes is warranted. |
| abstract_unstemmed |
Ex-situ conservation programs are useful tools for preserving endangered species, and knowledge of their reproductive physiology is essential for achieving conservation objectives in captive breeding programs. The North African houbara bustard (Chlamydotis undulata) is a vulnerable bird species bred in captivity to restore its natural populations. To better understand the reproductive biology of this species, we first described the anatomy and histology of the reproductive tracts of male and female North African houbara bustards. We described and classified the normal and abnormal sperm morphologies for the species. The reproductive tracts of males and females were collected during the breeding season (BS) (21 males and 14 females) and the non-breeding season (NBS) (four males and two females). Pictures and measurements of the testes and oviducts were taken, and testis colour was graded from 1 (black) to 6 (white). Organs were fixed and processed for histological analysis, scanning electron microscopy (SEM), and transmission electron microscopy (TEM). The testis, epididymis, oviduct size, testicular capsule thickness, seminiferous tubule (ST) diameter, and histological layers of the oviduct were compared between the BS and NBS groups. Sperm morphometry was evaluated using fixed ejaculates (n=22, from 22 males). Ejaculates (n=417, 166 males) were collected and fixed during the BS, and their morphology and morphometry were evaluated using phase-contrast microscopy. Ejaculate mixes (n=12) were fixed and analysed using SEM and TEM. Overall, the anatomical structure and histology of the male and female reproductive tracts were similar to those of other avian species. The testes were symmetric, and a regression of testis and oviduct size, the thickness of the mucosa and serosa of the oviduct, and ST diameter (p<0.001) were observed during NBS compared with those during BS. Sperm storage structures are located inside the oviduct at the uterovaginal junction and infundibulum. Melanin granules were observed in the interstitial space of the seminiferous epithelium, which explains the testis pigmentation. Melanin was also found in the ovaries and the uterus. Houbara sperm have an elongated nuclear form and a round-shaped acrosome lacking perforatorium and rostrum. Most analysed samples were limitrophe normospermic (normal= 68.5 ± 14.7%), houbara sperm morphology could be classified into eight categories: normal sperm, acrosome, head, midpiece, tail, and teratogenic defects, swollen head, and cytoplasmic droplet. This study provides the first anatomical and histological descriptions of the male and female reproductive tracts of the North African houbara bustard. Further investigation into the functional role of melanin in the testes is warranted. |
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<?xml version="1.0" encoding="UTF-8"?><collection xmlns="http://www.loc.gov/MARC21/slim"><record><leader>01000naa a22002652 4500</leader><controlfield tag="001">DOAJ09577632X</controlfield><controlfield tag="003">DE-627</controlfield><controlfield tag="005">20240413122237.0</controlfield><controlfield tag="007">cr uuu---uuuuu</controlfield><controlfield tag="008">240413s2024 xx |||||o 00| ||eng c</controlfield><datafield tag="024" ind1="7" ind2=" "><subfield code="a">10.1016/j.therwi.2024.100082</subfield><subfield code="2">doi</subfield></datafield><datafield tag="035" ind1=" " ind2=" "><subfield code="a">(DE-627)DOAJ09577632X</subfield></datafield><datafield tag="035" ind1=" " ind2=" "><subfield code="a">(DE-599)DOAJfdc6fdc699b74f6cbea5ee9445842dc8</subfield></datafield><datafield tag="040" ind1=" " ind2=" "><subfield code="a">DE-627</subfield><subfield code="b">ger</subfield><subfield code="c">DE-627</subfield><subfield code="e">rakwb</subfield></datafield><datafield tag="041" ind1=" " ind2=" "><subfield code="a">eng</subfield></datafield><datafield tag="050" ind1=" " ind2="0"><subfield code="a">QL1-991</subfield></datafield><datafield tag="050" ind1=" " ind2="0"><subfield code="a">QH471-489</subfield></datafield><datafield tag="100" ind1="0" ind2=" "><subfield code="a">Léna Meunier</subfield><subfield code="e">verfasserin</subfield><subfield code="4">aut</subfield></datafield><datafield tag="245" ind1="1" ind2="0"><subfield code="a">Sperm morphology, and macro and microscopic description of male and female reproductive tract in the North African houbara bustard (Chlamydotis undulata)</subfield></datafield><datafield tag="264" ind1=" " ind2="1"><subfield code="c">2024</subfield></datafield><datafield tag="336" ind1=" " ind2=" "><subfield code="a">Text</subfield><subfield code="b">txt</subfield><subfield code="2">rdacontent</subfield></datafield><datafield tag="337" ind1=" " ind2=" "><subfield code="a">Computermedien</subfield><subfield code="b">c</subfield><subfield code="2">rdamedia</subfield></datafield><datafield tag="338" ind1=" " ind2=" "><subfield code="a">Online-Ressource</subfield><subfield code="b">cr</subfield><subfield code="2">rdacarrier</subfield></datafield><datafield tag="520" ind1=" " ind2=" "><subfield code="a">Ex-situ conservation programs are useful tools for preserving endangered species, and knowledge of their reproductive physiology is essential for achieving conservation objectives in captive breeding programs. The North African houbara bustard (Chlamydotis undulata) is a vulnerable bird species bred in captivity to restore its natural populations. To better understand the reproductive biology of this species, we first described the anatomy and histology of the reproductive tracts of male and female North African houbara bustards. We described and classified the normal and abnormal sperm morphologies for the species. The reproductive tracts of males and females were collected during the breeding season (BS) (21 males and 14 females) and the non-breeding season (NBS) (four males and two females). Pictures and measurements of the testes and oviducts were taken, and testis colour was graded from 1 (black) to 6 (white). Organs were fixed and processed for histological analysis, scanning electron microscopy (SEM), and transmission electron microscopy (TEM). The testis, epididymis, oviduct size, testicular capsule thickness, seminiferous tubule (ST) diameter, and histological layers of the oviduct were compared between the BS and NBS groups. Sperm morphometry was evaluated using fixed ejaculates (n=22, from 22 males). Ejaculates (n=417, 166 males) were collected and fixed during the BS, and their morphology and morphometry were evaluated using phase-contrast microscopy. Ejaculate mixes (n=12) were fixed and analysed using SEM and TEM. Overall, the anatomical structure and histology of the male and female reproductive tracts were similar to those of other avian species. The testes were symmetric, and a regression of testis and oviduct size, the thickness of the mucosa and serosa of the oviduct, and ST diameter (p<0.001) were observed during NBS compared with those during BS. Sperm storage structures are located inside the oviduct at the uterovaginal junction and infundibulum. Melanin granules were observed in the interstitial space of the seminiferous epithelium, which explains the testis pigmentation. Melanin was also found in the ovaries and the uterus. Houbara sperm have an elongated nuclear form and a round-shaped acrosome lacking perforatorium and rostrum. Most analysed samples were limitrophe normospermic (normal= 68.5 ± 14.7%), houbara sperm morphology could be classified into eight categories: normal sperm, acrosome, head, midpiece, tail, and teratogenic defects, swollen head, and cytoplasmic droplet. This study provides the first anatomical and histological descriptions of the male and female reproductive tracts of the North African houbara bustard. 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