Queue up, please! Spermathecal filling in the rove beetle Drusilla canaliculata (Coleoptera, Staphylinidae)

Abstract Most studies on insect sperm motility have been conducted in vitro using artificial environments outside the animal’s body. Only little is known about the function of motile insect sperm at different sites within the male or female genital tracts. We dissected genital tracts of female rove...
Ausführliche Beschreibung

Gespeichert in:

Autor*in:	Werner, Michael [verfasserIn] Gack, Claudia Speck, Thomas Peschke, Klaus

Format:	Artikel
Sprache:	Englisch

Erschienen:	2007

Schlagwörter:	Insect sperm motility Sperm motility pattern Active sperm migration Sperm morphology Sperm length

Anmerkung:	© Springer-Verlag 2007

Übergeordnetes Werk:	Enthalten in: The science of nature - Springer-Verlag, 1913, 94(2007), 10 vom: 17. Mai, Seite 837-841
Übergeordnetes Werk:	volume:94 ; year:2007 ; number:10 ; day:17 ; month:05 ; pages:837-841

Links:	Volltext

DOI / URN:	10.1007/s00114-007-0257-8

Katalog-ID:	OLC2065169737

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520			\|a Abstract Most studies on insect sperm motility have been conducted in vitro using artificial environments outside the animal’s body. Only little is known about the function of motile insect sperm at different sites within the male or female genital tracts. We dissected genital tracts of female rove beetles (Drusilla canaliculata) to show that spermatozoa use their own motility to migrate from the spermatophore into the spermatheca. Our dissection method allowed direct observation and filming of the spermathecal filling process inside the female’s genital tract. Spermatozoa were found to enter the spermatheca individually, sometimes in groups of two or three. Although exhibiting only weak motility and no progressive motion in buffer solution, the spermatozoa inside the female show vigorous lashing and reach an average velocity of 47.5 μm $ s^{−1} $. To gain mobility and speed, the spermatozoa likely utilize the relatively small diameter of the spermathecal duct to push themselves off the duct walls, rather than swimming freely in seminal fluid. The spermatozoa (approximately 1,250 μm) are considerably longer than the distance they have to travel along the spermathecal duct (approximately 800 μm). Our study provides the first direct observation of active sperm migration within the female of an insect stressing the importance of the genital tract as a prerequisite for functional sperm motility.
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allfields	10.1007/s00114-007-0257-8 doi (DE-627)OLC2065169737 (DE-He213)s00114-007-0257-8-p DE-627 ger DE-627 rakwb eng 500 VZ 500 VZ 11 ssgn Werner, Michael verfasserin aut Queue up, please! Spermathecal filling in the rove beetle Drusilla canaliculata (Coleoptera, Staphylinidae) 2007 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © Springer-Verlag 2007 Abstract Most studies on insect sperm motility have been conducted in vitro using artificial environments outside the animal’s body. Only little is known about the function of motile insect sperm at different sites within the male or female genital tracts. We dissected genital tracts of female rove beetles (Drusilla canaliculata) to show that spermatozoa use their own motility to migrate from the spermatophore into the spermatheca. Our dissection method allowed direct observation and filming of the spermathecal filling process inside the female’s genital tract. Spermatozoa were found to enter the spermatheca individually, sometimes in groups of two or three. Although exhibiting only weak motility and no progressive motion in buffer solution, the spermatozoa inside the female show vigorous lashing and reach an average velocity of 47.5 μm $ s^{−1} $. To gain mobility and speed, the spermatozoa likely utilize the relatively small diameter of the spermathecal duct to push themselves off the duct walls, rather than swimming freely in seminal fluid. The spermatozoa (approximately 1,250 μm) are considerably longer than the distance they have to travel along the spermathecal duct (approximately 800 μm). Our study provides the first direct observation of active sperm migration within the female of an insect stressing the importance of the genital tract as a prerequisite for functional sperm motility. Insect sperm motility Sperm motility pattern Active sperm migration Sperm morphology Sperm length Gack, Claudia aut Speck, Thomas aut Peschke, Klaus aut Enthalten in The science of nature Springer-Verlag, 1913 94(2007), 10 vom: 17. Mai, Seite 837-841 (DE-627)129301744 (DE-600)123257-5 (DE-576)014494930 0028-1042 nnns volume:94 year:2007 number:10 day:17 month:05 pages:837-841 https://doi.org/10.1007/s00114-007-0257-8 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-PHY SSG-OLC-CHE SSG-OLC-MAT SSG-OLC-PHA SSG-OLC-DE-84 SSG-OPC-FOR GBV_ILN_11 GBV_ILN_21 GBV_ILN_22 GBV_ILN_24 GBV_ILN_30 GBV_ILN_31 GBV_ILN_34 GBV_ILN_40 GBV_ILN_55 GBV_ILN_62 GBV_ILN_65 GBV_ILN_70 GBV_ILN_73 GBV_ILN_100 GBV_ILN_105 GBV_ILN_130 GBV_ILN_150 GBV_ILN_154 GBV_ILN_160 GBV_ILN_170 GBV_ILN_188 GBV_ILN_209 GBV_ILN_259 GBV_ILN_602 GBV_ILN_2003 GBV_ILN_2006 GBV_ILN_2007 GBV_ILN_2010 GBV_ILN_2012 GBV_ILN_2015 GBV_ILN_2018 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2027 GBV_ILN_2031 GBV_ILN_2038 GBV_ILN_2173 GBV_ILN_2190 GBV_ILN_2279 GBV_ILN_2360 GBV_ILN_2410 GBV_ILN_4012 GBV_ILN_4028 GBV_ILN_4029 GBV_ILN_4046 GBV_ILN_4082 GBV_ILN_4103 GBV_ILN_4112 GBV_ILN_4116 GBV_ILN_4125 GBV_ILN_4193 GBV_ILN_4219 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4266 GBV_ILN_4277 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4318 GBV_ILN_4319 GBV_ILN_4320 GBV_ILN_4346 GBV_ILN_4385 AR 94 2007 10 17 05 837-841
spelling	10.1007/s00114-007-0257-8 doi (DE-627)OLC2065169737 (DE-He213)s00114-007-0257-8-p DE-627 ger DE-627 rakwb eng 500 VZ 500 VZ 11 ssgn Werner, Michael verfasserin aut Queue up, please! Spermathecal filling in the rove beetle Drusilla canaliculata (Coleoptera, Staphylinidae) 2007 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © Springer-Verlag 2007 Abstract Most studies on insect sperm motility have been conducted in vitro using artificial environments outside the animal’s body. Only little is known about the function of motile insect sperm at different sites within the male or female genital tracts. We dissected genital tracts of female rove beetles (Drusilla canaliculata) to show that spermatozoa use their own motility to migrate from the spermatophore into the spermatheca. Our dissection method allowed direct observation and filming of the spermathecal filling process inside the female’s genital tract. Spermatozoa were found to enter the spermatheca individually, sometimes in groups of two or three. Although exhibiting only weak motility and no progressive motion in buffer solution, the spermatozoa inside the female show vigorous lashing and reach an average velocity of 47.5 μm $ s^{−1} $. To gain mobility and speed, the spermatozoa likely utilize the relatively small diameter of the spermathecal duct to push themselves off the duct walls, rather than swimming freely in seminal fluid. The spermatozoa (approximately 1,250 μm) are considerably longer than the distance they have to travel along the spermathecal duct (approximately 800 μm). Our study provides the first direct observation of active sperm migration within the female of an insect stressing the importance of the genital tract as a prerequisite for functional sperm motility. Insect sperm motility Sperm motility pattern Active sperm migration Sperm morphology Sperm length Gack, Claudia aut Speck, Thomas aut Peschke, Klaus aut Enthalten in The science of nature Springer-Verlag, 1913 94(2007), 10 vom: 17. Mai, Seite 837-841 (DE-627)129301744 (DE-600)123257-5 (DE-576)014494930 0028-1042 nnns volume:94 year:2007 number:10 day:17 month:05 pages:837-841 https://doi.org/10.1007/s00114-007-0257-8 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-PHY SSG-OLC-CHE SSG-OLC-MAT SSG-OLC-PHA SSG-OLC-DE-84 SSG-OPC-FOR GBV_ILN_11 GBV_ILN_21 GBV_ILN_22 GBV_ILN_24 GBV_ILN_30 GBV_ILN_31 GBV_ILN_34 GBV_ILN_40 GBV_ILN_55 GBV_ILN_62 GBV_ILN_65 GBV_ILN_70 GBV_ILN_73 GBV_ILN_100 GBV_ILN_105 GBV_ILN_130 GBV_ILN_150 GBV_ILN_154 GBV_ILN_160 GBV_ILN_170 GBV_ILN_188 GBV_ILN_209 GBV_ILN_259 GBV_ILN_602 GBV_ILN_2003 GBV_ILN_2006 GBV_ILN_2007 GBV_ILN_2010 GBV_ILN_2012 GBV_ILN_2015 GBV_ILN_2018 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2027 GBV_ILN_2031 GBV_ILN_2038 GBV_ILN_2173 GBV_ILN_2190 GBV_ILN_2279 GBV_ILN_2360 GBV_ILN_2410 GBV_ILN_4012 GBV_ILN_4028 GBV_ILN_4029 GBV_ILN_4046 GBV_ILN_4082 GBV_ILN_4103 GBV_ILN_4112 GBV_ILN_4116 GBV_ILN_4125 GBV_ILN_4193 GBV_ILN_4219 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4266 GBV_ILN_4277 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4318 GBV_ILN_4319 GBV_ILN_4320 GBV_ILN_4346 GBV_ILN_4385 AR 94 2007 10 17 05 837-841
allfields_unstemmed	10.1007/s00114-007-0257-8 doi (DE-627)OLC2065169737 (DE-He213)s00114-007-0257-8-p DE-627 ger DE-627 rakwb eng 500 VZ 500 VZ 11 ssgn Werner, Michael verfasserin aut Queue up, please! Spermathecal filling in the rove beetle Drusilla canaliculata (Coleoptera, Staphylinidae) 2007 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © Springer-Verlag 2007 Abstract Most studies on insect sperm motility have been conducted in vitro using artificial environments outside the animal’s body. Only little is known about the function of motile insect sperm at different sites within the male or female genital tracts. We dissected genital tracts of female rove beetles (Drusilla canaliculata) to show that spermatozoa use their own motility to migrate from the spermatophore into the spermatheca. Our dissection method allowed direct observation and filming of the spermathecal filling process inside the female’s genital tract. Spermatozoa were found to enter the spermatheca individually, sometimes in groups of two or three. Although exhibiting only weak motility and no progressive motion in buffer solution, the spermatozoa inside the female show vigorous lashing and reach an average velocity of 47.5 μm $ s^{−1} $. To gain mobility and speed, the spermatozoa likely utilize the relatively small diameter of the spermathecal duct to push themselves off the duct walls, rather than swimming freely in seminal fluid. The spermatozoa (approximately 1,250 μm) are considerably longer than the distance they have to travel along the spermathecal duct (approximately 800 μm). Our study provides the first direct observation of active sperm migration within the female of an insect stressing the importance of the genital tract as a prerequisite for functional sperm motility. Insect sperm motility Sperm motility pattern Active sperm migration Sperm morphology Sperm length Gack, Claudia aut Speck, Thomas aut Peschke, Klaus aut Enthalten in The science of nature Springer-Verlag, 1913 94(2007), 10 vom: 17. Mai, Seite 837-841 (DE-627)129301744 (DE-600)123257-5 (DE-576)014494930 0028-1042 nnns volume:94 year:2007 number:10 day:17 month:05 pages:837-841 https://doi.org/10.1007/s00114-007-0257-8 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-PHY SSG-OLC-CHE SSG-OLC-MAT SSG-OLC-PHA SSG-OLC-DE-84 SSG-OPC-FOR GBV_ILN_11 GBV_ILN_21 GBV_ILN_22 GBV_ILN_24 GBV_ILN_30 GBV_ILN_31 GBV_ILN_34 GBV_ILN_40 GBV_ILN_55 GBV_ILN_62 GBV_ILN_65 GBV_ILN_70 GBV_ILN_73 GBV_ILN_100 GBV_ILN_105 GBV_ILN_130 GBV_ILN_150 GBV_ILN_154 GBV_ILN_160 GBV_ILN_170 GBV_ILN_188 GBV_ILN_209 GBV_ILN_259 GBV_ILN_602 GBV_ILN_2003 GBV_ILN_2006 GBV_ILN_2007 GBV_ILN_2010 GBV_ILN_2012 GBV_ILN_2015 GBV_ILN_2018 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2027 GBV_ILN_2031 GBV_ILN_2038 GBV_ILN_2173 GBV_ILN_2190 GBV_ILN_2279 GBV_ILN_2360 GBV_ILN_2410 GBV_ILN_4012 GBV_ILN_4028 GBV_ILN_4029 GBV_ILN_4046 GBV_ILN_4082 GBV_ILN_4103 GBV_ILN_4112 GBV_ILN_4116 GBV_ILN_4125 GBV_ILN_4193 GBV_ILN_4219 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4266 GBV_ILN_4277 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4318 GBV_ILN_4319 GBV_ILN_4320 GBV_ILN_4346 GBV_ILN_4385 AR 94 2007 10 17 05 837-841
allfieldsGer	10.1007/s00114-007-0257-8 doi (DE-627)OLC2065169737 (DE-He213)s00114-007-0257-8-p DE-627 ger DE-627 rakwb eng 500 VZ 500 VZ 11 ssgn Werner, Michael verfasserin aut Queue up, please! Spermathecal filling in the rove beetle Drusilla canaliculata (Coleoptera, Staphylinidae) 2007 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © Springer-Verlag 2007 Abstract Most studies on insect sperm motility have been conducted in vitro using artificial environments outside the animal’s body. Only little is known about the function of motile insect sperm at different sites within the male or female genital tracts. We dissected genital tracts of female rove beetles (Drusilla canaliculata) to show that spermatozoa use their own motility to migrate from the spermatophore into the spermatheca. Our dissection method allowed direct observation and filming of the spermathecal filling process inside the female’s genital tract. Spermatozoa were found to enter the spermatheca individually, sometimes in groups of two or three. Although exhibiting only weak motility and no progressive motion in buffer solution, the spermatozoa inside the female show vigorous lashing and reach an average velocity of 47.5 μm $ s^{−1} $. To gain mobility and speed, the spermatozoa likely utilize the relatively small diameter of the spermathecal duct to push themselves off the duct walls, rather than swimming freely in seminal fluid. The spermatozoa (approximately 1,250 μm) are considerably longer than the distance they have to travel along the spermathecal duct (approximately 800 μm). Our study provides the first direct observation of active sperm migration within the female of an insect stressing the importance of the genital tract as a prerequisite for functional sperm motility. Insect sperm motility Sperm motility pattern Active sperm migration Sperm morphology Sperm length Gack, Claudia aut Speck, Thomas aut Peschke, Klaus aut Enthalten in The science of nature Springer-Verlag, 1913 94(2007), 10 vom: 17. Mai, Seite 837-841 (DE-627)129301744 (DE-600)123257-5 (DE-576)014494930 0028-1042 nnns volume:94 year:2007 number:10 day:17 month:05 pages:837-841 https://doi.org/10.1007/s00114-007-0257-8 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-PHY SSG-OLC-CHE SSG-OLC-MAT SSG-OLC-PHA SSG-OLC-DE-84 SSG-OPC-FOR GBV_ILN_11 GBV_ILN_21 GBV_ILN_22 GBV_ILN_24 GBV_ILN_30 GBV_ILN_31 GBV_ILN_34 GBV_ILN_40 GBV_ILN_55 GBV_ILN_62 GBV_ILN_65 GBV_ILN_70 GBV_ILN_73 GBV_ILN_100 GBV_ILN_105 GBV_ILN_130 GBV_ILN_150 GBV_ILN_154 GBV_ILN_160 GBV_ILN_170 GBV_ILN_188 GBV_ILN_209 GBV_ILN_259 GBV_ILN_602 GBV_ILN_2003 GBV_ILN_2006 GBV_ILN_2007 GBV_ILN_2010 GBV_ILN_2012 GBV_ILN_2015 GBV_ILN_2018 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2027 GBV_ILN_2031 GBV_ILN_2038 GBV_ILN_2173 GBV_ILN_2190 GBV_ILN_2279 GBV_ILN_2360 GBV_ILN_2410 GBV_ILN_4012 GBV_ILN_4028 GBV_ILN_4029 GBV_ILN_4046 GBV_ILN_4082 GBV_ILN_4103 GBV_ILN_4112 GBV_ILN_4116 GBV_ILN_4125 GBV_ILN_4193 GBV_ILN_4219 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4266 GBV_ILN_4277 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4318 GBV_ILN_4319 GBV_ILN_4320 GBV_ILN_4346 GBV_ILN_4385 AR 94 2007 10 17 05 837-841
allfieldsSound	10.1007/s00114-007-0257-8 doi (DE-627)OLC2065169737 (DE-He213)s00114-007-0257-8-p DE-627 ger DE-627 rakwb eng 500 VZ 500 VZ 11 ssgn Werner, Michael verfasserin aut Queue up, please! Spermathecal filling in the rove beetle Drusilla canaliculata (Coleoptera, Staphylinidae) 2007 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © Springer-Verlag 2007 Abstract Most studies on insect sperm motility have been conducted in vitro using artificial environments outside the animal’s body. Only little is known about the function of motile insect sperm at different sites within the male or female genital tracts. We dissected genital tracts of female rove beetles (Drusilla canaliculata) to show that spermatozoa use their own motility to migrate from the spermatophore into the spermatheca. Our dissection method allowed direct observation and filming of the spermathecal filling process inside the female’s genital tract. Spermatozoa were found to enter the spermatheca individually, sometimes in groups of two or three. Although exhibiting only weak motility and no progressive motion in buffer solution, the spermatozoa inside the female show vigorous lashing and reach an average velocity of 47.5 μm $ s^{−1} $. To gain mobility and speed, the spermatozoa likely utilize the relatively small diameter of the spermathecal duct to push themselves off the duct walls, rather than swimming freely in seminal fluid. The spermatozoa (approximately 1,250 μm) are considerably longer than the distance they have to travel along the spermathecal duct (approximately 800 μm). Our study provides the first direct observation of active sperm migration within the female of an insect stressing the importance of the genital tract as a prerequisite for functional sperm motility. Insect sperm motility Sperm motility pattern Active sperm migration Sperm morphology Sperm length Gack, Claudia aut Speck, Thomas aut Peschke, Klaus aut Enthalten in The science of nature Springer-Verlag, 1913 94(2007), 10 vom: 17. Mai, Seite 837-841 (DE-627)129301744 (DE-600)123257-5 (DE-576)014494930 0028-1042 nnns volume:94 year:2007 number:10 day:17 month:05 pages:837-841 https://doi.org/10.1007/s00114-007-0257-8 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-PHY SSG-OLC-CHE SSG-OLC-MAT SSG-OLC-PHA SSG-OLC-DE-84 SSG-OPC-FOR GBV_ILN_11 GBV_ILN_21 GBV_ILN_22 GBV_ILN_24 GBV_ILN_30 GBV_ILN_31 GBV_ILN_34 GBV_ILN_40 GBV_ILN_55 GBV_ILN_62 GBV_ILN_65 GBV_ILN_70 GBV_ILN_73 GBV_ILN_100 GBV_ILN_105 GBV_ILN_130 GBV_ILN_150 GBV_ILN_154 GBV_ILN_160 GBV_ILN_170 GBV_ILN_188 GBV_ILN_209 GBV_ILN_259 GBV_ILN_602 GBV_ILN_2003 GBV_ILN_2006 GBV_ILN_2007 GBV_ILN_2010 GBV_ILN_2012 GBV_ILN_2015 GBV_ILN_2018 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2027 GBV_ILN_2031 GBV_ILN_2038 GBV_ILN_2173 GBV_ILN_2190 GBV_ILN_2279 GBV_ILN_2360 GBV_ILN_2410 GBV_ILN_4012 GBV_ILN_4028 GBV_ILN_4029 GBV_ILN_4046 GBV_ILN_4082 GBV_ILN_4103 GBV_ILN_4112 GBV_ILN_4116 GBV_ILN_4125 GBV_ILN_4193 GBV_ILN_4219 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4266 GBV_ILN_4277 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4318 GBV_ILN_4319 GBV_ILN_4320 GBV_ILN_4346 GBV_ILN_4385 AR 94 2007 10 17 05 837-841
language	English
source	Enthalten in The science of nature 94(2007), 10 vom: 17. Mai, Seite 837-841 volume:94 year:2007 number:10 day:17 month:05 pages:837-841
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author	Werner, Michael
spellingShingle	Werner, Michael ddc 500 ssgn 11 misc Insect sperm motility misc Sperm motility pattern misc Active sperm migration misc Sperm morphology misc Sperm length Queue up, please! Spermathecal filling in the rove beetle Drusilla canaliculata (Coleoptera, Staphylinidae)
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title_auth	Queue up, please! Spermathecal filling in the rove beetle Drusilla canaliculata (Coleoptera, Staphylinidae)
abstract	Abstract Most studies on insect sperm motility have been conducted in vitro using artificial environments outside the animal’s body. Only little is known about the function of motile insect sperm at different sites within the male or female genital tracts. We dissected genital tracts of female rove beetles (Drusilla canaliculata) to show that spermatozoa use their own motility to migrate from the spermatophore into the spermatheca. Our dissection method allowed direct observation and filming of the spermathecal filling process inside the female’s genital tract. Spermatozoa were found to enter the spermatheca individually, sometimes in groups of two or three. Although exhibiting only weak motility and no progressive motion in buffer solution, the spermatozoa inside the female show vigorous lashing and reach an average velocity of 47.5 μm $ s^{−1} $. To gain mobility and speed, the spermatozoa likely utilize the relatively small diameter of the spermathecal duct to push themselves off the duct walls, rather than swimming freely in seminal fluid. The spermatozoa (approximately 1,250 μm) are considerably longer than the distance they have to travel along the spermathecal duct (approximately 800 μm). Our study provides the first direct observation of active sperm migration within the female of an insect stressing the importance of the genital tract as a prerequisite for functional sperm motility. © Springer-Verlag 2007
abstractGer	Abstract Most studies on insect sperm motility have been conducted in vitro using artificial environments outside the animal’s body. Only little is known about the function of motile insect sperm at different sites within the male or female genital tracts. We dissected genital tracts of female rove beetles (Drusilla canaliculata) to show that spermatozoa use their own motility to migrate from the spermatophore into the spermatheca. Our dissection method allowed direct observation and filming of the spermathecal filling process inside the female’s genital tract. Spermatozoa were found to enter the spermatheca individually, sometimes in groups of two or three. Although exhibiting only weak motility and no progressive motion in buffer solution, the spermatozoa inside the female show vigorous lashing and reach an average velocity of 47.5 μm $ s^{−1} $. To gain mobility and speed, the spermatozoa likely utilize the relatively small diameter of the spermathecal duct to push themselves off the duct walls, rather than swimming freely in seminal fluid. The spermatozoa (approximately 1,250 μm) are considerably longer than the distance they have to travel along the spermathecal duct (approximately 800 μm). Our study provides the first direct observation of active sperm migration within the female of an insect stressing the importance of the genital tract as a prerequisite for functional sperm motility. © Springer-Verlag 2007
abstract_unstemmed	Abstract Most studies on insect sperm motility have been conducted in vitro using artificial environments outside the animal’s body. Only little is known about the function of motile insect sperm at different sites within the male or female genital tracts. We dissected genital tracts of female rove beetles (Drusilla canaliculata) to show that spermatozoa use their own motility to migrate from the spermatophore into the spermatheca. Our dissection method allowed direct observation and filming of the spermathecal filling process inside the female’s genital tract. Spermatozoa were found to enter the spermatheca individually, sometimes in groups of two or three. Although exhibiting only weak motility and no progressive motion in buffer solution, the spermatozoa inside the female show vigorous lashing and reach an average velocity of 47.5 μm $ s^{−1} $. To gain mobility and speed, the spermatozoa likely utilize the relatively small diameter of the spermathecal duct to push themselves off the duct walls, rather than swimming freely in seminal fluid. The spermatozoa (approximately 1,250 μm) are considerably longer than the distance they have to travel along the spermathecal duct (approximately 800 μm). Our study provides the first direct observation of active sperm migration within the female of an insect stressing the importance of the genital tract as a prerequisite for functional sperm motility. © Springer-Verlag 2007
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title_short	Queue up, please! Spermathecal filling in the rove beetle Drusilla canaliculata (Coleoptera, Staphylinidae)
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Spermathecal filling in the rove beetle Drusilla canaliculata (Coleoptera, Staphylinidae)</subfield></datafield><datafield tag="264" ind1=" " ind2="1"><subfield code="c">2007</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">ohne Hilfsmittel zu benutzen</subfield><subfield code="b">n</subfield><subfield code="2">rdamedia</subfield></datafield><datafield tag="338" ind1=" " ind2=" "><subfield code="a">Band</subfield><subfield code="b">nc</subfield><subfield code="2">rdacarrier</subfield></datafield><datafield tag="500" ind1=" " ind2=" "><subfield code="a">© Springer-Verlag 2007</subfield></datafield><datafield tag="520" ind1=" " ind2=" "><subfield code="a">Abstract Most studies on insect sperm motility have been conducted in vitro using artificial environments outside the animal’s body. Only little is known about the function of motile insect sperm at different sites within the male or female genital tracts. We dissected genital tracts of female rove beetles (Drusilla canaliculata) to show that spermatozoa use their own motility to migrate from the spermatophore into the spermatheca. Our dissection method allowed direct observation and filming of the spermathecal filling process inside the female’s genital tract. Spermatozoa were found to enter the spermatheca individually, sometimes in groups of two or three. Although exhibiting only weak motility and no progressive motion in buffer solution, the spermatozoa inside the female show vigorous lashing and reach an average velocity of 47.5 μm $ s^{−1} $. To gain mobility and speed, the spermatozoa likely utilize the relatively small diameter of the spermathecal duct to push themselves off the duct walls, rather than swimming freely in seminal fluid. The spermatozoa (approximately 1,250 μm) are considerably longer than the distance they have to travel along the spermathecal duct (approximately 800 μm). Our study provides the first direct observation of active sperm migration within the female of an insect stressing the importance of the genital tract as a prerequisite for functional sperm motility.</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">Insect sperm motility</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">Sperm motility pattern</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">Active sperm migration</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">Sperm morphology</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">Sperm length</subfield></datafield><datafield tag="700" ind1="1" ind2=" "><subfield code="a">Gack, Claudia</subfield><subfield code="4">aut</subfield></datafield><datafield tag="700" ind1="1" ind2=" "><subfield code="a">Speck, Thomas</subfield><subfield code="4">aut</subfield></datafield><datafield tag="700" ind1="1" ind2=" "><subfield code="a">Peschke, Klaus</subfield><subfield code="4">aut</subfield></datafield><datafield tag="773" ind1="0" ind2="8"><subfield code="i">Enthalten in</subfield><subfield code="t">The science of nature</subfield><subfield code="d">Springer-Verlag, 1913</subfield><subfield code="g">94(2007), 10 vom: 17. 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