The influence of daily variation in foraging cost on the activity of small carnivores
The daily activity of some predators is correlated with the activity pattern of their prey. If capture efficiency varies as a function of prey activity, a predator that synchronizes its foraging activity with the time of day that prey are most vulnerable should capture more prey, and at lower cost,...
Ausführliche Beschreibung
Gespeichert in:
| Autor*in: |
|---|
| Format: |
E-Artikel |
|---|---|
| Sprache: |
Englisch |
| Erschienen: |
1988 |
|---|
| Reproduktion: |
Elsevier Journal Backfiles on ScienceDirect 1907 - 2002 |
|---|---|
| Übergeordnetes Werk: |
in: Animal Behaviour - Amsterdam : Elsevier, 36(1988), 1, Seite 239-249 |
| Übergeordnetes Werk: |
volume:36 ; year:1988 ; number:1 ; pages:239-249 |
| Links: |
|---|
| Katalog-ID: |
NLEJ18536165X |
|---|
| LEADER | 01000caa a22002652 4500 | ||
|---|---|---|---|
| 001 | NLEJ18536165X | ||
| 003 | DE-627 | ||
| 005 | 20210707014309.0 | ||
| 007 | cr uuu---uuuuu | ||
| 008 | 070506s1988 xx |||||o 00| ||eng c | ||
| 035 | |a (DE-627)NLEJ18536165X | ||
| 035 | |a (DE-599)GBVNLZ18536165X | ||
| 040 | |a DE-627 |b ger |c DE-627 |e rakwb | ||
| 041 | |a eng | ||
| 245 | 1 | 4 | |a The influence of daily variation in foraging cost on the activity of small carnivores |
| 264 | 1 | |c 1988 | |
| 336 | |a nicht spezifiziert |b zzz |2 rdacontent | ||
| 337 | |a nicht spezifiziert |b z |2 rdamedia | ||
| 338 | |a nicht spezifiziert |b zu |2 rdacarrier | ||
| 520 | |a The daily activity of some predators is correlated with the activity pattern of their prey. If capture efficiency varies as a function of prey activity, a predator that synchronizes its foraging activity with the time of day that prey are most vulnerable should capture more prey, and at lower cost, than a predator that initiates foraging at random. Mink, Mustela vison, and weasels, M. erminea and M. nivalis, were presented with an opportunity to maximize their intake in similar circumstances in the laboratory. An animal's ability to synchronize its foraging activity with the time of day when food was most available was tested. Energy costs (wheel revolutions) were varied to encourage an animal to redistribute its activity from a preferred 12-h phase of the light-dark cycle to the other phase, and then back again. The degree to which activity changed to coincide with the most economical phase was analysed for each individual, and weasels were compared to mink. The activity of six (of seven) animals shifted in response to modified foraging costs, but only two animals (both mink) approached the 180^o redistribution of activity expected of an energy-maximizing forager. In general, all animals were active during a favoured phase (usually dark) of the light-dark cycle and relatively large variations in foraging cost during this cycle had only modest effects on activity. | ||
| 533 | |f Elsevier Journal Backfiles on ScienceDirect 1907 - 2002 | ||
| 700 | 1 | |a Zielinski, W.J. |4 oth | |
| 773 | 0 | 8 | |i in |t Animal Behaviour |d Amsterdam : Elsevier |g 36(1988), 1, Seite 239-249 |w (DE-627)NLEJ176893601 |w (DE-600)1461112-0 |x 0003-3472 |7 nnns |
| 773 | 1 | 8 | |g volume:36 |g year:1988 |g number:1 |g pages:239-249 |
| 856 | 4 | 0 | |u http://dx.doi.org/10.1016/S0003-3472(88)80267-7 |
| 912 | |a GBV_USEFLAG_H | ||
| 912 | |a ZDB-1-SDJ | ||
| 912 | |a GBV_NL_ARTICLE | ||
| 951 | |a AR | ||
| 952 | |d 36 |j 1988 |e 1 |h 239-249 | ||
| matchkey_str |
article:00033472:1988----::hifunefalvrainnoaigotnhatvt |
|---|---|
| hierarchy_sort_str |
1988 |
| publishDate |
1988 |
| allfields |
(DE-627)NLEJ18536165X (DE-599)GBVNLZ18536165X DE-627 ger DE-627 rakwb eng The influence of daily variation in foraging cost on the activity of small carnivores 1988 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier The daily activity of some predators is correlated with the activity pattern of their prey. If capture efficiency varies as a function of prey activity, a predator that synchronizes its foraging activity with the time of day that prey are most vulnerable should capture more prey, and at lower cost, than a predator that initiates foraging at random. Mink, Mustela vison, and weasels, M. erminea and M. nivalis, were presented with an opportunity to maximize their intake in similar circumstances in the laboratory. An animal's ability to synchronize its foraging activity with the time of day when food was most available was tested. Energy costs (wheel revolutions) were varied to encourage an animal to redistribute its activity from a preferred 12-h phase of the light-dark cycle to the other phase, and then back again. The degree to which activity changed to coincide with the most economical phase was analysed for each individual, and weasels were compared to mink. The activity of six (of seven) animals shifted in response to modified foraging costs, but only two animals (both mink) approached the 180^o redistribution of activity expected of an energy-maximizing forager. In general, all animals were active during a favoured phase (usually dark) of the light-dark cycle and relatively large variations in foraging cost during this cycle had only modest effects on activity. Elsevier Journal Backfiles on ScienceDirect 1907 - 2002 Zielinski, W.J. oth in Animal Behaviour Amsterdam : Elsevier 36(1988), 1, Seite 239-249 (DE-627)NLEJ176893601 (DE-600)1461112-0 0003-3472 nnns volume:36 year:1988 number:1 pages:239-249 http://dx.doi.org/10.1016/S0003-3472(88)80267-7 GBV_USEFLAG_H ZDB-1-SDJ GBV_NL_ARTICLE AR 36 1988 1 239-249 |
| spelling |
(DE-627)NLEJ18536165X (DE-599)GBVNLZ18536165X DE-627 ger DE-627 rakwb eng The influence of daily variation in foraging cost on the activity of small carnivores 1988 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier The daily activity of some predators is correlated with the activity pattern of their prey. If capture efficiency varies as a function of prey activity, a predator that synchronizes its foraging activity with the time of day that prey are most vulnerable should capture more prey, and at lower cost, than a predator that initiates foraging at random. Mink, Mustela vison, and weasels, M. erminea and M. nivalis, were presented with an opportunity to maximize their intake in similar circumstances in the laboratory. An animal's ability to synchronize its foraging activity with the time of day when food was most available was tested. Energy costs (wheel revolutions) were varied to encourage an animal to redistribute its activity from a preferred 12-h phase of the light-dark cycle to the other phase, and then back again. The degree to which activity changed to coincide with the most economical phase was analysed for each individual, and weasels were compared to mink. The activity of six (of seven) animals shifted in response to modified foraging costs, but only two animals (both mink) approached the 180^o redistribution of activity expected of an energy-maximizing forager. In general, all animals were active during a favoured phase (usually dark) of the light-dark cycle and relatively large variations in foraging cost during this cycle had only modest effects on activity. Elsevier Journal Backfiles on ScienceDirect 1907 - 2002 Zielinski, W.J. oth in Animal Behaviour Amsterdam : Elsevier 36(1988), 1, Seite 239-249 (DE-627)NLEJ176893601 (DE-600)1461112-0 0003-3472 nnns volume:36 year:1988 number:1 pages:239-249 http://dx.doi.org/10.1016/S0003-3472(88)80267-7 GBV_USEFLAG_H ZDB-1-SDJ GBV_NL_ARTICLE AR 36 1988 1 239-249 |
| allfields_unstemmed |
(DE-627)NLEJ18536165X (DE-599)GBVNLZ18536165X DE-627 ger DE-627 rakwb eng The influence of daily variation in foraging cost on the activity of small carnivores 1988 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier The daily activity of some predators is correlated with the activity pattern of their prey. If capture efficiency varies as a function of prey activity, a predator that synchronizes its foraging activity with the time of day that prey are most vulnerable should capture more prey, and at lower cost, than a predator that initiates foraging at random. Mink, Mustela vison, and weasels, M. erminea and M. nivalis, were presented with an opportunity to maximize their intake in similar circumstances in the laboratory. An animal's ability to synchronize its foraging activity with the time of day when food was most available was tested. Energy costs (wheel revolutions) were varied to encourage an animal to redistribute its activity from a preferred 12-h phase of the light-dark cycle to the other phase, and then back again. The degree to which activity changed to coincide with the most economical phase was analysed for each individual, and weasels were compared to mink. The activity of six (of seven) animals shifted in response to modified foraging costs, but only two animals (both mink) approached the 180^o redistribution of activity expected of an energy-maximizing forager. In general, all animals were active during a favoured phase (usually dark) of the light-dark cycle and relatively large variations in foraging cost during this cycle had only modest effects on activity. Elsevier Journal Backfiles on ScienceDirect 1907 - 2002 Zielinski, W.J. oth in Animal Behaviour Amsterdam : Elsevier 36(1988), 1, Seite 239-249 (DE-627)NLEJ176893601 (DE-600)1461112-0 0003-3472 nnns volume:36 year:1988 number:1 pages:239-249 http://dx.doi.org/10.1016/S0003-3472(88)80267-7 GBV_USEFLAG_H ZDB-1-SDJ GBV_NL_ARTICLE AR 36 1988 1 239-249 |
| allfieldsGer |
(DE-627)NLEJ18536165X (DE-599)GBVNLZ18536165X DE-627 ger DE-627 rakwb eng The influence of daily variation in foraging cost on the activity of small carnivores 1988 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier The daily activity of some predators is correlated with the activity pattern of their prey. If capture efficiency varies as a function of prey activity, a predator that synchronizes its foraging activity with the time of day that prey are most vulnerable should capture more prey, and at lower cost, than a predator that initiates foraging at random. Mink, Mustela vison, and weasels, M. erminea and M. nivalis, were presented with an opportunity to maximize their intake in similar circumstances in the laboratory. An animal's ability to synchronize its foraging activity with the time of day when food was most available was tested. Energy costs (wheel revolutions) were varied to encourage an animal to redistribute its activity from a preferred 12-h phase of the light-dark cycle to the other phase, and then back again. The degree to which activity changed to coincide with the most economical phase was analysed for each individual, and weasels were compared to mink. The activity of six (of seven) animals shifted in response to modified foraging costs, but only two animals (both mink) approached the 180^o redistribution of activity expected of an energy-maximizing forager. In general, all animals were active during a favoured phase (usually dark) of the light-dark cycle and relatively large variations in foraging cost during this cycle had only modest effects on activity. Elsevier Journal Backfiles on ScienceDirect 1907 - 2002 Zielinski, W.J. oth in Animal Behaviour Amsterdam : Elsevier 36(1988), 1, Seite 239-249 (DE-627)NLEJ176893601 (DE-600)1461112-0 0003-3472 nnns volume:36 year:1988 number:1 pages:239-249 http://dx.doi.org/10.1016/S0003-3472(88)80267-7 GBV_USEFLAG_H ZDB-1-SDJ GBV_NL_ARTICLE AR 36 1988 1 239-249 |
| allfieldsSound |
(DE-627)NLEJ18536165X (DE-599)GBVNLZ18536165X DE-627 ger DE-627 rakwb eng The influence of daily variation in foraging cost on the activity of small carnivores 1988 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier The daily activity of some predators is correlated with the activity pattern of their prey. If capture efficiency varies as a function of prey activity, a predator that synchronizes its foraging activity with the time of day that prey are most vulnerable should capture more prey, and at lower cost, than a predator that initiates foraging at random. Mink, Mustela vison, and weasels, M. erminea and M. nivalis, were presented with an opportunity to maximize their intake in similar circumstances in the laboratory. An animal's ability to synchronize its foraging activity with the time of day when food was most available was tested. Energy costs (wheel revolutions) were varied to encourage an animal to redistribute its activity from a preferred 12-h phase of the light-dark cycle to the other phase, and then back again. The degree to which activity changed to coincide with the most economical phase was analysed for each individual, and weasels were compared to mink. The activity of six (of seven) animals shifted in response to modified foraging costs, but only two animals (both mink) approached the 180^o redistribution of activity expected of an energy-maximizing forager. In general, all animals were active during a favoured phase (usually dark) of the light-dark cycle and relatively large variations in foraging cost during this cycle had only modest effects on activity. Elsevier Journal Backfiles on ScienceDirect 1907 - 2002 Zielinski, W.J. oth in Animal Behaviour Amsterdam : Elsevier 36(1988), 1, Seite 239-249 (DE-627)NLEJ176893601 (DE-600)1461112-0 0003-3472 nnns volume:36 year:1988 number:1 pages:239-249 http://dx.doi.org/10.1016/S0003-3472(88)80267-7 GBV_USEFLAG_H ZDB-1-SDJ GBV_NL_ARTICLE AR 36 1988 1 239-249 |
| language |
English |
| source |
in Animal Behaviour 36(1988), 1, Seite 239-249 volume:36 year:1988 number:1 pages:239-249 |
| sourceStr |
in Animal Behaviour 36(1988), 1, Seite 239-249 volume:36 year:1988 number:1 pages:239-249 |
| format_phy_str_mv |
Article |
| institution |
findex.gbv.de |
| isfreeaccess_bool |
false |
| container_title |
Animal Behaviour |
| authorswithroles_txt_mv |
Zielinski, W.J. @@oth@@ |
| publishDateDaySort_date |
1988-01-01T00:00:00Z |
| hierarchy_top_id |
NLEJ176893601 |
| id |
NLEJ18536165X |
| language_de |
englisch |
| fullrecord |
<?xml version="1.0" encoding="UTF-8"?><collection xmlns="http://www.loc.gov/MARC21/slim"><record><leader>01000caa a22002652 4500</leader><controlfield tag="001">NLEJ18536165X</controlfield><controlfield tag="003">DE-627</controlfield><controlfield tag="005">20210707014309.0</controlfield><controlfield tag="007">cr uuu---uuuuu</controlfield><controlfield tag="008">070506s1988 xx |||||o 00| ||eng c</controlfield><datafield tag="035" ind1=" " ind2=" "><subfield code="a">(DE-627)NLEJ18536165X</subfield></datafield><datafield tag="035" ind1=" " ind2=" "><subfield code="a">(DE-599)GBVNLZ18536165X</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="245" ind1="1" ind2="4"><subfield code="a">The influence of daily variation in foraging cost on the activity of small carnivores</subfield></datafield><datafield tag="264" ind1=" " ind2="1"><subfield code="c">1988</subfield></datafield><datafield tag="336" ind1=" " ind2=" "><subfield code="a">nicht spezifiziert</subfield><subfield code="b">zzz</subfield><subfield code="2">rdacontent</subfield></datafield><datafield tag="337" ind1=" " ind2=" "><subfield code="a">nicht spezifiziert</subfield><subfield code="b">z</subfield><subfield code="2">rdamedia</subfield></datafield><datafield tag="338" ind1=" " ind2=" "><subfield code="a">nicht spezifiziert</subfield><subfield code="b">zu</subfield><subfield code="2">rdacarrier</subfield></datafield><datafield tag="520" ind1=" " ind2=" "><subfield code="a">The daily activity of some predators is correlated with the activity pattern of their prey. If capture efficiency varies as a function of prey activity, a predator that synchronizes its foraging activity with the time of day that prey are most vulnerable should capture more prey, and at lower cost, than a predator that initiates foraging at random. Mink, Mustela vison, and weasels, M. erminea and M. nivalis, were presented with an opportunity to maximize their intake in similar circumstances in the laboratory. An animal's ability to synchronize its foraging activity with the time of day when food was most available was tested. Energy costs (wheel revolutions) were varied to encourage an animal to redistribute its activity from a preferred 12-h phase of the light-dark cycle to the other phase, and then back again. The degree to which activity changed to coincide with the most economical phase was analysed for each individual, and weasels were compared to mink. The activity of six (of seven) animals shifted in response to modified foraging costs, but only two animals (both mink) approached the 180^o redistribution of activity expected of an energy-maximizing forager. In general, all animals were active during a favoured phase (usually dark) of the light-dark cycle and relatively large variations in foraging cost during this cycle had only modest effects on activity.</subfield></datafield><datafield tag="533" ind1=" " ind2=" "><subfield code="f">Elsevier Journal Backfiles on ScienceDirect 1907 - 2002</subfield></datafield><datafield tag="700" ind1="1" ind2=" "><subfield code="a">Zielinski, W.J.</subfield><subfield code="4">oth</subfield></datafield><datafield tag="773" ind1="0" ind2="8"><subfield code="i">in</subfield><subfield code="t">Animal Behaviour</subfield><subfield code="d">Amsterdam : Elsevier</subfield><subfield code="g">36(1988), 1, Seite 239-249</subfield><subfield code="w">(DE-627)NLEJ176893601</subfield><subfield code="w">(DE-600)1461112-0</subfield><subfield code="x">0003-3472</subfield><subfield code="7">nnns</subfield></datafield><datafield tag="773" ind1="1" ind2="8"><subfield code="g">volume:36</subfield><subfield code="g">year:1988</subfield><subfield code="g">number:1</subfield><subfield code="g">pages:239-249</subfield></datafield><datafield tag="856" ind1="4" ind2="0"><subfield code="u">http://dx.doi.org/10.1016/S0003-3472(88)80267-7</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_USEFLAG_H</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">ZDB-1-SDJ</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_NL_ARTICLE</subfield></datafield><datafield tag="951" ind1=" " ind2=" "><subfield code="a">AR</subfield></datafield><datafield tag="952" ind1=" " ind2=" "><subfield code="d">36</subfield><subfield code="j">1988</subfield><subfield code="e">1</subfield><subfield code="h">239-249</subfield></datafield></record></collection>
|
| series2 |
Elsevier Journal Backfiles on ScienceDirect 1907 - 2002 |
| ppnlink_with_tag_str_mv |
@@773@@(DE-627)NLEJ176893601 |
| format |
electronic Article |
| delete_txt_mv |
keep |
| collection |
NL |
| remote_str |
true |
| illustrated |
Not Illustrated |
| issn |
0003-3472 |
| topic_title |
The influence of daily variation in foraging cost on the activity of small carnivores |
| format_facet |
Elektronische Aufsätze Aufsätze Elektronische Ressource |
| format_main_str_mv |
Text Zeitschrift/Artikel |
| carriertype_str_mv |
zu |
| author2_variant |
w z wz |
| hierarchy_parent_title |
Animal Behaviour |
| hierarchy_parent_id |
NLEJ176893601 |
| hierarchy_top_title |
Animal Behaviour |
| isfreeaccess_txt |
false |
| familylinks_str_mv |
(DE-627)NLEJ176893601 (DE-600)1461112-0 |
| title |
The influence of daily variation in foraging cost on the activity of small carnivores |
| spellingShingle |
The influence of daily variation in foraging cost on the activity of small carnivores |
| ctrlnum |
(DE-627)NLEJ18536165X (DE-599)GBVNLZ18536165X |
| title_full |
The influence of daily variation in foraging cost on the activity of small carnivores |
| journal |
Animal Behaviour |
| journalStr |
Animal Behaviour |
| lang_code |
eng |
| isOA_bool |
false |
| recordtype |
marc |
| publishDateSort |
1988 |
| contenttype_str_mv |
zzz |
| container_start_page |
239 |
| container_volume |
36 |
| format_se |
Elektronische Aufsätze |
| title_sort |
influence of daily variation in foraging cost on the activity of small carnivores |
| title_auth |
The influence of daily variation in foraging cost on the activity of small carnivores |
| abstract |
The daily activity of some predators is correlated with the activity pattern of their prey. If capture efficiency varies as a function of prey activity, a predator that synchronizes its foraging activity with the time of day that prey are most vulnerable should capture more prey, and at lower cost, than a predator that initiates foraging at random. Mink, Mustela vison, and weasels, M. erminea and M. nivalis, were presented with an opportunity to maximize their intake in similar circumstances in the laboratory. An animal's ability to synchronize its foraging activity with the time of day when food was most available was tested. Energy costs (wheel revolutions) were varied to encourage an animal to redistribute its activity from a preferred 12-h phase of the light-dark cycle to the other phase, and then back again. The degree to which activity changed to coincide with the most economical phase was analysed for each individual, and weasels were compared to mink. The activity of six (of seven) animals shifted in response to modified foraging costs, but only two animals (both mink) approached the 180^o redistribution of activity expected of an energy-maximizing forager. In general, all animals were active during a favoured phase (usually dark) of the light-dark cycle and relatively large variations in foraging cost during this cycle had only modest effects on activity. |
| abstractGer |
The daily activity of some predators is correlated with the activity pattern of their prey. If capture efficiency varies as a function of prey activity, a predator that synchronizes its foraging activity with the time of day that prey are most vulnerable should capture more prey, and at lower cost, than a predator that initiates foraging at random. Mink, Mustela vison, and weasels, M. erminea and M. nivalis, were presented with an opportunity to maximize their intake in similar circumstances in the laboratory. An animal's ability to synchronize its foraging activity with the time of day when food was most available was tested. Energy costs (wheel revolutions) were varied to encourage an animal to redistribute its activity from a preferred 12-h phase of the light-dark cycle to the other phase, and then back again. The degree to which activity changed to coincide with the most economical phase was analysed for each individual, and weasels were compared to mink. The activity of six (of seven) animals shifted in response to modified foraging costs, but only two animals (both mink) approached the 180^o redistribution of activity expected of an energy-maximizing forager. In general, all animals were active during a favoured phase (usually dark) of the light-dark cycle and relatively large variations in foraging cost during this cycle had only modest effects on activity. |
| abstract_unstemmed |
The daily activity of some predators is correlated with the activity pattern of their prey. If capture efficiency varies as a function of prey activity, a predator that synchronizes its foraging activity with the time of day that prey are most vulnerable should capture more prey, and at lower cost, than a predator that initiates foraging at random. Mink, Mustela vison, and weasels, M. erminea and M. nivalis, were presented with an opportunity to maximize their intake in similar circumstances in the laboratory. An animal's ability to synchronize its foraging activity with the time of day when food was most available was tested. Energy costs (wheel revolutions) were varied to encourage an animal to redistribute its activity from a preferred 12-h phase of the light-dark cycle to the other phase, and then back again. The degree to which activity changed to coincide with the most economical phase was analysed for each individual, and weasels were compared to mink. The activity of six (of seven) animals shifted in response to modified foraging costs, but only two animals (both mink) approached the 180^o redistribution of activity expected of an energy-maximizing forager. In general, all animals were active during a favoured phase (usually dark) of the light-dark cycle and relatively large variations in foraging cost during this cycle had only modest effects on activity. |
| collection_details |
GBV_USEFLAG_H ZDB-1-SDJ GBV_NL_ARTICLE |
| container_issue |
1 |
| title_short |
The influence of daily variation in foraging cost on the activity of small carnivores |
| url |
http://dx.doi.org/10.1016/S0003-3472(88)80267-7 |
| remote_bool |
true |
| author2 |
Zielinski, W.J. |
| author2Str |
Zielinski, W.J. |
| ppnlink |
NLEJ176893601 |
| mediatype_str_mv |
z |
| isOA_txt |
false |
| hochschulschrift_bool |
false |
| author2_role |
oth |
| up_date |
2024-07-06T03:45:52.618Z |
| _version_ |
1803799811973971968 |
| fullrecord_marcxml |
<?xml version="1.0" encoding="UTF-8"?><collection xmlns="http://www.loc.gov/MARC21/slim"><record><leader>01000caa a22002652 4500</leader><controlfield tag="001">NLEJ18536165X</controlfield><controlfield tag="003">DE-627</controlfield><controlfield tag="005">20210707014309.0</controlfield><controlfield tag="007">cr uuu---uuuuu</controlfield><controlfield tag="008">070506s1988 xx |||||o 00| ||eng c</controlfield><datafield tag="035" ind1=" " ind2=" "><subfield code="a">(DE-627)NLEJ18536165X</subfield></datafield><datafield tag="035" ind1=" " ind2=" "><subfield code="a">(DE-599)GBVNLZ18536165X</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="245" ind1="1" ind2="4"><subfield code="a">The influence of daily variation in foraging cost on the activity of small carnivores</subfield></datafield><datafield tag="264" ind1=" " ind2="1"><subfield code="c">1988</subfield></datafield><datafield tag="336" ind1=" " ind2=" "><subfield code="a">nicht spezifiziert</subfield><subfield code="b">zzz</subfield><subfield code="2">rdacontent</subfield></datafield><datafield tag="337" ind1=" " ind2=" "><subfield code="a">nicht spezifiziert</subfield><subfield code="b">z</subfield><subfield code="2">rdamedia</subfield></datafield><datafield tag="338" ind1=" " ind2=" "><subfield code="a">nicht spezifiziert</subfield><subfield code="b">zu</subfield><subfield code="2">rdacarrier</subfield></datafield><datafield tag="520" ind1=" " ind2=" "><subfield code="a">The daily activity of some predators is correlated with the activity pattern of their prey. If capture efficiency varies as a function of prey activity, a predator that synchronizes its foraging activity with the time of day that prey are most vulnerable should capture more prey, and at lower cost, than a predator that initiates foraging at random. Mink, Mustela vison, and weasels, M. erminea and M. nivalis, were presented with an opportunity to maximize their intake in similar circumstances in the laboratory. An animal's ability to synchronize its foraging activity with the time of day when food was most available was tested. Energy costs (wheel revolutions) were varied to encourage an animal to redistribute its activity from a preferred 12-h phase of the light-dark cycle to the other phase, and then back again. The degree to which activity changed to coincide with the most economical phase was analysed for each individual, and weasels were compared to mink. The activity of six (of seven) animals shifted in response to modified foraging costs, but only two animals (both mink) approached the 180^o redistribution of activity expected of an energy-maximizing forager. In general, all animals were active during a favoured phase (usually dark) of the light-dark cycle and relatively large variations in foraging cost during this cycle had only modest effects on activity.</subfield></datafield><datafield tag="533" ind1=" " ind2=" "><subfield code="f">Elsevier Journal Backfiles on ScienceDirect 1907 - 2002</subfield></datafield><datafield tag="700" ind1="1" ind2=" "><subfield code="a">Zielinski, W.J.</subfield><subfield code="4">oth</subfield></datafield><datafield tag="773" ind1="0" ind2="8"><subfield code="i">in</subfield><subfield code="t">Animal Behaviour</subfield><subfield code="d">Amsterdam : Elsevier</subfield><subfield code="g">36(1988), 1, Seite 239-249</subfield><subfield code="w">(DE-627)NLEJ176893601</subfield><subfield code="w">(DE-600)1461112-0</subfield><subfield code="x">0003-3472</subfield><subfield code="7">nnns</subfield></datafield><datafield tag="773" ind1="1" ind2="8"><subfield code="g">volume:36</subfield><subfield code="g">year:1988</subfield><subfield code="g">number:1</subfield><subfield code="g">pages:239-249</subfield></datafield><datafield tag="856" ind1="4" ind2="0"><subfield code="u">http://dx.doi.org/10.1016/S0003-3472(88)80267-7</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_USEFLAG_H</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">ZDB-1-SDJ</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_NL_ARTICLE</subfield></datafield><datafield tag="951" ind1=" " ind2=" "><subfield code="a">AR</subfield></datafield><datafield tag="952" ind1=" " ind2=" "><subfield code="d">36</subfield><subfield code="j">1988</subfield><subfield code="e">1</subfield><subfield code="h">239-249</subfield></datafield></record></collection>
|
| score |
7.396364 |