Can color vision variation explain sex differences in invertebrate foraging by capuchin monkeys?
Invertebrates are the main source of protein for many small-bodied monkeys. Prey vary in size, mobility, degree of protective covering, and use of the forest, i.e. canopy height, and whether they are exposed or embed themselves in substrates. Sex-differentiation in foraging patterns is well document...
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| Format: | Article |
| Language: | English |
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Oxford University Press
2010-06-01
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| Series: | Current Zoology |
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| Online Access: | http://www.currentzoology.org/paperdetail.asp?id=11491 |
| _version_ | 1818662996802535424 |
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| author | Amanda D. MELIN, Linda M. FEDIGAN, Hilary C. YOUNG, Shoji KAWAMURA |
| author_facet | Amanda D. MELIN, Linda M. FEDIGAN, Hilary C. YOUNG, Shoji KAWAMURA |
| author_sort | Amanda D. MELIN, Linda M. FEDIGAN, Hilary C. YOUNG, Shoji KAWAMURA |
| collection | DOAJ |
| description | Invertebrates are the main source of protein for many small-bodied monkeys. Prey vary in size, mobility, degree of protective covering, and use of the forest, i.e. canopy height, and whether they are exposed or embed themselves in substrates. Sex-differentiation in foraging patterns is well documented for some monkey species and recent studies find that color vision phenotype can also affect invertebrate foraging. Since vision phenotype is polymorphic and sex-linked in most New World monkeys - males have dichromatic vision and females have either dichromatic or trichromatic vision - this raises the possibility that sex differences are linked to visual ecology. We tested predicted sex differences for invertebrate foraging in white-faced capuchins Cebus capucinus and conducted 12 months of study on four free-ranging groups between January 2007 and September 2008. We found both sex and color vision effects. Sex: Males spent more time foraging for invertebrates on the ground. Females spent more time consuming embedded, colonial invertebrates, ate relatively more “soft” sedentary invertebrates, and devoted more of their activity budget to invertebrate foraging. Color Vision: Dichromatic monkeys had a higher capture efficiency of exposed invertebrates and spent less time visually foraging. Trichromats ate relatively more “hard” sedentary invertebrates. We conclude that some variation in invertebrate foraging reflects differences between the sexes that may be due to disparities in size, strength, reproductive demands or niche preferences. However, other intraspecific variation in invertebrate foraging that might be mistakenly attributed to sex differences actually reflects differences in color vision [Current Zoology 56 (3): 300–312, 2010]. |
| first_indexed | 2024-12-17T05:09:50Z |
| format | Article |
| id | doaj.art-d2825b9697144708be80068c580bc5d0 |
| institution | Directory Open Access Journal |
| issn | 1674-5507 |
| language | English |
| last_indexed | 2024-12-17T05:09:50Z |
| publishDate | 2010-06-01 |
| publisher | Oxford University Press |
| record_format | Article |
| series | Current Zoology |
| spelling | doaj.art-d2825b9697144708be80068c580bc5d02022-12-21T22:02:18ZengOxford University PressCurrent Zoology1674-55072010-06-01563300312Can color vision variation explain sex differences in invertebrate foraging by capuchin monkeys?Amanda D. MELIN, Linda M. FEDIGAN, Hilary C. YOUNG, Shoji KAWAMURAInvertebrates are the main source of protein for many small-bodied monkeys. Prey vary in size, mobility, degree of protective covering, and use of the forest, i.e. canopy height, and whether they are exposed or embed themselves in substrates. Sex-differentiation in foraging patterns is well documented for some monkey species and recent studies find that color vision phenotype can also affect invertebrate foraging. Since vision phenotype is polymorphic and sex-linked in most New World monkeys - males have dichromatic vision and females have either dichromatic or trichromatic vision - this raises the possibility that sex differences are linked to visual ecology. We tested predicted sex differences for invertebrate foraging in white-faced capuchins Cebus capucinus and conducted 12 months of study on four free-ranging groups between January 2007 and September 2008. We found both sex and color vision effects. Sex: Males spent more time foraging for invertebrates on the ground. Females spent more time consuming embedded, colonial invertebrates, ate relatively more “soft” sedentary invertebrates, and devoted more of their activity budget to invertebrate foraging. Color Vision: Dichromatic monkeys had a higher capture efficiency of exposed invertebrates and spent less time visually foraging. Trichromats ate relatively more “hard” sedentary invertebrates. We conclude that some variation in invertebrate foraging reflects differences between the sexes that may be due to disparities in size, strength, reproductive demands or niche preferences. However, other intraspecific variation in invertebrate foraging that might be mistakenly attributed to sex differences actually reflects differences in color vision [Current Zoology 56 (3): 300–312, 2010].http://www.currentzoology.org/paperdetail.asp?id=11491Male ForagingFemale ForagingCebusDichromacyTrichromacyInvertebrate Foraging |
| spellingShingle | Amanda D. MELIN, Linda M. FEDIGAN, Hilary C. YOUNG, Shoji KAWAMURA Can color vision variation explain sex differences in invertebrate foraging by capuchin monkeys? Current Zoology Male Foraging Female Foraging Cebus Dichromacy Trichromacy Invertebrate Foraging |
| title | Can color vision variation explain sex differences in invertebrate foraging by capuchin monkeys? |
| title_full | Can color vision variation explain sex differences in invertebrate foraging by capuchin monkeys? |
| title_fullStr | Can color vision variation explain sex differences in invertebrate foraging by capuchin monkeys? |
| title_full_unstemmed | Can color vision variation explain sex differences in invertebrate foraging by capuchin monkeys? |
| title_short | Can color vision variation explain sex differences in invertebrate foraging by capuchin monkeys? |
| title_sort | can color vision variation explain sex differences in invertebrate foraging by capuchin monkeys |
| topic | Male Foraging Female Foraging Cebus Dichromacy Trichromacy Invertebrate Foraging |
| url | http://www.currentzoology.org/paperdetail.asp?id=11491 |
| work_keys_str_mv | AT amandadmelinlindamfediganhilarycyoungshojikawamura cancolorvisionvariationexplainsexdifferencesininvertebrateforagingbycapuchinmonkeys |