Abstract：
:Parasites play a crucial role in the ecology of animals. They also appear to be important in mechanisms underlying sexual selection processes. In this article we study the prevalence, effect and potential role in sexual selection of the protozoon Trypanosoma evansi in capybaras, Hydrochoerus hydrochaeris. We collected our samples from the annual capybara cull of a ranch in Venezuela, using the volume of the snout scent gland as an indicator of dominance; the residuals of body weight as indicators of condition; and the residuals of the spleen mass as indicators of immune function. Overall prevalence was 30.9% (N=97) with no difference between males and females and no relation between infection with T. evansi and condition. However, we found that infected animals had larger spleens (residuals), indicating an immunological cost of the infection. Further, males with larger snout scent glands (more dominant) were less likely to be infected than males with smaller glands (less dominant) suggesting that by choosing males with a large gland, females may be using the gland as an indicator of health, which is consistent with the “good genes” view of sexual selection.
journal_name
Rev Biol Tropjournal_title
Revista de biologia tropicalauthors
Herrera EA,Castro Ydoi
10.15517/rbt.v64i3.20110subject
Has Abstractpub_date
2017-03-01 00:00:00pages
229-37issue
1eissn
0034-7744issn
2215-2075journal_volume
65pub_type
杂志文章abstract：:The initial phase of a plant life cycle is a short and critical period, when individuals are more vulnerable to environmental factors. The morphological and anatomical study of seedlings and saplings leaf type enables the understanding of species strategies of fundamental importance in their establishment and survival...
journal_title：Revista de biologia tropical
pub_type： 杂志文章
doi：10.15517/rbt.v64i1.17923
更新日期：2016-03-01 00:00:00
abstract：:Capturing small carnivores is often necessary for obtaining key ecological data. We compared the efficiency of box and leg-hold traps, using live and dead bait, to capture six carnivore species (Herpailurus yagouaroundi (E. Geoffroyi, 1803), Leopardus tigrinus (Schreber, 1775), Nasua nasua (Linnaeus, 1766), Cerdocyon ...
journal_title：Revista de biologia tropical
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journal_title：Revista de biologia tropical
pub_type： 杂志文章
doi：
更新日期：1975-12-01 00:00:00
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journal_title：Revista de biologia tropical
pub_type： 杂志文章
doi：10.15517/rbt.v52i1.14762
更新日期：2004-03-01 00:00:00
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journal_title：Revista de biologia tropical
pub_type： 杂志文章
doi：
更新日期：2001-09-01 00:00:00
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journal_title：Revista de biologia tropical
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更新日期：2011-03-01 00:00:00
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journal_title：Revista de biologia tropical
pub_type： 杂志文章
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更新日期：2010-10-01 00:00:00
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journal_title：Revista de biologia tropical
pub_type： 杂志文章
doi：10.15517/rbt.v64i2.19632
更新日期：2016-06-01 00:00:00
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journal_title：Revista de biologia tropical
pub_type： 杂志文章
doi：
更新日期：2002-03-01 00:00:00
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journal_title：Revista de biologia tropical
pub_type： 杂志文章
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更新日期：2010-09-01 00:00:00
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journal_title：Revista de biologia tropical
pub_type： 杂志文章
doi：
更新日期：2000-12-01 00:00:00
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journal_title：Revista de biologia tropical
pub_type： 杂志文章
doi：10.15517/rbt.v52i1.14912
更新日期：2004-03-01 00:00:00
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journal_title：Revista de biologia tropical
pub_type： 杂志文章
doi：
更新日期：2004-12-01 00:00:00
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journal_title：Revista de biologia tropical
pub_type： 杂志文章
doi：
更新日期：2000-06-01 00:00:00
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journal_title：Revista de biologia tropical
pub_type： 杂志文章
doi：
更新日期：1997-03-01 00:00:00
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journal_title：Revista de biologia tropical
pub_type： 杂志文章
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更新日期：2011-09-01 00:00:00
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journal_title：Revista de biologia tropical
pub_type： 杂志文章
doi：
更新日期：1999-12-01 00:00:00
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journal_title：Revista de biologia tropical
pub_type： 杂志文章
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更新日期：2004-09-01 00:00:00
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journal_title：Revista de biologia tropical
pub_type： 杂志文章
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更新日期：2010-09-01 00:00:00
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journal_title：Revista de biologia tropical
pub_type： 杂志文章
doi：
更新日期：1978-12-01 00:00:00
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journal_title：Revista de biologia tropical
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更新日期：2000-12-01 00:00:00
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journal_title：Revista de biologia tropical
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更新日期：2011-03-01 00:00:00
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journal_title：Revista de biologia tropical
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更新日期：2007-03-01 00:00:00
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journal_title：Revista de biologia tropical
pub_type： 杂志文章,评审
doi：
更新日期：2004-09-01 00:00:00
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journal_title：Revista de biologia tropical
pub_type： 杂志文章
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更新日期：2002-03-01 00:00:00
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journal_title：Revista de biologia tropical
pub_type： 杂志文章
doi：
更新日期：2016-09-01 00:00:00
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journal_title：Revista de biologia tropical
pub_type： 杂志文章
doi：
更新日期：2010-10-01 00:00:00
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journal_title：Revista de biologia tropical
pub_type： 杂志文章
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更新日期：2013-12-01 00:00:00
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journal_title：Revista de biologia tropical
pub_type： 杂志文章
doi：
更新日期：2007-03-01 00:00:00
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journal_title：Revista de biologia tropical
pub_type： 杂志文章
doi：
更新日期：2005-09-01 00:00:00
