Resource partitioning in a snake assemblage from east-central Argentina

Two dimensions of the ecological niche (diet and habitat) of a snake assemblage from an endemic rich area in east-central Argentina, the Sierras de Ventania mountain chain, were analyzed. Field data collection was performed in 15-week study periods between 2010 and 2014. Snakes were hand-captured us...

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Autores principales: Di Pietro, Diego Omar, Williams, Jorge Daniel, Cabrera, Mario Roberto, Alcalde, Leandro, Cajade, Rodrigo, Kacoliris, Federico Pablo
Formato: Articulo
Lenguaje:Inglés
Publicado: 2020
Materias:
Ciencias Naturales
diet
foraging strategies
microhabitat use
niche overlap
snake assemblages
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/124877
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-124877
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Ciencias Naturales
diet
foraging strategies
microhabitat use
niche overlap
snake assemblages
spellingShingle Ciencias Naturales
diet
foraging strategies
microhabitat use
niche overlap
snake assemblages
Di Pietro, Diego Omar
Williams, Jorge Daniel
Cabrera, Mario Roberto
Alcalde, Leandro
Cajade, Rodrigo
Kacoliris, Federico Pablo
Resource partitioning in a snake assemblage from east-central Argentina
topic_facet Ciencias Naturales
diet
foraging strategies
microhabitat use
niche overlap
snake assemblages
description Two dimensions of the ecological niche (diet and habitat) of a snake assemblage from an endemic rich area in east-central Argentina, the Sierras de Ventania mountain chain, were analyzed. Field data collection was performed in 15-week study periods between 2010 and 2014. Snakes were hand-captured using transect surveys. Field observations on diet were analyzed together with stomach content data from museum specimens. Our results supported the partitioning of the snake assemblage by both habitat use and diet into at least three functional groups: species restricted to microhabitats under rocks and with a diet composed exclusively of ants (<i>Epictia australis</i>); species found mostly in stream microhabitats and feeding mainly upon anurans (<i>Erythrolamprus poecilogyrus</i> and <i>Lygophis elegantissimus</i>); and species found mostly in grassland microhabitats, with specialized diets of terrestrial prey items (<i>Philodryas patagoniensis</i> and <i>Bothrops alternatus</i>). Consistent with previous work, diet was more important than habitat in explaining ecological niche partitioning of this snake assemblage. Our results showed that high overlap values of microhabitat use were compensated by low overlap values of the trophic niche dimension, thus matching the traditional complementary niches hypothesis.
format Articulo
Articulo
author Di Pietro, Diego Omar
Williams, Jorge Daniel
Cabrera, Mario Roberto
Alcalde, Leandro
Cajade, Rodrigo
Kacoliris, Federico Pablo
author_facet Di Pietro, Diego Omar
Williams, Jorge Daniel
Cabrera, Mario Roberto
Alcalde, Leandro
Cajade, Rodrigo
Kacoliris, Federico Pablo
author_sort Di Pietro, Diego Omar
title Resource partitioning in a snake assemblage from east-central Argentina
title_short Resource partitioning in a snake assemblage from east-central Argentina
title_full Resource partitioning in a snake assemblage from east-central Argentina
title_fullStr Resource partitioning in a snake assemblage from east-central Argentina
title_full_unstemmed Resource partitioning in a snake assemblage from east-central Argentina
title_sort resource partitioning in a snake assemblage from east-central argentina
publishDate 2020
url http://sedici.unlp.edu.ar/handle/10915/124877
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bdutipo_str Repositorios
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