Phenotypic plasticity and the colonization of new habitats : A study of a colonial spider in the Chaco region and the Cerrado

In social animals, group prey capture could facilitate colonization of new areas with low resource availability. Parawixia bistriata is a colonial spider inhabiting seasonal dry forests and mesic habitats in South America. Individuals capture prey as a group, which allows individuals to broaden thei...

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Detalles Bibliográficos
Autores principales: Fernández Campón, F., Nisaka Solferini, V., Carrara, Rodolfo, Marvaldi, Adriana Elena, Confalonieri, Viviana A.
Formato: Articulo
Lenguaje:Inglés
Publicado: 2021
Materias:
Ciencias Naturales
Ecología
Parawixia bistriata
Phylogeography
Species distribution model
Chaco region
Cerrado
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/131345
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-131345
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
Ecología
Parawixia bistriata
Phylogeography
Species distribution model
Chaco region
Cerrado
spellingShingle Ciencias Naturales
Ecología
Parawixia bistriata
Phylogeography
Species distribution model
Chaco region
Cerrado
Fernández Campón, F.
Nisaka Solferini, V.
Carrara, Rodolfo
Marvaldi, Adriana Elena
Confalonieri, Viviana A.
Phenotypic plasticity and the colonization of new habitats : A study of a colonial spider in the Chaco region and the Cerrado
topic_facet Ciencias Naturales
Ecología
Parawixia bistriata
Phylogeography
Species distribution model
Chaco region
Cerrado
description In social animals, group prey capture could facilitate colonization of new areas with low resource availability. Parawixia bistriata is a colonial spider inhabiting seasonal dry forests and mesic habitats in South America. Individuals capture prey as a group, which allows individuals to broaden their foraging niche by incorporating large prey that cannot be subdued in solitary captures. P. bistriata exhibits two behavioural ecotypes a “dry” (plastic) ecotype which modifies individual’s tendency to capture prey in a group depending on food resources and a “wet” (fixed) ecotype, whose tendency to group prey capture is only modulated by the size of the prey but not by prey availability. By reconstructing the range expansion of the species using phylogeographic and species distribution modelling techniques, we indirectly examined whether group prey capture could have helped P. bistriata in colonization of low resource habitats. Based on cytochrome c oxidase subunit I gene genealogy, we found older populations in northern Cerrado in Brazil with more recent populations located further south in Dry and Humid Chaco in Argentina, with the latter being the most derived. Species distribution modelling for each ecotype suggests that suitable habitat for each ecotype started to overlap at some point during the Last Glacial Maximum (21 ky BP). These results suggest that P. bistriata expanded from northern Cerrado south to the Gran Chaco, being able to colonize mesic habitats at a later stage when individuals reached southern territories in the Chaco. This evidence is opposite to the idea that GPC facilitated P. bistriata colonization from mesic to harsher environments. However, plasticity in group prey capture could have been important to allow individuals to establish in mesic habitats by reducing the cost of group capture when under high resource levels.
format Articulo
Articulo
author Fernández Campón, F.
Nisaka Solferini, V.
Carrara, Rodolfo
Marvaldi, Adriana Elena
Confalonieri, Viviana A.
author_facet Fernández Campón, F.
Nisaka Solferini, V.
Carrara, Rodolfo
Marvaldi, Adriana Elena
Confalonieri, Viviana A.
author_sort Fernández Campón, F.
title Phenotypic plasticity and the colonization of new habitats : A study of a colonial spider in the Chaco region and the Cerrado
title_short Phenotypic plasticity and the colonization of new habitats : A study of a colonial spider in the Chaco region and the Cerrado
title_full Phenotypic plasticity and the colonization of new habitats : A study of a colonial spider in the Chaco region and the Cerrado
title_fullStr Phenotypic plasticity and the colonization of new habitats : A study of a colonial spider in the Chaco region and the Cerrado
title_full_unstemmed Phenotypic plasticity and the colonization of new habitats : A study of a colonial spider in the Chaco region and the Cerrado
title_sort phenotypic plasticity and the colonization of new habitats : a study of a colonial spider in the chaco region and the cerrado
publishDate 2021
url http://sedici.unlp.edu.ar/handle/10915/131345
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