Climatic niche breadths of the Atlantic Forest snakes do not increase with increasing latitude

José Thales da Motta Portillo ¹Fausto Erritto Barbo ²Ricardo J.Sawaya³

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作者信息

1. Programa de Pós-Graduação em Biologia Animal,Instituto de Biociências,Letras e Ciências Exatas,Universidade Estadual Paulista"Júlio de Mesquita Filho",Rua Cristóvão Colombo,2265,São Josédo Rio Preto,São Paulo 15054-000,Brazil
2. Laboratório de Coleções Zoológicas,Instituto Butantan,Avenida Vital Brazil,1500,São Paulo 05503-900,Brazil
3. Centro de Ciências Naturais e Humanas,Universidade Federal do ABC,Rua Arcturus,03,São Bernardo do Campo,São Paulo 09606-070,Brazil
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Abstract

The climatic niche is a central concept for understanding species distribution, with current and past climate interpreted as strong drivers of present and historical-geographical ranges. Our aim is to understand whether Atlantic Forest snakes follow the general geographical pattern of increasing species climatic niche breadths with increasing latitude. We also tested if there is a tradeoff between temperature and precipitation niche breadths of species in order to understand if species with larger breadths of one niche dimension have stronger dispersal constraints by the other due to narrower niche breadths. Niche breadths were calculated by the subtraction of maximal and minimal values of tempera-ture and precipitation across species ranges. We implemented Phylogenetic Generalized Least Squares to measure the relationship between temperature and precipitation niche breadths and latitude. We also tested phylogenetic signals by Lambda statistics to analyze the degree of phylogenetic niche conservatism to both niche dimensions. Temperature niche breadths were not related to latitude. Precipitation niche breadths decreased with increasing latitude and presented a high phylogenetic signal, that is, significant phylogenetic niche conservatism. We rejected the tradeoff hypotheses of temperature and precipitation niche breadths. Our results also indicate that precipitation should be an important ecological constraint affecting the geographical distribution of snake lineages across the South American Atlantic Forest. We then provide a general view of how phylogenetic niche conservatism could impact the patterns of latitudinal variation of climatic niches across this biodiversity hotspot.

Key words

Atlantic Forest/biogeography/climatic niche/latitudinal gradient/snakes

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基金项目

Funda??o de Amparo à Pesquisa do Estado de S?o Paulo(FAPESP procs.2008/50068-2)

Funda??o de Amparo à Pesquisa do Estado de S?o Paulo(2014/23677-9)

Funda??o de Amparo à Pesquisa do Estado de S?o Paulo(2020/12658-4)

Conselho Nacional de Desenvolvimento Científico e Tecnológico(CNPq)

Conselho Nacional de Desenvolvimento Científico e Tecnológico(405447/2016-7)

巴西国家科学技术发展委员会项目(312795/2018-1)

出版年

2022

动物学报(英文版)

中国科学院动物研究所,中国动物学会

动物学报(英文版)

CSCDSCI

影响因子：0.198

ISSN：1674-5507

参考文献量51

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