Macroevolution of thermal tolerance in intertidal crabs from Neotropical provinces: A phylogenetic comparative evaluation of critical limits

Authors
Faria, Samuel C.; Faleiros, Rogério O.; Brayner, Fábio A.; Alves, Luiz C.; Bianchini, Adalto; Romero, Maria Carolina; Buranelli, Raquel C.; Mantelatto, Fernando L.; McNamara, John C.
Publication Year
2017
Language
English
Format
article
Status
Published version
Description
Thermal tolerance underpins most biogeographical patterns in ectothermic animals. Macroevolutionary patterns of thermal limits have been historically evaluated, but a role for the phylogenetic component in physiological variation has been neglected. Three marine zoogeographical provinces are recognized throughout the Neotropical region based on mean seawater temperature (Tm): the Brazilian (Tm = 26 °C), Argentinian (Tm = 15 °C), and Magellanic (Tm = 9 °C) provinces. Microhabitat temperature (MHT) was measured, and the upper (UL50) and lower (LL50) critical thermal limits were established for 12 eubrachyuran crab species from intertidal zones within these three provinces. A molecular phylogenetic analysis was performed by maximum likelihood using the 16S mitochondrial gene, also considering other representative species to enable comparative evaluations. We tested for: (1) phylogenetic pattern of MHT, UL50, and LL50; (2) effect of zoogeographical province on the evolution of both limits; and (3) evolutionary correlation between MHT and thermal limits. MHT and UL50 showed strong phylogenetic signal at the species level while LL50 was unrelated to phylogeny, suggesting a more plastic evolution. Province seems to have affected the evolution of thermal tolerance, and only UL50 was dependent on MHT. UL50 was similar between the two northern provinces compared to the southernmost while LL50 differed markedly among provinces. Apparently, critical limits are subject to different environmental pressures and thus manifest unique evolutionary histories. An asymmetrical macroevolutionary scenario for eubrachyuran thermal tolerance seems likely, as the critical thermal limits are differentially inherited and environmentally driven.
Fil: Faria, Samuel C.. Universidade Federal do Rio Grande do Norte; Brasil. Universidade de Sao Paulo; Brasil
Fil: Faleiros, Rogério O.. Universidade de Sao Paulo; Brasil
Fil: Brayner, Fábio A.. Fundación Oswaldo Cruz; Brasil. Universidade Federal de Pernambuco; Brasil
Fil: Alves, Luiz C.. Universidade Federal de Pernambuco; Brasil. Fundación Oswaldo Cruz; Brasil
Fil: Bianchini, Adalto. Universidade Federal do Rio Grande do Norte; Brasil
Fil: Romero, Maria Carolina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas; Argentina
Fil: Buranelli, Raquel C.. Universidade de Sao Paulo; Brasil
Fil: Mantelatto, Fernando L.. Universidade de Sao Paulo; Brasil
Fil: McNamara, John C.. Universidade de Sao Paulo; Brasil
Subject
16SMT GENE
COMPARATIVE METHODS
CRUSTACEA
DECAPODA
EVOLUTIONARY PHYSIOLOGY
TEMPERATURE
THERMAL LIMITS
ZOOGEOGRAPHICAL PROVINCE
Otras Ciencias Biológicas
Ciencias Biológicas
CIENCIAS NATURALES Y EXACTAS
Access level
Open access
License
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repository
CONICET Digital (CONICET)
Institution
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identifier
oai:ri.conicet.gov.ar:11336/64050