Temperature influences selective mortality during the early life stages of a coral reef fish.

PloS One
Tauna L Rankin, Su Sponaugle

Abstract

For organisms with complex life cycles, processes occurring at the interface between life stages can disproportionately impact survival and population dynamics. Temperature is an important factor influencing growth in poikilotherms, and growth-related processes are frequently correlated with survival. We examined the influence of water temperature on growth-related early life history traits (ELHTs) and differential mortality during the transition from larval to early juvenile stage in sixteen monthly cohorts of bicolor damselfish Stegastes partitus, sampled on reefs of the upper Florida Keys, USA over 6 years. Otolith analysis of settlers and juveniles coupled with environmental data revealed that mean near-reef water temperature explained a significant proportion of variation in pelagic larval duration (PLD), early larval growth, size-at-settlement, and growth during early juvenile life. Among all cohorts, surviving juveniles were consistently larger at settlement, but grew more slowly during the first 6 d post-settlement. For the other ELHTs, selective mortality varied seasonally: during winter and spring months, survivors exhibited faster larval growth and shorter PLDs, whereas during warmer summer months, selection on PLD r...Continue Reading

References

May 3, 2002·Nature·James F GilloolyJames H Brown
Nov 13, 2004·Proceedings. Biological Sciences·Peter A BiroEric A Parkinson
May 25, 2006·Proceedings. Biological Sciences·Jörgen I Johnsson, Torgny Bohlin
Jan 10, 2008·Proceedings. Biological Sciences·Marjan De Block, Robby Stoks
Feb 13, 2010·Journal of Evolutionary Biology·D W Johnson, M A Hixon
Oct 28, 2010·Proceedings of the National Academy of Sciences of the United States of America·Steven D GainesRichard Pollnac
Oct 1, 2006·Integrative and Comparative Biology·Su Sponaugle, Kirsten Grorud-Colvert
May 1, 2002·Oecologia·Mikaela A BergeniusMark I McCormick

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Citations

May 23, 2013·Ecology·Njal Rollinson, Jeffrey A Hutchings
Nov 12, 2015·Global Change Biology·Matthew S KendallKristopher B Karnauskas
Sep 30, 2016·Scientific Reports·Esther D GoldsteinSu Sponaugle
Nov 17, 2020·Molecular Ecology·Katrina A CatalanoMalin L Pinsky

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Methods Mentioned

BETA
dissect

Software Mentioned

SYSTAT
CANOCO

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