Journal Title
Title of Journal: Mar Biol
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Abbravation: Marine Biology
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Publisher
Springer Berlin Heidelberg
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Authors: Gretchen A Gerrish James G Morin
Publish Date: 2016/08/20
Volume: 163, Issue: 9, Pages: 190-
Abstract
Distinguishing among courtship signals can be extremely important for individuals in regions where related species cooccur including among sympatric species pairs and along hybrid zones Reef habitats off the coast of Belize are shared by bioluminescent ostracods that perform nightly bioluminescent displays used in courtship These displays vary in light pulse durations interpulse distances and intervals and direction Here we test how six sympatric species of marine ostracods three described and three undescribed species partition the display arena in time and space Males from all six species can be differentiated based on morphology and speciesspecific luminescent display traits Timing of nightly courtship display initiation and peak display timing differed among species by 5–25 min and the order of appearance for each species was consistent across nights In addition to varying temporally species used different microhabitats grassbed sand channels reef slopes and reef crest for their courtship displays Our findings support the hypothesis that species with more similar display traits pulse duration interpulse distance number of pulses differ most in the time and space used for courtship The large number of axes for displacement of both luminescent display traits and spatiotemporal habitat use for courtship suggests that ostracods have the genetic toolkit for rapid diversification This species complex living in sympatry yields a rich system for testing how genetic determination of behavioral traits relates to sexual selection and speciationThank you to editor Martin Thiel three reviewers for feedback and edits on our original submission We would like to thank Colleen Kearns and Hilary Kates for assistance with data collection We thank Nelson Hairston Jr and Amy McCune for feedback on experimental design and early drafts of the manuscript Mark Riccio of the Cornell University Institute of Biotechnology Imaging Facility assisted in the microCT scanning of the specimens We give a special thanks in memorium to Victor Orlando Escobar 1974–2014 our beloved Belizean field guide who assisted with this research Funding was provided by the Mario Einaudi International Fund at Cornell University the Lerner Grey Fund for Marine Science and the Andrew W Mellon Foundation All work was completed in accordance with permits obtained from the Belize Department of FisheriesNo vertebrate animals or human participants were used in this study All applicable international national and/or institutional guidelines for the care and use of animals were followed All work was done in compliance with permits from the Department of Fisheries Belize
Keywords:
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