e-journal

How Temperature-Induced Variation in Musculoskeletal Anatomy Affects Escape Performance and Survival of Zebrafish (Danio rerio)

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Fishes are particularly sensitive to the effects of environmental conditions during early development,
which can significantly impact adult morphology, performance, and survival. Previous research has
highlighted the sensitivity of fishes to the effects of temperature during early development on
vertebral number and muscle composition, which are both important determinants of an individual's
swimming performance. In this study, we investigated the effect of developmental temperature on
vertebral and muscle variation, and the subsequent effect of any variation on burst swimming
performance in zebrafish (Danio rerio). Following development at a range of temperatures, all
individuals were shifted to and maintained at a common temperature before startle responses were
recorded and individuals were analyzed for either vertebral number ormuscle composition. Our results
indicate that developmental temperature does not significantly affect muscle composition, but can
affect an individual's vertebral number, and that individuals with more vertebrae achieved greater
displacement and velocities during C-start performance. To determine the ecological importance of
this vertebral variation and to identify the potential selective factors behind it, we exposed populations
of zebrafish with various vertebral numbers to native predators, needlenose garfish (Xenentodon
cancila). We found that only caudal vertebral number was related to survival, and that survivors had
the same caudal vertebral number across developmental temperatures. Overall, this work highlights
the importance of including variation in musculoskeletal anatomy when investigating what is driving
selection in fishes.

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Informasi Detail

Judul Seri

Journal Experimental Zoology

No. Panggil

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Penerbit

New York : Wiley Periodicals, Inc.., 2016

Deskripsi Fisik

J. Exp. Zool. 325A:25–40, 2016

Bahasa

English

ISBN/ISSN

DOI: 10.1002/jez.199

Klasifikasi

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Tipe Isi

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Tipe Media

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Tipe Pembawa

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Edisi

325A:2016

Subjek

ZOOLOGY

Info Detail Spesifik

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Pernyataan Tanggungjawab

agus

Versi lain/terkait

Lampiran Berkas

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