Fertilization in Marine Fishes

Christopher W. Petersen and Carlotta Mazzoldi

in Reproduction and Sexuality in Marine Fishes

Published by University of California Press

Published in print October 2010 | ISBN: 9780520264335
Published online March 2012 | e-ISBN: 9780520947979 | DOI:
Fertilization in Marine Fishes

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This chapter explores how developmental processes may have become modified to generate variable sexual expression in marine fishes. First, it discusses events associated with reproductive morphogenesis in teleosts to determine whether diverse patterns of reproductive morphology among hermaphroditic gobiid fishes can be explained in terms of ontogenetic modifications. The chapter then examines fertilization mode and fertilization success from the perspective of behavioral and evolutionary ecology. After providing an overview of the dynamics of fertilization in fishes, it looks at how fertilization success has been measured in the field. The chapter then summarizes data on marine fishes with external fertilization (pelagic and demersal egg species) and internal fertilization. It also considers the evolution of male ejaculates and how different ecological circumstances may select for different reproductive allocation strategies. Finally, the chapter asks how this information interacts with and informs applied areas such as conservation biology, exploited species such as Atlantic cod, and large sex-changing tropical species such as groupers.

Keywords: Atlantic cod; gobiid fishes; fertilization; marine fishes; conservation biology; sexual expression; teleosts; male ejaculates; reproductive allocation; reproductive morphology

Chapter.  16759 words.  Illustrated.

Subjects: Aquatic Biology

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