Chapter

Reproduction in Scorpaeniformes

Marta Muñoz

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: http://dx.doi.org/10.1525/california/9780520264335.003.0003
Reproduction in Scorpaeniformes

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This chapter offers a phylogenetic treatment for reproductive traits among the Scorpaeniformes. This taxon is one of the most morphologically diverse of all teleostean orders and, perhaps not surprisingly, is also one of the most reproductively diverse. Scorpaenids as a group exhibit both internal and external fertilization modes. Among internal fertilizers, offspring may be released from the maternal body at varying stages of development. Among externally spawning species in which ova are released directly into the environment prior to fertilization, the resulting embryos may be anchored, drift free, or raft with other embryos. The ancestral stock of scorpaeniforms was probably unspecialized. It is reasonable to assume that their reproduction involved a simple form of oviparity, such as broadcast spawning of pelagic, or oviposition of demersal, eggs. This ancestral stock diverged into two groups: the lineages Cottoidei and Scorpaenoidei. This is in concordance with the reproductive dichotomy found between demersal spawning cottoids and pelagic spawning scorpaenoids. The chapter discusses the diversity and evolutionary trends of reproduction in scorpaeniform fishes.

Keywords: Scorpaeniformes; reproduction; reproductive traits; fertilization; scorpaenids; oviparity; Cottoidei; Scorpaenoidei; spawning

Chapter.  10143 words.  Illustrated.

Subjects: Aquatic Biology

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