Mate change reduces the reproductive rate of males in a monogamous pipefish corythoichthys haematopterus: The benefit of long-term pair bonding

Atsushi Sogabe, Koji Matsumoto, Yasunobu Yanagisawa

Research output: Contribution to journalArticle

17 Citations (Scopus)

Abstract

Monogamy has evolved independently in many taxa, and often involves biparental care of the young and/or low defendability of multiple mates. In many teleost fishes, however, strict monogamy is practised without such limitations. In this study, we examined why males of the pipefish Corythoichthys haematopterus (family: Syngnathidae) reproduce monogamously without changing to another mate. For this we examined the time cost associated with mate change by experimentally removing females from mating pairs and compelling the males to change mates. Mate-changing males needed longer interspawning intervals, an average of 8.5 d, than their monogamous counterparts, which was primarily because of the time needed for the new female to prepare mature eggs. As a result, we assume that mate change entails considerable reproductive costs associated with a decrease in reproductive rate. Monogamy and long-term pair bonding in C. haematopterus are likely maintained because of high reproductive rates by repeatedly reproducing with the same mate over a lifetime.

Original languageEnglish
Pages (from-to)764-771
Number of pages8
JournalEthology
Volume113
Issue number8
DOIs
Publication statusPublished - 2007 Aug 1

ASJC Scopus subject areas

  • Ecology, Evolution, Behavior and Systematics
  • Animal Science and Zoology

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