Environmental Biology of Fishes

, Volume 91, Issue 3, pp 295–301 | Cite as

Life span, growth and mortality in the western Pacific goby Trimma benjamini, and comparisons with T. nasa

  • Richard Winterbottom
  • Karen M. Alofs
  • Alexandra Marseu
Article

Abstract

Examination of daily increment rings in the saccular otoliths of 91 specimens of the small goby, Trimma benjamini, reveal a maximum age of 140 days with an average pelagic larval duration of 33.9 ± 4.3 days (SD), or 24.2% of the maximum lifespan. Estimates of daily mortality rate ranged from 2.9% to 6.3%. Comparisons of these results with those for T. nasa suggest that 1) the growth rate of T. benjamini males does not decrease with age as it does for T. nasa; 2) T. benjamini has a longer lifespan and lower daily mortality rate than T. nasa; and 3) T. nasa has a faster growth rate than T. benjamini. These results reinforce the potentially important role of small, planktivorous, outer reef fishes in reef trophodynamics, as well as highlight the need for further research on small reef fishes.

Keywords

Life history Gobiidae Trimma benjamini Otoliths Pelagic larval duration Age Growth Mortality Cryptobenthic fishes 

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Copyright information

© Springer Science+Business Media B.V. 2011

Authors and Affiliations

  • Richard Winterbottom
    • 1
  • Karen M. Alofs
    • 2
  • Alexandra Marseu
    • 2
  1. 1.Department of Natural HistoryRoyal Ontario MuseumTorontoCanada
  2. 2.Department of Ecology and Evolutionary BiologyUniversity of TorontoTorontoCanada

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