Evidence of density-independent mortality in a settling coral reef damselfish, Chromis viridis |
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| Authors: | David Lecchini Yohei Nakamura Julien Grignon Makoto Tsuchiya |
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| Institution: | (1) CRIOBE, Centre de Recherches Insulaires et Observatoire de l'Environnement, Moorea, BP 1013, French Polynesia;(2) Laboratory of Ecology and Systematics, University of the Ryukyus, 1 Senbaru, Nishihara, Okinawa 903-0213, Japan;(3) Department of Global Agricultural Sciences, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Yayoi, Bunkyo-ku, Tokyo 113-8657, Japan |
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| Abstract: | To know if the variation in the number of settling fish larvae can be dampened by density-dependent postsettlement mortality,
we investigated the relationship between settler density and predator-induced mortality of a coral reef damselfish, Chromis viridis. Totals of 2, 3, 5, 8, 10, 12, 14, 16, 18, and 20 fish of 10 or 20 mm total length were released in experimental cages enclosing
a coral head of Porites rus (to provide settlement habitat) and five predators. The results showed that the mortality rate of both 10- and 20-mm fish
was density independent. |
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| Keywords: | Coral reef fish Settlement Predation Density independence |
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