Relating the ontogeny of functional morphology and prey selection with larval mortality in Amphiprion frenatus

Journal of Morphology
J Anto, R G Turingan

Abstract

Survival during the pelagic larval phase of marine fish is highly variable and is subject to numerous factors. A sharp decline in the number of surviving larvae usually occurs during the transition from endogenous to exogenous feeding known as the first feeding stage in fish larvae. The present study was designed to evaluate the link between functional morphology and prey selection in an attempt to understand how the relationship influences mortality of a marine fish larva, Amphiprion frenatus, through ontogeny. Larvae were reared from hatch to 14 days post hatch (DPH) with one of four diets [rotifers and newly hatched Artemia sp. nauplii (RA); rotifers and wild plankton (RP); rotifers, wild plankton, and newly hatched Artemia nauplii (RPA); wild plankton and newly hatched Artemia nauplii (PA)]. Survival did not differ among diets. Larvae from all diets experienced mass mortality from 1 to 5 DPH followed by decreased mortality from 6 to 14 DPH; individuals fed RA were the exception, exhibiting continuous mortality from 6 to 14 DPH. Larvae consumed progressively larger prey with growth and age, likely due to age related increase in gape. During the mass mortality event, larvae selected small prey items and exhibited few ossified...Continue Reading

References

Feb 13, 2002·Proceedings. Biological Sciences·C Darrin Hulsey, Peter C Wainwright
Dec 14, 2002·The Biological Bulletin·Jonathan H Cohen, Richard B Forward
Apr 1, 2002·Integrative and Comparative Biology·L Patricia HernándezStephen H Devoto
Jan 1, 1996·Journal of Morphology·Ione Hunt Von HerbingRobert G Boutilier

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