Life History Characteristics of a Small Cardinalfish, Ostorhinchus rubrimacula (Percoidei: Apogonidae), from Koro, Fiji.

Date
2006-04
Authors
Longenecker, Ken
Langston, Ross.
Journal Title
Journal ISSN
Volume Title
Publisher
Honolulu, University of Hawaii Press
Abstract
We describe aspects of the life history of the small cardinalfish Ostorhinchus rubrimacula from a single, large collection taken at Koro, Fiji. We determined size at maturity and batch fecundity, examined otolith microstructure to construct a vonBertalanffy growth curve, described a length weight relationship, and performed a dietary analysis. Ostorhinchus rubrimacula is a gonochore that matures at 35 mm standard length (SL). Batch fecundity is related to body size by the equation: eggs spawned ¼ 0.0013(SL) 3:8685. Assuming each otolith ring corresponds to 1 day in age, the oldest individual in our collection lived 274 days. Growth is described by the equation: SL ¼ 40.84[l _ e_0:014ðage in days_22:45Þ]. Total body mass (mg) ¼ 4.806 _ 10_6(SL)3:5163. Ostorhinchus rubrimacula feeds primarily on harpacticoid copepods, but isopods (mostly gnathidean) and polychaetes were also important dietary components.
Description
v. ill. 23 cm.
Quarterly
Keywords
Citation
Longenecker, K, Langston, R. Life History Characteristics of a Small Cardinalfish, Ostorhinchus rubrimacula (Percoidei: Apogonidae), from Koro, Fiji. Pac Sci 60(2): 225-234.
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