Allometric growth and sperm competition in fishes
Source: Journal of Fish Biology, Volume 67, Number 2, August 2005 , pp. 470-480(11)
Abstract:The allometric relationship between body mass and gonad mass in males of 23 fish species from 11 families was examined. There was no evidence of a single allometry for all fishes. A cross species analysis suggested a scaling coefficient of 1·04, which was significantly different from a previous study that reported a scaling coefficient of 0·904. A within species analysis generated scaling coefficients from 0·68 to 3·90. Furthermore, for those species characterized by alternative mating tactics, there was no correlation between the scaling coefficients of bourgeois-type males and parasitic-type males. These results are discussed in the context of the gonado-somatic index and its use in testing sperm competition theory.
Document Type: Regular paper
Affiliations: 1: Department of Biology, University of Western Ontario, London, Ontario N6A 5B7, Canada and 2: Center for Limnology, University of Wisconsin, 680 N. Park Street, Madison, Wisconsin, 53706, U.S.A.
Publication date: 2005-08-01