Asynchrony and regional differences in the reproductive cycle of the greenback stingaree Urolophus viridis from south-eastern Australia
Fabian I Trinnie, Terence I Walker, Paul L Jones, Laurie J Laurenson
ENVIRONMENTAL BIOLOGY OF FISHES | SPRINGER | Published : 2015
Determining the periodicity of the reproductive cycle in chondrichthyan species when the population is recruiting asynchronously, as found for Urolopus viridis, can be problematic. The reproductive cycle generally requires distinguishable trends in reproductive indices across the population. The present study utilised other similar and sympatric urolophid species with synchronous reproductive cycles. Through data collected in the present study and comparisons of maximum total length (TL), periodicity of egg and embryo in utero, ovarian cycles, largest ovarian follicle diameter, and matrotrophic contribution (percentage increase from egg to embryo after maternal histotroph supplement) from si..View full abstract
Awarded by Australian Fisheries Research and Development Corporation (FRDC)
Professional fishermen and technical staff, students and volunteers at the Department of Primary Industries (DPI) Queenscliff Centre and the Victorian Marine Science Consortium are acknowledged for collection of specimens and Anne Gason of DPI provided advice on statistical analyses and management of data. This study was carried out under the protocol approved by the Animal Ethic Committee, Fisheries Victoria. This project was funded by the Australian Fisheries Research and Development Corporation grant (FRDC Project 2002/003) and a Deakin University PhD scholarship.