caa a22 4500 606226613 CHVBK 20210128101154.0 cr unu---uuuuu 210128e20150101xx s 000 0 eng 10.1007/s10641-014-0273-4 doi (NATIONALLICENCE)springer-10.1007/s10641-014-0273-4 Asynchrony and regional differences in the reproductive cycle of the greenback stingaree Urolophus viridis from south-eastern Australia [Elektronische Daten] [Fabian Trinnie, Terence Walker, Paul Jones, Laurie Laurenson] 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 similar studies, an annual reproductive cycle can be hypothesised. Sampling across two separate regions of Lakes Entrance (LE) and Western Bass Strait (WBS), U. viridis also showed regionality in several of the reproductive indices. Maximum TL and mass for females, mean size-at-birth, and female size-at-maturity and size-at-maternity in LE were markedly smaller than in WBS. In both regions litter size (1-2) increased with TL, with an exception of one female in WBS producing a litter of 3 which could be attributed to the larger TL. The implication of U. viridis producing such few young annually is they have the lowest biological productivity of any urolophid species in south-eastern Australia. Springer Science+Business Media Dordrecht, 2014 Gestation nationallicence Maternity nationallicence Maturity nationallicence Ovulation nationallicence Reproduction nationallicence Trinnie Fabian School of Life and Environmental Sciences, Deakin University, 3280, Warrnambool, Vic., Australia aut Walker Terence Department of Primary Industries, Fisheries Research Branch, PO Box 114, 3225, Queenscliff, Australia aut Jones Paul School of Life and Environmental Sciences, Deakin University, 3280, Warrnambool, Vic., Australia aut Laurenson Laurie School of Life and Environmental Sciences, Deakin University, 3280, Warrnambool, Vic., Australia aut Environmental Biology of Fishes Springer Netherlands 98/1(2015-01-01), 425-441 0378-1909 98:1<425 2015 98 10641 https://doi.org/10.1007/s10641-014-0273-4 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s10641-014-0273-4 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Trinnie Fabian School of Life and Environmental Sciences, Deakin University, 3280, Warrnambool, Vic., Australia aut NATIONALLICENCE 700 1- Walker Terence Department of Primary Industries, Fisheries Research Branch, PO Box 114, 3225, Queenscliff, Australia aut NATIONALLICENCE 700 1- Jones Paul School of Life and Environmental Sciences, Deakin University, 3280, Warrnambool, Vic., Australia aut NATIONALLICENCE 700 1- Laurenson Laurie School of Life and Environmental Sciences, Deakin University, 3280, Warrnambool, Vic., Australia aut NATIONALLICENCE 773 0- Environmental Biology of Fishes Springer Netherlands 98/1(2015-01-01), 425-441 0378-1909 98:1<425 2015 98 10641