Reproductive biology of the eastern shovelnose stingaree Trygonoptera imitata from south-eastern Australia

Trinnie, Fabian I., Walker, Terence I., Jones, Paul L. and Laurenson, Laurie J. 2009, Reproductive biology of the eastern shovelnose stingaree Trygonoptera imitata from south-eastern Australia, Marine and freshwater research, vol. 60, no. 8, pp. 845-860.

Attached Files
Name Description MIMEType Size Downloads

Title Reproductive biology of the eastern shovelnose stingaree Trygonoptera imitata from south-eastern Australia
Formatted title Reproductive biology of the eastern shovelnose stingaree Trygonoptera imitata from south-eastern Australia
Author(s) Trinnie, Fabian I.
Walker, Terence I.
Jones, Paul L.
Laurenson, Laurie J.
Journal name Marine and freshwater research
Volume number 60
Issue number 8
Start page 845
End page 860
Total pages 16
Publisher CSIRO Publishing
Place of publication Collingwood, Vic.
Publication date 2009-08
ISSN 1323-1650
1448-6059
Keyword(s) gestation
maternity
maturity
ovulation
reproduction
Summary Abstract. In applying a quantitative approach to the reproduction of Trygonoptera imitata, the present study contributes to understanding the wide diversity in the reproductive biology of the family Urolophidae and provides insights to help determine phylogenetic relationships. This localised species is taken as bycatch in several inshore fisheries and potentially impacted by a range of other anthropogenic pressures, including introduced species, particularly in shallow-water pupping areas.T. imitata can be characterised as a species of comparatively lowmatrotrophic histotrophy with an extended period of relatively large eggs in utero (5–8 months) followed by rapid growth of the embryos (4–6 months). The reproductive cycle is annual with parturition occurring during late-February–April, followed immediately by ovulation. Mean size-at-birth is ~225mm total length and there is a ~1000% gain in mean wet mass from egg (15 g) to full-term embryo in utero (150 g), the lowest reported for any viviparous batoid. Litter size increases with maternal length, reaching a maximum of seven, and sex ratio of embryos is 1 : 1. Maximum length and estimates of the maturity–ogive parameters l50 and l95 are similar for females and males.
Language eng
Field of Research 060205 Marine and Estuarine Ecology (incl Marine Ichthyology)
Socio Economic Objective 960503 Ecosystem Assessment and Management of Coastal and Estuarine Environments
HERDC Research category C1 Refereed article in a scholarly journal
HERDC collection year 2009
Copyright notice ©2009, CSIRO Publishing
Persistent URL http://hdl.handle.net/10536/DRO/DU:30020629

Document type: Journal Article
Collection: School of Ecology and Environment
Connect to link resolver
 
Unless expressly stated otherwise, the copyright for items in DRO is owned by the author, with all rights reserved.

Versions
Version Filter Type
Citation counts: TR Web of Science Citation Count  Cited 7 times in TR Web of Science
Scopus Citation Count Cited 9 times in Scopus
Google Scholar Search Google Scholar
Access Statistics: 419 Abstract Views, 1 File Downloads  -  Detailed Statistics
Created: Wed, 14 Oct 2009, 10:35:46 EST by Teresa Treffry

Every reasonable effort has been made to ensure that permission has been obtained for items included in DRO. If you believe that your rights have been infringed by this repository, please contact drosupport@deakin.edu.au.