The maturity and reproduction of the Atlantic angel shark Squatina dumeril were assessed using 77 females (29·2-110·4 cm total length; LT ) and 269 males (58·7-108·2 cm LT ) harvested by artisanal gillnetters off Venezuela. The biased sex ratio implied segregation or sex-specific gear selectivity. Based on the development of the reproductive tract, 50% LT at sexual maturity (LT50 , mean ± s.e.) for females and males were estimated at 86·14 ± 0·64 and 81·55 ± 0·12 cm, respectively. Uterine fecundity ranged between one and six and with a maximum embryo size of 25·7 cm LT . Gravid females were observed from August to December, including those close to parturition and while the gestation period was not confirmed, the size of ovarian follicles among some specimens implied protraction. The low fecundity of the species supports close monitoring of catches.
Journal article
Reproductive aspects of the Atlantic angel shark Squatina dumeril in the southern Caribbean Sea
Journal of Fish Biology, Vol.91(4), pp.1062-1071
2017
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Abstract
Details
- Title
- Reproductive aspects of the Atlantic angel shark Squatina dumeril in the southern Caribbean Sea
- Creators
- Alejandro Tagliafico - Southern Cross UniversityS Rangel - Southern Cross UniversityMatt K Broadhurst - Southern Cross University
- Publication Details
- Journal of Fish Biology, Vol.91(4), pp.1062-1071
- Identifiers
- 4402; 991012820874702368
- Academic Unit
- School of Environment, Science and Engineering; Faculty of Science and Engineering; Marine Ecology Research Centre; National Marine Science Centre
- Resource Type
- Journal article