Size at hatching and incubation period of Sympterygia bonapartii (Müller & Henle, 1841) (Chondrichthyes, Rajidae) bred in captivity at the Temaiken Aquarium
Abstract:Two mature Sympterygia bonapartii held in captivity laid a total of 136 egg cases, 33 of them were incubated at constant temperature (16·5° C), salinity (36) and photoperiod (12L:12D). The hatching rate was 100%. Juvenile fish hatched after 135 ± 10 days (mean ±s.d.) and the mean total length, disc width and mass at hatching were 140 mm, 86 mm and 15·1 g respectively.
Document Type: Research Article
Affiliations: Fundación Temaiken, Acuario, Ruta Provincial 25 Km, 0.700 (1625), Escobar, Buenos Aires, Argentina
Publication date: February 1, 2007