Journal of the Marine Biological Association of India

Growth and survival of Metamysidopsis elongata (Crustacea: Mysidae) from Mazatlán Bay, Sinaloa, Mexico

Volume 57 Issue 2

A. Armando Ortega Salas, L. Judith Nuñez, R. Sergio Rendón and P. Arturo Nuñez

10.6024/jmbai.2015.57.2.1866-15

Abstract

Mysids are important as food in aquaculture. In the present study, growth of embryos, juveniles, and survival of Metamysidopsis elongata was analysed. The average length (mm) of wild adult females was 5.67 ± 0.54, F1 was 5.41 ± 0.60 and 5.36 ± 0.32 for F2 and for the adult males it was 4.49 ± 0.21, 4.44 ± 0.14 for F1 first generation and 4.54 = 0.16 for F2 second generation. The length of the embryos (stage I) in wild females, F1 and F2 were found in the range of 0.28 to 0.41 (0.34 ± 0.03) mm. The increase in size of embryos from stage I to IV for wild mysids was 1.02 mm, 0.96 mm for F1 and 1.0 mm for F2. The average growth rates by von Bertalanffy model for juvenile mysids males and females were 0.304 mm day-1, 0.149 mm day-1 and 0.208 mm day-1 respectively. The average daily growth over 30 days for all mysid was 0.201 mm day-1. Females grow larger than males and survival also was greater. Culture of mysids showed a survival between 77 and 78%.

Keywords

Culture, growth, Metamysidopsis elongata, survival, Mexico.

Date : 22-12-2015