e-space
Manchester Metropolitan University's Research Repository

Reproductive biology of the Endangered white-spotted sand bass Paralabrax albomaculatus endemic to the Galapagos Islands

Salinas-de-León, P and Bertolotti, A and Chong-Montenegro, C and Gomes-Do-Régo, M and Preziosi, RF (2017) Reproductive biology of the Endangered white-spotted sand bass Paralabrax albomaculatus endemic to the Galapagos Islands. Endangered Species Research, 34. pp. 301-309. ISSN 1613-4796

[img]
Preview

Available under License Creative Commons Attribution.

Download (1MB) | Preview

Abstract

© The authors 2017. The white spotted sand bass Paralabrax albomaculatus is a member of the subfamily Serraninae and is endemic to the Galapagos Islands. Locally known as camotillo, it is an important component of the local artisanal fishery that is permitted in the Galapagos Marine Reserve. Despite its Endangered status on the IUCN Red List, and its local socio-economic importance, nothing is known about its life history. The reproductive biology of P. albomaculatus was studied from samples collected between February 2013 and March 2014. Histological examination confirmed functional gonochoristic sexual reproduction. Sex ratios were biased towards females (4.36:1), and although the size distribution of males and females overlapped, the mean ± SD total length (TL) of males (45.9 ± 8.4 cm) was significantly larger than that of females (41.5 ± 7.6 cm). Length at first maturity for females was 37 cm TL. Monthly gonado-somatic indices and the presence of eggs in the hydrated sub-phase suggest a spawning season between October and March, with a reproductive peak between November and January. Given its restricted range and continuous levels of exploitation, a management plan that includes minimum and maximum landing sizes and a seasonal closure during the reproductive season is urgently required for this Endangered Galapagos endemic.

Impact and Reach

Statistics

Downloads
Activity Overview
1Download
15Hits

Additional statistics for this dataset are available via IRStats2.

Altmetric

Actions (login required)

Edit Item Edit Item