Aspects of maturation and reproduction in hexanchiform and squaliform sharks
Abstract:Three species of hexanchiform sharks belonging to two families and 12 species of squaliform sharks belonging to three families were recorded in fish landing site surveys in eastern Indonesia. Of these, the Squalidae were the most abundant species landed, with Squalus hemipinnis, Squalus edmundsi and Squalus montalbani contributing 0·4, 0·4 and 0·5% to the total number of sharks recorded in a 5 year survey of Indonesian fish landing sites. In comparison, the hexanchid Hexanchus griseus contributed the largest percentage to the total shark biomass. For many species, the majority of the catch consisted of immature fishes, which had not yet been able to reproduce. The data presented in this article are the first biological data reported on most of these shark species and are thus vital for fisheries managers and conservation assessors.
Document Type: Regular Paper
Affiliations: Research Center for Capture Fisheries, Department of Marine Affairs and Fisheries, Jl. Pasir Putih I, Ancol Timur, Jakarta Utara 14430, Indonesia
Publication date: 2010-04-01