Distribuição e abundância do ictioplâncton na plataforma continental (42-37 W, 48-21 S) no Nordeste do Brasil

Abstract

Information about distribution and abundance of ichthyplankton during the larval period is essential for fisheries biology, because the phenomena occurring in this phase are crucial for the recruitment, affecting the stock available for capture. Although research about fish eggs and larvae are common in many regions of the world, but studies for the coast of Ceará are scarce. In 2010, 54 samples were collected, divided into two campaigns. (Campaign 1 (July) and Campaign 2 (October)). The trawls were horizontal subsurface a plankton net of 300 mm in mesh. The collected material was analized and identified, and found 3,829 eggs and fish larvae 3665. In Campaign 2 showed a greater abundance of larvae, in contrast eggs showed the highest abundances in the campaign 1. Engraulidae and Gobiidae were more prominent in the campaigns. The families Gobiidae, Engraulidae and Gerreidae were classified as frequent. The species found on the continental shelf of the states of Ceará and Piauí are important fishery resources for the local population.