2009/10/19 by A. Breves-Ramos, André Breves, Andréa de Oliveira Ribeiro Junqueira +6 · 2 citations
Earth and Planetary Sciences · Environmental Science · #Biology #Demography #Ecology #Fishery #Geography #Geology #Marine Biology and Ecology Research #Marine Bivalve and Aquaculture Studies #Marine Ecology and Invasive Species #Oceanography #Population #Population density #Population structure #Reef #Rocky shore #Shore
paper · doi:10.1017/s0025315409990919
openalex publication_date 2009/10/19 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/23
The aim of this study was to compare the population structure of the invasive bivalve Isognomon bicolor in three different areas on the coast of Rio de Janeiro State and to verify its temporal variation. All the areas presented high densities, reaching more than 1000 live individuals per 100 cm 2 . The number of dead individuals and recruits was higher in Ilha do Brandão (Angra dos Reis) than in the other areas. The individuals sampled at Praia Vermelha (Rio de Janeiro) presented the highest maximum and mean sizes, compared to those found at Ilha do Brandão. In this area, vermetid molluscs are dominant and build a complex reef structure where only a few individuals of I. bicolor can really grow.