Gastropods from Camamu Bay, state of Bahia, Brazil

Abstract

The present study provides a species list of marine and estuarine gastropods from Camamu Bay, in the state of Bahia, northeastern Brazil. Expeditions to collect mollusks were carried out between 2003 and 2006 in Acaraí River estuary, using a trawling boat with otter trawl. A total of 3,193 gastropod specimens were identified, belonging to 46 families, comprising 94 species. Amongst the recorded species, all represent the first occurrence to Camamu Bay and four to the state of Bahia (genera Littoridina, Morula and the species Cadlina rumia and Polystira albida).

Inventory of mollusks from the estuary of the Paraíba River in northeastern Brazil

“…All bivalve species identified are filter feeders (see Rios 2009). Cerithiidae and Neritidae are among the most abundant families of herbivorous caenogastropods sampled from coastal environments of Brazil (Rios 2009, Ourives et al 2011, Duarte et al 2014, Longo et al 2014. Neritina virginea and Cerithium atratum were the most abundant herbivorous gastropods collected in the present study, both of which are commonly found associated with seagrass (see Longo et al 2014, Duarte et al 2015.…”

“…On the other hand, neogastropods of the families Columbellidae, Melongenidae, Muricidae, Nassariidae and Olivellidae are among the main carnivorous and/or scavenger gastropod groups living in estuarine regions (Rios 2009, Ourives et al 2011. Only one species of each family was found in the material studied, although these groups are usually more numerous in other Brazilian estuarine ecosystems (see Rios 2009, Ourives et al 2011. The columbellid Parvanachis obesa was the most abundant neogastropod collected from the estuary of the Paraíba River.…”

“…The columbellid Parvanachis obesa was the most abundant neogastropod collected from the estuary of the Paraíba River. Ourives et al (2011) identified six columbellids from Camamu Bay (in the state of Bahia), demonstrating that the species richness of this family is even greater in estuarine regions of northeastern Brazil. Although the present study does not allow an inference about potential anthropic impacts on mollusc diversity, there is likely a decline in species richness of the aforementioned families as a possible direct consequence of pollution and environmental changes in the region, making the invertebrate assemblage increasingly susceptible to a reduction of biodiversity.…”

“…Neritina virginea and Cerithium atratum were the most abundant herbivorous gastropods collected in the present study, both of which are commonly found associated with seagrass (see Longo et al 2014, Duarte et al 2015. On the other hand, neogastropods of the families Columbellidae, Melongenidae, Muricidae, Nassariidae and Olivellidae are among the main carnivorous and/or scavenger gastropod groups living in estuarine regions (Rios 2009, Ourives et al 2011. Only one species of each family was found in the material studied, although these groups are usually more numerous in other Brazilian estuarine ecosystems (see Rios 2009, Ourives et al 2011.…”

“…Ourives et al (2011) listed 94 gastropod species for Camamu Bay in the state of Bahia (northeastern Brazil). Barroso et al (2013) found 47 species of mollusks from the Grande Island estuarine complex in the state of Ceará (northeastern Brazil).…”