Mudanças temporais na abundância e diversidade da fauna de peixes do infralitoral raso de uma praia, sul do Brasil

Abstract

ABSTRACT. Temporal changes in the abundance and diversity of the fish fauna in the shallow infralittoral of a beach, southern Brazil. Abundance and diversity of the fish fauna in the shallow infralittoral region of Atami Beach, Paraná, Brazil, were studied through monthly collections between July 1998 and June 1999. A total of 7553 fishes from 70 species and 26 families, mainly juvenile forms, was captured in the area. The mean captures in number of species, number of fish and biomass were larger from the end of spring to the middle of autumn; seasonal tendency in richness, diversity (number) and equitability indices were not observed. The largest mean dissimilarity in the composition of the ichthyofauna occurred between June and May in comparison to the period between July and October. The species that contributed most to this dissimilarity were Selene setapinnis (Mitchill, 1815), Conodon nobilis (Linnaeus, 1758) and Stellifer rastrifer (Jordan, 1889). Three great groups reflecting patterns of temporal occurrence of the most abundant species were identified.

Demersal ichthyofauna of the inner continental shelf off Ilhéus, Bahia, Brazil

“…The relationship between the number of species and families (2.45) was slightly smaller than values recorded in similar studies of demersal fish assemblages in State of Paraíba (2.76) (Nunes & Rosa 1998) and Balneário de Atami, State of Paraná (2.69) (Godefroid et al 2004), while being somewhat larger than that registered in a comparable study carried out in Penha, State of Santa Catarina (2.14) (Branco & Verani 2006). Thus, it remains unclear whether there are latitudinal trends in species/families ratios and their potential ecological or biogeographic significance.…”

Long-term variation in the ichthyofauna of Flamengo Cove, Ubatuba, São Paulo

“…In terms of the number of individuals, we noticed that nearly 71% of the total number of individuals was sampled in spring, although the biomasses of both seasons are nearly 50% of the total weight. This shows that there are more individuals relatively smaller in spring than in autumn, which may indicate a possible reproductive season for at least some of the species (e.g., Araújo & Santos, 1999;Bernardes & Dias, 2000;Robert & Chaves, 2001;Castello & Castello, 2003;Godefroid et al, 2004;Lima & Castello, 2007;Bruno & Muelbert, 2009). As for the biomass, approximately 71% of the total weight was sampled in 1990 although the number of individuals did not differ much between the two years.…”

“…Off the coast of São Sebastião, São Paulo State, Muto et al (2000) registered sciaenids as the most prominent family in number of species, abundance and weight and stated that Ctenosciaena gracilicirrhus, Paralonchurus brasiliensis and Cynoscion jamaicensis dominated the catches. Godefroid et al (2004) reported the Sciaenidae as the most diverse family off the coast of Paraná State with 18 of the 70 sampled species, and mentioned that four of the seven dominant species belonged to this family (Larimus breviceps, Paralonchurus brasiliensis, Stellifer brasiliensis (Schultz, 1945) and Stellifer rastrifer). They also highlighted that three of these sciaenids along with Conodon nobilis (Linnaeus, 1758) accounted for 70% of the total catch in weigth.…”

“…Ubatuba is a city in the northern coast of São Paulo State, a place where marine fishes have been studied for decades and although several works regarding marine fish ecology were conducted off the coast of Ubatuba (e.g., Nonato et al, 1983;Braga & Goitein, 1984;Rossi-Wongtschowski & Paes, 1993;Cunningham, 1995;Giannini & Paiva Filho, 1995;Rocha & Rossi-Wongtschowski, 1998;Soares & Vazzoler, 2001;Vianna et al, 2004;Souza et al, 2008;Rocha et al, 2010;Gondolo et al, 2011), none of them dealt with long-term variation of ecological parameters in the southeastern region of Brazil. In addition, as stated by Rossi-Wongtschowski et al (2009) and Menezes (2011), although the marine fishes off the coast of São Paulo are relatively well known in relation to the rest of the Brazilian coast, much is yet to be done concerning our knowledge of these organisms.…”

Diel Variations and Ecological Aspects in Fish Assemblages of a Sandy Beach in the Semi-Arid Region of Northeast Brazil.

“…In Brazil, it is noticeable that Sciaenidae contributes with the largest number of species (LoweMcConnell, 1999) and it is mentioned as the richest and most abundant family in several Brazilian studies concerning sandy beach ecosystems (Godefroid et al, 2004;Freitas et al, 2011;Dantas et al, 2012). The occurrence of few dominant species, either in number or in biomass, and the presence of many occasional and sporadic species is a commonly observed pattern in sandy beaches (Godefroid et al, 2003;Felix et al, 2007, Dantas et al, 2012.…”