COMPARING THE USE OF BEACH SEINE AND CAST NET AT CHARACTERIZING INTERTIDAL FISH FAUNA STRUCTURE OF A SUBTROPICAL BAY

Autor(es)

Contente, Riguel Feltrin ^[1] ; del Bianco Rossi-Wongtschowski, Carmen Lucia ^[2]

Afiliação do(s) autor(es)

^[1] Inst Fed Educ Ciencia & Tecnol Para IFPA, Campus Maraba Ind, Folha 22, Lote 2, BR-68508970 Maraba, PR - Brazil

^[2] Univ Sao Paulo, Inst Oceanog, Dept Oceanog Biol, Praca Oceanog, 191, Cidade Univ, BR-05508120 Sao Paulo, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: BOLETIM DO INSTITUTO DE PESCA; v. 44, n. 3 2018.
• Citações Web of Science: 0

Resumo

Although beach seines and cast nets are widely used to sample fishes in coastal marginal habitats, a comparison between such gears at determining fish fauna structure of tidal flats during high water is lacking. Here we compared the effectiveness of a multifilament beach seine and a monofilament cast net for sampling the intertidal fish assemblage structure of a subtropical bay in Brazil. We found an overall best performance for beach seine. In comparison to cast net, the beach seine sampled (I) a substantially greater density for the local dominant species, Atherinella brasiliensis; (II) a slightly greater density for juveniles of other conspicuous species, i.e. Mugil curema, Eucinostomus argenteus, Harengula clupeola, and Oligoplites saurus, (III) a higher total and mean richness, and (IV) higher the number and abundance of benthivoies and higher the abundance of omnivores. The cast net better sampled the small planktivores, especially Sardinella brasiliensis juveniles. Such outcomes could support a future local fish-monitoring program and emphasize the great importance of evaluating the gear performance before starting fish sampling operations. (AU)

• Processo FAPESP: 13/19435-7 - Caracterização de padrões ecológicos da ictiofauna da Baía do Araçá (costa Sudeste do Brasil) através da complementaridade de métodos analíticos e amostradores
• Beneficiário: Ríguel Feltrin Contente
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado
• Processo FAPESP: 11/50317-5 - Biodiversidade e funcionamento de um ecossistema costeiro subtropical: subsídios para gestão integrada
• Beneficiário: Antonia Cecília Zacagnini Amaral
• Modalidade de apoio: Auxílio à Pesquisa - Programa BIOTA - Temático