Abstract
O presente estudo teve como objetivo identificar e relatar a ocorrência de larvas e ovos de peixes-de-bico na costa sudeste do Brasil. Durante duas temporadas no verão (2012/2013 e 2013/2014), 74 arrastos de superfície foram feitos utilizando rede de ictioplí¢ncton na costa de Vitória-ES, Rio de Janeiro-RJ e Ilhabela-SP, de modo que 391 larvas de peixes foram coletadas. A identificação das larvas de peixes-de-bico foi feita por biologia molecular utilizando o método do DNA barcode (gene COI). Durante a temporada de 2012/2013 foram identificadas cinco larvas de agulhões-vela e duas de agulhão-branco. Na temporada de 2013/2014, duas larvas de agulhões-branco e duas de agulhões-vela, além de dois ovos de espadarte foram identificados. A ocorrência de larvas de peixes-de-bico deve ser detalhadamente estudada para que inferências sobre a área e período de desova e desenvolvimento das fases iniciais de vida destes peixes possam ser feitas com mais precisão.
Highlights
The Istiophoridae species present in the Southwestern Atlantic are the blue marlin (Makaira nigricans, LACÉPÈDE, 1852), sailfish (Istiophorus platypterus, SHAW, 1792), white marlin (Kajikia albida, POEY, 1850), longbill spearfish (Tetrapturus pfluegeri, ROBINS and DE SYLVA, 1963) and roundscale spearfish (Tetrapturus georgii, LOWE, 1841); besides the Xiphiidae swordfish (Xiphias gladius, LINNEAEUS, 1752) acoording to AMORIM et al (2011)
Five Istiophoridae larvae captured during the January/2013 off Vitoria were identified as sailfish (Istiophorus platypterus) by the PCR multiplex
The other Istiophoridae larvae were stored for identification by mitochondrial gene COI barcode fragment sequencing
Summary
The Istiophoridae species present in the Southwestern Atlantic are the blue marlin (Makaira nigricans, LACÉPÈDE, 1852), sailfish (Istiophorus platypterus, SHAW, 1792), white marlin (Kajikia albida, POEY, 1850), longbill spearfish (Tetrapturus pfluegeri, ROBINS and DE SYLVA, 1963) and roundscale spearfish (Tetrapturus georgii, LOWE, 1841); besides the Xiphiidae swordfish (Xiphias gladius, LINNEAEUS, 1752) acoording to AMORIM et al (2011) These fish are captured by longlines on commercial fishing and by trolling on sports fishing, especially during the spawning period on the coast of Brazil, from November to March (ARFELLI and AMORIM, 1981; AMORIM and ARFELLI, 1984, 1987; ARFELLI et al, 1986; AMORIM et al, 2011).
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