Registro de Atherinella blackburni (Schultz) (Actinopterygii, Teleostei, Atherinopsidae) na praia de Ponta da Ilha, Ilha de Itaparica, Bahia, Brasil

Abstract

ABSTRACT. Record ofAt"erinella blackbumi (Schultz) (Actinopterygii, Teleostei, Atherinopsidae) in the Ponta da Ilha heach (ltaparica lsland, Bahia, Brazil). Atherinella blackburni (Schultz, 1949) Este estudo tem como objetivo contribuir para um melhor conhecimento sobre a ictiofauna presente no litoral do estado da Bahia visando fornecer maiores informações a respeito da variação intra-específica em A. blackburni e de sua ocorrência no litoral brasiLeiro. MATERIAL E MÉTODOSo material a que se refere este estudo foi coletado entre 6 de abril de 1997 e 26 de junho de L999 com auxílio de rede de arrasto manual (picaré) no período compreendido entre a baixa-mar e o início da preamar na Praia de Ponta da Ilha, localizada no sul da Ilha de ltaparica, na entrada da Baía de Todos os Santos, litoral do estado da Bahia, Brasil em seu lado oriental (cerca de 13°07"S, 38°45"W) e constituída por substrato arenoso (Fig. L).Foram capturados 29 indivíduos deA. blackburni que foram acondicionados em gelo e transportados para laboratório onde foram fixados em formalina 10% e

Atherinella blackburni (Schultz, 1949) at Itamambuca Beach, Ubatuba, SP: ecological characterization and distribution on the Brazilian coast (Teleostei: Atheriniformes: Atherinopsidae)

“…Total length (Lt, mm) and total weight (Wt, g) was taken from each individual, and then the fishes were fixed in formalin 4%, stored in ethanol 70% and deposited in the ichthyological collection of Museu de Zoologia da Universidade de São Paulo (MZUSP). The identification was made based on the works of Schultz (1949), Gilbert and Caldwell (1967) and Lopes and Oliveira-Silva (2001).…”

“…Temperature and salinity were taken with a thermometer and a refractometer, respectively. Counts and measures followed Schultz (1949), Gilbert and Caldwell (1967) and Lopes and Oliveira-Silva (2001). Measures were taken on the left side of the body, whenever possible, with a digital caliper of 0.01 mm precision.…”

“…Measures were taken on the left side of the body, whenever possible, with a digital caliper of 0.01 mm precision. Simple statistical descriptors were obtained for each meristic and morphometric character (i.e., range, average and standard deviation) which were tabled (Table 1) in comparison with data from previous works dealing with this species (Schultz, 1949;Gilbert and Caldwell, 1967;Lopes and Oliveira-Silva, 2001). (Schultz, 1949) (Figure 2) Coleotropis blackburni Schultz, 1949 [original description, type-locality: Jacuque Point, Gulf of Venezuela, Venezuela]; Gilbert and Caldwell, 1967 [description and comparison with C. starski (Schultz, 1949) -Chernoff (1986 [taxonomic account]; Aguilera, 1998 [list of species of Venezuela]; Lopes and Oliveira-Silva, 2001 [description and occurrence at Itaparica (Chernoff, 1986;Dyer and Chernoff, 1996;Dyer, 2006), there are still questions to be pursued at the species level (e.g.…”

Feeding ecology of the beach silverside Atherinella blackburni (Atherinopsidae) in a tropical sandy beach, Southeastern Brazil

“…Atherinella brasiliensis and Odontesthes bonariensis), A. blackburni prefers high water temperature and salinity (MATTOX et al, 2008), with a sparse distribution limited to the West Atlantic and occurrence throughout Central and South America. Specimens were found in Honduras (MATAMOROS et al, 2009), Costa Rica (GILBERT;CALDWELL, 1967), Venezuela (SCHULTZ, 1949;GASPAR;ÁVILA, 2009) and Brazil (GILBERT;CALDWELL, 1967;OLIVEIRA-SILVA, 2001;MAZZEI et al, 2011;PESSANHA, 2014;GARCIA-JÚNIOR et al, 2015). The current austral limit of the species is at the northern coast of São Paulo state in Brazil (GONDOLO et al, 2011).…”

“…MATTOX et al, 2008) due to their discontinuous distribution and low occurrence, and none assessing the feeding ecology of this species. Moreover, since the life cycle of A. blackburni is restricted to shallow areas of beach environments (LOPES; OLIVEIRA-SILVA, 2001;MATTOX et al, 2008), this species might be an important model for elucidating how the surf zone influences the fish species at different life stages.…”