Distribuição das espécies de chaetognatha na plataforma continental de Sergipe e Alagoas

Abstract

June (2002 and 2003), corresponding to the dry and rainy seasons, respectively. Oblique hauls were done with plankton net, mesh size 200 µm. Temperature, salinity, pH, dissolved oxygen and nutrients were measured in three levels of the water column. Subsamples were taken using a Stempel pippette. Correlations analysis between Chaetognatha distribution and environmental parameters were studied using canonical correspondence analysis. Sagitta tenuis and S. enflata were the most adundant species, following by S. hispida, Sagitta spp., Krohnitta pacifica, Pterosagitta draco and S. bipunctata. Density values ranged between 9 ind.m -3 , in December 2002, and 4,473 ind.m -3 in June 2002, when Sagitta tenuis and S. enflata were more abundant. Density average values decreased from stations located at 10 meters to that located at 30 meters depth. Temperature, phosphate, salinity and water transparence were correlated (p<0,05) to the Chaetognatha species distribution.

Total carotenoids and antioxidant activity of fillets and shells (in natura or cooked) of “Vila Franca” shrimp (Litopenaeus Schmitti) in different intervals of storage under freezing

“…A batch of 2.0 kg of white shrimp (Litopenaeus schmitti), from the coastline (geographic coordinates 8º8'12''S and 10º29'12''S) of Maceió-Alagoas/Brazil, where the water reaches high salinity (35.5 psu) and medium temperature 27.8 °C (Araújo, 2006), was acquired in May 2013, soon after collected. The samples were placed in plastic bags, kept in cooler box with ice and immediately transported to the laboratory.…”

The influence of environmental conditions onParasagitta friderici(Chaetognatha) abundance in a subtropical estuary (south Brazil)

“…The influence of physical and biological environment on chaetognath populations and their spatial and temporal dynamics from shelf and oceanic ecosystems is relatively well-known, with many available studies on the South-western Atlantic (e.g. Crelier & Daponte, 2004; Araújo & Ribeiro, 2005; Souza et al ., 2014) and in most other main regions worldwide (e.g. Gibbons & Stuart, 1994; Nair et al ., 2002; Ruiz-Boijseauneau et al ., 2004; Noblezada & Campos, 2012; Wu et al ., 2014).…”

Composição, distribuição, biomassa e produção secundária do zooplâncton do Sistema estuarino de Santos, São Paulo, Brasil

“…As espécies do filo Chaetognatha são exclusivamente marinhas, ocorrendo em todos os oceanos e em alguns estuários (Brusca & Brusca, 2007). No Brasil, esses organismos são um dos principais componentes do zooplâncton costeiro (Marazzo & Nogueira, 1996;Liang, 1998;Silva et al, 2004;Araújo & Ribeiro, 2005;Avila et al, 2006). Fernandes et al (2005) (Liang & Vega-Pérez, 2001;Avila et al, 2006) e associada a baixas salinidades (Mclelland, 1980), enquanto S. hispida tem preferência por água de Plataforma com salinidades de 35 a 36 (Liang & Vega-Pérez, 1994).…”