Seasonal variability of planktonic copepods (Copepoda: Crustacea) in a tropical estuarine region in Brazil

Seasonality, Dietary Overlap and the Role of Taxonomic Resolution in the Study of the Diet of Three Congeneric Fishes from a Tropical Bay

“…The occurrence of few species of most taxa, along with their constancy (Mysida, Amphipoda, Decapoda), is a common condition in disturbed areas such as this one [34]–[37]. Also, the number and composition of copepod species was similar to studies of plankton, that used conventional sampling methods, in similar areas [38]–[40]. Thus, Copepoda seems to be the group that best corresponds to the true proportion occurring in the bay.…”

Diel variation in the productivity of Acartia lilljeborgii and Acartia tonsa (Copepoda: Calanoida) in a tropical estuary (Taperaçu, Northern Brazil)

“…These values were higher in comparison with those observed at the same sampling site by Costa et al (2008), but lower than those recorded in other tropical estuaries on the Brazilian coast (Dias et al, 2009;Costa et al, 2012). The waters of the Amazonian littoral are relatively well oxygenated due to both intense water-atmosphere interactions (Silva et al, 2009;Sousa et al, 2009) and high local photosynthetic activity (Santos et al, 2008;Pereira et al, 2010).…”

Comparison of zooplankton community structure between impacted and non-impacted areas of Paranaguá Bay Estuarine Complex, south Brazil

“…For instance, from the Paranaguá Bay Estuarine Complex (∼25 • S) to the Amazon estuaries (∼0 • ), the number of Pseudodiaptomus species increases from two to four (Almeida Prado-Por and Lansac Tôha 1984), whereas the number of estuarine species of Oithona is the same (Rocha 1986). Generally, the copepod community observed in several estuaries from the south (Patos Lagoon estuary, ∼32 • S) to the north (Amazon estuaries) coast of Brazil is composed and dominated by the same species (Lopes et al 1998;Sterza and Loureiro Fernandes 2006;Araujo et al 2008;Dias et al 2009;Magalhães et al 2009;present work); only differences concerning the occurrence of stenohaline marine and freshwater species are observed between these estuaries. We speculate that the occurrence of similar thermohaline conditions coupled to the absence of strong physical and hydrographical barriers may explain the relatively homogeneous copepod species composition in Brazilian estuaries south of the Amazon River mouth and north of the Patos Lagoon plume.…”

“…Winkler et al 2003;Marques et al 2009). In the subtropical and tropical Southwest Atlantic, some works have focused on the distribution and occurrence of zooplankton (Fonseca and Almeida Prado 1979;Almeida Prado-Por and Lansac Tôha 1984;Krumme and Liang 2004;Dias et al 2009;Magalhães et al 2009). However, more studies are necessary to improve understanding of the role of copepods in subtropical and tropical estuaries, and environmental factors controlling this community, especially in the Paranaguá Bay Estuarine Complex, which is an important fishery ground and sustains both commercial and subsistence fisheries (Lana et al 2001).…”