The influence of upwelling on the diversity and distribution of marine shrimp (Penaeoidea and Caridea) in two tropical coastal areas of southeastern Brazil

Abstract

Two coastal locations situated inside and outside an upwelling area were investigated to assess the influence of environmental factors on the structure of marine shrimp assemblages. The locations were Macaé in the state of Rio de Janeiro (RJ), influenced by upwelling from Cabo Frio (RJ), and Ubatuba in the state of São Paulo, with no upwelling. Samples were collected monthly with trawl nets, in three sites in each location at depths of 5-20 m. The relationship between species abundance and environmental factors was tested by redundancy analysis. The total of 148,266 shrimp captured (102,832 from Macaé and 45,434 from Ubatuba) included 15 species, 13 genera, and 7 families. The caridean Periclimenes paivai was collected for the first time on the RJ coast, expanding its known geographical distribution. Higher richness and J 0 and H 0 values were obtained in the location under upwelling influence (Macaé). Environmental variables (granulometric composition and organicmatter content of sediment, bottom temperature, and salinity) were associated with the abundance of shrimp. Our results suggest that sediment type and temperature are among the most important variables affecting seasonal distribution of the species. However, other factors such as intraspecific migration might have also influenced the observed patterns.

The Cabo Frio upwelling overrides geographical patterns in the population dynamics of the shrimp Artemesia longinaris Spence Bate, 1888 (Decapoda: Penaeidae)

“…Three different stations were sampled every month to minimize possible effects of local conditions within each region ( Figure 1). F I G U R E 1 Map of the study areas (Macaé and Ubatuba) and the respective sampling stations (taken from Pantaleão et al, 2016) Sampling was performed during the day in both regions simultaneously in two different years, from July 2010 to June 2011 (year 1) and from July 2013 to June 2014 (year 2). For temporal analysis, seasons were standardized as follows: winter-from July to September; spring-from October to December; summer-from January to March; autumn-from April to June.…”

Host-use pattern of the shrimp Periclimenes paivai on the scyphozoan jellyfish Lychnorhiza lucerna: probing for territoriality and inferring its mating system

“…Periclimenes paivai is a small shrimp (maximum size = 9.2 mm CL [carapace length]- [32][33][34]), endemic to the western Atlantic coast, and is restricted to shallow waters from Rio de Janeiro to Santa Catarina, Brazil [35,36]. Periclimenes paivai has been considered a facultative commensal shrimp [33].…”

“…Periclimenes paivai has been considered a facultative commensal shrimp [33]. However, there are no records of P. paivai exhibiting a free-living lifestyle [35,36]. Periclimenes paivai is the only Brazilian species in the genus found on the surface of scyphozoan jellyfish; Phyllorhiza punctata von Lendenfeld, 1884 (as Mastigias sp.- [32]), L. lucerna, and Chrysaora lactea Eschscholtz, 1829 [33,34].…”

Ecological distribution of Nematopalaemon schmitti and Exhippolysmata oplophoroides (Crustacea: Caridea) near an upwelling area off southeastern Brazil

“…Even though these two caridean species are currently not commercially exploited, they are part of the trophic structure of softbottom environments. Additionally, N. schmitti and E. oplophoroides are the most abundant species among the caridean shrimps in Macaé region, an area located near of the upwelling in the Cabo Frio region (Silva et al, 2014;Pantaleão et al, 2016). These authors studied the composition and assemblages of shrimps (Penaeoidea and Caridea) in this region; however, the knowledge about the spatial and temporal distribution of the species in this area is scarce.…”

“…The Rio de Janeiro State has the highest fishery productivity of the southeastern region of Brazil (IBAMA, 2007) (Burkenroad, 1936) (Costa et al, 2000;Fransozo et al, 2009;Pantaleão et al, 2016). The impact of bottom-trawl shrimp fishing in coastal locations has caused significant losses in the biomass and biodiversity of non-consolidated environments (Pauly et al, 2002;Castilho et al, 2008).…”