The importance of shallow areas as nursery grounds for the recruitment of blue crab (Callinectes sapidus) juveniles in subtropical estuaries of Southern Brazil

Rodrigues, Marcos Alaniz; Ortega, Ileana; D’Incao, Fernando

doi:10.1016/j.rsma.2018.100492

Cited by 9 publications

(13 citation statements)

References 42 publications

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“…The presence of submerged vegetation near the lower salinity and finer grain sizes appear to be ecosystem indicators selected by both juveniles (Ruas et al ., 2014 and present study) and individuals in moult (present study) in the PLE in order to reduce predation. In the absence of vegetation, all juveniles tend to prefer the estuary embayment which offers protection against high energy events (high currents) of the main lagoon channel (Rodrigues et al ., 2019).…”

Section: Discussionmentioning

confidence: 99%

“…Studies on the Patos Lagoon estuary have investigated C. sapidus juvenile development (Barutot et al ., 2001), diet (Oliveira et al ., 2006; Ferreira et al ., 2011), reproductive biology (Rodrigues & D'Incao, 2014), influence of salinity and seagrass meadows on spatial distribution (Ruas et al ., 2014), population connectivity with other estuaries of South Brazil (Lacerda et al ., 2016) and the distribution of recruits (Rodrigues et al ., 2019); but some further aspects still remain to be detailed. These studies concluded that there is a high connectivity among blue crab populations of the south-western Atlantic (Lacerda et al ., 2016); their diet is influenced by food availability in the environment and is mainly based on macroinfaunal organisms (Oliveira et al ., 2006; Ferreira et al ., 2011); and habitat selection is influenced by salinity and presence of seagrass meadows (Ruas et al ., 2014), but in the absence of seagrass smaller individuals search for refuge in areas protected from the high currents of the estuary (Rodrigues et al ., 2019).…”

Section: Introductionmentioning

confidence: 99%

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Habitat use in different life and moulting stages of Callinectes sapidus (Decapoda, Portunidae) in South Brazilian estuarine and marine environments

et al. 2019

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The blue crab Callinectes sapidus is an important ecological and commercial species. It plays a fundamental role in the structure and function of coastal benthic food webs, with global catches of ~74,357 tons. This is the most exploited portunid species in Brazil. However, few studies about the ecology and population dynamics of C. sapidus have been published. This study aimed to analyse the preferred areas for the spatial distribution of juveniles and moulting individuals of C. sapidus in shallow areas of the Patos Lagoon estuary and the adjacent marine reproductive area, and their relation to water and sediment characteristics. Juveniles and moulting individuals preferred the embayment of the upper estuary, where the sediments are finer, with higher contents of organic matter and the presence of submerged vegetation. There was also a temporal variability in the abundance of juvenile size classes, with two marked increments of smaller individuals: (1) in late spring and summer and (2) in winter, indicating two recruitment peaks. Unusual environmental conditions in the summer of the first year, with an increase of fine sediments and organic matter, combined with low salinities in the adjacent marine area, allowed recruitment of individuals there. We suggest better attention to the embayment around the Marinheiros Island (considered here as upper estuary) for management and protection measures due to the overlapping of recruitment preferences of the blue crab, pink shrimp and fish species in this area.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Habitat use in different life and moulting stages of Callinectes sapidus (Decapoda, Portunidae) in South Brazilian estuarine and marine environments

et al. 2019

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“…30°30′S and 32°12′S, in the south of Brazil (Figure ; Seeliger & Odebrecht, ). The Patos Lagoon estuary (PLE) is located at the southern end of the Lagoon, covering approximately 10% of its total area (Asmus, ; Figure ), and is characterised by nursery grounds, feeding and reproduction areas of fish (Garcia & Vieira, ; Haimovici et al, ; Seeliger & Odebrecht, ) and crustacean stocks (Rodrigues, Ortega, & D'Incao, ; Ruas, Rodrigues, Dumont, & D'Incao, ). Artisanal fishing is mainly commercial, and uses gillnets, small bottom trawls and fyke nets for shrimps.…”

Section: Methodsmentioning

confidence: 99%

Long‐term changes in fishery resources of an estuary in southwestern Atlantic according to local ecological knowledge

Thykjaer

Rodrigues

Haimovici

et al. 2019

Fisheries Management Eco

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Long‐term changes in the abundance of fisheries resources from the Patos Lagoon estuary and adjacent coastal waters in southern Brazil have been observed. Despite this understanding, it is well known that the perception of pristine state of the environment is susceptible to inter‐generational changes, commonly known as shifting baseline syndrome (SBS). An useful approach in the reconstruction of pristine scenarios and in lack of data, as often occurs in small‐scale fisheries, is the local ecological knowledge (LEK). Temporal changes in the perception of 81 fishers with 1–63 years of fishing about the resources status were analysed. More experienced fishers reported larger catches, heavier individuals and perceived a greater number of species as "scarce" nowadays and "common" at the beginning of their careers proving the existence of a SBS among them. Over time, the number of fishing sites with very high catches decreased and fishing sites shifted from the lower towards the upper estuary. The perception of the fishers corroborated the real decreasing scenario in estuarine fisheries resources shared with industrial fishing in coastal waters. The results reinforce the utility of LEK for reconstruction of biological scenarios when no empirically obtained data are available.

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“…2B). Although crabs in this region do not become fully dormant, they do have annual peaks of activity, including peaks of recruitment and reproduction (Rodrigues et al 2019).…”

Section: Life Historymentioning

confidence: 99%

“…In warmer waters, such as the southern US Atlantic, Gulf of Mexico, and Caribbean Sea, C. sapidus have an extended spawning period, year-round recruitment, and are continuously active (Adkins 1972, Hsueh et al 1993). In the higher latitudes of Brazil and south to Argentina, blue crab activity again becomes seasonal as winter water temperatures approach 10°C (Rodrigues et al 2019).…”

Section: Introductionmentioning

confidence: 99%

Climate and season are associated with prevalence and distribution of trans-hemispheric blue crab reovirus (Callinectes sapidus reovirus 1)

Zhao

Behringer

Bojko

et al. 2020

Mar. Ecol. Prog. Ser.

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Among the many Callinectes spp. across the western Atlantic, the blue crab C. sapidus has the broadest latitudinal distribution, encompassing both tropical and temperate climates. Its life history varies latitudinally, from extended overwintering at high latitudes to year-round activity in tropical locations. Callinectes sapidus reovirus 1 (CsRV1) is a pathogenic virus first described in North Atlantic C. sapidus and has recently been detected in southern Brazil. Little information exists about CsRV1 prevalence at intervening latitudes or in overwintering blue crabs. Using a quantitative reverse transcription PCR (RT-qPCR) method, this study investigated CsRV1 prevalence in C. sapidus across latitudinal differences in temperature and crab life history, as well as in additional Callinectes spp. and within overwintering C. sapidus. CsRV1 prevalence in C. sapidus was significantly correlated with high water temperature and blue crab winter dormancy. Prevalence of CsRV1 in C. sapidus on the mid-Atlantic coast was significantly lower in winter than in summer. CsRV1 infections were not detected in other Callinectes spp. These findings revealed that CsRV1 is present in C. sapidus across their range, but not in other Callinectes species, with prevalence associated with temperature and host life history. Such information helps us to better understand the underlying mechanisms that drive marine virus dynamics under changing environmental conditions.

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The importance of shallow areas as nursery grounds for the recruitment of blue crab (Callinectes sapidus) juveniles in subtropical estuaries of Southern Brazil

Cited by 9 publications

References 42 publications

Habitat use in different life and moulting stages of Callinectes sapidus (Decapoda, Portunidae) in South Brazilian estuarine and marine environments

Habitat use in different life and moulting stages of Callinectes sapidus (Decapoda, Portunidae) in South Brazilian estuarine and marine environments

Long‐term changes in fishery resources of an estuary in southwestern Atlantic according to local ecological knowledge

Climate and season are associated with prevalence and distribution of trans-hemispheric blue crab reovirus (Callinectes sapidus reovirus 1)

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