Trophic ecology of Atlantic seabob shrimp Xiphopenaeus kroyeri: Intertidal benthic microalgae support the subtidal food web off Suriname

Willems, Tomas; Backer, Annelies De; Kerkhove, Thomas; Dakriet, Nyasha Nanseer; Troch, Marleen De; Vincx, Magda; Hostens, Kristian

doi:10.1016/j.ecss.2016.09.015

Cited by 34 publications

(24 citation statements)

References 85 publications

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“…nobilis ), thus providing support to coastal food-web in Sirinhaém. The importance of the benthic community for the trophic functioning of the coastal zone, specifically crustaceans, has been reported in other ecosystems affected by bottom trawl fishing, for example, in southeast Brazil [ 116 – 120 ], and in other parts of the world, such as Australia [ 121 ], Irish Sea [ 24 ] and North Sea [ 122 ]. The presence of large mud banks in these coastal areas, which usually favors large occurrences of benthic invertebrates, such as worms and crustaceans, explains this huge importance.…”

Section: Discussionmentioning

confidence: 99%

Trophic structure of a nektobenthic community exploited by a multispecific bottom trawling fishery in Northeastern Brazil

et al. 2021

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We used complementary stable isotope (SIA) and stomach content (SCA) analyses to investigate feeding relationships among species of the nektobenthic communities and the potential ecological effects of the bottom trawling of a coastal ecosystem in northeastern Brazil. Carbon (δ13C) and nitrogen (δ15N) compositions were determined for five basal sources and 28 consumers, from zooplankton to shrimp and fish species. Fishes and basal sources showed a broad range of δ15N (fishes: 6.49–14.94‰; sources: 2.58–6.79‰) and δ13C values (fishes: -23.86 to -13.71‰; sources: -24.32 to -13.53‰), while shrimps and crabs exhibited similar nitrogen and carbon ratios. Six trophic consumer groups were determined among zooplankton, crustaceans and fishes by SIA, with trophic pathways associated mostly with benthic sources. SCA results indicated a preference for benthic invertebrates, mainly worms, crabs and shrimps, as prey for the fish fauna, highlighting their importance in the food web. In overall, differences between SCA and the SIA approaches were observed, except for groups composed mainly for shrimps and some species of high δ15N values, mostly piscivorous and zoobenthivores. Given the absence of regulation for bottom trawling activities in the area, the cumulative effects of trawling on population parameters, species composition, potentially decreasing the abundance of benthic preys (e.g., shrimps, worms and crabs) may lead to changes in the trophic structure potentially affect the food web and the sustainability of the fishery.

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Section: Discussionmentioning

confidence: 99%

Trophic structure of a nektobenthic community exploited by a multispecific bottom trawling fishery in Northeastern Brazil

et al. 2021

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“…Five species, three of shrimp (Rimapenaeus similis, Xiphopenaeus kroyeri, and Farfantepenaeus subtilis) and two of portunid crabs (A. rufiremus and Callinectes ornatus), contributed more than half (66.70% of the individuals) of all the bycatch. In general, portunids are predators (Mantelatto & Christofoletti 2001, Reigada & Negreiros-Fransozo 2001, while shrimp are detritivores and omnivores (Willems et al 2016), and both are highly generalist (Eddy et al 2017). These species' predominance is consistent with the paradigm of generalists' dominance in disturbed environments (Ramsay et al 1998).…”

Section: Discussionmentioning

confidence: 99%

Invertebrates assemblage captured by a pink shrimp's fishery on Amazon continental shelf

Nóbrega

Santos

Cordeiro

et al. 2021

Lat. Am. J. Aquat. Res.

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Shrimp trawl fisheries constitute a major threat to continental shelves' biodiversity, given their profound impact on benthic communities. We investigated the composition of an invertebrate assemblage impacted by this type of fishery and possible correlations of the abundance and richness with specific environmental parameters. The activities of the industrial shrimp fleet on the north coast of Brazil were monitored over two years. We analyzed 20,303 specimens belonging to seven phyla (Porifera, Cnidaria, Mollusca, Sipuncula, Annelida, Arthropoda, Echinodermata) and 154 species. There was a predominance of generalist and rare species, given that most species (86) were sporadic. Taxonomic composition patterns were complex, dynamic, and were correlated mainly with the temperature and depth of the Amazon continental shelf, the largest in extension and low depth of the South Atlantic. The crustaceans were dominant in both abundance and taxonomic richness. The influence of environmental factors on the abundance of the main species is discussed. The invertebrates are a neglected component in studies of fisheries impact and important components of the ecological structure of the Amazon coast. They are an essential group for developing a holistic fisheries management approach, which will support the sustainability of the region's fisheries and preserve local aquatic communities.

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“…Xiphopenaeus kroyeri tem longevidade média de 2,0 anos, pelo menos dois picos reprodutivos principais anuais e taxa de crescimento elevada (FERNANDES et al, 2011;DAVANSO et al, 2017). A espécie tolera águas com temperaturas que variam entre 15°C e 30°C e salinidade entre 9 e 36, e apresenta elevada plasticidade alimentar (BOOS et al, 2016;WILLEMS et al, 2016). A partir dessas características, presume-se que X. kroyeri é capaz de se adaptar rapidamente as variações em seu hábitat, inclusive com alterações em seu crescimento relativo.…”

Section: Discussionunclassified

Relações peso-comprimento em camarões peneídeos de diferentes estoques no Sudeste do Brasil

Ferreira

Beneditto

2021

RICA

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Este estudo ajusta e compara as relações peso-comprimento de três espécies de camarões peneídeos (Xiphopenaeuss kroyeri, Artemesia longinaris e Litopenaeus schmitti) capturadas em pescarias praticadas em seis portos de pesca do sudeste do Brasil, entre 18º35’S e 22º50’S, para verificar se a simpatria entre estoques de diferentes espécies influencia o crescimento relativo. A amostragem foi realizada durante o desembarque pesqueiro em junho e julho de 2017, a partir do volume total capturado na pescaria, representando uma parcela do estoque explorado. O comprimento da carapaça e peso foram aferidos em cada indivíduo coletado. As regressões peso-comprimento (P = a*CCb) foram ajustadas para machos e fêmeas separadamente, e entre os gêneros combinados. Os coeficientes alométricos (b) indicam forte alometria negativa quanto ao crescimento relativo dos camarões para todas as espécies, gêneros e estoques estudados. O peso total dos camarões aumenta a taxa relativamente menor em comparação ao comprimento do cefalotórax. Os coeficientes alométricos não diferiram entre os estoques da mesma espécie ao longo dos portos de pesca, e nem entre fêmeas e machos considerando o mesmo estoque, independentemente da presença de outra espécie no campo de pesca. Para X. kroyeri, que se distribui nos seis portos de pesca, o crescimento relativo de fêmeas, machos e gêneros combinados foi semelhante tanto onde a pesca é monoespecífica quanto na presença de outras espécies de camarões. Esse estudo apresenta o primeiro ajuste da relação peso-comprimento em estoques naturais de L. schmitti da costa dos estados do Espírito Santo (Anchieta) e Rio de Janeiro (Macaé). Recomenda-se o acompanhamento regular dos estoques para avaliar o desenvolvimento dos camarões no longo prazo e monitorar sua dinâmica de crescimento.

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Trophic ecology of Atlantic seabob shrimp Xiphopenaeus kroyeri: Intertidal benthic microalgae support the subtidal food web off Suriname

Cited by 34 publications

References 85 publications

Trophic structure of a nektobenthic community exploited by a multispecific bottom trawling fishery in Northeastern Brazil

Trophic structure of a nektobenthic community exploited by a multispecific bottom trawling fishery in Northeastern Brazil

Invertebrates assemblage captured by a pink shrimp's fishery on Amazon continental shelf

Relações peso-comprimento em camarões peneídeos de diferentes estoques no Sudeste do Brasil

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