Prey contribution to the diet of pink cusk-eel Genypterus blacodes (Forster, 1801) revealed by stomach content and stable isotopic analyses in the southwestern Atlantic

Belleggia, Mauro; Álvarez, Cecilia Diamela; Pisani, Emiliano; Descalzo, Mariana; Zuazquita, Eliana

doi:10.1016/j.fishres.2023.106660

Cited by 5 publications

(3 citation statements)

References 37 publications

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“…Another bias can be due to the fact that amphipods may be ingested as prey items included in the guts of prey, and evidence of amphipod presence (whether physical, DNA or stable isotopes) may be secondary/incidental. Stomach content analysis has been widely used for fish for more than a century, and it remains a good method to examine feeding ecology (see, for example, [13,16,18,19,21,29,30]). It has also been applied to cuttlefish such as Sepia officinalis (Linnaeus, 1758) [31][32][33].…”

Section: Stomach Contentsmentioning

confidence: 99%

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Overview of Predation by Birds, Cephalopods, Fish and Marine Mammals on Marine Benthic Amphipods

Dauvin

2024

JMSE

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With about 8000 marine benthic species, the amphipod crustaceans form one of the richest animal groups of the worldwide Ocean. They have colonized a wide range of soft- and hard-bottom natural and artificial habitats extending from the intertidal to hadal zones. Moreover, they show a broad size spectrum, with numerous giant species exceeding 20 cm in length and some species smaller than 2 mm. When biofouling artificial hard surfaces, some tube-building species can form very dense populations comprising up to 100,000 individuals per square meter. Amphipods are important prey for fish and mammals. Along with cephalopod juveniles, they are also included in the trophic diet of shorebirds that consume amphipods mostly during the low tide on tidal flats. They display diel migration, which reinforces the predation by demersal fish in the suprabenthic zone just above the sea bed, as well as by pelagic fish in the water column. Despite their importance in terms of biodiversity and trophic transfer, no general overview is available on the role of benthic amphipods in marine ecosystem food webs. Various methods, including laboratory and field experiments, as well as the analysis of stomach contents and DNA extraction, have been used to identify the prey/predator trophic links. Based on an extensive literature review, this study discusses the role of marine benthic amphipods as potential food for higher trophic levels in natural and artificial hard-bottom communities created via the construction of offshore wind farms.

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Section: Stomach Contentsmentioning

confidence: 99%

“…Recently, ref. [30] studied the diet of the pink cusk-eel fish Genypterus blacodes (Forster, 1801) in the southwestern Atlantic along the Argentine coast by combining analyses of stomach contents and stable isotopes.…”

Section: Stable Isotopesmentioning

confidence: 99%

Overview of Predation by Birds, Cephalopods, Fish and Marine Mammals on Marine Benthic Amphipods

Dauvin

2024

JMSE

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“…These include the pink cuskeel Genypterus spp. (Belleggia et al 2023), the Argentine sea bass Acanthistius brasilianus, the long tail hake Macruronus magellanicus, and Rajidae skates (Sánchez and Prenski 1996).…”

Section: Introductionmentioning

confidence: 99%

Seasonal and spatial variations in macrozooplankton quality as food for fish in a SW Atlantic Ocean gulf – the role of lipids and fatty acids

Temperoni,

Naveira,

Turina

et al. 2023

Preprint

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Macrozooplankton nutritional quality is essential information to understand the energy and matter fluxes in marine food webs and their value as prey for fish. Lipid-derived energy density (ED; kJ g− 1) and polyunsaturated fatty acids content (PUFA; µg mg− 1 total lipids) of Euphausia spp. and Munida gregaria were studied along a seasonal cycle (September 2016- November 2016-January 2017), and related with their size and the spatial environmental variability (satellite chlorophyll-a (chl-a) concentration and frontal structures) of the San Jorge Gulf (45°–47°S, 65°30′-67°30ʹW; Argentinean Continental Shelf, SW Atlantic Ocean). This gulf is a key nursery and feeding ground for many commercially and ecologically relevant fish species (e.g. Merluccius hubbsi). While ED was similar in both taxa, PUFA content was significantly higher in Euphausia spp. Quality indices showed seasonal and spatial variations, while the effect of size was non-significant. For both taxa, minimum ED values occurred in winter, while for Euphausia spp. the maximum was observed in summer and for M. gregaria in spring. M. gregaria ED tightly coupled with the seasonal chl-a cycle. PUFA content also varied seasonally, with an opposite trend. Spatially, higher ED and PUFA values occurred in locations with elevated chl-a concentrations. This was mostly manifested in M. gregaria indices and less evident in Euphausia spp. Results provide novel and baseline information of zooplankton, which can be applied in food web models to understand the trophic dynamics of many fish and top predators species in the Argentinean Shelf in the current global change context.

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Nekton in the Patagonian Shelf-Break Front: Fishes and Squids

Alemany,

Belleggia,

Blanco

et al. 2024

Aquatic Ecology Series

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Prey contribution to the diet of pink cusk-eel Genypterus blacodes (Forster, 1801) revealed by stomach content and stable isotopic analyses in the southwestern Atlantic

Cited by 5 publications

References 37 publications

Overview of Predation by Birds, Cephalopods, Fish and Marine Mammals on Marine Benthic Amphipods

Overview of Predation by Birds, Cephalopods, Fish and Marine Mammals on Marine Benthic Amphipods

Seasonal and spatial variations in macrozooplankton quality as food for fish in a SW Atlantic Ocean gulf – the role of lipids and fatty acids

Nekton in the Patagonian Shelf-Break Front: Fishes and Squids

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