Biology and fishery of common hake (
            <i>Merluccius hubbsi</i>
            ) and southern hake (
            <i>Merluccius australis</i>
            ) around the Falkland/Malvinas Islands on the Patagonian Shelf of the Southwest Atlantic Ocean

Arkhipkin, Alexander I.; Laptikhovsky, Vladimir; Barton, A.

doi:10.1002/9781118568262.ch6

Cited by 8 publications

(2 citation statements)

References 11 publications

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“…The hairy conger eel Bassanago albescens (Barnard, 1923) is an endemic species of the Southern Hemisphere (Figueroa 1992;Anderson 2005;Buratti et al 2020). It lives between 81 and 600 m deep (Reyes 2007) and presents a sympatric distribution with two key species in Argentine fisheries, the Argentine hake (Merluccius hubbsi) and Argentine squid (Illex argentinus) (Haimovici et al 1998;Arkhipkin et al 2015). B. albescens is an iteroparous species with a leptocephalus larva (Figueroa and Ehrlich 2006), marked sexual dimorphism (Blasina et al 2018), and benthic trophic habits (Figueroa 1999).…”

Section: Introductionmentioning

confidence: 99%

Ecología trófica del congrio de profundidad Bassanago albescens en el Atlántico Sudoccidental y sus implicancias para el manejo ecosistémico de las pesquerías

et al. 2021

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En el presente estudio se determina la composición de la dieta y estrategia alimentaria del congrio de profundidad Bassanago albescens en el Atlántico Sudoccidental (35° S-45° S), a partir del análisis del contenido estomacal de 222 individuos. La dieta consistió de cefalópodos, seguidos por isópodos, anfípodos, ofiuroideos, braquiuros y poliquetos. Los resultados mostraron diferencias significativas en la composición de la dieta entre sexos, zonas y clases de tallas que se vieron reflejadas en los cambios de la estrategia de forrajeo. Se registró un aumento progresivo en el consumo de Illex argentinus con el aumento del tamaño de B. albescens, donde los individuos más grandes mostraron una especialización en el consumo de esta presa. Estos cambios alimentarios estarían relacionados a limitaciones morfológicas y habilidades asociadas al tamaño corporal de B. albescens, teniendo los individuos más grandes acceso a presas de mayor tamaño. Nuestros resultados ayudan a comprender la biología de una especie que tiene una distribución simpátrica con dos especies clave en las pesquerías de la Argentina: Merluccius hubbsi e I. argentinus, con evidencias de una fuerte interacción trófica entre ellas. Esta nueva información sobre los recursos involucrados permitiría una optimización del manejo pesquero bajo un criterio ecosistémico.

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Section: Introductionmentioning

confidence: 99%

Ecología trófica del congrio de profundidad Bassanago albescens en el Atlántico Sudoccidental y sus implicancias para el manejo ecosistémico de las pesquerías

et al. 2021

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“…The Argentine hake Merluccius hubbsi Marini, 1933 inhabits the shelf and upper continental slope of the South-west Atlantic Ocean (SWAO) from south-eastern Brazil (21°S) to southern Argentina (55°S) (Arkhipkin et al ., 2015), at depths between 50–500 m (mainly 100–200 m) (Cohen et al ., 1990). Hake has long been the major catch in Uruguayan and Argentinean trawl fisheries (Lorenzo & Defeo, 2015; Irusta et al ., 2016), whereas in Brazil it became an important component in the landings in the early 2000s, when commercial fleets began to target shelf break and upper continental slope fishing grounds (Vaz-dos-Santos & Rossi-Wongtschowski, 2005).…”

Section: Introductionmentioning

confidence: 99%

Feeding habits and trophic status of Merluccius hubbsi along the northernmost limit of its distribution in the South-western Atlantic

et al. 2019

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Stomach contents analysis and stable isotope results indicate M. hubbsi is a generalist predator that feeds mainly on demersal fishes, followed by crustaceans and cephalopods. Ontogenetic changes in diet were identified, with fish importance increasing in the diet with hake size. Smaller hake (<250 mm) fed mostly on the sepiolid Semirossia tenera (89.45%IRI) and engraulid fish (89.96%IRI). Mid-sized hake (250–300 mm) fed mainly on benthic fish such as Bellator brachychir (95.63%IRI) and euphausiids (56.46%IRI), while larger hake (>300 mm) fed heavily on Dactylopterus volitans (94.80%IRI) and occasionally on a variety of teleosts. Significant correlations between δ13C (P < 0.05), THg (P < 0.001) and hake size occurred, whereas no relationship was observed between δ15N and hake size or δ15N and total mercury. Signatures were lowest in smaller hake with a tendency of increasing with size. Smaller and larger hake were significantly different in δ13C. Differences regarding isotopic niche width were quantified for each size group; trophic diversity and trophic redundancy among them were negligible, but hake >300 mm possibly have a larger feeding plasticity due to the combination of prey from a wide trophic level range.

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The Falkland Islands marine ecosystem: A review of the seasonal dynamics and trophic interactions across the food web

Grient¹,

Morley²,

Arkhipkin³

et al. 2023

Advances in Marine Biology

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Biology and fishery of common hake ( Merluccius hubbsi ) and southern hake ( Merluccius australis ) around the Falkland/Malvinas Islands on the Patagonian Shelf of the Southwest Atlantic Ocean

Cited by 8 publications

References 11 publications

Ecología trófica del congrio de profundidad Bassanago albescens en el Atlántico Sudoccidental y sus implicancias para el manejo ecosistémico de las pesquerías

Ecología trófica del congrio de profundidad Bassanago albescens en el Atlántico Sudoccidental y sus implicancias para el manejo ecosistémico de las pesquerías

Feeding habits and trophic status of Merluccius hubbsi along the northernmost limit of its distribution in the South-western Atlantic

The Falkland Islands marine ecosystem: A review of the seasonal dynamics and trophic interactions across the food web

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