Diets of squid Loligo forbesi and Loligo vulgaris in the northeast Atlantic

Pierce, Graham J.; Boyle, Peter R.; Hastie, Lee C.; Santos, M.B.

doi:10.1016/0165-7836(94)90101-5

Cited by 63 publications

(67 citation statements)

References 17 publications

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“…It may be due to females expend energy for spawning primarily from food supply (low feeding activity). This results agree with (Kore &Joshi, 1975 andMohamed 2013) in the same species and (Macy, 1982;Pierce et al, 1994 andHaimovici, 1997) in other squid species.…”

Section: Empty Stomachsupporting

confidence: 82%

Food and feeding of the Indian Squid Loligo duvauceli in the Gulf of Suez, Egypt

Yassien¹,

Hussein²,

Gewida³

2016

Egypt. J. of Aquatic Biolo. and Fish.

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Food and feeding of the Indian Squid Loligo duvauceli were studied through the analysis of 702 stomachs of Squid collected from commercial trawlers working in Attaka fishing harbour of the Gulf of Suez during September 2014 to April 2015. Food was presented only in about 36 of the total stomachs examined. The occurrence of 1/4-full, 1/2-full, 3/4-full and full were 33%, 39%, 17% and 11% respectively of the examined stomachs which contained food. The empty stomachs (0) were the majority of the examined stomachs during the whole fishing season (94.87%). The food mainly composed of fish, crustacean, cephalopods and unidentified remains, digested matters and sand grains. So this species may be described as carnivorous. For both sexes (male and female) of L. duvauceli the percentage of stomach fullness decreased with the increase in the maturity stages.

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Section: Empty Stomachsupporting

confidence: 82%

Food and feeding of the Indian Squid Loligo duvauceli in the Gulf of Suez, Egypt

Yassien¹,

Hussein²,

Gewida³

2016

Egypt. J. of Aquatic Biolo. and Fish.

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“…3a) indicates an ontogenetic shift in diet towards prey of higher trophic level, as observed in many marine predatory species (Cherel and Duhamel 2003;Phillips et al 2003;Schmidt et al 2003). Small and/or juvenile squid have been found to consume mostly crustaceans; they switch to a fish-and cephalopod-based diet as they grow larger (Breiby and Jobling 1985;Lipinski 1987;Ivanovic and Brunetti 1994;Pierce et al 1994;Collins and Pierce 1996;Coelho et al 1997;Quetglas et al 1999). These changes in diet have been related to the energetic advantages of a fish diet compared to a crustacean diet (Pierce et al 1994), in addition to the simple principle that a wider size-range of prey is available to larger squid (Rodhouse and Nigmatullin 1996).…”

Section: Discussionmentioning

confidence: 99%

The trophic link between squid and the emperor penguin Aptenodytes forsteri at Pointe Géologie, Antarctica

Zimmer

Piatkowski²,

Brey

2007

Mar Biol

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Cephalopod beaks retrieved from stomachs of dead emperor penguin chicks at Pointe Géologie, Terre Adélie, provide information on taxonomic and size composition of the penguin's squid diet, on the trophic range of the squid species preyed upon and on the fractional trophic impact of the penguin on the whole food web. Emperor penguins prey upon four squid species (Psychroteuthis glacialis, Kondakovia longimana, Gonatus antarcticus, Alluroteuthis antarcticus) and do not take squid larger than 480 mm mantle length. Larger squid live either below the penguin's diving range or are beyond its handling capacity. Nitrogen stable isotope ratios indicate that squids cover a range of about two trophic levels (2.5-8& d 15 N). The impact of the emperor penguin, however, concentrates on the upper part of this range, about 68% of its squid prey being >6& d 15 N. The principal components of the emperor's diet, fish, krill and squid, differ distinctly in average trophic level. Consequently the trophic position of the emperor penguin changes accordingly with diet composition and may differ by almost one trophic level between different emperor penguin colonies.

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“…Loligo forbesi and L. vulgaris are benthopelagic species mainly feeding on fish and to a smaller extent on crustaceans, polychaetes, or other cephalopods (Roper et al 1984, Pierce et al 1994). However, they differ in their distribution: L. forbesi is usually found in depths ranging from 100 to 400 m, whereas L. vulgaris generally occurs in depths shallower than 250 m (Roper et al 1984, Lordan et al 2001a.…”

Section: Methodsmentioning

confidence: 99%

“…The enriched δ 13 C values of Eledone cirrhosa may be explained by the benthic habitat of this octopus, where baseline δ 13 C values are higher than in pelagic ecosystems (France 1995). Muscle δ 15 N values increased with the probability of a species to feed more on fish than on pelagic or benthic crustaceans in the neritic species, with L. vulgaris > S. officinalis > E. cirrhosa (Roper et al 1984, Pierce et al 1994, Pinczon du Sel et al 2000, Neves et al 2009). This is in accordance with δ Loc'h et al 2008, authors' unpubl.…”

mentioning

confidence: 99%

Inter-specific and ontogenic differences in δ13C and δ15N values and Hg and Cd concentrations in cephalopods

Chouvelon¹,

Spitz²,

Cherel³

et al. 2011

Mar. Ecol. Prog. Ser.

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Chemical tracers (e.g. stable isotopes or trace metals) are increasingly used to study trophic ecology and feeding habits of marine organisms and various factors can affect their values. The aim of the present study was to provide information on ontogenic effects on stable carbon and nitrogen values (δ N values and muscle Hg, and digestive gland Cd concentrations. Results showed that stable isotope ratios allowed discrimination of specific feeding strategies during ontogenesis. Segregation between 5 cephalopod species in terms of trophic ecology was also evidenced (different isotopic niches). In contrast, Hg concentrations varied over the same order of magnitude in these 5 cephalopod species, despite higher levels in the benthic octopus Eledone cirrhosa. Consistently, Hg concentrations followed the same ontogenic pattern and increased with increasing body size/age of cephalopods. Finally, Cd concentrations varied over 3 orders of magnitude among the 5 species. Despite possible effects of physiology in terms of metal bioaccumulation, Cd concentrations were likely to reflect specific feeding preferences or feeding zones and ontogenic variability within a single species. Thus, ontogenic effects have to be taken into account when stable isotope ratios of carbon and nitrogen or trace metals are used as ecological tracers; the best recommendation being to focus on a given class age.

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Diets of squid Loligo forbesi and Loligo vulgaris in the northeast Atlantic

Cited by 63 publications

References 17 publications

Food and feeding of the Indian Squid Loligo duvauceli in the Gulf of Suez, Egypt

Food and feeding of the Indian Squid Loligo duvauceli in the Gulf of Suez, Egypt

The trophic link between squid and the emperor penguin Aptenodytes forsteri at Pointe Géologie, Antarctica

Inter-specific and ontogenic differences in δ13C and δ15N values and Hg and Cd concentrations in cephalopods

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