Biochemical composition of cephalopods with different life strategies, with special reference to a giant squid, Architeuthis sp.

Rosa, Rui; Pereira, João; Nunes, María Leonor

doi:10.1007/s00227-004-1477-5

Cited by 72 publications

(62 citation statements)

References 40 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Squid have adapted to a range of marine niches and have diversified tremendously in terms of metabolism, behaviour, body composition and life history (Hanlon & Messenger 1996, Rosa et al 2005, Seibel 2007). The body composition will thus vary significantly between different squid species from muscular, active squid to much less muscular, lethargic mid-water squid that use ammonia to stay neutrally buoyant (Clarke et al 1985).…”

Section: Discussionmentioning

confidence: 99%

Clicking for calamari: toothed whales can echolocate squid Loligo pealeii

Madsen¹,

Wilson²,

Johnson³

et al. 2007

Aquat. Biol.

View full text Add to dashboard Cite

Squid play an important role in biomass turnover in marine ecosystems and constitute a food source for ~90% of all echolocating toothed whale species. Nonetheless, it has been hypothesized that the soft bodies of squid provide echoes too weak to be detected by toothed whale biosonars, and that only the few hard parts of the squid body may generate significant backscatter. We measured the acoustic backscatter from the common squid Loligo pealeii for signals similar to toothed whale echolocation clicks using an energy detector to mimic the mammalian auditory system. We show that the dorsal target strengths of L. pealeii with mantle lengths between 23 and 26 cm fall in the range from -38 to -44 dB, and that the pen, beak and lenses do not contribute significantly to the backscatter. Thus, the muscular mantle and fins of L. pealeii constitute a sufficient sonar target for individual biosonar detection by toothed whales at ranges between 25 and 325 m, depending on squid size, noise levels, click source levels, and orientation of the ensonified squid. While epipelagic squid must be fast and muscular to catch prey and avoid visual predators, it is hypothesized that some deep-water squid may have adopted passive acoustic crypsis, with a body of low muscle mass and low metabolism that will render them less conspicuous to echolocating predators.

show abstract

Section: Discussionmentioning

confidence: 99%

Clicking for calamari: toothed whales can echolocate squid Loligo pealeii

Madsen¹,

Wilson²,

Johnson³

et al. 2007

Aquat. Biol.

View full text Add to dashboard Cite

show abstract

“…However, our values for hoki were higher than previously reported for fish of similar lengths caught around the main islands of New Zealand (vlieg 1984a), but comparable to those for hoki from waters off eastern Tasmania, australia (blaber & bulman 1987). No comparable study is available for scampi and octopus, although similar results, including low lipid contents, have been reported for other species of octopus and benthic crustaceans (Gökodlu & Yerlikaya 2003;Rosa & Nunes 2003;Rosa et al 2005;Pilar Sieiro et al 2006;Ozogul et al 2008). Graeve et al (1997) explained the lower lipid values of benthic invertebrates in comparison with pelagic species by their "sluggish life" (wait for prey) that requires minimum energetic expenditure.…”

Section: Proximate Composition and Energy Densitymentioning

confidence: 85%

“…This unexpected profile when compared with other species sharing the same trophic niche, would suggest that factors other than diet influence the Fa composition of the marine species studied, at least for squid. The Fas 20:5n-3 and 22:6n-3 originate from phytoplankton (Sargent et al 1987), and are generally found in significant amounts in cephalopod species (Phillips et al 2001;Rosa et al 2005;Ozogul et al 2008). Phillips et al (2001) hypothesised that squid selectively retain these Fas from the diet, or that this taxon is able to elongate n-3 precursors.…”

Section: Proximate Composition and Energy Densitymentioning

confidence: 99%

Proximate composition, energy content, and fatty acid composition of marine species from Campbell Plateau, New Zealand

Meynier

Morel

Mackenzie

et al. 2008

New Zealand Journal of Marine and Freshwater Research

View full text Add to dashboard Cite

Campbell Plateau is an important fishing ground for the main commercial New Zealand species. Yet, studies on trophic interactions between species and their nutritional values are limited. The objectives of this study were to determine the proximate composition and energy contents of selected commercial and non-commercial marine species from Campbell Plateau and their fatty acid (FA) composition, and to evaluate the degree to which species can be differentiated by their FA compositions. We analysed 43 fish specimens from 5 different species (Macruronus novaezelandiae, Lepidorhynchus denticulatus, Pseudophycis backus, Hemerocoetes spp. and Squalus acanthias), 17 cephalopod specimens from 2 species (Nototodarus sloani and Enteroctopus zealandicus), and 6 Metanephrops challengeri (crustacean). The variation of energy contents between fish species was not significant, but their lipid and protein contents varied significantly. FA signatures distinguished the species analysed and, at a broader scale, the type of habitat. Within-specie s variability was important for benthic species. In general, the diet inference from FA trophic markers was consistent with reported diets from stomach contents.

show abstract

“…Entretanto os níveis de C18:0 (16,36 a 11,76%), C18:1n9 (3,88 a 3,65%) e C18:2n6 (5,29 a 3,09%), revelados nesta pesquisa, indicam valores acima daqueles estipulados por Domínguez, Cortés e Várquez (2004) de 7,9 a 10,6%; 2,4 a 1,6%; e 2,0 a 0,4%, respectivamente. Rosa, Pereira e Nunes (2005), pesquisando compostos bioquímicos em 14 espécies de cefalópodes na costa de Portugal, evidenciaram que a maioria dos ácidos graxos presentes nesses indivíduos eram do saturado C 16:0; dos monoinsaturados como C18:1 e C20:1; e dos poli-insaturados como C20:4n6, C20:5n3 e C22:6n3. Sinanoglou e MiniadisMeimaroglou (1998), avaliando os níveis de lipídios em três espécies de cefalópodes do Mediterrâneo, encontraram os valores mais expressivos de C22:6n3 (24,71 a 35,70%) e de C20:5n3 (15,65 a 17,59%).…”

Section: Methodsunclassified

Efeito sazonal sobre os ácidos graxos e colesterol do polvo Octopus vulgaris Cuvier 1797

Vasconcelos¹,

Zapata

2010

Ciênc. Tecnol. Aliment.

View full text Add to dashboard Cite

Biochemical composition of cephalopods with different life strategies, with special reference to a giant squid, Architeuthis sp.

Cited by 72 publications

References 40 publications

Clicking for calamari: toothed whales can echolocate squid Loligo pealeii

Clicking for calamari: toothed whales can echolocate squid Loligo pealeii

Proximate composition, energy content, and fatty acid composition of marine species from Campbell Plateau, New Zealand

Efeito sazonal sobre os ácidos graxos e colesterol do polvo Octopus vulgaris Cuvier 1797

Contact Info

Product

Resources

About