A comparative study of the diet of Loligo vulgaris (Lamarck, 1799) (Mollusca:Cephalopoda) from the south coast of Portugal and the Saharan Bank (Central-East Atlantic)

Coelho, M.L.; Domíngues, Pedro; Balguerías, Eduardo; Fernandez, Michel; Andrade, J.P.

doi:10.1016/s0165-7836(96)00540-1

Cited by 34 publications

(28 citation statements)

References 20 publications

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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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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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“…During El Niño-events the abundance of Octopus mimus increases in northern Chile which reflects in the catches (Castilla and Camus 1992; Defeo and Castilla 1998). This may provoke cannibalistic behaviour as a strategy of population regulation that can stabilize population (1880) Common Roper et al (1984) Todarodes sagittatus Lamarck (1798) Common Quetglas et al (1999) Todaropsis eblanae Ball (1841) Common Lordan et al (1998) b Ommastrephes bartrami Lesueur (1821) High Inter-cohort Roper et al (1984), Lipinski and Linkowski (1988), Ivanovic and Brunetti (2004) (1832) Common Roper et al (1984), Steer et al (2003) Uroteuthis duvauceli d'Orbigny (1835) Common Roper et al (1984) Doryteuthis opalescens Berry (1911) Common Roper et al (1984) Doryteuthis pealeii Lesueur (1821) Common Roper et al (1984), Maurer and Bowman (1985) Loligo forbesi Steenstrup (1856) Common Inter-cohort Roper et al (1984), Rocha et al (1994) Loligo vulgaris Lamarck (1798) Common Inter-cohort Roper et al (1984), Sauer and Lipinski (1991), Rocha et al (1994), Coelho et al (1997) (Claessen et al 2004). However, in these periods high densities of bivalves, the main food of O. mimus (Cortez et al 1995), were also found (Castilla and Camus 1992) which could keep the rate of cannibalism low.…”

Section: Effects Of Cannibalism On Population Dynamicsmentioning

confidence: 99%

“…In loliginid squids cannibalism generally has been associated with limited food resources (Santos and Haimovici 1998). Cannibalism in Loligo vulgaris of the Saharan Bank is related to the high abundance of juveniles that constitute an alternative prey when other food is scarce (Coelho et al 1997). In years of food shortages higher cannibalistic behaviour were observed also for I. illecebrosus (Maurer and Bowman 1985) and I. argentinus (Santos and Haimovici 1997).…”

Section: Cannibalism As a Strategy When Food Is Scarcementioning

confidence: 99%

Cannibalism in cephalopods

Ibáñez

Keyl

2009

Rev Fish Biol Fisheries

133

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Cannibalism refers to the action of consuming a member of the same species and is common in many taxa. This paper reviews the available literature on cannibalism in cephalopods. All species of the class Cephalopoda are predators and cannibalism is common in most species whose diet has been studied. Cannibalism in cephalopods is densitydependent due to their aggressive predatory and in case of the octopuses territorial nature. It also depends upon local and temporal food availability and of the reproductive season. Cannibalistic behaviour is positively related to the size of both cannibal and victim. It can affect population dynamics of cephalopods in periods of low food availability and/or high population abundance. Cephalopods are generally restricted in their ability to store energy. It is thus assumed that cannibalism is part of a population energy storage strategy enabling cephalopod populations to react to favourable and adverse environmental conditions by increasing and reducing their number. Finally, we propose five orientation points for future research on cannibalism in cephalopods.CM Ibáñez was supported by a CONICYT doctoral fellowship

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“…The higher values of fishes and crustaceans in the stomach contents could be related to their preference for these kinds of prey or to their availability in the octopuses' environment. It is worth noting that the results obtained from this benthic octopodid in Viana do Castelo and Tavira did not seem to corroborate the generalisation that benthic species tend to prey mainly on crustaceans while fishes predominate in the pelagic species (Castro and Guerra, 1990;Cortez et al, 1995;Coelho et al, 1997). In fact, according to Boyle (1990), the prey spectrum in the diet is related to the most readily available prey.…”

Section: Feeding Ecologymentioning

confidence: 65%

Spatial-temporal changes in dimethyl acetal (octadecanal) levels of <i>Octopus vulgaris</i> (Mollusca, Cephalopoda): relation to feeding ecology

Rosa¹,

Marques²,

Nunes³

et al. 2004

Sci. Mar.

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SUMMARY: The present study aimed to identify and quantify the dimethyl acetal (DMA) levels in the muscle of Octopus vulgaris Cuvier, 1797, and to investigate the possible influence of octopus feeding ecology on their spatial and seasonal variations. The research was performed over one year in three areas of the Portuguese coast: Viana do Castelo, Cascais and Tavira. Significantly higher values of DMA were detected in Tavira (p<0.05), an area where the importance of bivalves in the octopus' diet was higher. The biochemical analyses performed in several prey items, belonging to five major taxonomic groups identified in octopus stomachs, revealed significant differences in DMA levels (p<0.05). The highest values were obtained in bivalves (1.15 mg 100 g -1 dry weight), followed by gastropods (0.74 mg 100g -1 dw), cephalopods (0.67 mg 100 g -1 dw), crustaceans (0.23 mg 100 g -1 dw) and osteichthyes (0.10 mg 100 g -1 dw). Therefore, based on these findings it can be speculated that the higher DMA levels in O. vulgaris obtained in Tavira throughout the year were evidence of its feeding ecology. Since DMAs are derived from ether glycerophospholipids, including plasmalogens (PLMs), the importance and role of this phospholipid class is discussed.Key words: Octopus vulgaris, dimethyl acetal, plasmalogens, phospholipids, feeding ecology. RESUMEN: CAMBIOS ESPACIO-TEMPORALES EN LOS NIVELES DE DIMETIL ACETAL (OCTADENAL) DE OCTOPUS VULGARIS(MOLLUSCA: CEPHALOPODA): RELACIÓN CON LA ECOLOGÍA TRÒFICA. -El presente trabajo ha tenido como objetivo la identificación y la cuantificación del nivel de dimetil acetal (DMA) en el músculo de Octopus vulgaris Cuvier, 1797, e investigar la influencia de la ecología alimentaria del pulpo en los variaciones espacio-temporales de este compuesto. El estudio ha sido realizado durante un año en tres zonas de la costa portuguesa: Viana do Castelo, Cascais y Tavira. Se han obtenido valores significativamente superiores del DMA (p<0.05) en Tavira, un área donde la importancia relativa de los bivalvos en la dieta fue superior. Los análisis bioquímicos realizados en distintos tipos de presas, pertenecientes a los cinco grupos taxonómicos identificados en los contenidos estomacales del pulpo, han revelado la existencia de diferencias significativas en los niveles de DMA entre los grupos (p<0,05). Los valores más elevados han sido obtenidos en los bivalvos (1.15 mg 100 g -1 ), seguidos de los gasterópodos (0.74 mg 100 g -1 ), cefalópodos (0.67 mg 100 g -1 ), crustáceos (0.23 mg 100 g -1 ) e osteichthies (0.10 mg 100 g -1 ). En base a estos resultados se puede especular que los valores más elevados obtenidos en Tavira a lo largo de todo el año constituyen una evidencia de la ecología alimentar del pulpo. Dado que los DMA son derivados de los eter glicerofosfolípidos, donde se incluyen los plasmalogénos (PLM), se discute la importancia y el papel funcional de esta clase de fosfolípidos.

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A comparative study of the diet of Loligo vulgaris (Lamarck, 1799) (Mollusca:Cephalopoda) from the south coast of Portugal and the Saharan Bank (Central-East Atlantic)

Cited by 34 publications

References 20 publications

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

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

Cannibalism in cephalopods

Spatial-temporal changes in dimethyl acetal (octadecanal) levels of <i>Octopus vulgaris</i> (Mollusca, Cephalopoda): relation to feeding ecology

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