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| Vaske Júnior,Teodoro. |
| An analysis of published data on oceanic seabirds diets, show the predominance of muscular cephalopods with superficial distribution in the oceanic layers, but also important are the gelatinous and ammoniacal species restrict to layers below 300 m from the surface. In principle, it could be not expected that deep-sea cephalopods are common prey for seabirds like several authors have been concluded. It is proposed in this study that an indirect source, important and easily attainable, have been appeared with the beginning of tuna longline operations. The habit to feed upon viscera of the fishes captured by tuna longliners, that discard the gut contents to the water, may explain the probable equivocal conclusions that deep dwelling cephalopods are natural... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Squid; Octopus; Seabirds; Prey-predator. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032011000100018 |
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| Bouth,Helena F; Leite,Tatiana S; Lima,Françoise D. de; Oliveira,Jorge E. Lins. |
| The habitat, population density, distribution and diet of Octopus insularis Leite & Haimovici, 2008 were studied in the Atol das Rocas Biological Reserve, based on visual census carried out in fixed quadrants. For each octopus den, we collected data on octopus size, substrate, type of den, and food remains around it. A total of 100 octopus dens were found within the fixed quadrants. The highest density occurred at Mapas area (0.30 inds/100 m²) and the lowest at Crista Algálica (0.07 inds/100 m²). The preferred den type was the one on the reef bed (69%), reinforcing the importance of rocky substrates for this species. A total of 454 food items, classified into 22 distinct taxa, were collected. The class Crustacea was best represented, accounting for... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Diet; Habitat; Oceanic island; Octopus. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702011000100007 |
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| Roos, David; Rungassamy, Tevamie; Huet, Jerome. |
| A diagnosis of recreational fisheries is carried out each year on the reef flat area of the Hermitage / La Saline managed by the Natural Marine Reserve of Reunion. The evolution of beach seine, fishing-rod and stick fishing activities, in terms of fishing effort and catch was analyzed. The status of exploited stocks differs according to the fishing technique. In 2018, the annual trend of catch per unit of effort indices showed 1°) an increase in the abundances of goatfish fished with beach seine, 2°) a relative stability with the fishing-rod practice and 3°) a constant decrease in octopus yields for stick fishermen. The honeycomb groupers size structure, targeted by fishing-rod fishermen, has improved. Octopus showed a decrease of larger specimens. Thus,... |
| Tipo: Text |
Palavras-chave: Pêcherie récréative; Senne de plage; Capucins nains; Mulloidichthys flavolineatus; Pêche à la gaulette; Epinephelus merra; Poulpe; Octopus cyanea; Aire Marine Protégée (AMP); Réserve Marine; La Réunion; Recreational fisheries; Beach seine; Yellowstripe goatfish; Mulloidichthys flavolineatus; Fishing-rod; Epinephelus merra; Octopus; Octopus cyanea; MPA; Marine Reserve; Reunion island. |
| Ano: 2018 |
URL: https://archimer.ifremer.fr/doc/00466/57749/60016.pdf |
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| Villanueva, Roger; Bustamante, Paco. |
| During the present study, we aimed at providing a first look at the elemental composition of the early stages of cephalopods as an approach to their elemental requirements in culture. Essential and non-essential elemental profiles of the European cuttlefish Sepia officinalis, the European squid Loligo vulgaris and the common octopus Octopus vulgaris laboratory hatchlings and wild juveniles were analysed. In addition, for O. vulgaris we determined elemental profiles of mature ovary, eggs in different stages of development and followed possible effects of four dietary treatments during paralarval rearing, also analyzing elemental content of the live preys Artemia nauplii and Maja brachydactyla hatchling zoeae. Content was determined for essential (As, Ca,... |
| Tipo: Text |
Palavras-chave: Octopus; Loligo; Sepia; Larvae; Eggs; Biochemical composition. |
| Ano: 2006 |
URL: http://archimer.ifremer.fr/doc/2006/publication-2183.pdf |
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| Farias, Ana; Pereda, Sandra V.; Uriarte, Iker; Doerner, Jessica; Cuzon, Gerard; Rosas, Carlos. |
| The aim of this study was to evaluate the performance of Patagonian octopus fed with moist diets formulated with several local feed ingredients. All formulated diets were based on crab paste (70%) and the experimental feed ingredient (30%). Experiment I assayed salmon meal, prime sardine meal, and wheat gluten, using fresh fish as a control; experiment 2 assayed prime fish meal and macroalgal meal against crab paste alone as a control. The ingestion rate was lower than expected for all diets except those of fresh fish, crab paste alone, and crab paste plus prime sardine meal. No significant differences were found in the observed digestibility of the diets, indicating, in general, low digestibility, even for fresh fish. The highest protease values were... |
| Tipo: Text |
Palavras-chave: Octopus; Emeroctopus megalocyathus; Digestibility; Enzymes; Consumption rate; Nutrition; Moist diets. |
| Ano: 2010 |
URL: http://archimer.ifremer.fr/doc/00030/14106/11342.pdf |
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| Bustamante, Paco; Lahaye, V; Durnez, C; Churlaud, C; Caurant, Florence. |
| Total (T-Hg) and organic (O-Hg) mercury concentrations and tissue distribution were examined in 20 species of cephalopods (n = 278) from the north eastern Atlantic waters, i.e. from the Bay of Biscay to the Faroe Islands. Concentrations of T-Hg in whole cephalopods showed elevated variations among species, i.e. from 40 to 3560ng g(-1) dwt, but a low variability within each species (mean CV%=39%). With the exception of oceanic squids, the digestive gland globally displayed higher T-Hg concentrations than the remaining tissues. In contrast, O-Hg concentrations determined in selected species were generally higher in the remaining tissues. Despite higher T-Hg concentrations, the digestive gland weakly contributed to the total body burden of both T-Hg and O-Hg... |
| Tipo: Text |
Palavras-chave: Cuttlefish; Octopus; Squid; Body distribution; Speciation; Bioaccumulation. |
| Ano: 2006 |
URL: http://archimer.ifremer.fr/doc/2006/publication-1873.pdf |
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