Cephalopods
Mostrando 1-12 de 16 artigos, teses e dissertações.
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1. Mollusk bycatch in trawl fisheries targeting the Atlantic seabob shrimp Xiphopenaeus kroyeri on the coast of Sergipe, northeastern Brazil
Abstract The malacofauna bycatch of sea-bob shrimp Xiphopenaeus kroyeri (Heller, 1862) trawl fisheries on the coast of Sergipe was studied for 5 years. The malacofauna bycatch considered was obtained in nine oceanographic sampling campaigns carried out between May 1999 and June 2003 in 18 stations distributed in six transects along depths of 10, 20 and 30 m.
Pap. Avulsos Zool.. Publicado em: 03/10/2019
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2. Dieta do boto-cinza (Sotalia guianensis Van Benédén, 1864) (Cetacea: Delphinidae) na Baía de Sepetiba (RJ) / Diet of the guiana dolphin (Sotalia guianensis Van Benédén, 1864) (Cetacea: Delphinidae) in Sepetiba Bay (RJ)
The Guiana dolphin (Sotalia guianensis, Van Benédén, 1864) is a small cetacean of the Delphinidae family. The species occurs on coastal waters from South and Central America, in estuarine environments, bays and protected areas. This study aims to characterize Guiana dolphin feeding habits and to investigate variation in diet related to sex age class and se
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 27/02/2012
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3. The diet of the South American sea lion (Otaria flavescens) at Río Negro, Patagonia, Argentina, during the winter-spring period
The South American sea lion, Otaria flavescens (Shaw, 1800) population is steadily expanding along the Patagonian coast of Argentina in the last decades. However, little is known about the feeding ecology of the species in the area. The aim of this study was to analyze the food habits of O. flavescens from 91 scats collected at Río Negro province, during th
Iheringia, Sér. Zool.. Publicado em: 2012-12
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4. Feeding habits of guiana-dolphin, Sotalia guianensis (Cetacea:Delphinidae), in Guanabara Bay, Rio de Janeiro / Hábito alimentar do boto-cinza, Sotalia guianensis (Cetacea: Delphinidae) na Baía de Guanabara, Rio de Janeiro
O boto-cinza (Sotalia guianensis Van Beneden, 1864) é uma espécie de delfinídeo que ocorre em águas costeiras das Américas do Sul e Central, especialmente em ambientes estuarinos, baías e áreas protegidas. Estudos de ecologia alimentar podem prover informações sobre o comportamento das espécies e de suas presas. Nesse contexto, o conhecimento da di
Publicado em: 2010
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5. Estrutura e funcionamento dos espermatóforos de Doryteuthis plei (Mollusca: Cephalopoda) e reavaliação da reação espermatofórica dos cefalópodes / Spermatophore structure and functioning in Doryteuthis plei (Mollusca: Cephalopoda), and a reappraisal of the cephalopod spermatophoric reaction
Male coleoid cephalopods produce elaborate spermatophores, which are transferred to the female during mating. These spermatophores are capable of functioning autonomously and extracorporeally, undergoing complicated changes during the so-called spermatophoric reaction, i.e., a complex process of evagination of the spermatophoric tunics and membranes that, ul
Publicado em: 2010
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6. Diet and potential feeding overlap between Trichiurus lepturus (Osteichthyes: Perciformes) and Pontoporia blainvillei (Mammalia: Cetacea) in Northern Rio de Janeiro, Brazil
This study describes the diet and assesses potential overlap in the feeding habits of Trichiurus lepturus Linnaeus, 1758 and Pontoporia blainvilleiGervais & D'Orbigny, 1844 in northern Rio de Janeiro, southeastern Brazil. Fishes were numerically dominant in both diets, followed by cephalopods for P. blainvillei and crustaceans for T. lepturus. Both predators
Zoologia (Curitiba). Publicado em: 2009-06
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7. ECOLOGIA ALIMENTAR DOS ALBATROZES Thalassarche melanophris E T.chlororhynchos E DOS PETRÉIS Procellaria aequinoctialis E P.conspicillata NO SUL DO BRASIL.
Diet of Thalassarche melanophris (n=56), T. chlororhynchos (n=26), Procellaria aequinoctialis (n=36) e P. conspicillata (n=7) were studied in southern Brazil by using birds collected on the beach of Rio Grande do Sul and from longline off southern Brazil, between 1994 and 2004. Cephalopod beaks, fish otoliths and eye lenses were dominant in the food contents
Publicado em: 2005
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8. Biogenic amines, volatile amines, free tryptophan and urea as chemical indices for quality and freshness evaluation of fish and sellfish. / Aminas biogenicas, aminas volateis, triptofano livre e ureia como indices quimicos de qualidade e frescor do pescado.
Fish and shellfish muscle is highly susceptible to spoilage during storage. Because quality quickly decreases during storage reliable chemical indices for quality and freshness evaluation are greatly needed. Total volatile bases-nitrogen (TVB-N), trimethylamine (TMA), biogenic amines, nucleotides, urea and free tryptophan have been suggested as freshness ind
Publicado em: 2005
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9. HOX genes in the sepiolid squid Euprymna scolopes: Implications for the evolution of complex body plans
Molluscs display a rich diversity of body plans ranging from the wormlike appearance of aplacophorans to the complex body plan of the cephalopods with highly developed sensory organs, a complex central nervous system, and cognitive abilities unrivaled among the invertebrates. The aim of the current study is to define molecular parameters relevant to the deve
The National Academy of Sciences.
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10. Stable isotopes document the trophic structure of a deep-sea cephalopod assemblage including giant octopod and giant squid
Although deep-sea cephalopods are key marine organims, their feeding ecology remains essentially unknown. Here, we report for the first time the trophic structure of an assemblage of these animals (19 species) by measuring the isotopic signature of wings of their lower beaks, which accumulated in stomachs of stranded sperm whales. Overall, the species encomp
The Royal Society.
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11. Correlation between Osmolarity and Luminescence of Symbiotic Vibrio fischeri Strain ES114
Vibrio fischeri isolates from Euprymna scolopes are dim in culture but bright in the host. We found the luminescence of V. fischeri to be correlated with external osmolarity both in culture and in this symbiosis. Luminescence enhancement by osmolarity was independent of the lux promoter and unaffected by autoinducers or the level of lux expression, but the a
American Society for Microbiology.
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12. Comparison of Methods for Detection of Erysipelothrix spp. and Their Distribution in Some Australasian Seafoods
For many years, Erysipelothrix rhusiopathiae has been known to be the causative agent of the occupationally related infection erysipeloid. A survey of the distribution of Erysipelothrix spp. in 19 Australasian seafoods was conducted, and methodologies for the detection of Erysipelothrix spp. were evaluated. Twenty-one Erysipelothrix spp. were isolated from 5
American Society for Microbiology.