Revista de Investigación y Desarrollo Pesquero

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Browsing Revista de Investigación y Desarrollo Pesquero by Subject "alimentación"

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    Algunas características de la estructura y del comportamiento migratorio de los cardúmenes de caballa (Scomber japonicus marplatensis) en la plataforma bonaerense (Mar Argentino) : período 1965-1984
    (Mar del Plata: Instituto Nacional de Investigación y Desarrollo Pesquero (INIDEP), 1987) Cousseau, M.B.; Angelescu, Víctor; Perrotta, R.G.
    Three periods were distinguished during the analyzed years: the first one (1965-1975) may be defined as "normal fishing seasons" occurring from October to March, with catches between 8,000 and 14,000 tons.
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    Aspectos biológico-pesqueros del abadejo (Genypterus blacodes)
    (Mar del Plata: Instituto Nacional de Investigación y Desarrollo Pesquero (INIDEP), 1986) Renzi, M.A.
    The kingklip is one of the species that has been traditionally exploited in the Argentine Sea. Although captures were not very important, they have been increased in the last years. In this paper, the structure of the concentration areas of summer, spring and winter distribution and other biological aspects were analyzed, on the basis of the data collected during cruises carried out by R/V "Walther Herwig" and R/V"Shinkai Maru" in Argentine waters during 1978/79. The trophic spectrum of the kingklip comprises mainly food species of the Classes Pisces and Crustacea as well as other complementary groups like Mollusca, Brachiopoda and haliacea.
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    Distribución y estructura poblacional de la polaca (Micromesistius australis)
    (Mar del Plata: Instituto Nacional de Investigación y Desarrollo Pesquero (INIDEP), 1982) Perrotta, R.G.
    The polaca (Micromesistius australis)is a typical fish from the cold Malvinas current (temperatures between 3° and 10°C). The species is found in depths between 90 and 800 m and in latitudes from 37°40' to 50° S during winter and spring and from 42°S to 55°S during summer time, over the patagonian shelf and Burdwood Bank. One part of the stock reaches the southern region of the Scotia Sea, the western South Georgias and eastern South Shetland Islands. The dominant food species are Euphausia spp. The polaca is mainly a carcinophagous fish and may be found in a 3-4 trophic level, being one of the main food sources for primary and secondary ichthyophagous fishes.
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    Distribución, áreas de concentración y estructura de la población del bacalao austral (Salilota australis, Gunther 1887) del Atlántico Sudoccidental
    (Mar del Plata: Instituto Nacional de Investigación y Desarrollo Pesquero (INIDEP), 1980) Perez Comas, J.A.
    The 'bacalao austral' is a typical fish from the cold water of the Southwest Atlantic and the Southeastern Pacific oceans, whose fishery has not yet developed. In this work, the structure of the concentration areas of summer and winter distribution and other biological items were analyzed, basing on data provening from R/V 'Walther Herwig' and R/V 'Shinkai Maru', which operated in these waters during 1978/79/. The trophic vertical migrations are common in this species.
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    Ecología trófica de la caballa del Mar Argentino (Scombridae, Scomber japonicus marplatensis). Parte I. Alimentación y crecimiento
    (Mar del Plata: Instituto Nacional de Investigación y Desarrollo Pesquero (INIDEP), 1979) Angelescu, Víctor
    The present study describes the morphology of the digestive system, the feeding and feeding behaviour, and the trophic relationships of the mackerel in the coastal waters regions, pelagic zone, along the Province of Buenos Aires. At the same time, this study is completed with a bioestatistical analysis on growth rhythm of body length and body weight of secondary juveniles, pre-adults and adults. All the biological information and statistical data correspond, only to the period november-march and the summer trophic habitat area.
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    Estudios sobre el régimen alimentario del mero (Acanthistius brasilianus) y su relación con las características morfométricas del sistema digestivo (Pisces, Fam.Serranidae)
    (Mar del Plata: Instituto Nacional de Investigación y Desarrollo Pesquero (INIDEP), 1987) Goldstein, H.E.; Cousseau, M.B.
    Observations on the stomach content of the sea bass have been made in order to study the trophic spectrum and the feeding habits variations, according to the season, region and individual size. On the other hand, some morphometric and meristic characters of the buccopharyngeal cavity have been statistically analyzed in relation with the total length and compared with size and shape of the preys. The following characters were studied; length and width of the mouth; size of branchial arch; number and length of the gillrakers and distance between them.