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  • 1
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    Growth of Skipjack Katsuwonus pelamis from Mozambique (2021)
    In:  http://aquaticcommons.org/id/eprint/17015 | 12051 | 2015-05-19 15:04:43 | 17015 | Instituto de Investigação Pesqueira, Mozambique
    Details
    Publication Date: 2021-07-10
    Description: Growth of skipjack, Katsuwonus pelamis in Mozambican waters was studied, using fork length data collected in 1983-1985, during an experimental pole-and-line/live-bait fishing program. Tentative estimates of growth parameters are FL∞=80 cm, K=0.6 yearˉ¹. Some evidence for seasonal growth is presented, along with a discussion of the limitations of the data set used in the investigation.
    Description: Contribution given during the course "Use of microcomputers for fishery research" held from 23rd February to 15th March 1988, IIP/NORAD/ICLARM, Maputo, Mozambique
    Keywords: Biology ; Katsuwonus pelamis ; skipjack ; growth rate ; seasonal variations ; Mozambique
    Repository Name: AquaDocs
    Type: article
    Format: application/pdf
    Format: application/pdf
    Format: 98-105
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  • 2
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    Outros recursos marinhos (2021)
    In:  http://aquaticcommons.org/id/eprint/17138 | 12051 | 2015-05-31 15:56:31 | 17138 | Instituto de Investigação Pesqueira, Mozambique
    Details
    Publication Date: 2021-07-10
    Description: The paper describes marine fish resources living in Mozambican waters. Resource data on distribution areas, reproduction, age, growth and stock size are described. Actual price of the commercially exploited stocks are also given. The problems involving the assessment of catch areas are discussed.
    Description: Paper presented at the Seminário conjunto Moçambique/Norad sobre os recursos marinhos de Moçambique, 12-15 de Junho de 1984
    Keywords: Fisheries ; marine fisheries ; stock assessment ; marine fish ; fishery resources ; Mozambique
    Repository Name: AquaDocs
    Type: article
    Format: application/pdf
    Format: application/pdf
    Format: 121-130
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  • 3
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    The deep crab - Geryon quinquedens: first notes on its biology off Mozambique (2021)
    In:  http://aquaticcommons.org/id/eprint/16882 | 12051 | 2015-05-31 15:52:41 | 16882 | Instituto de Investigação Pesqueira, Mozambique
    Details
    Publication Date: 2021-07-09
    Description: The deep crab Geryon quinquedens was the objective of an exploratory fishing operation with long lines of baited traps along the slope of southern Mozambique and was caught between 250 and 850 m. Data were analysed from the start of the operation in May, 1979 until March, 1980. The availability of the resource is discussed on the basis of catch rates. Size composition of the catches shows the bigger size of the males and suggests a stratification of the resource by area. Females dominate in shallower waters whereas the interval at which the sex-ratio equals one is identified at 400-450 m. Reproduction is discussed in connection with recruitment and an hypothesis is advanced for an exponential growth rate of about 10 mm per month.
    Keywords: Biology ; population structure ; crab fisheries ; size distribution ; sexual reproduction ; fishery biology ; recruitment ; sex ratio ; exploratory fishing ; growth curves ; stock assessment ; catch/effort ; population dynamics ; Geryon quinquedens ; Mozambique
    Repository Name: AquaDocs
    Type: article
    Format: application/pdf
    Format: application/pdf
    Format: 5-25
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  • 4
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    O desenvolvimento pesqueiro mundial, a variabilidade dos recursos e a gestão (2021)
    In:  http://aquaticcommons.org/id/eprint/15655 | 12051 | 2015-06-06 16:57:17 | 15655 | Instituto de Investigação Pesqueira, Mozambique
    Details
    Publication Date: 2021-07-09
    Description: FAO regularly releases studies on the state of fish resources exploitation (The state of world fisheries and aquaculture)and the development of fisheries by geographic areas. The 1983 and 1985 editions provided interesting discussions on fisheries development trends in the world: the majority of sea-facing countries adopted legislation that extends the national jurisdiction on the waters off their coasts (usually indicated within 200 miles) and establishes exclusive economic zones (EEZs). The huge fluctuations in the abundance of some fish stocks are obstacles to fisheries development. This issue, as well as the need to improve research activities and management of fish stocks is also analyzed in this work. The author highlighted the situation of fisheries in the Western Indian Ocean, with particular attention to tuna fisheries and to inland water resources of Mozambique.
    Keywords: Fisheries ; fishery management ; fishery resources ; fishery development ; stock assessment ; Mozambique ; Western Indian Ocean
    Repository Name: AquaDocs
    Type: article
    Format: application/pdf
    Format: application/pdf
    Format: 1-28
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  • 5
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    Growth of the buccaneer anchovy Encrasicholina punctifer off Mozambique, based on samples collected in research surveys (2021)
    In:  http://aquaticcommons.org/id/eprint/17010 | 12051 | 2015-05-19 15:04:06 | 17010 | Instituto de Investigação Pesqueira, Mozambique
    Details
    Publication Date: 2021-07-10
    Description: Growth of Encrasicholina punctifer (Engraulididae) is estimated, based on samples obtained during five surveys on Sofala Bank (central Mozambique). The estimated values of the von Bertalanffy growth function, TL∞=12 cm and K=2.0 yearˉ¹ are compared with results of growth studies elsewhere in the Indo-Pacific region, based mainly on the index Φ=log(sub)10 K+2*log(sub)10L∞ assumed to be constant within species. This comparison is rendered difficult by the uncertain taxonomical status of stolephorid anchovies.
    Description: Contribution given during the course "Use of microcomputers for fishery research" held from 23rd February to 15th March 1988, IIP/NORAD/ICLARM, Maputo, Mozambique
    Keywords: Fisheries ; Encrasicholina punctifer ; anchovies ; growth rate ; Sofala Bank ; Mozambique
    Repository Name: AquaDocs
    Type: article
    Format: application/pdf
    Format: application/pdf
    Format: 69-78
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