Trawl gear selectivity on the deep-water rose shrimp (Parapenaeus longirostris, Lucas, 1846) in the Southern Tyrrhenian Sea (central Mediterranean) (Articolo in rivista)

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  • Trawl gear selectivity on the deep-water rose shrimp (Parapenaeus longirostris, Lucas, 1846) in the Southern Tyrrhenian Sea (central Mediterranean) (Articolo in rivista) (literal)
Anno
  • 2005-01-01T00:00:00+01:00 (literal)
Alternative label
  • RINELLI P., GIORDANO D., PERDICHIZZI F., GRECO S. & RAGONESE S. (2005)
    Trawl gear selectivity on the deep-water rose shrimp (Parapenaeus longirostris, Lucas, 1846) in the Southern Tyrrhenian Sea (central Mediterranean)
    in CAHIERS DE BIOLOGIE MARINE
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • RINELLI P., GIORDANO D., PERDICHIZZI F., GRECO S. & RAGONESE S. (literal)
Pagina inizio
  • 1 (literal)
Pagina fine
  • 7 (literal)
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  • 46 (literal)
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  • 1 (literal)
Note
  • Scopu (literal)
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • CNR-IAMC, Messina CNR-IAMC, Mazara del Vallo (literal)
Titolo
  • Trawl gear selectivity on the deep-water rose shrimp (Parapenaeus longirostris, Lucas, 1846) in the Southern Tyrrhenian Sea (central Mediterranean) (literal)
Abstract
  • The deep water rose shrimp, Parapenaeus longirostris (Lucas, 1846), is one of the main target species of the Italian and Mediterranean demersal fisheries. In the Southern Tyrrhenian Sea, it represents one of the most valuable species for fishery markets. The exploitation pattern for this shrimp in the Southern Tyrrhenian area, however, has not been defined within a management plan; for example, according to the administrative autonomy of Sicily concerning fisheries regulations, fishermen have been allowed to mount a very fine diamond mesh size in the cod-end (31-36 mm stretched) in the past. Nowadays, Sicily is going to conform to the European Union legislation requirement of a minimum stretched mesh, size of 40 mm in the cod-end of the trawl net, but no study has been performed to assess the selectivity performance of the rose shrimp fishery in the investigated area. The aim of this paper is to contribute to the exploitation control of this important resource, by analysing the used trawl gear cod-end selectivity, an important tool for the management of the commercial demersal resources. A selectivity experiment, using the \"covered cod-end technique\", was carried out in the Southern Tyrrhenian Sea. Fifty-four hauls were carried out between 10 and 800 m of depth from a commercial vessel equipped with the \"Italian Tartana\" commonly used for both commercial fishery and experimental survey in this Mediterranean area. 36 and 20 mm diamond (stretched) mesh size were mounted in the cod-end and a cover respectively. On the basis of shrimp carapace length structure, observed both in cod-end and cover, a logistic model was used in order to estimate the retention length at 50%, the selection factor and the selection range. The selection process showed to be highly affected by the bottom location. in the shelf and in the slope. In any case, present selection performance seems to be inadequate for a sustainable and efficient exploitation of the resources. However, The selection parameters obtained were comparable to those found in other Mediterranean and Atlantic areas. (literal)
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