Growth and Mortality of the Red Shrimp Aristaeomorpha Foliacea in the Sicilian Channel (Mediterranean Sea)

Growth and Mortality of the Red Shrimp Aristaeomorpha Foliacea in the Sicilian Channel... GROWTH AND MORTALITY OF THE RED SHRIMP ARISTAEOMORPHA FOLIACEA IN THE SICILIAN CHANNEL (MEDITERRANEAN SEA) BY SERGIO RAGONESE1), MARCO L. BIANCHINI2,3) and VINCENT F. GALLUCCI3) 1) Ist. Tecnologia Pesca e Pescato, CNR, Via Vaccara, Mazara (TP), Italy; 2) P.F. RAISA, CNR, Via Tiburtina 770, Roma, Italy; 3) School of Fisheries, University of Washington, Seattle, WA, U.S.A. ABSTRACT The deep water red shrimp Aristaeomorpha foliacea is an important commercial species for the trawl fisheries in the Sicilian Channel (Central Mediterranean Sea; FAO statistical area 37.5). An assessment program was recently implemented by ITPP-CNR. Two years of seasonal research trawl surveys were carried out on the Italian side of the Sicilian Channel. A time series of length-frequency distributions has been analyzed using different techniques; the results are used to estimate growth and mortality parameters of the stock. In females, two modal pulses can be discriminated for the juveniles while two-to-three "years" are visible for the adults. Female growth can well be represented by a Von Bertalanffy function: as with other species, too, there are two possible growth hypotheses, slower and faster; A. foliacea females appear to grow relatively fast anyhow. Female total annual mortality (Z) is estimated around 0.65, with http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Crustaceana Brill

Growth and Mortality of the Red Shrimp Aristaeomorpha Foliacea in the Sicilian Channel (Mediterranean Sea)

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Publisher
Brill
Copyright
© 1994 Koninklijke Brill NV, Leiden, The Netherlands
ISSN
0011-216x
eISSN
1568-5403
DOI
10.1163/156854094X00459
Publisher site
See Article on Publisher Site

Abstract

GROWTH AND MORTALITY OF THE RED SHRIMP ARISTAEOMORPHA FOLIACEA IN THE SICILIAN CHANNEL (MEDITERRANEAN SEA) BY SERGIO RAGONESE1), MARCO L. BIANCHINI2,3) and VINCENT F. GALLUCCI3) 1) Ist. Tecnologia Pesca e Pescato, CNR, Via Vaccara, Mazara (TP), Italy; 2) P.F. RAISA, CNR, Via Tiburtina 770, Roma, Italy; 3) School of Fisheries, University of Washington, Seattle, WA, U.S.A. ABSTRACT The deep water red shrimp Aristaeomorpha foliacea is an important commercial species for the trawl fisheries in the Sicilian Channel (Central Mediterranean Sea; FAO statistical area 37.5). An assessment program was recently implemented by ITPP-CNR. Two years of seasonal research trawl surveys were carried out on the Italian side of the Sicilian Channel. A time series of length-frequency distributions has been analyzed using different techniques; the results are used to estimate growth and mortality parameters of the stock. In females, two modal pulses can be discriminated for the juveniles while two-to-three "years" are visible for the adults. Female growth can well be represented by a Von Bertalanffy function: as with other species, too, there are two possible growth hypotheses, slower and faster; A. foliacea females appear to grow relatively fast anyhow. Female total annual mortality (Z) is estimated around 0.65, with

Journal

CrustaceanaBrill

Published: Jan 1, 1994

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