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Population size structure, age and growth of Naucrates ductor in the small scale FADs fishery of Mallorca Island (western-Mediterranean)

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dc.creator Morales-Nin, Beatriz
dc.creator Deudero Company, María de la Salud
dc.creator Reñones, Olga
dc.date 2008-06-25T07:15:51Z
dc.date 2008-06-25T07:15:51Z
dc.date 1999
dc.date.accessioned 2017-01-31T01:47:19Z
dc.date.available 2017-01-31T01:47:19Z
dc.identifier Sci. Mar. 63(3-4): 355-366
dc.identifier 0214 - 8358 (print edition)
dc.identifier 1886 - 8134 (online edition)
dc.identifier http://hdl.handle.net/10261/5280
dc.identifier.uri http://dspace.mediu.edu.my:8181/xmlui/handle/10261/5280
dc.description Publicación online disponible en: http://www.icm.csic.es/scimar/index.php
dc.description The pilotfish (Naucrates ductor) is mainly caught as a by-catch of the dolphinfish fishery using FADs deployed around Mallorca (western-Mediterranean) from the end of August to December. The age and growth parameters of this species were estimated by length frequency analysis and daily growth increments observed in the otoliths. To validate the daily formation of the ring observed in the sagittae otoliths, a marking otoliths experiment with SrCl2 was carried out with juvenile specimens kept in laboratory conditions. The growth parameters obtained from otolith interpretation were based on age at length of 99 specimens ranging between 15 and 31.2 cm FL. Length frequency analyses were based on the monthly length distribution obtained in 1990, 1991, 1995 and 1996. The results obtained from the two methods were similar and showed rapid growth during the first 6 months of life. The von Bertalanffy growth equation from otoliths was FL= 28.97 (1-e (-6.87(t - 0.055)). Positive allometric growth was observed in the length-weight relationship, with no differences existing between sexes: W (g)= 0.0147*FL3.040 (cm).
dc.description Peer reviewed
dc.format 645459 bytes
dc.format application/pdf
dc.language eng
dc.publisher CSIC - Instituto de Ciencias del Mar (ICM)
dc.rights openAccess
dc.subject Naucrates ductor
dc.subject Validation
dc.subject Modal progression
dc.subject Daily increments
dc.subject Growth parameters
dc.subject FADs fishery
dc.subject Western Mediterranean
dc.title Population size structure, age and growth of Naucrates ductor in the small scale FADs fishery of Mallorca Island (western-Mediterranean)
dc.type Artículo


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