Comparative morphology of the sagittal otolith in Serranus spp.

Journal of Fish Biology - Tập 63 Số 6 - Trang 1491-1504 - 2003
Víctor M. Tuset1, Antoni Lombarte2, José A. González1, José Pertusa3, M J Lorente3
1Instituto Canario de Ciencias Marinas, Departamento de Biología Pesquera, P. O. Box 56, E-35200 Telde (Las Plamas) Canary Islands, Spain,
2Institut de Ciències del Mar (CSIC), Passeig Joan de Borbó s/n, 08039, Barcelona, Catalonia, Spain and
3Departamento de Biología Animal (U. Morfología Microscópica), C/Moliner 50, Universdad de Valencia, Spain

Tóm tắt

Variations in the morphology of saccular otoliths (sagittae) among three sympatric species of the genus Serranus(S. atricauda, S. cabrilla and S. scriba) from the Canary Islands were investigated. Although the otolith gross morphology was similar among species, S. scriba was distinct in having a rostrum which had a slight turning at the tip and a more funnel‐like ostium. The shallower water species (S. scriba) had otolith and sulcus areas which were smaller than the deeper water species (S. cabrilla and S. atricauda). The sulcus acusticus and ostium size were correlated with the habit depth of the species, with the highest values in the deepest species, S. cabrilla. The otolith outline shape indices changed with size (total length) of the species, and allowed the separation of the species by means of a discriminate function.

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