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1 November 2008 Abnormal rostrum in Polycheles typhlops (Decapoda: Polychelidae) from the central western Mediterranean
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Abstract

Anomalies of the number of rostral spines have been recorded in blind lobsters, Polycheles typhlops, caught in Sardinian waters (Central Western Mediterranean). The abnormal specimens, 66 out a total of 789 individuals analysed, showed all the morphometric characteristics of P. typhlops except for the unusual presence of two rostral spines instead of the canonical one. The analysis of partial nucleotide sequences of the mitochondrial cytochrome oxidase subunit I gene (COI) showed that the individuals with two spines were not genetically different from the normal specimens of P. typhlops, while both were quite dissimilar from the other Mediterranean species, P. sculptus. Our results suggest the need of an update of the morphological classification guides for this family combined with a wider genetic study.

Maria C. Follesa, Rita Cannas, Alice Gastoni, Serenella Cabiddu, Anna M. Deiana, and Angelo Cau "Abnormal rostrum in Polycheles typhlops (Decapoda: Polychelidae) from the central western Mediterranean," Journal of Crustacean Biology 28(4), 731-734, (1 November 2008). https://doi.org/10.1651/08-2987.1
Received: 5 February 2008; Accepted: 1 February 2008; Published: 1 November 2008
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