Stoloteuthis Leucoptera Aggiornata

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Identificazione e distribuzione nei mari italiani di specie non indigene Classe Cephalopoda Stoloteuthis leucoptera Ordine Sepiolida (Verrill,1878) Famiglia Sepiolidae SINONIMI RILEVANTI - DESCRIZIONE COROLOGIA / AFFINITA’ Tropicale Specie di piccole dimensioni; bordo dorsale del mantello fuso con la testa; natatoie molto sviluppate anteriormente, sopravanzanti il bordo DISTRIBUZIONE ATTUALE del mantello. La faccia ventrale del mantello è Anfi-atlantica settentrionale. appiattita a formare una sorta di scudetto scuro. Membrana interbrachiale estesa, interrotta fra le PRIMA SEGNALAZIONE IN MEDITERRANEO due braccia ventrali. Mar Ligure (Orsi Relini e Massi, 1991) . COLORAZIONE PRIMA SEGNALAZIONE IN ITALIA Variabile secondo l'espansione dei cromatofori che Mar Ligure (Orsi Relini e Massi, 1991). sono prevalentemente violacei e bluastri; notevole l'iridescenza che persiste anche dopo la fissazione. ORIGINE Oceano Atlantico. FORMULA MERISTICA - VIE DI DISPERSIONE PRIMARIE TAGLIA MASSIMA Attraverso lo Stretto di Gibilterra. ML fino a quasi 25 mm. VIE DI DISPERSIONE SECONDARIE STADI LARVALI Sconosciute. - SPECIE SIMILI Heteroteuthis dispar. Identificazione e distribuzione nei mari italiani di specie non indigene CARATTERI DISTINTIVI STATO DELL ’INVASIONE Si distingue da Heteroteuthis dispar , cui somiglia Instaurata. per dimensioni e forma generale, grazie alla fusione del mantello con la testa; si distingue dai MOTIVI DEL SUCCESSO membri della sottofamiglia Sepiolinae per via Sconosciuti dell'estesa membrana interbrachiale e delle ampie natatoie. SPECIE IN COMPETIZIONE - HABITAT IMPATTI Necto-bentica batiale, in corrispondenza di canyon. - PARTICOLARI CONDIZIONI AMBIENTALI DANNI ECOLOGICI - BIOLOGIA DANNI ECONOMICI Le poche informazioni disponibili suggeriscono - che le femmine producano uova relativamente grandi (3,5 – 4 mm) e si riproducano mediante IMPORTANZA PER L ’UOMO deposizione multipla; il periodo riproduttivo è Alimentare. esteso a gran parte dell’anno. BANCA DEI CAMPIONI Museo di Zoologia "La Specola", Firenze PRESENZA IN G -BANK - PROVENIENZA DEL CAMPIONE TIPOLOGIA : (MUSCOLO / ESEMPLARE INTERO / CONGELATO / FISSATO ECC ) LUOGO DI CONSERVAZIONE CODICE CAMPIONE Identificazione e distribuzione nei mari italiani di specie non indigene BIBLIOGRAFIA Orsi Relini L. e Massi D., 1991. The butterfly squid Stoloteuthis leucoptera in the Mediterranean. J. Mar. Biol. Ass. U.K., 71: 47-51. Giordano D. e Carbonara P., 1999. Nota sulla distribuzione di molluschi cefalopodi nel Tirreno Centro-Meridionale. Biol. Mar. Medit., 6(1): 573-575. Sanchez P., Belcari P. e Sartor P., 1998. Composition and spatial distribution of cephalopods in two north-western Mediterranean areas. South African J. Mar. Sci., 20: 17-24. Volpi C., Borri M. e Zucchi A., 1995. Notes on the family Sepiolidae (Mollusca, Cephalopoda) off the Northern Tuscany coast. Bull. Inst. Océanogr. Monaco, n. spécial 16: 27-34. Wurtz M., Matricardi G. e Repetto N., 1995. Sepiolidae (Mollusca, Cephalopoda) from the lower Tyrrhenian Sea, Central Mediterranean. Bull. Inst. Océanogr. Monaco, n. spécial 16: 35-39. .

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