Perophora Multiclathrata Ordine Phlebobranchiata (Sluiter, 1904) Famiglia Perophoridae

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Perophora Multiclathrata Ordine Phlebobranchiata (Sluiter, 1904) Famiglia Perophoridae

Identificazione e distribuzione nei mari italiani di specie non indigene Classe Ascidiacea Perophora multiclathrata Ordine Phlebobranchiata (Sluiter, 1904) Famiglia Perophoridae SINONIMI RILEVANTI Perophora formosana (Oka, 1931) DESCRIZIONE COROLOGIA / AFFINITA’ Cosmopolita tropicale. Ascidia coloniale caratterizzata da un sistema di stoloni basali da cui si ergono i singoli zooidi. Piccole colonie di solito epibionti di talli algali, DISTRIBUZIONE ATTUALE poriferi, rami di madrepore morte, altre ascidie. I Oceano Atlantico, Indiano e Pacifico singoli zooidi (2,5 mm) sono caratterizzati da un cestello branchiale con 5 file di stigmi in cui le due PRIMA SEGNALAZIONE IN MEDITERRANEO anteriori risultano dalla divisione incompleta della Corsica (Monniot et Monniot, 1987). prima fila. Fasci muscolari evidenti nella parte centrale del singolo zooide ed intorno ai sifoni cloacali, tubo digestivo con stomaco allungato. PRIMA SEGNALAZIONE IN ITALIA Ansa intestinale, come in tutto il genere - Perophora , forma un’ansa stretta orizzontale con un corto retto. ORIGINE Oceano Atlantico, Indiano e Pacifico COLORAZIONE Tunica ed animale privi di colorazione, traslucidi. VIE DI DISPERSIONE PRIMARIE Specie fouling. Identificazione e distribuzione nei mari italiani di specie non indigene FORMULA MERISTICA VIE DI DISPERSIONE SECONDARIE - - TAGLIA MASSIMA STATO DELL ’INVASIONE - Sconosciuto STADI LARVALI Planctonici MOTIVI DEL SUCCESSO - SPECIE SIMILI Perophora listeri Wiegman, 1835 SPECIE IN COMPETIZIONE CARATTERI DISTINTIVI - Si differenzia per lo sdoppiamento della prima fila di stigmi. Fasci muscolari al centro del mantello. IMPATTI HABITAT - Infralitorale di moda calma. DANNI ECOLOGICI - PARTICOLARI CONDIZIONI AMBIENTALI Sconosciute. DANNI ECONOMICI - BIOLOGIA IMPORTANZA PER L ’UOMO Nessuna. Sconosciuta. BANCA DEI CAMPIONI - 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 Goodbody I., 1994. The tropical western atlantic Perophoridae (Ascidiacea): I. The genus Perophora. Bulletin of marine science, 55 (1): 176-192. Izquierdo-Muñoz A., Dìaz-Valdés M., Ramos-Esplà A., 2009. Recent non-indigenous ascidians in the Mediterranean Sea. Acquatic Invasions, 4, Issue 1: 59-64. Monniot C., 1972. Ascidies Phlébobranches des Bermudes. Bull. Mus. Hist. nat., Paris, 3e sér. no 82, sept.-oct., Zoologie 61: 939-948. Monniot C., 1983. Ascidies littorales de Guadeloupe II. Phlébobranches. Bull. Mus. natn. Hist. nat., Paris, 4e sér. 5, section A, no 1: 51-71. Monniot C., 1997. Ascidies Phlébobranches du canal du Mozambique. Zoosystema, 19 (4) : 557-571. Monniot C., Monniot F., 1987. Discussion sur la valeur de deux genres d’ascidies à propos d’espèces nouvelles en Méditerranée. Ann. Inst. océanogr., Paris, 63 (2) : 119-130. .

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