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MOLLUSCHI. CAVITA’ DEL CORPO ANELLIDA Aguinaldo, AMA, JM Turbeville, LS Linford, MC Rivera, JR Garey, RA Raff, & JA Lake (1997), Evidence for a clade.

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Presentation on theme: "MOLLUSCHI. CAVITA’ DEL CORPO ANELLIDA Aguinaldo, AMA, JM Turbeville, LS Linford, MC Rivera, JR Garey, RA Raff, & JA Lake (1997), Evidence for a clade."— Presentation transcript:

1 MOLLUSCHI

2 CAVITA’ DEL CORPO ANELLIDA

3 Aguinaldo, AMA, JM Turbeville, LS Linford, MC Rivera, JR Garey, RA Raff, & JA Lake (1997), Evidence for a clade of nematodes, arthropods and other moulding animals. Nature 387:

4 Peterson, KJ & DJ Eernisse (2001), Animal phylogeny and the ancestry of bilaterians: inferences from morphology and 18S rDNA gene sequences. Evol. Devel. 3: Giribet G, & C Ribera (1998), The position of arthropods in the animal kingdom: a search for a reliable outgroup for internal arthropod phylogeny. Mol Phylogen. Evol. 9: The "Procoelomates"

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6 Radiation of the mollusks from the “hypothetical ancestral mollusk

7 Salvini-Plawen and the Neontological Perspective subphylum Aculifera : Aplacophora Chaetodermomorpha (= Caudofoveata) Neomeniomorpha (= Solenogastres)Solenogastres Polyplacophora (Chitons). Subphylum Conchifera: Monoplacophora (Trybliida) Visceroconcha (=Cyrtosoma) Gastropoda Cephalopoda Loboconcha (=Diasoma) Scaphopoda Bivalvia

8 Salvini-Plawen and the Neontological Perspective

9 Salvini-Plawen and the Neontological Perspective Subphylum Conchifera: Monoplacophora (Trybliida) Visceroconcha (=Cyrtosoma) Gastropoda Cephalopoda Loboconcha (=Diasoma) Scaphopoda Bivalvia Subphylum Aculifera : Aplacophora Chaetodermomorpha (= Caudofoveata) Neomeniomorpha (= Solenogastres) Polyplacophora (Chitons).

10 1 mm Caudofoveata

11 = Chaetodermomorpha <100 specie 3-5 famiglie Limifossoridae Prochaetodermatidae Chaetodermatidae ?5 specie in Italia ?10-15 in Mediterraneo

12 Solenogastres =Neomeniomorpha

13 Solenogastres ca 25 famiglie >70 generi >200 specie

14 Ipotesi di mollusco ancestrale, tradizionale e moderno

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