Dear colleagues and friends
It is my pleasure to share with you the part of my thesis (on Phylogeny of the
Caenogastropoda), respect to the Stromboidea (plus Xenophoridae).
It was recently published (after 4 years of submission!) as follows:
SIMONE, L. R. L., 2005. Comparative morphological study of representatives of
the three families of Stromboidea and the Xenophoroidea (Mollusca,
Caenogastropoda), with an assessment of their phylogeny. Arquivos de Zoologia,
São Paulo, 37(2): 141-267
The abstract is:
A detailed comparative morphology of the following 21 species is made: 1)
Strombidae: Strombus pugilis (Brazil), S. alatus (Florida, USA), S. gracilior
(form Panama, Pacific coast), Eustrombus goliath (Brazil), E. gigas
(Caribbean), Aliger costatus, A. gallus (northeastern Brazil), Tricornis
raninus (Caribbean); Conomurex luhuanus, Canarium urceus, Lambis lambis,
Terebellum terebellum (all Australia), Tibia insulaechorab (Pakistan); 2)
Struthiolariidae: Struthiolaria papulosa (New Zealand), Tylospira scutulata
(Australia); 3) Aporrhaidae: Cuphosolenus serresianus n. comb., Aporrhais
occidentalis and A. pespelicani (North Atlantic and Europe); 4) Xenophoridae:
Onustus caribaeus and Xenophora conchyliophora (West Atlantic) and O. indicus
(Australia). The three former families are usually considered members of the
superfamily Stromboidea, while the Xenophoridae are included in their own
superfamily Xenophoroidea. A phylogenetic (cladistic) analysis is undertaken,
based on 102 characters (255 states); with some basal Caenogastropoda as the
main outgroup. A single most parsimonious tree was obtained (length: 209, CI:
74; RI: 86) as follows: ((T. scutulata - S. papulosa) (C. serresianus ((A.
occidentalis - A. pespelicani)((O. caribaeus – O indicus) - X.
conchyliophora)(T. terebellum (C. urceus (C. luhuanus (T. raninus (L. lambis
(S. pugilis - S. alatus- S. gracilior)((E. goliath- E. gigas) (A. costatus - A.
gallus))))))))))). According to this analysis, Stromboidea (including
Xenophoridae) is a monophyletic superfamily supported by 42 synapomorphies,
Xenophoridae and Strombidae are monophyletic, as well as Strombus, Aliger and
Eustrombus are monophyletic genera; whereas Aporrhaidae and Aporrhais are
paraphyletic taxa; the Xenophoridae are the sister taxon of the Strombidae.
Lambis lambis is represented in a branch within species currently included in
Strombus, thus some genera were revalidated (Eustrombus and Aliger) and
subgenera require elevation to genera (Strombus s.s., Tricornis, Conomurex,
Canarium).
I hope you enjoy it.
Best wishes, Luiz
--
Luiz Ricardo L. Simone, Ph.D.
Museu de Zoologia da Universidade de São Paulo
Cx. Postal 42494
04299-970, São Paulo, SP
Brazil
[log in to unmask]
www.mz.usp.br
----------------------------------------------------------------------
[log in to unmask] - a forum for informal discussions on molluscs
To leave this list, click on the following web link:
http://listserv.uga.edu/cgi-bin/wa?SUBED1=conch-l&A=1
Type your email address and name in the appropriate box and
click leave the list.
----------------------------------------------------------------------
|
