New Zealand Journal of Zoology abstracts
Four trematode cercariae from the New Zealand intertidal snail Zeacumantus
subcarinatus (Batillariidae)
Sergio R. Martorelli
Centro de Estudios Parasitólogicos y Vectores (CEPAVE)
2 Nro. 584, 1900 La Plata
Buenos Aires, Argentina
Brian L. Fredensborg
Department of Biology
University of Texas Pan-American
Edinburg, TX 78539, USA
Tommy L. F. Leung
Robert Poulin*
Department of Zoology
University of Otago
PO Box 56
Dunedin 9054, New Zealand
*Author for correspondence:
robert.poulin@stonebow.otago.ac.nz
Abstract The cercariae and sporocysts (or
rediae) of four
trematode species are described from the intertidal snail Zeacumantus
subcarinatus: a distome xiphidiocercaria assigned to the genus Renicola
(family Renicolidae); a monostome xiphidiocercaria belonging either to
the genus Microphallus or Megalophallus (family
Microphallidae); a magnacercous cercaria of the genus Galactosomum
(family Heterophyidae); and a cercaria of the genus Philophthalmus
(family Philophthalmidae). The morphological features of these
cercariae are compared to previously described cercariae of the same
genera. In addition, since the philophthalmid cercaria encysts readily
on artificial substrates in the laboratory, the metacercaria of this
species is also described. These cercariae are part of a diverse
community of at least six digenean species parasitising the snail Z.
subcarinatus that, together, have a major impact on the ecology and
evolution of this snail.
Keywords Cercariae; Heterophyidae;
Microphallidae;
Philophthalmidae; Renicolidae; parasites; trematodes; Zeacumantus
subcarinatus
Z07030; Online publication date 22 February 2008 Received 29; June
2007; accepted 18 December 2007
New Zealand Journal of Zoology, 2008, Vol. 35: 73–84
0301–4223/08/3501–0073 © The Royal Society of New Zealand 2008
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