CEPAVE   05420
CENTRO DE ESTUDIOS PARASITOLOGICOS Y DE VECTORES
Unidad Ejecutora - UE
artículos
Título:
A new species of Litomosoides Chandler, 1931 (Nematoda: Filarioidea) from the long-nosed hocicudo Oxymycterus nasutus Waterhouse (Rodentia: Cricetidae) in Uruguay.
Autor/es:
NOTARNICOLA J; NAVONE G T
Revista:
SYSTEMATIC PARASITOLOGY
Editorial:
SPRINGER
Referencias:
Año: 2009 vol. 73 p. 87 - 94
ISSN:
0165-5752
Resumen:
A new species of Litomosoides Chandler,
1931 was collected from the abdominal cavity of
Oxymycterus nasutus Waterhouse (Rodentia: Cricetidae)
in the grassland of the Departamento Rocha,
Uruguay. Litomosoides nasuti n. sp. belongs to the
sigmodontis group, and is characterised by: salient
amphids; two ventral and one dorsal labial papillae,
but no cephalic papillae; a buccal capsule with a
transparent anterior segment and an annular asymmetrical
thickening; a muscular oesophagus; a bottleshaped
buccal cavity; the male with symmetrically
situated cloacal papillae (one pair ad-cloacal and
three pairs post-cloacal); phasmids displaced laterally
to the longitudinal axis; and microfilariae without
terminal nuclei in the tail tip. It resembles five known
species; three of which have been recovered from
Oxymycterus spp. in neighbouring countries. However,
the new species can be differentiated from L.
sigmodontis Chandler, 1931 by the shape and size of
the buccal capsule; from L. navonae Notarnicola,
2005 by the muscular oesophagus; from L. legerae
Bain, Petit & Berteaux, 1980 by the length of the
oesophagus and the cephalic papillae; from L.
anguyai Notarnicola, Bain & Navone, 2002 by the
absence of lappets in the female tail; and from L.oxymycteri Notarnicola, Bain & Navone, 2000 by
absence of pre-cloacal papillae. L. legerae from O.
quaestor and L. sigmodontis from Sigmodon hispidus
in North America are closely related species, as
indicated by Brant & Gardners phylogenetic tree
based on morphological characters. However, a new
analysis is needed to include the recently described
Argentinean species for a better understanding of the
diversification of this genus.