Calodium hepaticum (Nematoda: Capillariidae) in wild rodent populations from Argentina
Calodium hepaticum (Nematoda; Capillariidae) is a parasitic nematode of mammals with a cosmopolitan distribution. Adults of this nematode can infect the liver of many mammalian species, including humans, but the main hosts are members of the superfamily Muroidea. Among these, Rattus spp. have the hi...
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Published in | Parasitology research (1987) Vol. 117; no. 9; pp. 2921 - 2926 |
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Main Authors | , , , , , |
Format | Journal Article |
Language | English |
Published |
Berlin/Heidelberg
Springer Berlin Heidelberg
01.09.2018
Springer Springer Nature B.V |
Subjects | |
Online Access | Get full text |
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Summary: | Calodium hepaticum
(Nematoda; Capillariidae) is a parasitic nematode of mammals with a cosmopolitan distribution. Adults of this nematode can infect the liver of many mammalian species, including humans, but the main hosts are members of the superfamily Muroidea. Among these,
Rattus
spp. have the highest apparent prevalences reported worldwide. There are only two reports of
C
.
hepaticum
infecting Sigmodontinae species (Muroidea: Cricetidae). In this survey, we examined the occurrence of
C
.
hepaticum
in two assemblages of Sigmodontinae rodents from Argentina (Santa Fe and Entre Ríos provinces). The diagnosis was made by morphological features, histopathological exam, and molecular characterization of 18S ribosomal RNA gene region. Here, we show that
C
.
hepaticum
is a common parasite of Sigmodontinae. We report the infection in six species (all new hosts):
Akodon azarae
,
Calomys callidus
,
Calomys venustus
,
Oligoryzomys flavescens
,
Oligoryzomys nigripes
, and
Oxymycterus rufus
. This is the first report of
C
.
hepaticum
in Sigmodontinae rodents from Argentina and the second record in this subfamily for South America. It is also the first confirmation of
C
.
hepaticum
infection in Sigmodontinae by molecular diagnosis. The genetic findings and the prevalences observed, together with the existing information on
C
.
hepaticum
, lead us to propose that
Rattus
spp. brought
C
.
hepaticum
to the New World exposing Sigmodontinae rodents, which are frequently infected by this parasite. The high prevalence of infection in
A
.
azarae
(41.2%) suggests that this host may be playing an important role in
C
.
hepaticum
dynamics in the New World. |
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Bibliography: | ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 |
ISSN: | 0932-0113 1432-1955 |
DOI: | 10.1007/s00436-018-5983-7 |