Reappraisal of Goezeella Fuhrmann, 1916 (Cestoda: Proteocephalidae), parasites of Neotropical catfishes (Siluriformes), with description of a new species from Pimelodella cristata (Heptapteridae)
Author
Philippe V. Alves
Author
Alain de Chambrier
Author
José L. Luque
Author
Tomáš Scholz
text
Revue suisse de Zoologie
2017
2017-09-30
124
2
335
350
journal article
31804
10.5281/zenodo.893547
106613a0-b98c-4607-a9e9-5b22b351ff81
0035-418
893547
Goezeella danbrooksi
de
Chambrier, Rego &
Mariaux, 2004
Figs 20, 21
Goezeella siluri
. –
Brooks & Deardorff, 1980
: 15.
Holotype:
USNM 1370061 (USNPC 74498), a wholemounted specimen (2 slides) – USNM 1370107 (USNPC 74544), fragments on 19 slides of serial cross- and frontal sections.
Type and only known locality:
Magdalena River near San Cristóbal, Province of Bolívar, Colombia.
Type and only known host:
Ageneiosus pardalis
Lütken (=
A
.
caucanus
Steindachner
) (
Siluriformes
:
Auchenipteridae
).
Site of infection:
Anterior intestine.
Prevalence of infection:
Unknown.
Morphological
description:
Brooks
&
Deardorff
(1980).
Remarks:
The description of this species, which was originally identified as
G. siluri
by
Brooks & Deardorff (1980)
, was based on a single specimen, which is partially decomposed. However, de
Chambrier
et al
. (2004a)
observed several morphological differences between this specimen and
G
.
siluri
, such as the position of the vitelline follicles, which are ventrolateral in
G. danbrooksi
(vs. only ventral in
G. siluri
), fewer testes (183-310 vs. 380-430), and the position of the vaginal sphincter (at a distance from the genital atrium in
G
.
danbrooksi
vs. terminal, i.e. close to the genital atrium in
G
.
siluri
). Based on these differences, de
Chambrier
et al.
(2004a)
proposed the new name,
G. danbrooksi
, for the tapeworm from
A
.
pardalis
.
Brooks & Deardorff (1980)
reported the vitelline follicles to be present both in the ventral and dorsal cortex. However, the study of the holotype including its histological sections revealed that the follicles are only on the ventral side of the cortex, reaching only to its lateral margin (
Figs 20, 21
).
The study of the type material of
G. danbrooksi
also showed that some fibres of the inner longitudinal musculature are close together, thus somewhat resembling muscle bundles (
Figs 20, 21
). However, the tissue of histological sections is partially decomposed and thus a new, well fixed material of the species has to be examined to reveal the actual structure of the inner longitudinal muscles of
G. danbrooksi
.