Supplemental description of Stephanoprora ornata Odhner, 1902 (Digenea: Echinochasmidae) infecting the Nile crocodile, Crocodylus niloticus (Crocodylidae) from Namibia with emendation of Mesorchis Dietz, 1909 and a phylogenetic analysis
Journal of Helminthology,
Journal Year:
2025,
Volume and Issue:
99
Published: Jan. 1, 2025
Abstract
The
synonymies
of
the
echinochasmid
genera
Mesorchis
Dietz,
1909
and
Monilifer
with
Stephanoprora
Odhner,
1902
remain
contentious
unresolved
morphology.
To
explore
matter,
we
herein
provide
a
supplemental
description
type
species
,
ornata
1902,
based
on
specimens
collected
from
intestine
Nile
crocodile
Crocodylus
niloticus
Laurenti,
1768
(Crocodylia:
Crocodylidae)
captured
in
Kavango
River,
Namibia.
No
nucleotide
information
was
available
previously
for
S.
ornata.
Morphology
plus
28S
ITS2
phylogenetic
analyses
suggested
is
monotypic
genus
that
can
be
differentiated
other
by
having
26
collar
spines.
differs
number
distribution
spines
(26
[2
dorsal
spines,
12
lateral
corner
spines]
vs.
22
8
),
length
pre-pharyngeal
oesophagus,
pharynx
position
posterior
to
(vs.
oesophagus
short,
anterior
or
at
level
spines),
testes
shape
(elongate-ovoid,
irregular
outline
ovoid,
atypically
elongated).
Our
phylogenies
recovered
new
sequence
(having
spines)
sister
all
remaining
sequences,
representing
have
20–24
Echinochasmus
were
as
paraphyletic.
We
retain
junior
subjective
synonym
suite
morphological
features
related
body
genitalia
because
designated
reassigned
Echinochasmus.
accept
25
Mesorchis.
Language: Английский
Acanthostomum yahuarcaquense n. sp. (Digenea: Cryptogonimidae) infecting the intestine of an aquatic coral snake, Micrurus surinamensis (Cuvier, 1817) (Serpentes: Elapidae) from the flooded rainforest habitat of the Yahuarcaca Lakes System (Amazon River, Colombia) and phylogenetic analysis of Cryptogonimidae
International Journal for Parasitology Parasites and Wildlife,
Journal Year:
2025,
Volume and Issue:
26, P. 101055 - 101055
Published: March 10, 2025
We
herein
describe
Acanthostomum
yahuarcaquense
Cajiao-Mora
and
Bullard
n.
sp.
(Digenea:
Cryptogonimidae)
based
on
specimens
we
collected
from
the
intestine
of
an
aquatic
coral
snake,
Micrurus
surinamensis
(Cuvier,
1817)
(Serpentes:
Elapidae)
captured
within
flooded
rainforest
habitat
Yahuarcaca
Lake
System
(Amazon
River)
Leticia,
Amazonas,
Colombia.
assign
new
species
to
Looss,
1899because
it
lacks
a
gonotyl
has
elongate
body,
spinose
tegument,
funnel-shaped
oral
sucker
with
circumoral
spines,
ceca
each
having
posterolateral
nearly
terminal
pore,
excretory
vesicle
arms
reaching
anteriad
pharynx.
The
differs
its
19
accepted
congeners
by
24-30
spines
(vs.
fewer
than
20
or
aspinose),
vitellarium
extending
anterior
margin
ovary
posterior
half
body
testis
but
ending
in
body),
paired
elongate,
symmetrical
anal
pore
asymmetrical
ceca,
single
cecum,
lacking
pores).
Our
28S
phylogenetic
analysis
recovered
paraphyletic
(including
Neocladocystis
spp.
Tanganyikatrema
fusiforme
Kmentová,
Georgieva,
Bray,
2020;
both
clade
sister
other
cryptogonimids.
discuss
implications
using
nonugens
excessively
short
nucleotide
sequences
compare
test
relationships.
Regarding
advancing
systematics
family,
shape
position,
spine
distribution,
tegumental
symmetry,
presence/absence
position
as
useful
genus-level
features.
Many
these
features
remain
indeterminate
for
several
species.
This
is
first
published
study
parasite
infecting
tetrapod
System,
record
snake
(Micrurus
spp.)
Colombia,
only
second
trematode
reported
snake.
Language: Английский
Alobophora sandrae n. gen. n. sp. (Digenea: Caballerotrematidae) infecting Arapaima gigas sensu lato (Osteoglossiformes: Arapaimidae) with a revision of Caballerotrema, key to Caballerotrematidae, and updated phylogeny
Parasite,
Journal Year:
2024,
Volume and Issue:
31, P. 55 - 55
Published: Jan. 1, 2024
We
propose
and
describe
Alobophora
sandrae
Cajiao-Mora
&
Bullard
n.
gen.,
sp.
(Digenea:
Caballerotrematidae)
for
specimens
we
collected
from
arapaima,
Arapaima
gigas
sensu
lato
(Osteoglossiformes:
Arapaimidae)
in
the
Amazon
River
near
Leticia,
Colombia.
differs
Caballerotrema
Prudhoe,
1960
by
lacking
head
collar
projections
having
clustered
corner
spines
a
narrow
(4-5×
wider
than
pharynx),
whereas
has
projections,
lacks
spines,
broad
(7-8×
pharynx).
reassign
annulatum
(Diesing,
1850)
Ostrowski
de
Núñez
Sattmann,
2002
to
new
genus,
as
annulata
comb.,
provide
supplemental
description
of
brasiliense
based
on
arapaima.
also
examined
holotype
paratype
piscicola
(Stunkard,
1960)
Kostadinova
Gibson,
2001
concluded
that
C.
is
junior
subjective
synonym
brasiliense.
Our
28S
phylogeny
recovered
A.
sister
annulata,
with
clade
comprising
an
innominate
species
Caballerotrema.
Caballerotrematidae
was
Echinostomatidae.
dichotomous
key
caballerotrematids
spine
arrangement,
proportional
pharynx
breadth,
testes
shape
body
surface
distribution,
vitellarium
abundance
prostatic
cells.
Language: Английский