TY - JOUR
T1 - Redescription of Ascarophis distorta Fusco et Overstreet, 1978 (Nematoda, Cystidicolidae) from the stomach of some butterflyfishes off New Caledonia
AU - Moravec, František
AU - Shamsi, Shokoofeh
AU - Justine, Jean Lou
N1 - Publisher Copyright:
© 2021, Witold Stefański Institute of Parasitology, Polish Academy of Sciences.
Includes bibliographical references
PY - 2021/9
Y1 - 2021/9
N2 - PurposeThe nematode Ascarophis distorta Fusco et Overstreet, 1978 (Cystidicolidae), originally described from the butterflyfish Chaetodon paucifasciatus
Ahl (Perciformes, Chaetodontidae) in the Red Sea, was established based
solely on the light microscopical (LM) examination of specimens.
However, the present taxonomy of cystidicolid nematodes is mostly based
on details of the cephalic structures properly visible only with the use
of scanning electron microscopy (SEM).MethodsHelminthological
examinations of some marine fishes from coral reefs off New Caledonia,
South Pacific, carried out in the years 2003–2007, revealed the presence
of A. distorta in two Chaetodon spp. and thus enabled its redescription. The nematode specimens were studied with the use of both LM and SEM.ResultsThe specimens of A. distorta were obtained from the stomach of the threadfin butterflyfish Chaetodon auriga Forsskål and the vagabond butterflyfish Chaetodon vagabundus
Linnaeus. This is just the second record of this parasite since its
description 43 years ago. SEM, used in this species for the first time,
revealed some taxonomically important, previously unreported or
insufficiently described morphological features, such as details in the
cephalic structure, the shape of deirids, structure of the distal tip of
the left spicule, or the exact number and distribution of male caudal
papillae. The finding of A. distorta in C. auriga and C. vagabundus
off New Caledonia represents new host and geographical records. The
examination of 39 specimens of butterflyfishes from off New Caledonia,
belonging to 14 Chaetodon spp. and 3 Heniochus spp., revealed that the nematode was only present in the 2 fish species listed above.ConclusionsThis parasite seems to be host-specific to only certain species of butterflyfishes (Chaetodon spp.), and is probably widespread in the Indo-Pacific region, as well as its hosts.
AB - PurposeThe nematode Ascarophis distorta Fusco et Overstreet, 1978 (Cystidicolidae), originally described from the butterflyfish Chaetodon paucifasciatus
Ahl (Perciformes, Chaetodontidae) in the Red Sea, was established based
solely on the light microscopical (LM) examination of specimens.
However, the present taxonomy of cystidicolid nematodes is mostly based
on details of the cephalic structures properly visible only with the use
of scanning electron microscopy (SEM).MethodsHelminthological
examinations of some marine fishes from coral reefs off New Caledonia,
South Pacific, carried out in the years 2003–2007, revealed the presence
of A. distorta in two Chaetodon spp. and thus enabled its redescription. The nematode specimens were studied with the use of both LM and SEM.ResultsThe specimens of A. distorta were obtained from the stomach of the threadfin butterflyfish Chaetodon auriga Forsskål and the vagabond butterflyfish Chaetodon vagabundus
Linnaeus. This is just the second record of this parasite since its
description 43 years ago. SEM, used in this species for the first time,
revealed some taxonomically important, previously unreported or
insufficiently described morphological features, such as details in the
cephalic structure, the shape of deirids, structure of the distal tip of
the left spicule, or the exact number and distribution of male caudal
papillae. The finding of A. distorta in C. auriga and C. vagabundus
off New Caledonia represents new host and geographical records. The
examination of 39 specimens of butterflyfishes from off New Caledonia,
belonging to 14 Chaetodon spp. and 3 Heniochus spp., revealed that the nematode was only present in the 2 fish species listed above.ConclusionsThis parasite seems to be host-specific to only certain species of butterflyfishes (Chaetodon spp.), and is probably widespread in the Indo-Pacific region, as well as its hosts.
KW - Chaetodontidae
KW - Marine fish
KW - Morphology
KW - Parasitic nematode
KW - South Pacific Ocean
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U2 - 10.1007/s11686-021-00359-7
DO - 10.1007/s11686-021-00359-7
M3 - Article
C2 - 33687644
AN - SCOPUS:85102374540
SN - 1230-2821
VL - 66
SP - 907
EP - 914
JO - Acta Parasitologica
JF - Acta Parasitologica
IS - 3
ER -