Monogeneans from Pangasiidae (Siluriformes) in Southeast Asia: VIII. Four new species ofThaparocleidusJain, 1952 (Ancylodiscoididae) fromPangasius polyuranodonandP. elongatus

Pariselle, Antoine; Lim, L. H. S.; Lambert, Alain

doi:10.1051/parasite/2005121023

Cited by 3 publications

(2 citation statements)

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“…14. Fenestration in anchors is not limited to these Ligophorus species or to any particular group of monogeneans and can be found in species from different genera, such as in most Thaparocleidus species from pangassids (single fenestrum in ventral anchors) (see Pariselle et al , 2001a, b, 2002, 2003, 2004, 2005a, b, 2006) and in Haliotrema banana Lim & Justine, 2007 (single fenestrum in dorsal and ventral anchors) (see Lim & Justine, 2007). The occurrences of fenestrated anchors in a few species of unrelated genera seem to suggest that fenestration in anchors is of specific importance rather than generic importance in monogeneans.…”

Section: Discussionmentioning

confidence: 99%

A description of two new species of Ligophorus Euzet & Suriano, (Monogenea: Ancyrocephalidae) from Malaysian mugilid fish using principal component analysis and numerical taxonomy

Soo

Lim

2013

J. Helminthol.

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Ligophorus belanaki n. sp. and Ligophorus kederai n. sp. are described from Liza subviridis Valenciennes, 1836 and Valamugil buchanani Bleeker, 1854, respectively. Ligophorus kederai n. sp. has fenestrated ventral anchors, while in L. belanaki n. sp. the ventral anchor is not fenestrated. Ligophorus belanaki n. sp. is similar to L. careyensis, one of its coexisting congeners, in the overall shape and size of hard parts, but differs in having a flat median piece in the structure of the AMP (antero-median protuberance of the ventral bar), copulatory organ with non-ornamented initial part and longer vaginal tube, compared to raised median piece in the AMP, ornamented initial part and comparatively shorter vaginal tube in L. careyensis. Ligophorus kederai n. sp. is similar to L. fenestrum, a coexisting congener, in having fenestrated ventral anchors, but differs in having longer points and narrower base. Ligophorus fenestrum, unlike L. kederai n. sp., also possesses fenestrated dorsal anchors. The principal component analysis (PCA) scatterplots indicate that the two new and eight known Ligophorus species from Malaysian mugilids can be differentiated based on the morphometries of their anchors, ventral bars and copulatory organ separately and when combined together. Numerical taxonomy (NT) analyses based on Jaccard's Index of Similarity and neighbour-joining clustering, is used to facilitate comparison of these two new species with the 50 known Ligophorus based on morphological and metric characters. The two new species are different from each other and the other 50 species in the overall shapes and sizes of hard parts, as indicated by the NT analyses.

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Section: Discussionmentioning

confidence: 99%

A description of two new species of Ligophorus Euzet & Suriano, (Monogenea: Ancyrocephalidae) from Malaysian mugilid fish using principal component analysis and numerical taxonomy

Soo

Lim

2013

J. Helminthol.

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“…After dissection, their left gill arches were preserved in 70% ethanol. Species identification was based on the morphology of sclerotized parts of the attachment and reproductive organs following Lim [32] and Pariselle et al [28, 33–36]. All Thaparocleidus species collected for this study were found on a single host species except for T. caecus , which was collected from Pangasius nasutus and Pangasianodon hypophthalmus (this host species has been introduced over the entire region of Southeast Asia for aquaculture purposes).…”

Section: Methodsmentioning

confidence: 99%

Speciation inThaparocleidus(Monogenea: Dactylogyridae) Parasitizing Asian Pangasiid Catfishes

Šimková

Serbielle

Pariselle

et al. 2013

BioMed Research International

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The phylogeny of monogeneans of the genus Thaparocleidus that parasitize the gills of Pangasiidae in Borneo and Sumatra was inferred from molecular data to investigate parasite speciation. The phylogeny of the Pangasiidae was also reconstructed in order to investigate host-parasite coevolutionary history. The monophyly of Thaparocleidus parasitizing Pangasiidae was confirmed. Low intraspecies molecular variability was observed in three Thaparocleidus species collected from geographically distant localities. However, a high intraspecies molecular variability was observed in two Thaparocleidus species suggesting that these species represent a complex of species highly similar in morphology. Distance-based and tree-based methods revealed a significant global fit between parasite and host phylogenies. Parasite duplication (i.e., intrahost speciation) was recognized as the most common event in Thaparocleidus, while the numbers of cospeciation and host switches were lower and similar to each other. When collapsing nodes correspond to duplication cases, our results suggest host switches in the Thaparocleidus-Pangasiidae system precluding congruence between host and parasite trees. We found that the morphometric variability of the parasite attachment organ is not linked to phylogeny, suggesting that the attachment organ is under adaptive constraint. We showed that haptor morphometry is linked to host specificity, whereby nonspecific parasites display higher morphometric variability than specialists.

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Helminth infections in fish in Vietnam: A systematic review

Nguyen¹,

Dorny

Nguyen

et al. 2021

International Journal for Parasitology: Parasites and Wildlife

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In Vietnam, fisheries play a key role in the national economy. Helminth infections in fish have a major impact on public health and sustainable fish production. A comprehensive summary of the recent knowledge on fish helminths is important to understand the distribution of parasites in the country, and to design effective control measures. Therefore, a systematic review was conducted, collecting available literature published between January 2004 and October 2020. A total of 108 eligible records were retrieved reporting 268 helminth species, among which are digeneans, monogeneans, cestodes, nematodes and acanthocephalans. Some helminths were identified with zoonotic potential, such as, the heterophyids, opisthorchiids, the nematodes Gnathostoma spinigerum , Anisakis sp. and Capillaria spp. and the cestode Hysterothylacium ; and with highly pathogenic potential, such as, the monogeneans of Capsalidae, Diplectanidae and Gyrodactylidae, the nematodes Philometra and Camallanidae, the tapeworm Schyzocotyle acheilognathi, the acanthocephalans Neoechinorhynchus and Acanthocephalus. Overall, these studies only covered about nine percent of the more than 2400 fish species occurring in the waters of Vietnam. Considering the expansion of the aquaculture sector as a part of the national economic development strategy, it is important to expand the research to cover the helminth fauna of all fish species, to assess their potential zoonotic and fish health impacts.

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Monogeneans from Pangasiidae (Siluriformes) in Southeast Asia: VIII. Four new species ofThaparocleidusJain, 1952 (Ancylodiscoididae) fromPangasius polyuranodonandP. elongatus

Cited by 3 publications

References 8 publications

A description of two new species of Ligophorus Euzet & Suriano, (Monogenea: Ancyrocephalidae) from Malaysian mugilid fish using principal component analysis and numerical taxonomy

A description of two new species of Ligophorus Euzet & Suriano, (Monogenea: Ancyrocephalidae) from Malaysian mugilid fish using principal component analysis and numerical taxonomy

Speciation inThaparocleidus(Monogenea: Dactylogyridae) Parasitizing Asian Pangasiid Catfishes

Helminth infections in fish in Vietnam: A systematic review

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