Blood flukes (Digenea: Aporocotylidae) of walking catfishes (Siluriformes: Clariidae): new genus and species from the Mekong River (Vietnam) with comments on related catfish aporocotylids

Truong, Triet N.; Bullard, Stephen A.

doi:10.14411/fp.2013.027

Cited by 18 publications

(18 citation statements)

References 14 publications

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“…Transversotrema patialense was found in cultured grouper in marine and brackish water in the North and Centre ( Vo et al, 2011 ; Truong et al, 2017 ). Moreover, the blood fluke Psettarium anthicum was found in the heart of sea caged cobia ( Rachycentron canadum ) in the Centre ( Warren et al, 2017 ) while Nomasanguinicola canthoensis was identified in branchial vessels of wild-caught catfish ( Clarias macrocephalus ) sold on a fish market in Can Tho province (South) ( Truong and Bullard, 2013 ).…”

Section: Resultsmentioning

confidence: 99%

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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Section: Resultsmentioning

confidence: 99%

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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“…data), we observed minute (< 5 μm in total length), putative spines on the surface of the oral sucker. Although spinous anterior suckers are well-documented among fish blood flukes (Aporocotylidae) (Bullard et al 2008, McVay et al 2011, Bullard 2012, 2013, Truong and Bullard 2013, this is the first report of spines associated with the oral sucker of a TBF. Although materials at our disposal herein precluded an ultrastructural study of these minute spines, a follow-up study treating them is planned once additional specimens have been collected and prepared.…”

Section: Spirorchismentioning

confidence: 86%

A new species of Spirorchis MacCallum, 1918 (Digenea: Schistosomatoidea) and Spirorchis cf. scripta from chicken turtle, Deirochelys reticularia (Emydidae), with an emendation and molecular phylogeny of Spirorchis

et al. 2016

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The new species is most easily differentiated from its congeners by the combination of having caeca that extend far beyond the genitalia, intercaecal genitalia positioned in the middle portion of the body, a testicular column that nearly abuts the caecal bifurcation, a cirrus sac positioned between the testes and ovary, a massive Mehlis' gland, an elongate, longitudinal metraterm that extends anteriad beyond the level of the ovary, a pre-ovarian genital pore, and a prominent, intercaecal Manter's organ. The specimens of S. cf. scripta differed from the holotype and published descriptions of Spirorchis scripta Stunkard, 1923 by several subtle morphological features, perhaps comprising intraspecific variation, but collectively warranted a detailed description herein. Based on examinations of the aforementioned specimens plus the holotype, paratypes and vouchers of morphologically-similar congeners, Spirorchis MacCallum, 1918 is emended to include the presence of oral sucker spines, a pharynx, lateral oesophageal diverticula ('plicate organ') and a median oesophageal diverticulum ('oeseophageal pouch'). Phylogenetic analysis of the nuclear large subunit rDNA (28S) recovered S. collinsi sister to Spirorchis picta Stunkard, 1923, > 99% similarity between S. cf. scripta and S. scripta, and a monophyletic Spirorchis MacCallum, 1918. No blood fluke infection has been reported previously from these drainages, Alabama, or this turtle species. This is the first new species of Spirorchis to be described from North America in 26 years. Keywords: taxonomy, Spirorchiidae, Spirhapalum, 28S phylogeny, BaracktremaTwenty two species of turtle blood flukes (TBF) ranging in North America are assigned to Spirorchis MacCallum, 1918, Hapalorhynchus Stunkard, 1922, Unicaecum Stunkard, 1925 and Vasotrema Stunkard, 1928. Collectively, they infect 16 species of freshwater turtles: four infect snapping turtles (Chelydridae), ten infect pond turtles (Emydidae), three infect mud/musk turtles (Kinosternidae) and five infect softshell turtles (Trionychidae) (see Platt 1993, 2002, Smith 1997a,b, Orélis-Ribeiro et al. 2014. One third (29 of 86; 34%) of the freshwater turtle species in North America range in rivers and lakes of Alabama (van Dijk et al. 2014, Guyer et al. 2015 and three of the 13 (23%) species of planorbid snails that range in Alabama (Johnson et al. 2013) are known to shed cercariae of Spirorchis spp. elsewhere (Wall 1939, 1940, 1941a,b, Pieper 1953, Goodchild and Kirk 1960, Holliman and Fisher 1968, Holliman et al. 1971). Yet, no TBF infection has been reported from a turtle or snail in Alabama and few (11 of 29; 38%) turtles that occur there are known as TBF hosts elsewhere (Smith 1997a,b).Parasitological examinations of two chicken turtles, Deirochelys reticularia (Latreille in Sonnini et Latreille) from Alabama rivers revealed infections by a new species of Spirorchis and Spirorchis cf. scripta. Herein, we describe these specimens and compare them to type materials of Spirorchis innominatus Ward, 1921 (type species), Spirorc...

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“…Acipensericola differs from Plehniella by having a bowl-shaped anterior sucker, robust peg-like lateral tegumental spines, a column of testes, and a Laurer's canal; among other diagnostic features (Bullard et al 2008). Nomasanguinicola differs from Plehniella most notably by the presence of an anterior sucker with denticles directing posteroventrally, forming a column per each side of mouth (Truong and Bullard 2013).…”

Section: Plehniellamentioning

confidence: 99%

“…Plehniella platyrhynchi, the other aporocotylid that has 6 caeca and infects the body cavity of a pimelodid catfish in South America (i.e. Hemisorubim platyrhynchos), which was provisionally reassigned to Plehniella from Sanguinicola by Truong and Bullard (2013), appears to have adjacent but separate genital pores, among other diagnostic features, and its taxonomic status will be treated in greater detail elsewhere.…”

Section: Plehniellamentioning

confidence: 99%

“…Pimelodidae includes 109 accepted species assigned to approximately 30 genera (Lundberg et al 2010, Eschmeyer andFong 2015) that range primarily in South America but also north to the central Panamanian Isthmus and into Mexico (Nelson 2006). Among catfishes as hosts, Pimelodidae has the highest number of records for aporocotylid infections (Truong and Bullard 2013) (Table 1), and it seems likely that additional species of Aporocotylidae remain unnamed in pimelodids ranging in South America. Nearly all of the known blood flukes that infect freshwater fishes mature in blood but those infecting pimelodids mature in body cavity (Szidat 1951, Truong and).…”

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Blood flukes (Digenea: Aporocotylidae) infecting body cavity of South American catfishes (Siluriformes: Pimelodidae): two new species from rivers in Bolivia, Guyana and Peru with a re-assessment of Plehniella Szidat, 1951

Orélis-Ribeiro

Bullard

2015

Folia Parasitologica

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Plehniella Szidat, 1951 is emended based on new collections from South American long-whiskered catfishes. It is clearly differentiated from Sanguinicola Plehn, 1905 by lacking lateral tegumental body spines and by having 6 asymmetrical caeca. Plehniella sabajperezi sp. n. infects body cavity of Pimelodus albofasciatus (Mees) from the Demerara and Rupununi Rivers (Guyana) and Pimelodus blochii (Valenciennes) from Lake Tumi Chucua (Bolivia) and Napo River (Peru). It differs from Plehniella coelomicola Szidat, 1951 (type species) by having a thin-walled vas deferens that greatly exceeds the length of cirrus-sac and that joins the cirrus-sac at level of ovovitelline duct and ootype, an internal seminal vesicle that is absent or diminutive, and a cirrus-sac that is spheroid, nearly marginal, and envelops the laterally-directed distal portion of the male genitalia. Plehniella armbrusteri sp. n. infects body cavity of P. blochii from Lake Tumi Chucua (Bolivia). It differs from P. coelomicola and P. sabajperezi by having a relatively ovoid body, a massive intestine comprising caeca that are deeply-lobed to diverticulate and terminate in the posterior half of the body, a testis that flanks the distal tips of the posteriorly-directed caeca, and a proximal portion of the vas deferens that loops ventral to the testis. Small adults (Plehniella sp.) collected from body cavity of Pimelodus grosskopfii (Steindachner) from Cienega de Jobo and Canal del Dique (Colombia) differ from congeners by having a posteriorly-constricted body region, an anterior sucker with concentric rows of minute spines, an elongate anterior oesophageal swelling, short and wide caeca, and a male genital pore that opens proportionally more anteriad. This study nearly doubles the number of aporocotylids documented from South America Rivers and comprises the first record of a fish blood fluke from P. blochii, P. albofasciatus and P. grosskopfii as well as from Bolivia, Colombia, Guyana or Peru.

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Blood flukes (Digenea: Aporocotylidae) of walking catfishes (Siluriformes: Clariidae): new genus and species from the Mekong River (Vietnam) with comments on related catfish aporocotylids

Cited by 18 publications

References 14 publications

Helminth infections in fish in Vietnam: A systematic review

Helminth infections in fish in Vietnam: A systematic review

A new species of Spirorchis MacCallum, 1918 (Digenea: Schistosomatoidea) and Spirorchis cf. scripta from chicken turtle, Deirochelys reticularia (Emydidae), with an emendation and molecular phylogeny of Spirorchis

Blood flukes (Digenea: Aporocotylidae) infecting body cavity of South American catfishes (Siluriformes: Pimelodidae): two new species from rivers in Bolivia, Guyana and Peru with a re-assessment of Plehniella Szidat, 1951

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