Huffmanela plectropomi n. sp. (Nematoda: Trichosomoididae: Huffmanelinae) from the coralgrouper Plectropomus leopardus (Lacépède) off New Caledonia

Justine, Jean‐Lou

doi:10.1007/s11230-011-9296-9

Cited by 17 publications

(11 citation statements)

References 16 publications

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“…but have different dimensions. The eggs of H. mexicana (Moravec & Fajer-Avila, 2000), H. ossicola (Justine, 2007), H. filamentosa (Justine, 2004), H. longa (Justine, 2007) and H. plectropomi (Justine, 2011) have filamentous shells, while other species have spines, namely the previously mentioned H. banningi (Moravec & Campbell, 1991), H. huffmani (Huffman & Moravec, 1988) and H. lata (Ruiz & Bullard, 2013). Finally, the eggs of H. canadensis differ in size from the currently reported Huffmanela sp.…”

Section: Discussionmentioning

confidence: 99%

Huffmanela sp. (Nematoda: Trichosomoididae: Huffmanelinae) encountered in the whitecheek shark (Carcharhinus dussumieri) in the Arabian Gulf

Attia

Ibrahim²,

Mahmoud

et al. 2021

Helminthologia

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Summary Veterinary inspection of fish caught at the western side of the Arabian Gulf off the shore of Saudi Arabia in 2017 revealed abnormal irregular zigzag black lines in the skins of 135 out of 1500 (prevalence = 9 %) whitecheek sharks (Carcharhinus dussumieri). These lesions have been noticed in the dorsal and ventral part of the head near the snout and around the eyes, as well as in the skin of the pectoral fins. The parasitological, pathological and ultramorphological aspects of the sampled fish were studied using a light microscope, as well as scanning and transmission electron microscopes. Trichosomoidid-type eggs identified as Huffmanela sp. were found in the superficial layer of the skin. The mature eggs containing larvae (n = 75) were ellipsoidal or spindle-shaped, smooth-shelled, amber-brown to dark brown or even black in colour. The width of the eggs ranged from 34 to 49μm with lengths ranging from 95 to 107μm. The polar plugs of the immature eggs were slightly protruding, whereas mature eggs had clearly protruding polar plugs. The width of the polar plugs ranged from 4.5 – 9.5μm. The shells of the eggs were smooth and there was a thin layer seen near the polar areas. The infected skin exhibited desquamated epithelium, with inflammatory cell aggregations and melanophores in the debris. The underlying musculatures of the skin were free from any eggs, but showed mild pathological changes, including congestion of blood vessels, haemorrhages and oedema. The prevalence of infection showed seasonality, peaking significantly in the spring (18.18 %), with comparable prevalence rates in winter and summer (9.43 % and 8.57 %, respectively). However, infections dropped significantly during the autumn months (3.75 %). It is believed that this is the first study reporting the presence of Huffmanela sp. in whitecheek sharks at El-Jubail Province, Saudi Arabia, Arabian Gulf.

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Section: Discussionmentioning

confidence: 99%

Huffmanela sp. (Nematoda: Trichosomoididae: Huffmanelinae) encountered in the whitecheek shark (Carcharhinus dussumieri) in the Arabian Gulf

Attia

Ibrahim²,

Mahmoud

et al. 2021

Helminthologia

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“…The dark-shelled eggs of this parasite occur in masses within the internal layer of the swim bladder wall of the bull's eye puffer angle, Sphoeroides annulatus and are characterized basically by their shape, an aspinose surface, Little polar plugs, and their thick egg wall. Moreover, (Justine 2011) recorded Huffmanela plectropomi n. sp. as portrayed from eggs, which, only were found in dark spots within the mesentery of a coral grouper, Plectropomus leopardus.…”

Section: Discussionmentioning

confidence: 99%

“…as portrayed from eggs, which, only were found in dark spots within the mesentery of a coral grouper, Plectropomus leopardus. In expansion of these portrayed species, around half a dozen cases of Huffmanela sp., anonymous species have been documented in different fishes (Justine 2011). Based on the morphological and parasitological examinations, the isolated nematode eggs belonged to Superfamily: Trichinelloidea Hall, 1916, Family: Trichosomoididae Yorke and Maplestone, 1926, Genus: Huffmanela Moravec, 1987, Huffmanela sp.…”

Section: Discussionmentioning

confidence: 99%

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First record of the nematode, Huffmanela sp. infecting the broomtail wrasse (Cheilinus lunulatus) from Egypt

et al. 2020

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A total of 385 Red Sea coral reef fish representing three species; Broom tail wrasse (Cheilinus lunulatus), Blacktip grouper (Epinephelus fasciatus) and Rabbit fish (Siganus sp.). were examined for the presence of nematode Huffmanela species. The eggs of Huffmanela species were isolated and identified only from the C. lunulatus. The total prevalence of Huffmanela sp. infestation were 69.5%. The highest prevalence was observed in winter and the lowest in spring and summer. The prevalence was increased in correlation with fish body weight. Fully developed eggs of Huffmanela species were dark brown embryonated, elongated, with slightly protruding plugs. A high density of Huffmanela sp. eggs with different developmental stages packed the epithelial layer of the gas bladder. The surrounding tissue of gas bladder was hemorrhagic and sometimes necrotic associated with chronic inflammatory cell infiltration. This is the first record of Huffmanela species infestation in Broom tail wrasse C. lunulatus, Red Sea coral reef fishes.

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“…furcosus ; their prevalence is probably very low, and their initial discovery in a small sample should be attributed to chance. Similarly, no Huffmanela species was recorded from more than 500 serranids examined [7], but a new species was described later from a serranid [103]. Tissue-dwelling trichosomoidids are characterised by two opposing features which probably balance each other out - very low prevalences and extremely high numbers (millions) of eggs in the few individual fish infected.…”

Section: Discussionmentioning

confidence: 99%

An annotated list of fish parasites (Isopoda, Copepoda, Monogenea, Digenea, Cestoda, Nematoda) collected from Snappers and Bream (Lutjanidae, Nemipteridae, Caesionidae) in New Caledonia confirms high parasite biodiversity on coral reef fish

et al. 2012

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BackgroundCoral reefs are areas of maximum biodiversity, but the parasites of coral reef fishes, and especially their species richness, are not well known. Over an 8-year period, parasites were collected from 24 species of Lutjanidae, Nemipteridae and Caesionidae off New Caledonia, South Pacific.ResultsHost-parasite and parasite-host lists are provided, with a total of 207 host-parasite combinations and 58 parasite species identified at the species level, with 27 new host records. Results are presented for isopods, copepods, monogeneans, digeneans, cestodes and nematodes. When results are restricted to well-sampled reef fish species (sample size > 30), the number of host-parasite combinations is 20–25 per fish species, and the number of parasites identified at the species level is 9–13 per fish species. Lutjanids include reef-associated fish and deeper sea fish from the outer slopes of the coral reef: fish from both milieus were compared. Surprisingly, parasite biodiversity was higher in deeper sea fish than in reef fish (host-parasite combinations: 12.50 vs 10.13, number of species per fish 3.75 vs 3.00); however, we identified four biases which diminish the validity of this comparison. Finally, these results and previously published results allow us to propose a generalization of parasite biodiversity for four major families of reef-associated fishes (Lutjanidae, Nemipteridae, Serranidae and Lethrinidae): well-sampled fish have a mean of 20 host-parasite combinations per fish species, and the number of parasites identified at the species level is 10 per fish species.ConclusionsSince all precautions have been taken to minimize taxon numbers, it is safe to affirm than the number of fish parasites is at least ten times the number of fish species in coral reefs, for species of similar size or larger than the species in the four families studied; this is a major improvement to our estimate of biodiversity in coral reefs. Our results suggest that extinction of a coral reef fish species would eventually result in the coextinction of at least ten species of parasites.

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Huffmanela plectropomi n. sp. (Nematoda: Trichosomoididae: Huffmanelinae) from the coralgrouper Plectropomus leopardus (Lacépède) off New Caledonia

Cited by 17 publications

References 16 publications

Huffmanela sp. (Nematoda: Trichosomoididae: Huffmanelinae) encountered in the whitecheek shark (Carcharhinus dussumieri) in the Arabian Gulf

Huffmanela sp. (Nematoda: Trichosomoididae: Huffmanelinae) encountered in the whitecheek shark (Carcharhinus dussumieri) in the Arabian Gulf

First record of the nematode, Huffmanela sp. infecting the broomtail wrasse (Cheilinus lunulatus) from Egypt

An annotated list of fish parasites (Isopoda, Copepoda, Monogenea, Digenea, Cestoda, Nematoda) collected from Snappers and Bream (Lutjanidae, Nemipteridae, Caesionidae) in New Caledonia confirms high parasite biodiversity on coral reef fish

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