Gonad-infecting species of Philometra (Nematoda: Philometridae) from groupers Epinephelus spp. (Osteichthyes: Serranidae) in the Bay of Bengal, India

Moravec, František; Manoharan, J

doi:10.2478/s11686-014-0285-4

Cited by 20 publications

(9 citation statements)

References 16 publications

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“…and their oesophageal bulb is usually less developed). However, in view of the absence of males and the high degree of host specificity in gonad-infecting species of Philometra when different species are found in congeneric fish hosts in the same locality [ 10 , 25 , 26 ], we refrain from establishing a new species for these nematodes until conspecific males are available.…”

Section: Philometra Sp ( Fig 4 )mentioning

confidence: 99%

Two gonad-infecting species ofPhilometra(Nematoda: Philometridae) from marine fishes off the northern coast of Australia

Moravec

Barton²

2015

Parasite

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Two different gonad-infecting species of Philometra Costa, 1845 were collected from the ovary of marine perciform fishes, the blackspotted croaker Protonibea diacanthus (Sciaenidae) and the John’s snapper Lutjanus johnii (Lutjanidae), from off the northern coast of Australia. Nematodes (males and females) from P. diacanthus represent a new taxon, Philometra protonibeae n. sp., which is mainly characterized by the body length of the males (3.37–3. 90 mm), broad, equally long spicules (length 126–141 μm) and the shape and structure of the gubernaculum with a dorsally lamellate distal tip. The nematodes (only females) from L. johnii may represent an undescribed species, but, because of the absence of conspecific males, they could not be specifically identified. Philometra protonibeae is the fifth nominal gonad-infecting species of this genus recorded from marine fishes in Australian waters and the seventh species of these parasites described from fishes of the family Sciaenidae.

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Section: Philometra Sp ( Fig 4 )mentioning

confidence: 99%

Two gonad-infecting species ofPhilometra(Nematoda: Philometridae) from marine fishes off the northern coast of Australia

Moravec

Barton²

2015

Parasite

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“…Gonad-infecting species of Philometra are known to exhibit a high degree of host specificity [20, 21, 23, 26, 27]. Therefore, Ph.…”

Section: Resultsmentioning

confidence: 99%

Species ofPhilometra(Nematoda, Philometridae) from fishes off the Mediterranean coast of Africa, with a description ofPhilometra raran. sp. fromHyporthodus haifensisand a molecular analysis ofPhilometra saltatrixfromPomatomus saltatrix

et al. 2017

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Two gonad-infecting species of Philometra Costa, 1845 (Nematoda, Philometridae) were recorded for the first time from marine perciform fishes off Tunisia and Libya: Philometra rara n. sp. from the rare, deep-water Haifa grouper Hyporthodus haifensis (Serranidae) off Libya and Philometra saltatrix Ramachandran, 1973 from the bluefish Pomatomus saltatrix (Pomatomidae) off Tunisia. Identification of both fish species was confirmed by molecular barcoding. Light and scanning electron microscope studies of Ph. rara n. sp. showed that it is characterized by the length of spicules (216–219 μm) and the gubernaculum (90–93 μm), the gubernaculum/spicules length ratio (1:2.32–2.43), and mainly by the shape and structure of the distal end of the gubernaculum (shovel-shaped with a wide median smooth field in dorsal view), appearing as having a dorsal protuberance in lateral view, and by the structure of the male caudal mound (dorsally interrupted); large subgravid females (70–137 mm long) are characterized by the presence of four oval submedian cephalic elevations, each of them bearing a pair of cephalic papillae of the outer circle. The finding of Ph. saltatrix off Tunisia confirms that this species is widespread throughout the Mediterranean region. A molecular analysis of our Ph. saltatrix specimens and other available philometrid cytochrome c oxidase 1 (COI) sequences showed that most species have robust clades. Sequences of Ph. saltatrix from Tunisia diverge from Ph. saltatrix from Brazil and the USA, suggesting that speciation is currently occurring between populations from both sides of the Atlantic Ocean.

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“…Wild Serranidae are also susceptible to a very important viral disease, viral nervous necrosis (VNN) caused by Betanodavirus (Vendramin et al, 2013;Kara et al, 2014). Regarding parasitic infections, Serranidae have been hosts of nematodes of the Family Philometridae (Baylis and Daubney, 1926) which exhibits large females (Moravec et al, 2003) causing serious damage to the ovaries affecting reproduction (Moravec and Justine, 2005;Moravec and Manoharan, 2014). The former authors have described the presence of large Philometra lateolabracis females in the gonads of Epinephelus marginatus and Seriola dumerilii in the Mediterranean.…”

Section: Introductionmentioning

confidence: 99%

Contribution to the parasites and associated pathology of wild Serranidae from the Aegean Sea

Bakopoulos

Nikolaidis

Kolygas

et al. 2018

J Hellenic Vet Med Soc

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Parasites and associated pathology of wild caught Serranidae in the Aegean Sea were investigated in order to contribute to the scientific information regarding pathological findings of these fish. Various lesions and parasitic organisms, such as Digenean parasites, cysts and metacercaria, Cestode cysts and a nematode, were observed in the gills / pseudobranchs, liver, the wall of the digestive tract, the mesentery and the ovaries. None of these lesions were considered to be of pathogenic bacteria nature based on microscopic observation of stained tissue sections of affected organs. The most frequently observed parasitism among all the species studied was from Digenean parasites (11 out of 16 specimens examined) compared to infection by both cestodes and nematodes (3 out of 16 specimens examined). Heavier infestation was observed for the unidentified Digenean cysts that were found in the mesentery of one specimen (120 counts), followed by Didymozoan parasites (average 19.25 counts per specimen).

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Gonad-infecting species of Philometra (Nematoda: Philometridae) from groupers Epinephelus spp. (Osteichthyes: Serranidae) in the Bay of Bengal, India

Cited by 20 publications

References 16 publications

Two gonad-infecting species ofPhilometra(Nematoda: Philometridae) from marine fishes off the northern coast of Australia

Two gonad-infecting species ofPhilometra(Nematoda: Philometridae) from marine fishes off the northern coast of Australia

Species ofPhilometra(Nematoda, Philometridae) from fishes off the Mediterranean coast of Africa, with a description ofPhilometra raran. sp. fromHyporthodus haifensisand a molecular analysis ofPhilometra saltatrixfromPomatomus saltatrix

Contribution to the parasites and associated pathology of wild Serranidae from the Aegean Sea

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