Contribution to the knowledge of Philometra lateolabracis Yamaguti, 1935 (Nematoda, Filarioidea)

Crisp, D. J.; Klein, Vera Lucia Mota

doi:10.1590/s0074-02761973000300009

Cited by 17 publications

(21 citation statements)

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“…parasitic in the gonads of marine fishes by Moravec and Genc 2004) and, therefore, they were first considered to belong to this species. However, in November 2005, also four males were found and their morphology proved to be very different from that of P. lateolabracis, as it was described by Crisp and Klein (1973), Merella et al (2004), Moravec and Genc (2004) and Moravec and Justine (2005).…”

Section: Figs 1mentioning

confidence: 75%

Two new species of Philometra (Nematoda: Philometridae) parasitic in the perciform fish Cynoscion nebulosus (Sciaenidae) in the estuaries of South Carolina, USA

Moravec¹,

Buron²,

Roumillat³

2006

FOLIA PARASIT

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Abstract.Two new nematode species of Philometra Costa, 1845, P. carolinensis sp. n. and P. cynoscionis sp. n., are described from the spotted seatrout, Cynoscion nebulosus (Cuvier) (Sciaenidae, Perciformes) in estuaries on the Atlantic coast of South Carolina, USA. Philometra carolinensis (males and gravid and subgravid females) parasitic in the host's ovary is most similar to P. lateolabracis (Yamaguti, 1935) in female morphology, but distinctly differs from it in possessing conspicuously short spicules (81-87 µm long) with heavily sclerotized distal parts, the gubernaculum bearing a reflected dorsal barb, and in the length ratio of the gubernaculum and spicules (1:1.23-1.42) in the male. Philometra cynoscionis (only gravid females) found subcutaneously in the host's tissue (lateral to the ascending process of the premaxilla and also posteromedial to the length of each maxilla) is characterized mainly by the presence of cephalic papillae arranged in two circles (8 large papillae in outer circle and 6 small papillae in inner circle), the absence of caudal projections, the body size (length of gravid female 20-33 mm) and the location in the host.During recent investigations into the parasites of fishes in the estuarine systems on the Atlantic coast of South Carolina carried out by the research team of one of the authors (I. de Buron), the spotted seatrout Cynoscion nebulosus (Cuvier) was found to harbour philometrid nematodes located in the ovaries and in the subcutaneous tissue of the head (lateral to the ascending process of each premaxilla, and posteromedial to each maxilla). These proved to represent two previously undescribed species of the genus Philometra Costa, 1845, which are described herein.Cynoscion nebulosus is an important food and sport fish (up to 1 m long and 7 kg weight) inhabiting estuaries of rivers and shallow coastal waters, distributed in the West Atlantic from New York to Florida and in the entire Gulf of Mexico (Froese and Pauly 2005). MATERIALS AND METHODSSpotted seatrout were collected using trammel netting during daytime ebbing tides primarily over mud and oyster shell substrates adjacent to the marsh (<2 m depth). Fish were measured, placed on ice and transported to the laboratory for immediate dissection. Nematodes recovered were washed in physiological saline and then fixed in 70% ethanol or in 4% or 10% formaldehyde solution in physiological saline. Some specimens were fixed and stored in 95% ethanol for subsequent DNA examination. For light microscopy, specimens were cleared with glycerine. Drawings were made with the aid of a Zeiss drawing attachment. After examination, male specimens were mounted in glycerine-jelly as slides, female specimens were maintained in 70% ethanol in vials. Specimens used for scanning electron microscopy (SEM) were transferred to 4% formalin and then postfixed in 1% osmium tetroxide, dehydrated through a graded ethanol series, critical point dried and sputter-coated with gold; they were examined using a JSM-6300 scanning electron microscope at an accele...

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Section: Figs 1mentioning

confidence: 75%

Two new species of Philometra (Nematoda: Philometridae) parasitic in the perciform fish Cynoscion nebulosus (Sciaenidae) in the estuaries of South Carolina, USA

Moravec¹,

Buron²,

Roumillat³

2006

FOLIA PARASIT

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“…Of all these species, only five have been reported from the Western Atlantic: Philometra carolinensis Moravec, de Buron et Roumillat, 2006 from Cynoscion nebulosus (Cuvier) (Sciaenidae) in the USA (South Carolina); P. lateolabracis (Yamaguti, 1935) (Rees 1970;Crisp and Klein 1973;Ramachandran 1973;Martínez and Ventosa 1982;Moravec et al 1995Moravec 2006). Linton (1901Linton ( , 1907) also reported Philometra globiceps (Rudolphi, 1819) from five fish species belonging to the Belonidae, Lobotidae, Megalopidae, Pomatomidae and Scombridae off the USA (Massachusetts) and Bermudas, but this identification is doubtful (Petter andRadujkoviae 1989, Moravec 2006).…”

Section: Philometra Sp (Figs 4 and 5)mentioning

confidence: 99%

Some gonad-infecting species of Philometra (Nematoda, Philometridae) from offshore fishes of South Carolina and Georgia, USA, including Philometra charlestonensis sp. nov. from the scamp Mycteroperca phenax

Moravec

Buron

Baker

et al. 2008

Acta Parasitologica

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Three gonad-infecting species of Philometra Costa, 1845 were, for the first time, recorded from perciform fishes from estuarine and marine waters in South Carolina and Georgia, USA: Philometra charlestonensis sp. nov. from the scamp Mycteroperca phenax (Jordan et Swain) (Serranidae), P. saltatrix Ramachandran, 1973 from the bluefish Pomatomus saltatrix (Linnaeus) (Pomatomidae), and Philometra sp. from the Atlantic croaker Micropogonias undulatus (Linnaeus) (Sciaenidae). The new species is characterized mainly by males (body length 2.65-3.14 mm) with equally long, needle-like spicules (length 132-141 µm) and the gubernaculum (81-93 µm) bearing dorsal transverse lamella-like structures on its distal portion, the body length of gravid females (168-247 mm), the presence of a well-developed anterior bulbous inflation on the female oesophagus, and by the length of the first-stage larvae (544-597 µm). A key to gonad-infecting species of Philometra parasitizing marine and brackish-water fishes is provided.

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“…Of them, only four have been reported from the Western Atlantic: Philometra carolinensis Moravec, de Buron et Roumillat, 2006 from Cynoscion nebulosus (Cuvier) (Sciaenidae) in the USA (South Carolina); Philometra lateolabracis (Yamaguti, 1935) from several fish species of different families in Bermuda, Cuba and Brazil; Philometra margolisi Moravec, Vidal-Martínez et Aguirre-Macedo, 1995 from Epinephelus morio (Valenciennes) (Serranidae) in Mexico (Gulf of Mexico); and Philometra saltatrix Ramachandran, 1973 from Pomatomus saltatrix (Linnaeus) (Pomatomidae) in the USA (Connecticut) (Rees 1970;Crisp and Klein 1973;Ramachandran 1973;Martínez and Ventosa 1982;Moravec 2006;Moravec et al 1995Moravec et al , 2006. Linton (1901Linton ( , 1907) also reported Philometra globiceps (Rudolphi, 1819) from five fish species belonging to the Belonidae, Lobotidae, Megalopidae, Pomatomidae and Scombridae in the USA (Massachusetts) and Bermudas, but this identification is doubtful (Petter andRadujkoviae 1989, Moravec 2006).…”

Section: Discussionmentioning

confidence: 99%

“…The only record of the male identified as P. lateolabracis in the Western Atlantic is that of Crisp and Klein (1973) from Haemulon plumieri (LacépPde) (Haemulidae) from the Atlantic Ocean near the coast of Brazil; the actual length of spicules of a single, inadequately described male was 174 µm (see Moravec et al 1998). Moravec and Genc (2004) reported the males of P. lateolabracis with the spicule length 114-189 (mean 172) µm from Mycteroperca rubra (Bloch) (Serranidae) from the Mediterranean Sea near Turkey and Merella et al (2004) a single male with spicules allegedly about 260 µm long from Epinephelus marginatus (Lowe) (Serranidae) from the Mediterranean Sea near Spain.…”

Section: Discussionmentioning

confidence: 99%

A new species of Philometra (Nematoda, Philometridae) from the gonads of the rock hind Epinephelus adscensionis (Osteichthyes) from the southern Gulf of Mexico

Moravec

Salgado‐Maldonado

2007

Acta Parasitologica

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A new species of parasitic nematode, Philometra mexicana sp. nov. (Philometridae), is described based on males and females parasitizing the gonads of the marine perciform fish (rock hind) Epinephelus adscensionis (Osbeck) (Serranidae) off the coast of the southern Gulf of Mexico (reefs of the Enmedio Island, Veracruz), Mexico, collected on 10 April 1990. The new species is characterized mainly by very small males (body length 1.63-1.86 mm) with equally long, needle-like spicules (length 90-120 µm) and the gubernaculum (57-66 µm) without the usual dorsal barb on the distal end, the body length of gravid females (178-230 mm), the presence of a well-developed anterior bulbous inflation on the female oesophagus, and by the length of the first-stage larvae (420-435 µm). A comparison with other congeners parasitizing the gonads of marine fishes is provided. The cephalic end of the gravid female of Philometra margolisi Moravec, Vidal-Martínez et Aguirre-Macedo, 1995, another related species from the gonads of Epinephelus [E. morio (Valenciennes)] in Mexico, has been studied by SEM for the first time; it confirms the arrangement of the cephalic papillae as reported in the original species description. Philometra mexicana is the fifth species of Philometra reported from the gonads of marine fishes in the West Atlantic region.

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Contribution to the knowledge of Philometra lateolabracis Yamaguti, 1935 (Nematoda, Filarioidea)

Cited by 17 publications

References 0 publications

Two new species of Philometra (Nematoda: Philometridae) parasitic in the perciform fish Cynoscion nebulosus (Sciaenidae) in the estuaries of South Carolina, USA

Two new species of Philometra (Nematoda: Philometridae) parasitic in the perciform fish Cynoscion nebulosus (Sciaenidae) in the estuaries of South Carolina, USA

Some gonad-infecting species of Philometra (Nematoda, Philometridae) from offshore fishes of South Carolina and Georgia, USA, including Philometra charlestonensis sp. nov. from the scamp Mycteroperca phenax

A new species of Philometra (Nematoda, Philometridae) from the gonads of the rock hind Epinephelus adscensionis (Osteichthyes) from the southern Gulf of Mexico

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