Philometroides acanthopagri sp. nov., a new philometrid (Nematoda, Philometridae) from the musculature of Acanthopagrus latus (Sparidae) from marine waters of Iraq

2012 ◽  
Vol 57 (4) ◽  
Author(s):  
František Moravec ◽  
Abdul Jassim ◽  
Nadrah Al-Salim
Keyword(s):  
New Species ◽  
Arabian Gulf ◽  
Nematode Species ◽  
Microscopical Examination ◽  
Marine Waters ◽  
Pectoral Fins ◽  
Electron Microscopical ◽  
Acanthopagrus Latus ◽  
Southern Iraq ◽  
Scanning Electron

AbstractA new nematode species, Philometroides acanthopagri sp. nov. (Philometridae), is described from gravid and subgravid specimens found in the musculature near pectoral fins and in nasal cavity of the yellowfin seabream Acanthopagrus latus (Houttuyn) (Sparidae, Perciformes) from marine waters off the coast of southern Iraq. Based on light and scanning electron microscopical examination, the new species differs from its congeners in a combination of morphological and biometrical features. It is the first species of Philometroides reported from a sparid fish and the first representative of this genus recorded from fishes in the Arabian Gulf. A key to Philometroides species parasitizing marine and brackish-water fishes is provided.

Philometra johnii sp. nov. (Nematoda, Philometridae), a new gonad-infecting philometrid from the sin croaker Johnius dussumieri (Cuvier) (Perciformes, Sciaenidae) from marine waters of Iraq

2013 ◽  
Vol 58 (3) ◽  
Author(s):  
František Moravec ◽  
Atheer Ali
Keyword(s):  
New Species ◽  
Arabian Gulf ◽  
Nematode Species ◽  
Microscopical Examination ◽  
Marine Waters ◽  
Fish Family ◽  
Male And Female ◽  
Electron Microscopical ◽  
Gravid Females ◽  
Distinguishing Features

AbstractA new nematode species, Philometra johnii sp. nov. (Philometridae), is described from male and female specimens found in the ovary of the sin croaker, Johnius dussumieri (Cuvier) (Perciformes, Sciaenidae), in the Arabian Gulf, off the southern coast of Iraq. Based on light and scanning electron microscopical examination, the new species differs from all other gonad-infecting Philometra spp. with dorsal lamella-like structures on the distal tip of the gubernaculum in having a dorsal bipartite protuberance formed by two subdorsal lamellated parts separated from each other by a smooth longitudinal field. This gubernaculum structure is unique among all philometrids. Other distinguishing features include the structure of the male tail, number (6 pairs) and arrangement of genital papillae and the length of spicules (102–153 μm). From eight congeneric, gonad-infecting species with unknown males, the new species can be distinguished by some morphological and biometrical features found in gravid females (absence of caudal projections, length of oesophagus, moderately developed anterior oesophageal inflation, length of first-stage larvae) by the host type (fish family) and geographical distribution. Philometra johnii sp. nov. is the fourth known philometrid species recorded from marine waters of Iraq.

scholarly journals Philometroides khalili n. sp., a new philometrid nematode (Philometridae) from the operculum of the cyprinid fish Labeo rosae in Zimbabwe

2015 ◽  
Vol 52 (2) ◽  
pp. 113-117 ◽  
Author(s):  
F. Moravec ◽  
A. Halajian ◽  
S. Tavakol ◽  
I. Nyagura ◽  
W. J. Luus-Powell
Keyword(s):  
Body Shape ◽  
Gravid Female ◽  
Large Cell ◽  
Nematode Species ◽  
Cyprinid Fish ◽  
The Body ◽  
Microscopical Examination ◽  
Oesophageal Gland ◽  
Electron Microscopical ◽  
Scanning Electron

Summary A new nematode species, Philometroides khalili n. sp. (Philometridae), is described from female specimens recovered from the operculum of the freshwater cyprinid fish Labeo rosae Steindachner (Cyprinidae, Cypriniformes) caught in the Bubi River, Zimbabwe. Based on light and scanning electron microscopical examination, the new species mainly differs from the only other African congeneric species P. africanus Moravec et Van As, 2001 in the body shape (filiform), length of gravid female (56 - 71 mm), in possessing a large oesophageal gland with a conspicuously large cell nucleus and in the shape (transversely oval), size (up to 33 - 36 μm high) and distribution of cuticular bosses. From other congeners it differs by a combination of morphological and biometrical features

scholarly journals Three new species of Cucullanus (Nematoda: Cucullanidae) from marine fishes off New Caledonia, with a key to species of Cucullanus from Anguilliformes

Parasite ◽  
2018 ◽  
Vol 25 ◽  
pp. 51 ◽  
Author(s):  
František Moravec ◽  
Jean-Lou Justine
Keyword(s):  
New Species ◽  
Ventral Sucker ◽  
New Caledonia ◽  
Marine Fishes ◽  
Congeneric Species ◽  
Key To Species ◽  
Electron Microscopical ◽  
Three New Species ◽  
Scanning Electron ◽  
Shape And Size

Based on light and scanning electron microscopical studies of nematode specimens from the digestive tract of some rarely collected anguilliform and perciform fishes off New Caledonia, three new species of Cucullanus Müller, 1777 (Cucullanidae) are described: C. austropacificus n. sp. from the longfin African conger Conger cinereus (Congridae), C. gymnothoracis n. sp. from the lipspot moray Gymnothorax chilospilus (Muraenidae), and C. incognitus n. sp. from the seabream Dentex fourmanoiri (Sparidae). Cucullanus austropacificus n. sp. is characterized by the presence of cervical alae, ventral sucker, alate spicules 1.30–1.65 mm long, conspicuous outgrowths of the anterior and posterior cloacal lips and by elongate-oval eggs measuring 89–108 × 48–57 μm; C. gymnothoracis n. sp. is similar to the foregoing species, but differs from it in the absence of cervical alae and the posterior cloacal outgrowth, in the shape and size of the anterior cloacal outgrowth and somewhat shorter spicules 1.12 mm long; C. incognitus n. sp. (based on female morphology) differs from other congeneric species parasitic in the Sparidae mainly in possessing cervical alae, the postequatorial vulva, phasmids situated at the mid-length of the tail and in the size of the eggs (75–84 × 45–66 μm). A key to species of Cucullanus parasitizing anguilliform fishes is provided.

Observations on a field outbreak of Pox Virus Infection in young Nile crocodiles (Crocodylus Niloticus)

1991 ◽  
Vol 62 (1) ◽  
pp. 26-29 ◽  
Author(s):  
F. W. Huchzermeyer ◽  
K. D.A. Huchzermeyer ◽  
J. F. Putterill
Keyword(s):  
Virus Infection ◽  
Histopathological Examination ◽  
Skin Lesions ◽  
High Morbidity ◽  
Microscopical Examination ◽  
Virus Particles ◽  
Large Numbers ◽  
Intracytoplasmic Inclusions ◽  
Electron Microscopical ◽  
Scanning Electron

A field outbreak of pox virus infection in juvenile Nile crocodiles (Crocodylus niloticus), in which high morbidity and negligible mortality occurred, is described. Histopathological examination of the skin lesions revealed numerous large intracytoplasmic inclusions in the dermis and a very mild dermal inflammatory reaction. Scanning electron microscopical examination of the skin revealed the presence of large numbers of virus particles in the inclusions. Skin lesions persisted for 5 to 6 months.

Morphological investigation and description of two new Gomphonema Ehrenberg (Bacillariophyta) species from India and Vietnam with biogeographical comments

Phytotaxa ◽  
2020 ◽  
Vol 468 (2) ◽  
pp. 175-189
Author(s):  
SAMADHAN PARDHI ◽  
ANBUKKARASU VIGNESHWARAN ◽  
J. PATRICK KOCIOLEK ◽  
ANTON GLUSHCHENKO ◽  
MAXIM KULIKOVSKIY ◽  
...  
Keyword(s):  
New Species ◽  
Morphological Investigation ◽  
Freshwater Diatoms ◽  
Two New Species ◽  
Electron Microscopical ◽  
The Tropics ◽  
Scanning Electron

Two new species of Gomphonema Ehrenberg are described based on light and scanning electron microscopical observations. These are Gomphonema kallarense sp. nov. found in India and G. kezlyae sp. nov. found in India and Vietnam. We also report and document the morphology and variability of G. doonense from Vietnam, a species previously described from India based on a limited number of valves. Both G. doonense and G. kallarense have striae composed of doubly-punctate striae that are without occlusions, while G. kezlyae has striae with single rows of areolae that have external occlusions giving the impression of C-shaped openings. Our investigation shows that India and Vietnam share some species in common, adding additional evidence that the biogeography of freshwater diatoms from the tropics warrants future investigation.

scholarly journals Pinnularia caprichosa sp. nov.: a diatom from a black water Brazilian Amazon system

Phytotaxa ◽  
2015 ◽  
Vol 239 (3) ◽  
pp. 280 ◽  
Author(s):  
Andreia Cavalcante Pereira ◽  
Lezilda Carvalho Torgan ◽  
Ana Luiza Burliga ◽  
John Patrick Kociolek ◽  
Carlos E. Wetzel ◽  
...  
Keyword(s):  
New Species ◽  
River Basin ◽  
Amazon Basin ◽  
Brazilian Amazon ◽  
New Taxon ◽  
Middle Portion ◽  
Black Water ◽  
Negro River ◽  
Electron Microscopical ◽  
Scanning Electron

While possessing a remarkable diversity in the acidic and oligotrophic waters of the Amazon basin, the genus Pinnularia appears underdescribed in the region. In this study, we present light and scanning electron microscopical observations on Pinnularia caprichosa sp. nov. from Tupé Lake, a dendritic lake located on the floodplain of the Negro River basin. This new taxon has a large axial area and transapical striae that are slightly radiate to parallel and longer in the middle portion of the valve. The species was compared with Pinnularia elliptica, P. instabilis, P. lacunarum, P. montana, P. permontana and P. subflexuosa, all of which closely resemble P. caprichosa but differ from the new species in specific details of size, striae density and valve shape.

Prestauroneis genkalii—a new diatom species (Bacillariophyceae: Stauroneidaceae) from Southeast Asia

Phytotaxa ◽  
2019 ◽  
Vol 414 (4) ◽  
pp. 156-164
Author(s):  
ANTON GLUSHCHENKO ◽  
JOHN PATRICK KOCIOLEK ◽  
IRINA KUZNETSOVA ◽  
ELENA KEZLYA ◽  
MAXIM KULIKOVSKIY
Keyword(s):  
New Species ◽  
Southeast Asia ◽  
Morphological Features ◽  
New Combination ◽  
Diatom Species ◽  
Outline Shape ◽  
Electron Microscopical ◽  
One New Species ◽  
Scanning Electron

We present light and scanning electron microscopical observations on one new species of Prestauroneis from Vietnam. The new species, Prestauroneis genkalii Glushchenko, Kulikovskiy & Kociolek sp. nov., is described on the basis valve outline, shape of the apices, as well as striae and areolar densities. Morphology of Prestauroneis species, especially with respect to valve outline, is discussed. P. genkalii sp. nov. possesses all of the typical morphological features for the genus, including uniseriate striae covered by internal hymenes, a pseudoseptum at each apex and distal raphe ends extending onto the valve mantle. In addition, a new combination is suggested for Navicula pseudocrucicula Kobayasi, Prestauroneis pseudocrucicula (Kobayasi) Glushchenko, Kulikovskiy & Kociolek comb. nov. on the basis of type description. P. genkalii sp. nov. is the first member of the genus Prestauroneis reported for Southeast Asia.

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