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.

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.

scholarly journals Buckleyella ornata n. sp. (Nematoda: Philometridae) from the abdominal cavity of the talang queenfish Scomberoides commersonnianus (Perciformes: Carangidae) off the northern coast of Australia

2014 ◽  
Vol 51 (3) ◽  
pp. 230-235 ◽  
Author(s):  
F. Moravec ◽  
B. Diggles ◽  
L. Barnes ◽  
W. Macbeth
Keyword(s):  
Abdominal Cavity ◽  
Gravid Female ◽  
Nematode Species ◽  
The Body ◽  
Nominal Species ◽  
Northern Coast ◽  
Microscopical Examination ◽  
Electron Microscopical ◽  
Gravid Females ◽  
External Circle

AbstractA new nematode species, Buckleyella ornata n. sp. (Philometridae), is described from female specimens found in the abdominal cavity (mesenteries) of the talang queenfish Scomberoides commersonnianus Lacepède (Carangidae, Perciformes) caught in Darwin Harbour, northern Australia. Based on light and scanning electron microscopical examination, the new species mainly differs from the only other congeneric species B. buckleyi Rasheed, 1963 in having a markedly shorter oesophagus (2.04–2.75 mm long), by the absence of a cephalic mound around the mouth aperture, by the presence of four submedian cephalic papillae of the inner circle, and by a somewhat different arrangement of cuticular ornamentations on the body surface. Three protruding oesophageal teeth and large, dome-shaped cephalic papillae of the external circle present in the smallest gravid female of B. ornata are atrophied in larger conspecific gravid females. Buckleyella ornata is the first known nominal species of a philometrid parasitizing carangid fishes in Australian waters.

Philometra floridensis sp. n. (Nematoda: Philometridae) from the ovary of red drum Sciaenops ocellatus (Osteichthyes: Sciaenidae) off the coast of Florida, USA

2009 ◽  
Vol 84 (1) ◽  
pp. 49-54 ◽  
Author(s):  
F. Moravec ◽  
E.J. Fajer-Avila ◽  
M. Bakenhaster
Keyword(s):  
New Species ◽  
Nematode Species ◽  
Red Drum ◽  
Sciaenops Ocellatus ◽  
Male And Female ◽  
The Third ◽  
Scanning Electron Microscopy Examination ◽  
Gravid Females ◽  
Treasure Island ◽  
Microscopy Examination

AbstractA new nematode species, Philometra floridensis sp. n. (Philometridae), is described from male and female specimens found in the ovary of red drum, Sciaenops ocellatus (Linnaeus) (Sciaenidae, Perciformes), from the Gulf of Mexico off Treasure Island, Florida, USA. Based on light and scanning electron microscopy examination, the new species differs from most other gonad-infecting Philometra spp. in having a smooth gubernaculum with a distinct dorsal tooth on the distal tip. The new species is most similar to P. carolinensis Moravec, de Buron & Roumillat, 2006, but differs in length and shape of spicules. It can be distinguished from P. carolinensis and other species with unknown males, by the markedly greater body length of gravid females (up to about 100 cm). Philometra floridensis is the third valid gonad-infecting species of Philometra reported from sciaenids.

First description of a Raphidascaris species (Nematoda: Raphidascarididae) in a mudskipper Apocryptes bato (Actinopterygii: Gobiidae) from West Bengal, India

2021 ◽  
Vol 95 ◽  
Author(s):  
B.K. Patra ◽  
A. Choudhury ◽  
R. Thorn ◽  
A. Ash
Keyword(s):  
New Species ◽  
Ribosomal Rna ◽  
West Bengal ◽  
Phylogenetic Analyses ◽  
Nematode Species ◽  
Male And Female ◽  
Molecular Analyses ◽  
Ribosomal Rna Gene

Abstract A new nematode species, Raphidascaris mundeswariensis n. sp. (Raphidascarididae), is described from male and female specimens found in the intestines of the mudskipper Apocryptes bato (Hamilton, 1822) (Gobiidae) from the Mundeswari River of West Bengal, India. This species is distinguished from its congeners by 214–255-μm-long spicules, 14 pairs of preanal papillae of two markedly different sizes, one pair of adanal papillae, six pairs of postanal papillae and the absence of lateral alae. Phylogenetic analyses using partial sequences of the 28S ribosomal RNA gene place the new species in a clade containing Raphidascaris gigi, Raphidascaris lophii, Raphidascaris longispicula and two species of Hysterothylacium. The molecular analyses also corroborate results of previous studies that have found Raphidascaris and Hysterothylacium to be paraphyletic. The finding of R. mundeswariensis in A. bato is the first Raphidascaris species described from a mudskipper anywhere.

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 Raphidascaris (Ichthyascaris) arii sp. n. (Nematoda: Anisakidae), a new ascaridoid nematode from marine catfishes in the Gulf of Thailand

2011 ◽  
Vol 48 (4) ◽  
pp. 262-267 ◽  
Author(s):  
T. Yooyen ◽  
F. Moravec ◽  
C. Wongsawad
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Coastal Region ◽  
Nematode Species ◽  
Gulf Of Thailand ◽  
Male And Female ◽  
The Gulf Of Thailand ◽  
Tail Tip ◽  
Gravid Females ◽  
Scanning Electron

AbstractA new nematode species, Raphidascaris (Ichthyascaris) arii sp. n. (Anisakidae), is described from male and female specimens found in the intestine of two species of marine siluriform fishes, the spotted catfish Arius maculatus (Thunberg) (Ariidae) (type host) and the striped eel catfish Plotosus lineatus (Thunberg) (Plotosidae) from the coastal region of the Gulf of Thailand, Thailand. Based on light and scanning electron microscopy examinations, the new species differs from other nine representatives of the subgenus Ichthyascaris Wu, 1949 mainly in the length of spicules (210–333 μm), body length of gravid females (10–17 mm), and in the presence of small cuticular spines or protuberances on the tail tip of both sexes and 21–30 pairs of preanal and 8 pairs of postanal papillae in the male. This is the first species of this subgenus reported from fishes of the order Siluriformes and the first species of the subgenus Ichthyascaris Wu, 1949 recorded from the Gulf of Thailand.

scholarly journals Morphological reconsideration of the araphid genus Pseudostaurosira (Bacillariophyceae), a revision of Gedaniella, Popovskayella and Serratifera, and a description of a new Nanofrustulum species

2019 ◽  
Vol 152 (2) ◽  
pp. 262-284 ◽  
Author(s):  
Eduardo A. Morales ◽  
Carlos E. Wetzel ◽  
Maria Helena Novais ◽  
Krisztina Buczkó ◽  
M. Manuela Morais ◽  
...  
Keyword(s):  
New Species ◽  
Classification Scheme ◽  
Morphological Data ◽  
Undescribed Species ◽  
Apical Pore ◽  
Molecular Information ◽  
Electron Microscopical ◽  
Distinguishing Features ◽  
A New Species ◽  
New Framework

Background and aims – As a result of the description of many new species, reanalyses of type material, and information becoming available on valve morphogenesis in small araphid diatoms lacking a rimoportulae, the existing classification scheme at the genus level needs revision. Because morphological information has increased manyfold since the system provided by Williams & Round (1987), it may now be possible to find distinguishing characters in order to produce a more stable and useful framework, encompassing a morphogenetic perspective, which could then guide the placement of newly discovered taxa. This new framework could also be used to help assess the molecular information generated for the group, based on which many new genera are being erected, but perhaps without proper pondering of morphological data. Methods – A thorough review was made of available published information on the ultrastructure of small-celled araphid diatoms lacking rimoportulae. In addition, image databases were searched, and new light and scanning electron microscopical observations made of some hitherto undescribed species. Key results and conclusions – We provide a table of putative distinguishing features for nine genera (Nanofrustulum, Opephora, Pseudostaurosira, Pseudostaurosiropsis, Punctastriata, Sarcophagodes, Stauroforma, Staurosira and Staurosirella), together with a discussion on their value for discriminating these small diatoms using a morphogenetic perspective. Based on our findings, we amend the genus Pseudostaurosira, establishing wide and short vimines as its most characteristic feature. We use our system in describing a new species from Bolivia, which we place in Nanofrustulum based on its quasifract copulae, the distinguishing trait of the genus. The new species is distinguished from its congeners by its heteropolar valves, apical pore field features, and the multiseriate areolae. We also examine the three genera Popovskayella, Gedaniella, and Serratifera, the latter two recently erected based on molecular information. Since none of these latter genera pass the morphogenetic evaluation we think is essential, we place them in synonymy with other genera and provide the consequent nomenclatural changes. Finally, we make several new combinations in Nanofrustulum, Pseudostaurosira, Sarcophagodes and Staurosirella.

scholarly journals Two new species of philometrid nematodes (Philometridae), Barracudia notabilis n. sp. and Philometra consimilis n. sp., from the ovary of the hound needlefish Tylosurus crocodilus (Belonidae) off Florida, USA

2021 ◽  
Vol 58 (3) ◽  
pp. 271-280
Author(s):  
F. Moravec ◽  
M. D. Bakenhaster
Keyword(s):  
New Species ◽  
Atlantic Ocean ◽  
Body Length ◽  
Atlantic Coast ◽  
The Body ◽  
Unique Structure ◽  
Two New Species ◽  
Electron Microscopical ◽  
Gravid Females ◽  
Scanning Electron

Summary Two new species of philometrid nematodes (Philometridae), Barracudia notabilis n. sp. and Philometra consimilis n. sp., are described from males found in the ovary of the hound needlefish Tylosurus crocodilus (Péron et Lesueur) (Belonidae) from off the Atlantic coast of Florida, USA. Both species are described and illustrated based on light and scanning electron microscopical examinations. Barracudia notabilis n. sp., the first representative of this genus from fishes in the Atlantic Ocean, can be differentiated from other congeners by the body length of the male (2.69 mm), the length of the gubernaculum (57 μm) and spicules (81 μm), and by the shape of the gubernaculum. Philometra consimilis n. sp. differs from all congeners mainly in the unique structure of the distal tip of the gubernaculum (bearing two smooth dorsal barbs) and the species is also characterized by the length of spicules (111 μm) and the length of the gubernaculum (84 μm). Further studies are needed to discover and describe so far unknown gravid females of Barracudia spp.

scholarly journals Redescription of the female of Mexiconema liobagri (Nematoda: Daniconematidae), a little-known parasite of the rare endemic catfish Liobagrus reinii (Amblycipitidae), in Japan

2008 ◽  
Vol 45 (2) ◽  
pp. 106-108 ◽  
Author(s):  
F. Moravec ◽  
T. Shimazu
Keyword(s):  
Nematode Species ◽  
Original Description ◽  
Body Cavity ◽  
The Body ◽  
New Localities ◽  
Electron Microscopical ◽  
Gravid Females ◽  
Rare Endemic ◽  
First Time ◽  
Nara Prefecture

AbstractGravid females of the little-known dracunculoid nematode Mexiconema liobagri Moravec et Nagasawa, 1998 (Daniconematidae), a parasite of the rare endemic catfish Liobagrus reinii Hilgendorf (Amblycipitidae), were found in the body cavity of this fish from two new localities in Japan: the Takami River at Kotsugawa, Higashiyoshino, Nara Prefecture and the Tenryu River at Ina, Nagano Prefecture, representing the second record of this nematode species since its original description. Light and scanning electron microscopical examinations of these specimens enabled us to supplement the original description of M. liobagri and to recognise biometrical variability in this species. Details of the cephalic structure of M. liobagri (presence of the small triangular mouth armed with six denticles, surrounded by a pair of large lateral amphids and four submedian pairs of small cephalic papillae) are described for the first time. In addition to M. liobagri, another specific nematode parasite, Rhabdochona japonica Moravec, 1975, was recorded in the intestine of L. reinii from the Takami River.

The taxonomy of sin croaker Johnieops sina (Cuvier) in Iraqi marine waters, North-West Arabian Gulf

2013 ◽  
Vol 26 (2 (special Issue)) ◽  
pp. 55-71
Author(s):  
A. R. M. Mohamed ◽  
A. K. T. Yesser ◽  
A. H. J. Abdullah
Keyword(s):  
Arabian Gulf ◽  
Marine Waters ◽  
North West
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