Schistonchus (Aphelenchoididae) from Ficus (Moraceae) in Australia, with description of S. aculeata sp. n.

Nematology ◽  
2010 ◽  
Vol 12 (6) ◽  
pp. 935-958 ◽  
Author(s):  
Kerrie Davies ◽  
Faerlie Bartholomaeus ◽  
Weimin Ye ◽  
Natsumi Kanzaki ◽  
Robin Giblin-Davis
Keyword(s):  
Phylogenetic Tree ◽  
Excretory Pore ◽  
Body Shape ◽  
Host Switching ◽  
Nominal Species ◽  
Dorsal Wall ◽  
Pore Length ◽  
Pore Opening ◽  
Tail Tip ◽  
The University

Abstract A checklist of Schistonchus collected from Ficus spp. in Australia and stored in the Waite Nematode Collection at the University of Adelaide is presented. Within Australia, Schistonchus contains 12 morphospecies and four nominal species, based on a combination of the following characters: body shape when heat-relaxed, position of excretory pore, length of post-uterine sac, spicule form, and number and position of caudal papillae. Up to four morphospecies of Schistonchus have been collected from one species of Ficus and, in several cases, one morphospecies of Schistonchus has been collected from more than one host fig species. A phylogenetic tree based on D2/D3 sequences showed that Australian collections of Schistonchus fall into two clades, suggestive of endemic and introduced lineages with host switching. Schistonchus aculeata sp. n. is described from F. aculeata and F. opposita and differentiated from other species of Schistonchus by having the excretory pore opening near the lips, a short post-uterine sac, rosethorn-shaped spicules, arcuate gubernaculum or thickening of dorsal wall, amoeboid sperm, and three pairs of caudal papillae (one pair adcloacal, one just posterior to mid-tail, and one near the tail tip), association with Kradibia spp. pollinating wasps and apparent biogeographical range. A key to the known species and morphospecies of Schistonchus from Australia is presented.

Schistonchus molochi sp. n. and S. athertonensis sp. n. (Nematoda: Aphelenchoididae) from Ficus watkinsiana (Moraceae) in Australia

Nematology ◽  
2013 ◽  
Vol 15 (4) ◽  
pp. 389-400 ◽  
Author(s):  
Kerrie A. Davies ◽  
Faerlie Bartholomaeus ◽  
Natsumi Kanzaki ◽  
Robin M. Giblin-Davis
Keyword(s):  
Excretory Pore ◽  
New South ◽  
South Australia ◽  
Tail Length ◽  
Morphological Characters ◽  
Nerve Ring ◽  
South Wales ◽  
North Eastern ◽  
Pore Opening ◽  
Tail Tip

Ficus watkinsiana (sub-genus Urostigma, Section Stilpnophyllum) is endemic to Australia, growing in two disjunct populations, one in north-eastern Queensland and the other in south-eastern Queensland and north-eastern New South Wales. Schistonchus molochi sp. n. is described from F. watkinsiana in Queensland, Australia, and differentiated from other species of Schistonchus by a combination of morphological characters including having the excretory pore opening near the nerve ring, a broad head, a large, strongly sclerotised, stylet, a distinct lip sector disc with raised edges, a long post-uterine sac, rose-thorn-shaped spicule, no gubernaculum, three pairs of subventral papillae on the tail (one pair pre-cloacal on the anterior lip, one pair adcloacal on the posterior lip, and one slightly posterior to mid-tail) and bluntly rounded tail tip, and apparent biogeographical range. Presence of the lip sector disc suggests that it is closest to S. macrophylla. Schistonchus athertonensis sp. n. is also described from F. watkinsiana in Queensland and is characterised by a combination of morphological characters, including having the excretory pore opening near the nerve ring, a medium length post-uterine sac, presence of vulval flap in some specimens, rose-thorn-shaped spicule, no gubernaculum, and three pairs of subventral papillae on the tail (one pair adcloacal on the posterior lip, one at three to four-fifths of the tail length and one near the tip), a narrowly rounded tail tip, and apparent biogeographical range. Morphospecies 8, originally collected from F. obliqua, was also collected from F. watkinsiana in Queensland, and S. altermacrophylla was found with it in South Australia. These collections are further evidence of host-switching within Schistonchus.

scholarly journals Morphometric differences of Spirlin, Alburnoides Bipunctatus Bloch 1782 from the Major Catchements of Transylvania

2017 ◽  
Vol 74 (2) ◽  
pp. 177 ◽  
Author(s):  
Tudor PĂPUC ◽  
Daniel COCAN ◽  
Călin LAŢIU ◽  
Paul UIUIU ◽  
Vioara MIREȘAN
Keyword(s):  
Veterinary Medicine ◽  
Environmental Conditions ◽  
Body Shape ◽  
Aquatic Organisms ◽  
Morphometric Characteristics ◽  
Morphometric Measurements ◽  
Agricultural Sciences ◽  
Different Populations ◽  
The University

Spirlin (Alburnoides bipunctatus) is found in great numbers in most Transylvanian rivers. The species has an important role in the ecosystems in which it is found in terms of feeding and habitat occupation. The morphmetric characthers of this species vary between different habitats, outlining morphometric plasticity. Morphometric profiles were made for different populations of Spirlin, to evaluate differences in body shape. Considering that different environmental conditions influence the morphology of Spirlin populations, morphometric characteristics were determined. In order to assess differences in spirlin body shape, specimens from the four major Transylvanian catchments were collected by angling techniques. The specimens were preserved and transported to the University of Agricultural Sciences and Veterinary Medicine, Cluj-Napoca, where morphometric measurements and weight determinations were conducted in the Physiology of Aquatic Organisms Laboratory. Spirlin from Mures, Somes, Cris and Viseu catchments were studied, as it follows: 21 specimens from Aries River (Mures catchment), 61 specimens from the river Crisul Repede (Cris catchment), 21 specimens from Somesul Mic River (Somes catchment) and 20 specimens from Viseu River. A number of 39 determinations were made. The obtained results reflect the morphometric differences among populations of Spirlin from some Transylvanian main rivers.

Litylenchus coprosma gen. n., sp. n. (Tylenchida: Anguinata), from leaves of Coprosma repens (Rubiaceae) in New Zealand

Nematology ◽  
2011 ◽  
Vol 13 (1) ◽  
pp. 29-44 ◽  
Author(s):  
Kerrie Davies ◽  
Zeng Qi Zhao ◽  
Brett Alexander ◽  
Ian Riley
Keyword(s):  
New Zealand ◽  
New Genus ◽  
Large Subunit ◽  
Small Subunit ◽  
Rrna Genes ◽  
New Genus And Species ◽  
Pore Opening ◽  
Terminal Bulb ◽  
Stylet Length ◽  
Tail Tip

AbstractA new genus and species of anguinid nematode, Litylenchus coprosma gen. n., sp. n., was recovered from leaves of Coprosma repens A. Rich. from an amenity planting in Wellington, New Zealand. The genus is characterised by having slender males and slender or semi-obese females, pharynx with a weak non-muscular median bulb, a terminal bulb containing the pharyngeal glands, female with a single gonad having a quadricolumella and post-uterine sac; male with arcuate spicules and the bursa arising 1-2 anal body diam. anterior to the cloacal aperture and extending nearly to the tail tip, and does not induce galls, only foliar chlorosis. The species is characterised by having a short, robust stylet with conus forming ca 40% of stylet length and three well developed rounded knobs, secretory/excretory pore opening posterior to the nerve ring, terminal bulb abutting the intestine, and tail tip of variable form. Molecular phylogeny of near full length small subunit, D2/D3 expansion segments of the large subunit and internal transcribed spacer rRNA genes support the description of L. coprosma gen. n., sp. n. as a new genus and species.

scholarly journals A review of the taxonomy of spiny-backed orb-weaving spiders of the subfamily Gasteracanthinae (Araneae, Araneidae) in Thailand

ZooKeys ◽  
2021 ◽  
Vol 1032 ◽  
pp. 17-62
Author(s):  
Kongkit Macharoenboon ◽  
Warut Siriwut ◽  
Ekgachai Jeratthitikul
Keyword(s):  
Phylogenetic Tree ◽  
Cryptic Species ◽  
Species Identification ◽  
Intraspecific Variation ◽  
Molecular Species ◽  
Species Delimitation ◽  
Coi Gene ◽  
Nominal Species ◽  
Model Species ◽  
And Behavior

Spiny-backed orb-weaving spiders of the subfamily Gasteracanthinae are broadly distributed in the Old World. Despite their use as a model species in biology, evolution, and behavior because of their extraordinary characteristics, the systematics of this group of spiders are still poorly understood. This study elucidates the systematics of Gasteracanthinae in Thailand based on morphological and molecular-based analyses. In total, seven species from three genera, namely Gasteracantha, Macracantha, and Thelacantha, were recorded in Thailand. Shape of abdominal spines, pattern of sigilla, and female genitalia are significant characters for species identification. In contrast, coloration shows highly intraspecific variation in most species within Gasteracanthinae. A phylogenetic tree based on partial sequences of COI, 16S, and H3 genes recovered Gasteracanthinae as a monophyletic group and supports the existence of three clades. Gasteracantha hasselti is placed as a sister taxon to Macracantha arcuata. Hence, we propose to transfer G. hasselti to Macracantha. Moreover, molecular species delimitation analyses (ABGD, bPTP, and GMYC) using 675 bp of COI gene support all nominal species, with evidence of possible additional cryptic species.

Description of Criconemoides pleriannulatus n.sp. (Nematoda: Criconematidae) and a key to the species of Criconemoides

1979 ◽  
Vol 57 (1) ◽  
pp. 1-5 ◽  
Author(s):  
B. A. Ebsary
Keyword(s):  
Excretory Pore ◽  
Nominal Species ◽  
New Synonymy

Criconemoides pleriannulatus n.sp. from Russia is described and illustrated. It is differentiated from C. annulatus by a more posterior excretory pore, prominent conical vulval lips, flexible stylet, and by the first three retrorse annules. It differs from C. morgensis by having more body annules, longer stylet, hemispherical tail, and more posterior excretory pore. The male specimens identified previously as C. ratundicaudatus are correctly identified as Nothocriconema longulum. A key to the nominal species of Criconemoides is provided. New synonymy includes C. kamaliei = Macroposthonia bakeri; C. parakouensis = M. rotundicauda; C. fimbriatus = C. informis; C. kashmirensis = N. mutabile; C. dorsoflexus = M. curvata. Other changes include M. brevistyla comb.n., syn. C. brevistylus.

Schistonchus (Aphelenchoididae) from Ficus benjamina in Australia, with description of S. benjamina sp. n.

Nematology ◽  
2012 ◽  
Vol 14 (8) ◽  
pp. 1005-1013 ◽  
Author(s):  
Faerlie Bartholomaeus ◽  
Kerrie A. Davies ◽  
Weimin Ye ◽  
Robin M. Giblin-Davis
Keyword(s):  
Species Complex ◽  
Phylogenetic Analyses ◽  
Tail Length ◽  
Morphological Characters ◽  
Northern Territory ◽  
Ficus Benjamina ◽  
Tropical Asia ◽  
The North ◽  
Pore Opening ◽  
Tail Tip

Ficus benjamina (Moracaeae subfamily Urostigma, section Conosycea) grows naturally in tropical Asia and in Australia in the north of the Northern Territory and the Cairns region of Queensland. It is widely grown as an ornamental in more temperate regions of Australia. Schistonchus benjamina sp. n. is described from sycones of F. benjamina in Brisbane, and is differentiated from other species of Schistonchus by a combination of morphological characters including having the excretory pore opening near the head, a short post-vulval uterine sac, rose thorn-shaped spicule, lightly sclerotised stylet and spicule, and three pairs of subventral papillae on the tail (one adcloacal, one at mid-tail length and one near the tail tip); and apparent biogeographical range. Phylogenetic analyses based on D3 sequences from collections from both northern and southern Queensland suggest that S. benjamina sp. n. is a species complex, but specimens from the different locations cannot be separated on morphological or morphometric data. Schistonchus benjamina sp. n. is closest to S. microcarpus from F. microcarpa (Urostigma, section Urostigma) in China.

Description of Schistonchus microcarpus n. sp. (Nematoda: Aphelenchoididae), an associate of Ficus microcarpa in China

Nematology ◽  
2011 ◽  
Vol 13 (2) ◽  
pp. 221-233 ◽  
Author(s):  
Yongsan Zeng ◽  
Weimin Ye ◽  
Robin Giblin-Davis ◽  
Changhui Li ◽  
Shinian Zhang ◽  
...  
Keyword(s):  
Excretory Pore ◽  
Sequence Data ◽  
Large Subunit ◽  
Small Subunit ◽  
Rrna Gene ◽  
Small Subunit Rrna ◽  
Male Tail ◽  
Mtdna Coi ◽  
Ficus Microcarpa ◽  
Tail Tip

AbstractSchistonchus microcarpus n. sp. was recovered from the syconia of Ficus microcarpa from Shenzhen and Guangzhou, Guangdong Province, China, during a survey of nematode biodiversity from 2007 to 2009. It is characterised by possessing the combined characters of a short post-uterine sac (PUS) (3-11 μm or <0.4 vulval body diam. (VBD) long), excretory pore located just posterior to the head but anterior to the conus level of the stylet, prominent amphids, three pairs of subventral papillae on the male tail (one pair adcloacal, one pair halfway between cloaca and tail terminus, and one pair near tail tip), unique recurved and sickleshaped spicules with finely rounded tip with cucullus, amoeboid sperm, and rounded male tail tip with or without mucron. Schistonchus microcarpus n. sp. is morphologically differentiated from all other described species in this genus by the possession of a spicule with a cucullus on the tip. Schistonchus microcarpus n. sp. was easily differentiated from other sequenced species by the partial small subunit rRNA gene (SSU) and D3 expansion segments of the large subunit rRNA gene (LSU). Phylogenetic analysis with partial SSU sequences suggests that S. microcarpus n. sp. is in a highly supported monophyletic clade with sequenced Schistonchus species except for S. hirtus. Based upon inferences using D3 LSU sequence data, it forms a clade with an undescribed species of Schistonchus ex F. benjamini from Australia and is part of a larger clade of Schistonchus that mostly share the character of an anteriorly placed excretory pore. Sequences of partial mtDNA COI (590 bp) from males of S. microcarpus n. sp. with and without a mucronate tail tip were identical, proving that these two morphotypes are conspecific.

Malvinia crassa gen. n., sp. n. (Nematoda: Drilonematoidea) – a parasite of the acanthodrilid earthworm, Notiodrilus bovei, from the Falkland Islands

Nematology ◽  
2009 ◽  
Vol 11 (1) ◽  
pp. 39-45 ◽  
Author(s):  
Elena Ivanova ◽  
Birger Neuhaus
Keyword(s):  
New Species ◽  
Excretory Pore ◽  
Body Shape ◽  
Nerve Ring ◽  
Excretory Duct ◽  
Falkland Islands ◽  
Coelomic Cavity ◽  
Basal Bulb ◽  
A New Species

AbstractA new species and genus of nematodes (Ungellidae, Drilonematoidea) parasitic in the coelomic cavity of Notiodrilus bovei deposited in the collection of the Museum für Naturkunde in Berlin, is described and illustrated. Malvinia crassa gen. n., sp. n. is characterised by its short, bloated, curved body tapering to both ends, paired, superficially attached cephalic hooks, short infundibular stoma, a pharynx comprising a pre-corpal bulb-like swelling, procorpus, isthmus and basal bulb, nerve ring encircling isthmus, excretory pore located posterior to the nerve ring, weakly cuticularised excretory duct, vulva, slightly post-median, short precloacal process in males, large grain-like spermatids, sperm in spermatheca ball-shaped, ca 20 μm diam., composed of smaller particles resembling spermatids; symmetrically placed, large, fimbriate caudal organs lacking a cavity, and absence of amphids, cephalic and male cloacal sensilla and post-uterine sac. Malvinia gen. n. is differentiated from all genera of the Ungellinae on the basis of its small size, vesiculate vs vermiform body shape, very long reflexed portion of testis and highly modified sperm. From the closest species of the genus Ungella, the new species differs by the presence vs absence of a stoma and pre-corpal swelling of the pharynx, structure of fimbriate caudal organs, larger spermatids in male and sperm in female spermatheca, and absence of lateral differentiation of the cuticle. A key to the genera of Ungellinae is proposed.

Pseudopycnadena tendu sp. nov. (Digenea, Opecoelidae) in the yellow-spotted triggerfish Pseudobalistes fuscus (Perciformes, Balistidae) and additional opecoelids parasitizing fishes from the waters off New Caledonia

2007 ◽  
Vol 52 (1) ◽  
Author(s):  
Rodney Bray ◽  
Jean-Lou Justine
Keyword(s):  
Ventral Sucker ◽  
Excretory Pore ◽  
Body Shape ◽  
New Caledonia ◽  
Wide Field ◽  
Gland Cells ◽  
Plectropomus Leopardus

AbstractPseudopycnadena tendu sp. nov. is described from the balistid Pseudobalistes fuscus from the waters off New Caledonia. It differs from the only other member of the genus P. fischthali Saad-Fares et Maillard, 1986, in its broad cirrus-sac, with the wide field of large gland-cells, its less nearly circular body shape, its dorsal excretory pore, its shorter post-testicular region, its relatively larger ventral sucker and its smaller eggs. The genus is re-defined to take these distinctions into account. Other opecoelid species reported from New Caledonia are Allopodocotyle epinepheli (Yamaguti, 1942) from Epinephelus cyanopodus, E. fasciatus and E. merra, Cainocreadium epinepheli (Yamaguti, 1934) from E. coeruleopunctatus, E. fasciatus and Variola louti, Hamacreadium mutabile (Linton, 1910) from Lutjanus fulviflamma and L. kasmira, Helicometra epinepheli Yamaguti, 1934 from E. fasciatus and E. merra, Orthodena tropica Durio et Manter, 1968 from Lethrinus lentjan, Pacificreadium serrani (Nagaty et Abdel-Aal, 1962) from Plectropomus leopardus and Pseudoplagioporus interruptus Durio et Manter, 1968 from Lethrinus rubrioperculatus.

Morphological characters of dauer juveniles of three species of Bursaphelenchus Fuchs, 1937

Nematology ◽  
2016 ◽  
Vol 18 (2) ◽  
pp. 209-220 ◽  
Author(s):  
Natsumi Kanzaki ◽  
Noritoshi Maehara ◽  
Mitsuteru Akiba ◽  
Suguru E. Tanaka ◽  
Tatsuya Ide
Keyword(s):  
Excretory Pore ◽  
Posterior Part ◽  
Morphological Characteristics ◽  
Morphological Characters ◽  
Bursaphelenchus Xylophilus ◽  
The Other ◽  
Monochamus Alternatus ◽  
Body Shapes ◽  
Tail Tip

The morphological characteristics of dauer juveniles were examined forBursaphelenchusxylophilus,B. firmaeandB. mucronatus kolymensis. Dauer juveniles ofB. xylophilusandB. firmaewere collected directly from their carrier insects,Monochamus alternatusandM. grandis, respectively.Bursaphelenchs m. kolymensisdauer juveniles were induced experimentally usingM. alternatuspupae. The dauer juveniles of these three species were distinguished according to their respective body shapes.Bursaphelenchus xylophiluswas relatively slender compared to the other species. The position of the excretory pore was anterior to the median bulb inB. firmae, overlapping with the median bulb inB. xylophilus, and posterior to, or overlapping with, the posterior part of the median bulb inB. m. kolymensis. The tail tip ofB. firmaewas conical, that ofB. xylophiluscontained a short projection, while inB. m. kolymensisthe tail tip was blunt with a thick mucron.

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