Two new species of nematodes (Chabertiidae: Labiostrongylinea) from Dorcopsis muelleri in Raja Ampat Island, Papua, were described and figured. Dorcopsinema longispicularis sp.nov.is most similar to D. simile, but can be distinguished from it in being a smaller worm with longer spicules and a relatively longer oesophagus, as well as in the form of the posterior lip of the genital cone, the form...

We demonstrate through cell ablation, molecular genetic, and pharmacological approaches that during C. elegans male mating behavior, the male inserts his copulatory spicules into the hermaphrodite by regulating periodic and prolonged spicule muscle contractions. Distinct cholinergic neurons use different ACh receptors and calcium channels in the spicule muscles to mediate these contractile beha...

Summary The sex organs are important for nematode systematics, but the associated muscles rarely used as phylogenetic characters. This research aimed to study musculature of Panagrolaimus detritophagus , using confocal microscopy. ring-shaped anal sphincter is pierced by a biconical X-structure and connected two pairs processes subventral stomato-intestinal dorsal body wall. female has vaginal ...

This study presents a case of a 15-year-old boy who had a right vertebral artery dissection with distal embolization from repeated trauma from an occipital bony spicule. The authors hypothesize that this bony spicule was contacting the left vertebral artery during head rotation, resulting in trauma to the vessel and formation of emboli which then showered distally, causing strokes in the poster...

The objective of this study was to investigate the correlation between spicular signs on computed tomography (CT) scans and peripheral lung cancer (PLC) that is associated with interstitial lung disease (ILD) and chronic obstructive pulmonary disease (COPD). We analyzed clinical data from 96 PLC cases and grouped patients based on whether they had interstitial pneumonia into either ILD/COPD gro...

A new nematode species, Capillaria plectropomi n. sp. (Capillariidae), is described from the intestine of the leopard coral grouper Plectropomus leopardus (Lacepède) from coral reefs off New Caledonia. The new species, belonging to the subgenus Neocapillaria Moravec, 1987, differs from other congeneric species of this subgenus from marine fishes mainly in the length (168-186 μm), shape and stru...

Monophyly for the Nematodirinae, with 5 genera, Murielus, Rauschia, Nematodiroides, Nematodirus, and Nematodirella was confirmed based on comparative morphology and phylogenetic analysis of structural characters. This concept for the nematodirines excludes the monotypic Lamanema chavezi, but otherwise corroborates generic-level diversity as defined in prior studies. Exhaustive analysis resulted...

Nematode parasites and associates of four bark beetle species in British Columbia were surveyed. Bursaphelenchus varicauda n.sp., Ektaphelenchus macrostylus, Panagrolaimus dentatus, and Cryptaphelenchus latus were found associated with Dendroctonus pseudotsugae. Parasitorhabditis obtusa was found in the gut and Contortylenchus reversus in the hemocoel of both D. pseudotsugae and D. rufipennis. ...

A new nematode species, Paracapillaroides acanthocotylus sp. n., is described from the marine fish Nemadactylus bergi (Norman) (Latridae, Perciformes) from waters off Mar del Plata, Argentina (38 degrees 08'S, 57 degrees 32'W) (prevalence 81.8%, mean intensity 12.4 +/- 10.3). The new species is readily distinguished from P. agonostomi Moravec, Salgado-Maldonado et Caspeta-Mandujano, 1999, the o...