Halomonhystera vandoverae

Halomonhystera vandoverae	Contents	Rev: 02/22/2024
	Classification	Biology and Ecology
	Morphology and Anatomy	Life Cycle
Return to Halomonhystera Menu	Economic Importance	Ecosystem Functions and Services
	Distribution	Management
Return to Monhysteridae Menu	Feeding	References
	Go to Nemaplex Main Menu	Go to Dictionary of Terminology

Classification:

Chromadorea
Chromadoria
Monhysterida: Monhysterina
Monhysteroidea
Monhysteridae
Halomonhystera vandoverae (Zekeky, Soreneson & Bright, 2006) Tchesunov, 2015

Synonyms:

Thalassomonhystera vandoverae (Zekeky, Soreneson & Bright, 2006) Tchesunov, Portnova, & van Campenhout, 2015

Morphology and Anatomy:

Very small nematodes.
Body spindle-shaped, slender.
Cuticle thin, smooth. Many small light-refracted grains scattered in the body.
Anterior end and labial region not offset.
Inner labial sensilla not visible; ten very shortouter labial setae and four slightly longer cephalic setae
Amphideal fovea with a cuticular rim.
One or two lateral setae just posterior to the amphideal fovea
Postamphideal and cervical setae slightly longer than the anterior setae.
Buccal cavity small, cylindro-conoid, with weakly sclerotized rhabdions.
Pharynx cylindroid, relatively wide, muscular throughout its length.
Pharyngeal glands nor visible.
Renette cell body posterior to the cardia, to the right of the intestine.

	Females: Monodelphic;gonad to the right of the intestine. Body narrows posterior to vulva. Vulva at a considerable distance anterior to the anus, Uterus may contain one to four fertilized eggs about . Tiny spherical spermatozoa in between fertilized eggs and immature oocytes. Tail conical, terminated with a conical spinneret. Tail is mostly dorsally bent.

Males: Monorchic. Spicules slender, arcuate, distally pointed, proximally with weakly developed knobs. Gubernaculum with short, paired caudal apophyses. RefL Tchesunov, 2015
Reported median body size for this species (Length mm; width micrometers; weight micrograms) - Click:

Distribution:

Described from specimens from Snake Pit hydrothermal site, mid-Atlantic Ridge, hydrothermal site Snake Pit at 3420â€“3480 m depth); washed from and aggregate of mussels.

Feeding:

Non-selective deposit feeders, actually bacteria feeders (Heip et al., 1988)

Life Cycle:

Probably sexually reproducing.

Ecophysiological Parameters:

For Ecophysiological Parameters for this species, click	If species level data are not available, click for genus level parameters

Ecosystem Functions and Services:

References:

Heip, C., Vincx, M., Vranken, G. 1985. The ecology of marine nematodes. Oceanography and marine biology. Ann Rev Lond 23:399-489

Tchesunov, A.V. 2015. Free-living nematode species (Nematoda) in hydrothermal sites of the North Mid-Atlantic Ridge. Helgoland Marine Research 69:343-384.

Tchesunov, A.V., Portnova, D.A,, and van Campenhout, J. 2015 Description of two free-living nematode species of Halomonhystera disjuncta complex (Nematoda: Monhysterida) from two peculiar habitats in the sea. Helgol Mar Res 69:57-85. doi:10.1007/ s10152-014-0416-

Zekely, J,, SÃ¸rensen, M,, Brigh,t M. 2006 Three new nematode species (Monhysteridae) from deep-sea hydrothermal vents. Meiofauna Marina 15:25-42