Mesacanthion jejuensis

Mesacanthion jejuensis	Contents	Rev 09/22/2024
	Classification	Hosts
	Morphology and Anatomy	Life Cycle
Return to Mesacanthion Menu	Economic Importance	Damage
	Distribution	Management
Return to Thoracostomopsidae Menu	Feeding	References
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Classification:

Enoplea
Enoplia Enoplida
Enoplina
Enoploidea
Thoracostomopsidae: Enoplolaiminae

Mesacanthion jejuensis Jeong, Tchesunov & Lee, 2019

Synonyms:

Morphology and Anatomy:

Cuticle smooth around cephalic capsule, finely striated posterior to cephalic capsule until tail tip.
Three lips curving outwards, each lips with two inner labial setae. Six inner labial setae, stout and conical 12 um long. Six longer outer labial setae and four shorter cephalic setae in one crown, situated at midlevel of cephalic capsule.
Epidermal glands distributed along dorsal dide along body
Buccal cavity with three mandibles and three teeth. Mandibles consisting of two rods joined by anterior rod. Lateral edges of each rod with teeth pointing inwards.
Short cervical setae in singles at level of posterior end of cephalic capsule.
Amphid below the cervical flap, pouch-shaped.
Cervical somatic setae in 8 groups of 2 to 3 around pharyngeal region. Somatic setae scarcely distributed along the body
Pharynx fairly long , cardia triangular and extending into intestine.
Tail conico-cylindrical

Male:

Diorchis, testes opposed,
Thick supplement, 18 um long, 165 umanterior to cloaca.
Spicules paired, bipartite, symmetrical, curved slightly and thick.
Gubernaculum embracing spicules, shaped like irregular triangle,
Tail elongated and papilliform with five somatic setae in tail region. Caudal gland protruded anterior to cloaca
Spinneret well developed. 1 terminal caudal seta.

Female:

Didelphic amphidelphic, both ovaries flexed inwards.
Vulva located at 55% of total body length with protruding lips.
Tail conico-cylindrical, three somatic setae in tail region and no apparent caudal setae

Ref: Jeong et al., 2019

Mesacanthion jujuensis Male anterior, lateral view. Scalle bar = -20um
Drawing from Jeong et al., 2019

Reported median body size for this species (Length mm; width micrometers; weight micrograms) - Click:

Distribution:

Described from sandy beach in intertidal zone on coast of Jeju Island, South Korea.

Life Cycle:

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

Ecosystem Functions and Services:

Predation and regulation of opportunistic species.

Jeong, R., Tchesunov, A.V., Lee, W. 2019. Bibliographic revision of Mesacanthion Filipjev, 1927 (Nematoda: Thoracostomopsidae) with description of a new species from Jeju Island, South Korea. PeerJ, DOI 10.7717/peerj.8023