Coslenchus costatus

Coslenchus costatus	Contents	Rev 09/12/2023
	Classification	Hosts
	Morphology and Anatomy	Life Cycle
Return to Coslenchus Menu	Economic Importance	Damage
	Distribution	Management
Return to Tylenchidae Menu	Feeding	References
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Classification:

Tylenchida; Tylenchina; Tylenchoidea; Tylenchidae; Tylenchinae
: Coslenchus costatus (de Man, 1921) Siddiqi, 1978

Synonyms:

Synonyms: Tylenchus costatus de Man, 1921
Anguillulina costata (de Man 1921) Goodey, 1932
Tylenchus cancellatus Cobb, 1925
Anguillulina cancellata (Cobb 1925) Goodey, 1932
Tylenchus buffalorae Altherr, 1950
Anguillulina buffalorae (Altherr, 1950) Altherr, 1952
Tylenchus neozelandicus Egunjobi, 1967: Aglenchus costatus (de Man, 1921) Meyl 1961

Morphology and Anatomy:

Key to the genera of the family Tylenchidae

Synonyms: Tylenchus costatus de Man, 1921
Anguillulina costata (de Man 1921) Goodey, 1932
Tylenchus cancellatus Cobb, 1925
Anguillulina cancellata (Cobb 1925) Goodey, 1932
Tylenchus buffalorae Altherr, 1950
Anguillulina buffalorae (Altherr, 1950) Altherr, 1952
Tylenchus neozelandicus Egunjobi, 1967

Refer to subfamily diagnosis (Tylenchinae).

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

Economic Importance:

Probably fairly small. Most reports are about occurrence and abundance rather than documenting any effects on growth.

Feeding:

Ectoparasites of plant roots, root hairs, algae, etc.

Yeates et al. (1993a) described Tylenchus as plant feeders (algal, lichen (algal or fungal component), or moss feeders that feed by piercing), or hyphal feeders.

Yeates et al. (1993b): classified Tylenchus spp. as "plant associated", indicating that they were found in the rhizospheres of plants.

Hosts:

Wood (1973a): Coslenchus costatus was observed feeding and reproducing on seedlings of fescue tussock and rye grass, on alfalfa callus tissue and moss (Tortula princeps and Bryum sp.). It was observed feeding on fungi, but it was only in two occasions for a short time.
Wood (1973b): Coslenchus costatus was observed feeding ectoparasitically on root hairs, epidermal root cells and occasionally on sloughed root-cap cells of rye grass seedlings growing in agar. It was observed feading on seedlings of white clover, suckling clover, rye grass, crested dogstail, Yorkshire fog, timothy, goosegrass, sweet vernal, browntop, cocksfoot, fescue tussock, chewings fescue.
Khera and Zuckermann (1962): Aglenchus costatus ( = Coslenchus costatus) propagated rapidly on alfalfa callus tissue at 23C, but it failed to propagate on other tissue cultures (tomato, broccoli, carrot, cabbage, rye and corn).

For an extensive host range list for this species, click

Life Cycle:

Ecophysiological Parameters:

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

Management:

For plants reported to have some level of resistance to this species, click

References:

CIH Descriptions of Plant-parasitic Nematodes Set 6, No. 80 (1976)

Khera, S., Zuckermann, B.M. (1962), Studies on the culturing of certain ectoparasitic nematodes on plant callus tissue, Nematologica, 8, 272-274

Khera, S., Zuckermann, B.M. (1963), In vitro studies of host-parasite relationships of some plant-parasitic nematodes, Nematologica, 9, 1-6

Siddiqi, M.R. 1978. The Unusual Position of the Phasmids in Coslenchus costatus (De Man, 1921) Gen. N., Comb. N. and Other Tylenchidae (Nematoda: Tylenchida). Nematologica 24:449-455.

Thorne, G. (1961), Tylenchinae, chapter 5 in: Principles of Nematology, McGraw-Hill Book Company Inc., New York - Toronto - London, 553 pp.

Wood, F.H. (1973a), Life cycle and host-parasite relationships of Aglenchus costatus (de Man, 1921) Meyl, 1961 (Nematoda, Tylenchidae), New Zealand Journal of Agricultural Research, 16, 373-380

Wood, F.H. (1973b), Nematode feeding relationships, feeding relationships of soil-dwelling nematodes, Soil Biology and Biochemistry, 5, 593-601

Yeates, G.W., Bongers, T., Goede, R.G.M. de, Freckman, D.W., Georgieva, S.S. (1993a), Feeding habits in soil nematode families and genera - an outline for soil ecologists, Journal of Nematology, 25 (3): 315-331.

Yeates, G.W., Wardle, D.A., Watson, R.N. (1993b), Relationships between nematodes, soil microbial biomass and weed-management strategies in maize and asparagus cropping systems, Soil Biology and Biochemistry, 25, 869-876.