- Aphelenchida
Taxobox
name = Aphelenchida
regnum =Animalia
phylum =Nematoda
classis =Secernentea
subclassis =Tylenchia
ordo = Aphelenchida
subdivision_ranks = Families
subdivision =
*Aphelenchidae
*Aphelenchoididae
*Myenchildae
*Paraphelenchidae A moderately large order of
nematode s. Aphelenchida have astylet for feeding and a very prominent median bulb in theoesophagus . They are cosmopolitan. Some are associated withinsect s, and may beectoparasite s orendoparasite s, or merely use theinsect as transport. Others are associated withplant s, asroot , stem, orleaf parasite s, which may be pathogenic to the plant or not. Still others are associated withfungi , and some are free-living. There may be considerable plasticity of feeding habits within species, involving almost any combination of the categories listed above. Sometimes different feeding habits involve morphologically distinct phases, but they may involve only behavioral differences, and sometimes depend only on the immediate availability of different foods. Some life cycles involve a definite progression of particular hosts and depend on the life cycle of the host. Fungal feeders may have life cycles as short as 5 days.This order includes:
*
Aphelenchidae
*Aphelenchoididae
*Myenchildae
*Paraphelenchidae
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