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Rudimentary buccal capsule and short oesophagus are the characteristic features of
EXPLANATION
Bursate Nematodes
- Diagnostic Morphology: Members of the genus Trichostrongylus are minute, hair-like nematodes distinguished by a rudimentary (vestigial) buccal capsule lacking teeth or leaf-crowns, and a relatively short cylindrical oesophagus.
- Morphological Contrasts:
- Strongylus spp.: Possess an exceptionally large, sub-globular buccal cavity armed with external/internal leaf crowns and prominent basal teeth.
- Strongyloides spp.: Possess a long, cylindrical rhabditiform or filariform oesophagus occupying up to one-third of the total body length.
- Trichuris spp.: Possess a slender whip-like anterior portion enclosing an elongate stichosome oesophagus surrounded by a column of single stichocytes.
Correct option: (1) Trichostrongylus spp.
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