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NEMA 511 NEMATODE PARASITES OF INVERTEBRATES                                                                                 (2L+1P) II

Objective
  To sensitize about the use of nematodes for the biological control of insects, other arthropod and invertebrate pests of crops.

Theory

UNIT I
  Beneficial nematode fauna- predators, parasites of insects, molluscs and other pests; Entomophilic nematodes- important groups, types of nematodeinsect associations; taxonomic characteristics of nematode parasites of insects.

UNIT II
  Host-parasite relations and life cycle of mermithids, entaphelenchids, thelastomids, sphaerularids, allantonematids and Iotonchids.

UNIT III
  Entomopathogenic nematodes- Steiner nematids and Heterorhabditids, their mor phological characteristics, taxonomic status, biology, nematode-bacterium symbiosis and virulence mechanism.

UNIT IV
  Entomopathogenic nematodes- mass multiplication techniques, formulations, field applications and efficacy, success stories.

UNIT V
  Entomopathogenic nematodes- Ecological considerations, compatibility with various agrochemicals and their use in IPM.

Practicals
  Isolation of EPN from soil by baiting; Collection of insects and detection of nematodes; General morphology and taxonomic outline of  EPN; General microscopic features of  Mermithids, Rhabditids, Thelastomatids, Diplogasterids, Tylenchids etc.; Killing, fixing, preparation of permanent mounts of EPN; Isolation and culturing of symbiotic bacteria; Formulation of EPN and symbiotic bacteria; Laboratory bioassay of EPN/bacteria against insects.

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