530 likes | 830 Views
Practical insect interrelationships. Third year zoology students Faculty of science Tanta university by. Insect interrelationships with. Man. among insects. Plants. Microorganisms. 1-Insects interrelationships with man. Injurious insects.
E N D
Practical insect interrelationships Third year zoology students Faculty of science Tanta university by
Insect interrelationships with Man among insects Plants Microorganisms
1-Insects interrelationships with man Injurious insects Beneficial insects Direct Indirect
A-Direct injurious insects 1- Entomophobia O: Himptera ex: Lethocerus niloticum
2- Annoyance O:Diptera ex: calliphorasp (Blue fly)
3-Evenomization A- stining insects B-vesicating coeloptera O: Hymenoptera Ex: Vespa orientalis O: Coleoptera Ex: Meloesp
4-Myiasis o: Diptera ( flies) Enteric myiasis Ex: Musca domistica Ex:Sarcophagasp Traumatic myiasis Ex: calliphorasp
Musca demostica Sarcophagasp
5- allergy O: Dictyoptera ex: Periplanta americana
6- Dermatosis o: Anopleura (suking louse)ex: Pediculiushumanus( human louse)
2- Insects as avector of human diseases A- plague disease Agent:Yersinia pestis(bacteria) Vector: o: siphonoptera( fleas) Ex:Xenopsylla cheopis( rat flea)
2- Filariasis disease Agent : Wucheria bancrofti( nematodes) Vector: o: Diptera ex: female culexsp
3- Malaria disease Agent: plasmodium sp (protozoa) Vector: o: diptera ex: female anopheles
Indirect injury of insects to man 1- Destruction of growing plants O: Lepidoptera (Moths) Ex: Spodoptera littoralis(cotton leaf worm)
2- Destruction of stored products O: coleoptera( beetles and weevils) Ex Sitophilus oryzae ( rice weevil)
3- insects as parasites of domestic animals A- Ectoparasitism 1-O: Mallophaga (chewing lice) Ex: Columbicola columbae (bird lice)
2- O: Diptera Ex: Stomoxyssp ( stable fly)
B- Endoparasitism O: Diptera Ex Gastrophilus intestinalis( horse bot fly)
B- beneficial insects 1- insect as scavengers O: Isoptera Ex: ants and termits
2- pollination of crops O: Hymenoptera Ex: Apis mellifera (honey bee)
3- Production of commercial products as: A- honey O: Hymenoptera B- bees wax Ex: Apis mellifera (honey bee) C-royal jelly D-bee venom
4- insects as amodel system for scientificpurposes O: Diptera Ex :Drosophilasp
5- Destruction of human enemies ( biological control) A- Predators O: Odonata Ex: Hemianaxsp (Dragon fly)
2- O: Neuroptera ex: chrysopasp ( aphid lion) 3-o: coleoptera ex: coccinellasp ( lady bird beetels)
B- Parasitiods O: Diptera Ex: Tachniasp
Interrelation ship of insects and plants Phytophagus insects Entomophagus plants Entomophilus plants Insect transmit plant pathogen
1-phytophagus insects: A- leaf- feeders O: orthoptera ex schistocercasp (locust)
2- fruit feeders O: Diptera ex: ceratitis capitata (mediterranean fruit fly)
3-seed feeders O: coleoptera ex: Bruchussp
4- Root chewers O: orthoptera ex: Gryllotalpa gryllotalpa ( mole cricket)
B- sucking insects O: Hemiptera ex: Nezara viridula (plant bug)
2- Entomophagus plants Plants capture insects by structural modifications Ex: pitcher plants
2- plants entrap insects by special movement of modified leaves Ex: sundew or Droserasp
3- Entomophilus plants Ex1 : O:Hymenoptera ex: Apis mellifera( honey bees) Ex2: Fig wasp
C-Insect transmit plant pathogens 1- through ovipostion wounds Tree crickt canker of appel
1- parental care O: Dermaptera ex: Labidura riparia (ear wig)
2-Gergarious insects O: coleoptera ex: Rodalia cardinalis