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Zglavkari

Zglavkari. Osnovne osobine cele grupe. Najbrojnija grupa životinja Žive u svim životnim sredinama Člankovito telo ima tri regiona: glavu, grudi i trduh Spoljašnji Člankovite noge pokretno zglobljene sa telom. Člankovite noge.

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Zglavkari

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  1. Zglavkari

  2. Osnovne osobine cele grupe • Najbrojnija grupa životinja • Žive u svim životnim sredinama • Člankovito telo ima tri regiona: glavu, grudi i trduh • Spoljašnji • Člankovite noge pokretno zglobljene sa telom

  3. Člankovite noge

  4. Omotač od hitina za zaštitu tela menja se kada rastu, presvlače se

  5. Presvlačenje

  6. Člankovitost • 3 dela tela • trbuh • grudi • glava

  7. Podela • Rakovi • Paukoliki zglavkari ( pauci, škorpije, krpelji) • Stonoge • Insekti

  8. Disanje • škrge (rečni rak) • traheje (insekti) • listolika pluća (pauk)

  9. Antene • Na glavi čula dodira i mirisa

  10. oči • Složene oči

  11. Nervni sistem • lestvičast

  12. Krvni sistem • Otvoren

  13. Sistem organa za varenje • kompletan • usne nožice • Prilagođene za pridržavanje, grickanje, sisanje ili bodenje

  14. Razmnožavanje • Polno odvojenih su polova

  15. Rečni rak • Čiste vode • Glaveno-grudni deo + trbuh • Raste, presvlači se, sakriva se • Dva složena oka • Dva para antena dodir i miris

  16. Noge • Glaveno grudni region- klešta, 2 para usnih nožica , 4 para nogu za kretanje • Trbuh-6 pari nogu za kretanje i repna lepeza za plivanje claw legs

  17. Raznovrsnost • Morski- jastog, kraba, škamp, kril • Slatkovodne-rečni rak, ciklops, dafnije • Kopno-mokrice Mokrica

  18. Stonoge • Kopnene grabljivice žive na vlažnim mestima • Dva dela tela- glava i trbuh – na svakom članku po jedan par nogu • Gujin češalj, kućna stonoga

  19. Insecta • Flies, grasshoppers, lice, butterflies, beetles • 3 body segments • 6 legs • Very diverse - more insects than all other classes of animals combined

  20. Insecta • mate once in lifetime • internal fertilization • some exhibit parthenogenesis • large number of eggs to increase survival rate

  21. Insecta • insect embryos develop inside eggs, eggs hatch • some look like miniature adults • will molt several times until adult size Molt Nymph Eggs Nymph Molt Adult

  22. Insecta • INCOMPLETE METAMORPHOSIS • 3 stages: egg, nymph, adult • Nymphs can’t reproduce • Nymph gradually becomes an adult

  23. Insecta • Some undergo COMPLETE METAMORPHOSIS • 4 stages: egg, larva, pupa, adult • Metamorphosis is controlled by chemical substances in the insect Egg Adult Larva Pupa

  24. Insecta • Incomplete metamorphosis: grasshoppers and cockroaches • Complete metamorphosis: ants, beetles, flies, wasps

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