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Presentation By S mt.R.Nirupama, M.sc,B.Ed, (Ph.D.) Lecturer in Zoology

Presentation By S mt.R.Nirupama, M.sc,B.Ed, (Ph.D.) Lecturer in Zoology II Sem , Animal Diversity of Chordates D.K.Govt.College (A) For Women N ellore. Where are the Young ones ?. Where are the Young ones ?. How does the young ones learn movements.

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Presentation By S mt.R.Nirupama, M.sc,B.Ed, (Ph.D.) Lecturer in Zoology

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  1. Presentation By Smt.R.Nirupama, M.sc,B.Ed, (Ph.D.) Lecturer in Zoology II Sem, Animal Diversity of Chordates D.K.Govt.College (A) For Women Nellore

  2. Where are the Young ones ? Where are the Young ones ?

  3. How does the young ones learn movements How the young ones escape from predators ?

  4. How does the young ones take food ? How does the young ones escape from predators

  5. What do you understand about those pictures ? Is it necessary to the young ones ? Let us discuss about the Topic “Parental care in Amphibians ”

  6. Objectives of the Topic • What is parental care • Why Amphibians need Parental care • Methods of parental care in Amphibians

  7. WHAT IS PARENTALCARE • “The nursing of eggs and embryos by the parents is called Parental care. It is well developed in Amphibians”

  8. WHY AMPHIBIANS NEED PARENTALCARE • “Amphibians show several mechanisms to protect their eggs and developing young ones because they lay eggsin water and exposed to various bangers”

  9. METHODS OF NURSING Amphibians protect the eggs and early developmental stages in 2 ways.1) Direct Nursing. 2) They construct nests  Direct Nursing The female Icthyophisglutinosaprotects their eggs by coiling herself around the gelatinous egg mass in the burrow.

  10. Direct Nursing The female Icthyophisglutinosaprotects their eggs by coiling herself around the gelatinous egg mass in the burrow.

  11. Amphiuma, (Congoeel) The mother will protect the eggs in underground burrows and kept a fierce watch from the attack of burrowing animals.

  12. Rhinodermadarwini It holds the eggs in vocal sacs until they hatched.

  13. Desmognathusfucus • It’s a “Tailed amphibian” • The male shows parental care • It carries the eggs around the neck in the form of a string.

  14. Alytes ( Mid wife toad ) Male take responsibility of their young ones .It carries the eggs on the back of the thigh.

  15. Pipapipa Female frog take responsibility. It attaches the egss on the dorsal side into a small pockets.

  16. Protection by Nests :- The parents construct a nest to protect their eggs There are 4 types a.Mud Nests b.Tree Nests c.Foam Nests d.Gelatinous bags

  17. HylafaberFemale makes the nest in the mud of the shallow water. After two days it lays eggs.

  18. Tree NestsPhyllomedusadeposits the eggs in the leaf nests so it folds the morgins of the leaves to form a bag like structure and lay eggs.

  19. ChiromantisThe female deposits the eggs on the foamy mass on various kinds of trees

  20. HylaresinfictrixFemale collect the string less Bee wax and applies it on the inner surface of the shallow cavity of Leaf and lay eggs.

  21. Foam Nest Rhacofhorusschlegeli(Japanese tree frog) It digs a hole and lay eggs and form a foam on that.

  22. Task For u

  23. 1.In how many ways does amphibians protect their young ones ? 2.Why does amphibians shows parental care ? 3.How does “Pipapipa” Protect their young ones? 4.Eg. for limbless Amphibian ? 5.Another name of Rhacophorusschlegeli ?

  24. Can you guess the names of these Frogs ?

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