Gymnophiona caudata anura

1. PRESENTATION TOPIC
REPRODUCTION IN AMPHIBIANS
Presented by:
•Koukab
Yasmeen
•Presented to :
•Prof : Maria
Ghazanfar

2. REPRODUCTION IN AMPHIBIANS

8. CAECILIANS DISPLAY 3 REPRODUCTIVE
MODES
•Oviparous with free living aquatic larvae
•Oviparous with direct development
•And
•Viviparous both terrestrial and aquatic

9. INTERNAL FERTILIZATION
•Caecilians practice internal fertilization,
where the make deposits sperm directly
into the female reproductive tract.
•The exact method of sperm transfer varies
among species

10. OVIPARITY AND VIVIPARITY
•Most caecilians are oviparous, meaning
they lay eggs . However some species are
viviparous and give birth to live young.
This is a unique characteristics among
amphibians.

11. PARENTAL CARE AND DIRECT
DEVELOPMENT
PARENTAL CARE
• Caecilians display varying
levels of parental care .
• In oviparous species the
female may guard the eggs ,
coil around them or transport
them to suitable locations.
DIRECT
DEVELOPMENT
• Caecilians undergo direct
development skipping the
larval stage upon hatching or
birth the offspring resemble
miniature adults and are self
sufficient