Diversity of Philippine Amphibians and Reptiles LECTURE 3...

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Diversity of Philippine Amphibians and Reptiles LECTURE 3
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Philippine Amphibians Summary of frog diversity Guide to identification Representative species
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What are amphibians? circle6 Amphibios = double life, larval metamorphosis circle6 Class Amphibia circle6 Approximately 4,000 species worldwide circle6 Anamniotes – lack embryonic membranes circle6 Naked moist skin with mucous glands circle6 Tetrapods with four limbs for terrestrial living circle6 Gills in larva and lungs in adults
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Amphibian diversity circle6 About 95 species in the Philippines circle6 7 amphibian families in 2 orders (3 worldwide) circle6 Order Caudata/ Urodela – salamanders, newts circle6 Order Gymnophiona/ Apoda – caecilians circle6 Order Salientia/ Anura – frogs and toads circle6 Ranidae and Rhacophoridae largest families circle6 Many recently described, more await discovery
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General body forms of amphibians ARBOREAL SEMI-AQUATIC TERRESTRIAL BURROWING
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Amphibian families circle6 Ichthyophiidae – Caecilians (3 species) circle6 Bufonidae – True toads (7 species) circle6 Discoglossidae – Disk-tongued frogs (1 species) circle6 Pelobatidae – Litter toads (5 species) circle6 Ranidae – True frogs (52 species), half are Platymantis circle6 Rhacophoridae – Tree frogs (17 species) circle6 Microhylidae – Narrow-mouthed frogs (10 species) Approx. 95 species – with new species being discovered
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Amphibian families circle6 Ichthyophiidae – Caecilians (3 species) circle6 Bufonidae – True toads (7 species) circle6 Discoglossidae – Disk-tongued frogs (1 species) circle6 Pelobatidae – Litter toads (5 species) circle6 Ranidae – True frogs (58 species), half are Platymantis circle6 Rhacophoridae – Tree frogs (17 species) circle6 Microhylidae – Narrow-mouthed frogs (10 species) Approx. 101 species – with new species being discovered
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circle6 Limbless, short tail pointed circle6 Burrowing small eyes covered circle6 Vermiform elonagated body circle6 With segmented annuli rings Order Gymnophiona Family Ichthyophiidae - Caecilians Ichthyopis sp. circle6 terrestial burrowing animals circle6 found in tropical lowland rainforests (sea level to 1000 m) circle6 in rotting logs and duff on forest floor circle6 larval stages aquatic, in pools of clear, unpolluted mountain streams
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Order Anura Family Bufonidae - True Toads circle6 Generally terrestrial, no disks or small round pads on digits circle6 Rough warty moist skin circle6 Pigmented larva, direct dev’t circle6 Toothless and with parotoids circle6 Bufo True Toads circle6 Montane Toad Ansonia with 2 species mcgregori & muelleri circle6 Toadlets Pelophryne with 3 species albotaeniata & lighti circle6 Pelophryne brevipes Southeast Asian Toadlet
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Philippine Toad Giant Marine Toad Bufo philippinicus Bufo marinus Cranial crest, moderate size No crest, largest toad
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Family Discoglossidae Disk-tongued Frogs circle6 Tongue disk-shaped circle6 Highly aquatic, cool streams circle6 Large stout depressed body circle6 Small head but wide mouth circle6 Stout legs, with webbed feet circle6 Restricted to Palawan region circle6 Barbourula busuangensis Philippine Discoglossid Frog
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