Presentation on theme: "TROPICAL FROGS 3-25-08 Sounds of the Tropics. SIZE: THE RANGE IS HUGE Bufo metamorph. Bufo marinus from Surinam."— Presentation transcript:
TROPICAL FROGS 3-25-08 Sounds of the Tropics
SIZE: THE RANGE IS HUGE Bufo metamorph. Bufo marinus from Surinam
PAROTOID GLANDS ON TOADS PRODUCE TOXIC ALKALOIDS
Taken in large amounts, the alkaloids are potentially deadly. Taken in small amounts, they may be hallucigenic (and unlawful). My dog, Rex, bit toads several nights in a row. Maybe he liked it – swollen eyes and all !
TOADS DON’T CAUSE WARTS
VOCAL POUCHES ARE SHAPED DIFFERENTLY IN DIFFERENT SPECIES
SOME GROUPS HAVE ONE VOCAL POUCH, AND OTHERS HAVE TWO
A Very Loud Chorus of Frogs.
Bombina bombina and its unken reflex
UNKEN REFLEX: A DRAB COLORED ANIMAL USES BRIGHT,APOSEMATIC COLORS TO STARTLE A PREDATOR.
Pipa pipa is a strange, totally aquatic frog.
Pseudis paradoxus, is so named because its tadpole is 6” long and it metamorphoses to a 2” adult.
Rhinophrynus dorsalis, the Mexican Burrowing Frog, is surreal in appearance.
Osteocephalus taurinus, Tambopata, Perú. From the shower!
HYLID TOEPADS HAVE MULTIPLE SURFACES AND A CENTRAL MUCOUS GLAND
Hyla marmoratus, Venezuela
Hyla boans, one of the largest species of Hyla (this one from Trinidad).
A three-some – hanging by one toe (photo by Myra Hughey, 02)
Red-eyed Treefrogs lay their eggs on the undersides of broad leaves over water.
Melissa Kaintz & Myra Hughy doing their “animal observations” at the Red-eyed Treefrog pond, Cockscomb.
Cat-eyed Snakes love to eat Red- eyed Frog Eggs!
A Variety of Phyllomedusas
Phyllomedusa camba, Tambopata, Perú.
Phyllomedusa palliata, Tambopata, Perú.
Phyllomedusa tomopterna, Tambopata, Perú.
Phyllomedusa eggs over a pond, Tambopata, Perú.
Orange-legged Phyllomedusa, applying wax to prevent desiccation. Photos by Harvey Lilywhite, Natural History Magazine, January, 2002.
Phyllomedusa bicolor, a very large Amazonian monkey frog whose skin secretions are used by the natives to heighten their hearing during hunting trips – they snort the scraped and dried secretions from the skin.
Triprion spatulatus - its flat nose is an adaptation for living in bromeliads. When the frog is sitting in the water among the leaves, its protruding nose looks like a leaf. Such water holding plants are called phytotelms.
Eleutherodactylus preposypharus, from the San Miguel cave.
Eleutherodactylus rugulosus, a forest frog from Cockscomb
The White-lipped Frog, Leptodactylus labialis. This species makes its whistling call from under water.
The Belizean tink frog, Eleutherodactylus leprus.
Túngara Frog, Physalaemus pustulosus – “ phew” sound emitted as it fills with air (note the floating foam nest of this species, formed when the male kicks about in the jelly of the freshly laid eggs).
Túngara Frog, Physalaemus pustulosus – “chuck, chuck, chuck” sound emitted as it expells its air. This is the portion of the call that attracts females. Unfortunately, it is also the portion of the call that attracts Fish Eating Bats.
Ceratophrys – a very predatory genus. By David Bull
Where’s Waldo? Hint: it’s in hunting mode.
A cryptic Ceratophrys cornuta, on the forest floor in Tambopata, Perú.
Telmatobius sp., Argentina
Pleurodema brachyops Predator Defense
Mannophryne trinitatis with tadpoles. This is a non-toxic genus of the Dendrobatidae. By John Moyle
Green and Black Poison Frog, Dendrobates auratus By David Bull From the American Scientist.
Strawberry Poison Frog, Dendrobates pumilio. If I do what this frog does weekly, I would have to climb straight up a tree trunk that is 15,200 ft high – each week.
Blue Poison Frog, Dendrobates azureus By David Bull
Harlequin Poison Frog, Dendrobates histrionicus variation By David Bull All not labeled from annual report of the American Museum of Natural History. By David Bull
Dendrobatid eggs By David Bull
Lehmann’s Poison Frog, Dendrobates lehmanni Both by David Bull
Yellow-banded Poison Frog, Dendrobates leucomelas By David Bull
Red-backed Poison Frog, Dendrobates reticulatus By David Bull
Dyeing Poison Frogs (or, LSU Poison Frogs), Dendrobates tinctorius Both by David Bull
Silverstone’s Poison Frog, Epipedobates silverstonei By David Bull
Phantasmal Poison Frog, Epipedibates tricolor By David Bull
Kokoe Poison Frog, Phyllobates aurotaenia – one of the three species of frogs known to be dangerous to humans.
The strongest animal toxin known to humans – Golden Poison Frog, Phyllobates terribilis