• Amphibians: Amplexus Bufo bufo
    Amplexus Bufo bufo
  • Amphibians: Atelopus certus calling male edit
    Atelopus certus calling male edit
  • Amphibians: Atelopus limosus female
    Atelopus limosus female
  • Amphibians: Atelopus zeteki
    Atelopus zeteki
  • Amphibians: Benny Trapp Alytes cisternasii
    Benny Trapp Alytes cisternasii
  • Amphibians: Benny Trapp Epirusfrosch Pelophylax epeiroticus
    Benny Trapp Epirusfrosch Pelophylax epeiroticus
  • Amphibians: BennyTrapp Cädiz-Scheibenzüngler bzw Iberischer Scheibenzüngler Discoglossus (galganoi) jeannaea
    BennyTrapp Cädiz-Scheibenzüngler bzw Iberischer Scheibenzüngler Discoglossus (galganoi) jeannaea
  • Amphibians: BennyTrapp Hyla intermedia Italien
    BennyTrapp Hyla intermedia Italien
  • Amphibians: BennyTrapp Pelophylax shquipericus Montenegro
    BennyTrapp Pelophylax shquipericus Montenegro
  • Amphibians: Blue Mountains Tree Frog
    Blue Mountains Tree Frog
  • Amphibians: Brown Tree Frog
    Brown Tree Frog
  • Amphibians: Bufo americanus PJC
    Bufo americanus PJC
  • Amphibians: Bufo melanosticus
    Bufo melanosticus
  • Amphibians: Bufo periglenes
    Bufo periglenes
  • Amphibians: Bufotes balearicus female quadrat
    Bufotes balearicus female quadrat
  • Amphibians: Dendrobates azureus qtl
    Dendrobates azureus qtl
  • Amphibians: Dendropsophus microcephalus - calling male
    Dendropsophus microcephalus - calling male
  • Amphibians: Eastern banjo frog white bg
    Eastern banjo frog white bg
  • Amphibians: Ecnomiohyla rabborum
    Ecnomiohyla rabborum
  • Amphibians: Epipedobates tricolor dreistreifen baumsteiger
    Epipedobates tricolor dreistreifen baumsteiger
  • Amphibians: European Common Frog Rana temporaria
    European Common Frog Rana temporaria
  • Amphibians: Green Frog Rana clamitans Facing Left
    Green Frog Rana clamitans Facing Left
  • Amphibians: Litoria infrafrenata - Julatten
    Litoria infrafrenata - Julatten
  • Amphibians: Magnificent tree frog
    Magnificent tree frog
  • Amphibians: New England Tree Frog
    New England Tree Frog
  • Amphibians: Notophthalmus viridescens
    Notophthalmus viridescens
  • Amphibians: Pelophylax ridibundus JdP
    Pelophylax ridibundus JdP
  • Amphibians: Rana esculenta on Nymphaea edit
    Rana esculenta on Nymphaea edit
  • Amphibians: Rana platanera - Hypsiboas crepitans
    Rana platanera - Hypsiboas crepitans
  • Amphibians: Red eyed tree frog
    Red eyed tree frog
  • Amphibians: Red-eyed Tree Frog
    Red-eyed Tree Frog
  • Amphibians: Salamandra salamandra MHNT
    Salamandra salamandra MHNT
  • Amphibians: Aquatic Caecilian
    Aquatic Caecilian
  • Amphibians: Biju-Egg
    Biju-Egg
  • Amphibians: Caecilian
    Caecilian
  • Amphibians: Dermophis mexicanus
    Dermophis mexicanus
  • Amphibians: Eocaecilia BW
    Eocaecilia BW
  • Amphibians: Geotrypetes seraphini,
    Geotrypetes seraphini,
  • Amphibians: Ichthyophis davidi
    Ichthyophis davidi
  • Amphibians: Kupfer-Boulengerula-and-young
    Kupfer-Boulengerula-and-young
  • Amphibians: Lungless-species-high-res
    Lungless-species-high-res
  • Amphibians: Measey-Close-up-3
    Measey-Close-up-3
  • Amphibians: Measey-S-vittatus
    Measey-S-vittatus
  • Amphibians: Siphonops annulatus
    Siphonops annulatus
  • Amphibians: Alfredschmidti
    Alfredschmidti
  • Amphibians: Alpestris
    Alpestris
  • Amphibians: Alpine Newt - Ichthyosaura alpestris
    Alpine Newt - Ichthyosaura alpestris
  • Amphibians: Alpine Salamander, Salamandra atra 2
    Alpine Salamander, Salamandra atra 2
  • Amphibians: Alpine Salamander, Salamandra atra
    Alpine Salamander, Salamandra atra
  • Amphibians: Ambrosi’s Cave Salamander - Speleomantes ambrosii
    Ambrosi’s Cave Salamander - Speleomantes ambrosii
  • Amphibians: Ambystoma jeffersonianum
    Ambystoma jeffersonianum
  • Amphibians: Aurorae
    Aurorae
  • Amphibians: Common Newt - Lissotriton vulgaris
    Common Newt - Lissotriton vulgaris
  • Amphibians: Corsican Brook Newt - Euproctus montanus
    Corsican Brook Newt - Euproctus montanus
  • Amphibians: Corsican Fire Salamander, Salamandra corsica
    Corsican Fire Salamander, Salamandra corsica
  • Amphibians: Desmognathus ochrophaeus
    Desmognathus ochrophaeus
  • Amphibians: Euproctus
    Euproctus
  • Amphibians: Fire belly newt
    Fire belly newt
  • Amphibians: Gigliolii
    Gigliolii
  • Amphibians: Golden-striped Salamander - Chioglossa lusitanica
    Golden-striped Salamander - Chioglossa lusitanica
  • Amphibians: Great Crested Newt - Triturus cristatus
    Great Crested Newt - Triturus cristatus
  • Amphibians: Helversen’s Salamander - Lyciasalamandra helverseni
    Helversen’s Salamander - Lyciasalamandra helverseni
  • Amphibians: Iberian Newt - Lissotriton boscai
    Iberian Newt - Lissotriton boscai
  • Amphibians: Italian Cave Salamander - Speleomantes italicus
    Italian Cave Salamander - Speleomantes italicus
  • Amphibians: Italian Crested Newt - Triturus carnifex
    Italian Crested Newt - Triturus carnifex
  • Amphibians: Japanese Fire Bellied Newt
    Japanese Fire Bellied Newt
  • Amphibians: kaisers newt 2
    kaisers newt 2
  • Amphibians: kaisers newt
    kaisers newt
  • Amphibians: Kordestany Salamander (Neurergus microspilotus)
    Kordestany Salamander (Neurergus microspilotus)
  • Amphibians: Lanza’s Alpine Salamander, Salamandra lanzai
    Lanza’s Alpine Salamander, Salamandra lanzai
  • Amphibians: Marbled Newt - Triturus marmoratus
    Marbled Newt - Triturus marmoratus
  • Amphibians: Monte Albo Cave Salamander - Speleomantes flavus
    Monte Albo Cave Salamander - Speleomantes flavus
  • Amphibians: Montseny Brook Newt - Calotriton arnoldi
    Montseny Brook Newt - Calotriton arnoldi
  • Amphibians: Newt, Taricha torosa
    Newt, Taricha torosa
  • Amphibians: Northern Banded Newt - Ommatotriton ophryticus
    Northern Banded Newt - Ommatotriton ophryticus
  • Amphibians: Northern Spectacled Salamander - Salamandrina perspicillata
    Northern Spectacled Salamander - Salamandrina perspicillata
  • Amphibians: Palmate Newt - Lissotriton helveticus
    Palmate Newt - Lissotriton helveticus
  • Amphibians: Plethodon cinereus
    Plethodon cinereus
  • Amphibians: Plethodon wehrlei
    Plethodon wehrlei
  • Amphibians: Pseudotriton montanus montanus
    Pseudotriton montanus montanus
  • Amphibians: Pyrenean Brook Newt - Calotriton asper
    Pyrenean Brook Newt - Calotriton asper
  • Amphibians: Red Hills Salamander
    Red Hills Salamander
  • Amphibians: Rough skinned Newt in an alert, partially defensive posture
    Rough skinned Newt in an alert, partially defensive posture
  • Amphibians: Salamander fire 1
    Salamander fire 1
  • Amphibians: Sardinian Brook Newt - Euproctus platycephalus
    Sardinian Brook Newt - Euproctus platycephalus
  • Amphibians: Sette Fratelli Cave Salamander - Speleomantes sarrabusensis
    Sette Fratelli Cave Salamander - Speleomantes sarrabusensis
  • Amphibians: Sharp-ribbed Newt - Pleurodeles waltl
    Sharp-ribbed Newt - Pleurodeles waltl
  • Amphibians: Southern Marbled Newt - Triturus pygmaeus
    Southern Marbled Newt - Triturus pygmaeus
  • Amphibians: Speleomantes
    Speleomantes
  • Amphibians: Strinati’s Cave Salamander - Speleomantes strinatii
    Strinati’s Cave Salamander - Speleomantes strinatii
  • Amphibians: The axolotl
    The axolotl

The New Stuff: Photos from around the world !

Showing posts with label Amphibians. Show all posts
Showing posts with label Amphibians. Show all posts
Album photos Collection N#313  See the gallery

There are more than 6,000 species of amphibians living today. This animal class includes toads and frogs, salamanders and newts, and caecilians.

What are Amphibians? The Species of the World in Images
What are Amphibians? The Species of the World in Images
Almost all amphibians have thin, moist skin that helps them breathe. No other group of animals has this special skin. Most amphibians undergo a unique change from larvae to adults, called metamorphosis. All amphibians are ectotherms (what used to be called "cold-blooded"), a trait they share with invertebrates, fish, and reptiles.

Thin-skinned
Most amphibians have thin skin that is very permeable (allowing liquids and gases to pass through it easily). This is important for two reasons. First, it means that their skin helps them breathe, since oxygen passes easily through it. Second, it means that amphibians lose a lot of water through their skin. This is why most amphibians are found in moist or humid environments, where they can re-load their water reserves.

Leading a Double-Double Life
The word amphibian comes from the Greek word amphibios, meaning "a being with a double life." Some say their name refers to the fact that amphibians live in two places -- on land and in water. While dual residence is the rule for most amphibians, some species are strictly aquatic (water-dwelling) and some are strictly terrestrial (land-dwelling).

More accurately, amphibians' "double life" refers to two distinct life stages -- a larval stage and an adult stage. Most amphibians lay eggs, which hatch into larvae and undergo an amazing transformation (or metamorphosis) as they move from larval to adult stages. For instance, tadpoles (the larval stage of frogs) have gills and a tail -- features that enable them to live underwater. During metamorphosis, tadpoles lose their gills and develop lungs so they can breathe out of water. At the same time, they begin to grow limbs and lose their tails. The end result: adult frogs who spend much of their time on land.

Just the Right Temperature

Amphibians, like reptiles, are ectotherms. This means that they cannot produce sufficient internal heat to maintain a constant body temperature. Instead, amphibians' body temperature varies, depending on the surrounding temperature.

So what does this mean for amphibians? It means that they're responsible for regulating their own body temperature. When it's cold outside and they need to warm up, amphibians often bask in the sun to raise their body temperature. When it's too cold to even bask, amphibians may brumate. This means they're in a hibernation-like state, but they may have periods of wakefulness and even drink when necessary.

When it's hot outside, amphibians spend much of the time burrowing during the day, becoming active only at night. See the gallery

List All Amphibians
A- Caecilians
B- Frogs and Toads
  • American Bullfrog
  • American Toad
  • European Green Toad
  • Giant Marine Toad
  • Golden Mantella
  • Green-and-black Poison Dart Frog
  • Mountain Chicken
  • Panamanian Golden Frog
  • Plains Leopard Frog
  • Puerto Rican Crested Toad
  • Surinam Toad
  • Tomato Frog
  • Vietnamese Moss Frog
  • Waxy Tree Frog
  • White's Tree Frog
  • Wyoming Toad
C- Salamanders and Newts
  • Alligator Newt
  • Blue-tailed Fire-bellied Newt
  • Emperor Newt
  • Fire Salamander
  • Hellbender
  • Iberian Ribbed Newt
  • Marbled Salamander
  • Mudpuppy
  • Three-toed Amphiuma
  • Tiger Salamander
  • Western Lesser Siren
See the gallery

What are Amphibians? The Species of the World in Images

Album photos Collection N#313  See the gallery

There are more than 6,000 species of amphibians living today. This animal class includes toads and frogs, salamanders and newts, and caecilians.

What are Amphibians? The Species of the World in Images
What are Amphibians? The Species of the World in Images
Almost all amphibians have thin, moist skin that helps them breathe. No other group of animals has this special skin. Most amphibians undergo a unique change from larvae to adults, called metamorphosis. All amphibians are ectotherms (what used to be called "cold-blooded"), a trait they share with invertebrates, fish, and reptiles.

Thin-skinned
Most amphibians have thin skin that is very permeable (allowing liquids and gases to pass through it easily). This is important for two reasons. First, it means that their skin helps them breathe, since oxygen passes easily through it. Second, it means that amphibians lose a lot of water through their skin. This is why most amphibians are found in moist or humid environments, where they can re-load their water reserves.

Leading a Double-Double Life
The word amphibian comes from the Greek word amphibios, meaning "a being with a double life." Some say their name refers to the fact that amphibians live in two places -- on land and in water. While dual residence is the rule for most amphibians, some species are strictly aquatic (water-dwelling) and some are strictly terrestrial (land-dwelling).

More accurately, amphibians' "double life" refers to two distinct life stages -- a larval stage and an adult stage. Most amphibians lay eggs, which hatch into larvae and undergo an amazing transformation (or metamorphosis) as they move from larval to adult stages. For instance, tadpoles (the larval stage of frogs) have gills and a tail -- features that enable them to live underwater. During metamorphosis, tadpoles lose their gills and develop lungs so they can breathe out of water. At the same time, they begin to grow limbs and lose their tails. The end result: adult frogs who spend much of their time on land.

Just the Right Temperature

Amphibians, like reptiles, are ectotherms. This means that they cannot produce sufficient internal heat to maintain a constant body temperature. Instead, amphibians' body temperature varies, depending on the surrounding temperature.

So what does this mean for amphibians? It means that they're responsible for regulating their own body temperature. When it's cold outside and they need to warm up, amphibians often bask in the sun to raise their body temperature. When it's too cold to even bask, amphibians may brumate. This means they're in a hibernation-like state, but they may have periods of wakefulness and even drink when necessary.

When it's hot outside, amphibians spend much of the time burrowing during the day, becoming active only at night. See the gallery

List All Amphibians
A- Caecilians
B- Frogs and Toads
  • American Bullfrog
  • American Toad
  • European Green Toad
  • Giant Marine Toad
  • Golden Mantella
  • Green-and-black Poison Dart Frog
  • Mountain Chicken
  • Panamanian Golden Frog
  • Plains Leopard Frog
  • Puerto Rican Crested Toad
  • Surinam Toad
  • Tomato Frog
  • Vietnamese Moss Frog
  • Waxy Tree Frog
  • White's Tree Frog
  • Wyoming Toad
C- Salamanders and Newts
  • Alligator Newt
  • Blue-tailed Fire-bellied Newt
  • Emperor Newt
  • Fire Salamander
  • Hellbender
  • Iberian Ribbed Newt
  • Marbled Salamander
  • Mudpuppy
  • Three-toed Amphiuma
  • Tiger Salamander
  • Western Lesser Siren
See the gallery

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