Other Amphibian of the Week

Dwarf Waterdog (Necturus punctatus)

waterdog
photo by Todd Pierson

least concern
Common Name: Dwarf Waterdog
Scientific Name: Necturus punctatus
Family: Proteidae
Locations: United States – Georgia, North Carolina, South Carolina, and Virginia
Size: 7.5 inches

The Dwarf Waterdog is the smallest species of genus Necturus. Like all members of the species, they are aquatic and keep their gills throughout their life. Not much is known about the reproductive behaviors of the waterdog but it is believed they mate in winter. The eggs are later laid in spring from March to May. The females lay around 15 to 50 eggs. Nothing is known about nesting sites, how long it takes the eggs to hatch, or any courtship behaviors.

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tree frog thursday

Mountain Chorus Frog (Pseudacris brachyphona)

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photo by Todd Pierson

least concern
Common Name: Mountain Chorus Frog
Scientific Name: Pseudacris brachyphona
Family: Hylidae – Tree Frog family
Locations: United States – Alabama, Georgia, Kentucky, Mississippi, North Carolina, Ohio, Tennessee, West Virginia, and Pennsylvania
Size: 1.25 inches

The Mountain Chorus Frog is found in and around the Appalachian Mountains in the eastern United States. The frog starts breeding when they wake up from their hibernation generally around late February and early March. The males call sounds like reeking sound. Females can lay 300 to 1500 eggs in a clutch. No parental care has been reported in the Mountain Chorus Frog. The eggs hatch in 7-10 days and the tadpoles undergo metamorphosis in a month or two. The Mountain Chorus Frog is a terrestrial species of tree frog. They spend most of their time on the ground.

Toad Tuesday

Coastal Plains Toad (Incilius nebulifer)

coastalplainstoad
photo by Kevin Young

least concern
Common Name: Coastal Plains Toad
Scientific Name: Incilius nebulifer
Family: Bufonidae – True Toad Family
Location: Mexico and the United States
US Locations: Texas, Louisiana, and Mississippi
Size: 5 inches

The Coastal Plains Toad used to be part of the Gulf Coast Toad (Incilius valliceps) species but was split off due to genetic testing. It is still kinda confusing even though it happened over 20 years ago.

The spring and summer rains bring the males out to start calling to attract females. They will breed in a variety of still-water sources such as ponds, wetlands, and roadside ditches. Females can lay up to 20,000 eggs in a clutch and have been observed to lay two clutches in extended breeding seasons. Neither the male or female show any parental care towards the eggs. The eggs will hatch in a day or two and the tadpoles will complete metamorphosis in 20 to 30 days.

The Coastal Plains Toad has adapted alright to the urbanization of their habitat. They have been observed to hide under concrete slabs and in cracks and holes of sidewalks.

Other Amphibian of the Week

Varagua Caecilian (Gymnopis multiplicata)

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photo by Todd Pierson

least concern
Common Name: Varagua Caecilian
Scientific Name: Gymnopis multiplicata
Family: Dermophiidae
Locations: Costa Rica, Guatemala, Honduras, Nicaragua, and Panama
Size: 2 inches

Like most caecilian species, the Varagua Caecilian is a mysterious species of caecilian that not much is known about. They are a fossorial species, spending most of their time underground, even up to 3 meters deep. The Varagua Caecilian is thought to be viviparous, giving birth to live young. The offspring feed off the nutrient secretions from the mother after they use up the yolk while still inside of the mother. The offspring complete metamorphosis while still inside the mother. The mothers are pregnant for 11 months before giving birth.

 

 

Frog of the Week

Reticulated Glass Frog (Hyalinobatrachium valerioi)

glassfrog
least concern
Common Name: Reticulated Glass Frog, Valerio’s Glass Frog, La Palma Glass Frog, and Ranita de Vidrio
Scientific Name: Hyalinobatrachium valerioi
Family: Centrolenidae – Glass Frog Family
Locations: Colombia, Costa Rica, Ecuador, and Panama
Size: 1 inch

Like most Glass Frogs from the family Centrolenidae, the Reticulated Glass Frog is a highly arboreal species of frogs, rarely leaving the trees that are their home. They will even lay their eggs on leaves overhanging streams. Breeding for the Reticulated Glass Frog takes place during the wet season. Males will carve out territories and start calling. If another male enters the territory, the male will send out calls to tell the intruder to go away. If the intruder does not leave, a fight will break out that could lead to death. After mating, the female will lay around 30 eggs on the underside of leaves overhanging streams. She will then leave the eggs but the males will protect and guard them from enemies such as wasps. They will even pee on them to keep them moist. Parental care is not often seen in glass frogs.

The Reticulated Glass Frog can be found in the pet trade. They can be hard to take care of so you shouldn’t get one if you are a beginner to frogs. They are nocturnal so you won’t see them much during the day since they hide under leaves. No more than one male can be housed together at a time or they could fight and kill each other. The Reticulated Glass Frog doesn’t have the longest lifespan, averaging between 5-8 years in captivity, obviously with better care maybe longer. If you still want to buy one, make sure it is captive bred, to help protect wild ones. Also never release any pet frog into the wild if you can no longer take care of it.

Toad Tuesday

Oak Toad (Anaxyrus quercicus)

b_quercicus_usgs
photo by the USGS

least concern
Common Name: Oak Toad
Scientific Name: Anaxyrus quercicus
Family: Bufonidae – True Toad Family
Locations: United States – Alabama, Florida, Georgia, Louisiana, Mississippi, North Carolina, South Carolina, and Virginia
Size: 1.25 inches max

The Oak Toad is the smallest toad in North America, not even reaching 2 inches when it is fully grown. They are also interesting in the fact that they are mostly diurnal, active during the day, while most true toads in North America are nocturnal, active during the night.

Breeding takes place from April to September, depending on the arrival of the heavy, warm rains. The mating call of the males sound like baby chickens. While the Oak Toad is small, the female can lay up to 700 eggs. Tadpoles hatch from their eggs in a day and fully undergo metamorphosis in a month or two.

Other Amphibian of the Week

Great Crested Newt (Triturus cristatus)

photo by Rainer Theuer

least concern
Common Name: Northern Crested Newt, Great Crested Newt, and Warty Newt
Scientific Name: Triturus cristatus
Family: Salamandridae
Locations: Austria, Belarus, Belgium, Bulgaria, Czech Republic, Denmark, Estonia, Finland, France, Germany, Latvia, Liechtenstein, Lithuania, Luxembourg, Moldova, Netherlands, Norway, Poland, Romania, Russia, Serbia, Slovakia, Sweden, Switzerland, Ukraine, and the United Kingdom
Size: 6 inches

The Great Crested Newt is named after the crested that males grow during breeding season. Breeding takes place during the spring to summer when the newts wake up from their hibernation. The newts move back to the ponds where they hatched to breed. Females lay around 200 eggs during a breeding season. After breeding, the newts move back to land and the males lose their crests. They are often found under rocks and logs.

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photo by Maciej Bonk

While the Great Crested Newt is listed as least concern by the International Union for the Conservation of Nature (IUCN), their populations are declining fast. The European Union has listed the Great Crested Newt as the protected species to help save them. The main reason for their decline is believed to be habitat loss due to development for urban areas.

Frog of the Week

Pig Frog (Lithobates grylio)

pig_frog_profile.jpg
photo by the USFWS

least concern
Common Name: Pig Frog
Scientific Name: Lithobates grylio
Family: Ranidae – True Frog Family
Locations: United States – Alabama, Florida, Georgia, Louisiana, Mississippi, South Carolina, and Texas
Introduced Locations: Bahamas, China, and Puerto Rico.
Size: 6.5 inches (165 mm)

The Pig Frog is named after the male’s mating call that sounds like a pig grunt. Like most frogs in North America, the Pig Frog breeds from early spring to late summer. Generally, the frog breeds in permanent bodies of water such as ponds, lakes, and swamps but have been known to breed in ephemeral ponds, streams, and roadside ditches. Females can lay up to 15,000 eggs during a breeding season. The Pig Frog is mostly aquatic, only coming to the edge of bodies of water.

New Species

New Species and Genus from the Western Ghats of India

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A new species of frog was discovered in the Western Ghats of India. The Western Ghats is an incredible place to go frogging. There are three known families of frogs that are only found there and hundreds of different species of frogs. Not only was this new species discovered, it has been put into a new genus by itself and its own new subfamily.

Researchers decided on the common name  of the new frog as the Starry Dwarf Frog (Astrobatrachus kurichiyana) after the light spots on their body that resemble stars. The genus name also reflects that stars,  astro meaning star in Greek and batrachus meaning frog. The species epithet, Kurichiyana, is the name of the local tribal community living near the frogs. The Starry Dwarf Frog is a member of the family Nyctibatrachidae, a fairly new family. The family is only found in India and Sri Lanka. The new subfamily is named Astrobatrachinae.

The conservation status of the frog is currently unknown. Not much really is known about the Starry Dwarf Frog. What is known is that it is mainly terrestrial and nocturnal.  They are a small species of frogs, only growing to an inch long.

Read the full scientific article at https://peerj.com/articles/6457/

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Other Amphibian of the Week

Misty Salamander (Hynobius nebulosus)

KONICA MINOLTA DIGITAL CAMERA
photo by Henk Wallays

least concern
Common Name: Misty Salamander, Clouded Salamander
Scientific Name: Hynobius nebulosus
Family: Hynobiidae – Asiatic Salamander Family
Location: Japan
Size: 5 inches total length

The Misty Salamander is found only in Japan on the islands of Honshu, Shikoku, Kyushu, and on Ikishima. During the mating season, males stake out territory and will defend them from other males. This defense includes biting and tail wagging. If a male salamander can’t get a decent territory, they will become what scientists call a sneaker. These sneakers will wait around a different males territory until the other male is mating with female. The sneaker tries to sneak in and and fertilize the female’s eggs.