|
| FACT FILE: |
| Local
Name: |
Unknown |
| Family: |
RANIDAE |
| Genus: |
Tomopterna |
| Status: |
Locally
Common |
| Warning: |
None |
|
|
|

Photo Credit: Dr. Muhammad Sharif Khan | |
Description
and Biology:
This
anuran is short, stocky, and toadlike; head broader than long, top flat;
first finger longer than second, tips swollen; hind limbs short,
tibiotarsal articulation reaching the axilla; toes half to one fourth
webbed. Inner metatarsal tubercle long, compressed, flat, shovel-shaped;
skin smooth, slightly varicose, with feeble longitudinal dorsal folds;
tympanum distinct, as large as eye.
Color:
Dorsum
olive golden, with a light yellow median line; a well marked large
golden ocellus on shoulder on each side, continuing obliquely along
flanks. Indistinct yellowish bars on limbs and jaws. Sometimes dorsum is
faintly mottled. Ventrum cream, gular region black in breeding males.
The eyes
of juvenile Tomopterna breviceps are surrounded by a dark circle.
Its broad head is reddish.
Tadpole:
The
tadpoles are pinkish brown with dark brown spottings. The tadpoles have
stout body, the snout is high broad and rounded. The oral disc is
anterior, the fringe of oral papillae does not extend on anterior and
posterior labium. The posterior labium double row of papillae. Labial
tooth row formula is 2(2)/3. The beak is narrow and finely serrated. The
lanceolate tail has dorsal fin broader than the ventral. Body is light
brown with large dark brown blotches, ventrum grayishwhite with fine
brown dottings. The tadpole is found in small ponds and side pools along
streams.
Total
length of the tadpole 34-36 mm, tail 25-26 mm..
Biology:
This
frog is
essentially nocturnal, emerging at dusk from of its burrow which it
excavates in soft sandy soil with the help of its broad shovel-shaped
inner metatarsal tubercle. At dusk these frogs swarm fields around
Manshera city. It is insectivorous, and is often seen devouring
centipedes and millipedes which are common in its habitat.
Breeding
season starts with the first showers of summer monsoons, when males
gather in the shallow marginal waters of large ponds, spaced well apart
from each other. The call is a quickly repeated "Awang, awang,
awang" uttered 5 to 7 times in a burst.
The same
habitat is a potential breeding site for other local amphibians, e.g., Bufo
stomaticus, Euphlyctis cyanophlyctis, Holobatrachus tigerinus and
Microhyla ornata. Occasionally, a relatively agile male of B.
stomaticus or E.cyanophlyctis pairs with a Tomopterna breviceps
(regardless of sex) which being docile, offers little or no resistance;
the pair soon separates.
Eggs of Tomopterna
breviceps are large, enclosed in two envelopes of jelly, and laid in
small batches which float and adhere to the grass blades.
Tomopterna
breviceps has a remarkable resemblance to the burrowing frogs of the
genus Uperodon.
Habitat,
Distribution
and Status:
This burrowing frog inhabits
relatively humid parts of Pakistan and is found in abundance along the
Himalayan foothills in the northwest.
The burrowing frog is
distributed throughout India, Bangladesh, Nepal, Myanmar and Sri Lanka.
In Pakistan it is reported from the Himalayan foothills, and extends
into the Potwar Tableland. It has spotty distribution in the riparian
system of Punjab (Khan 1976). Its colonies have been reported in
desolate parts of the Cholistan Desert (Khan 1985a). Around Karachi, it
is collected from the Hab and Malir River Valleys (Minton 1962, 1966).
Possible
reasons for amphibian decline:
General
habitat alteration and loss
Habitat modification from deforestation, or logging related activities
Urbanization
Prolonged drought
Habitat fragmentation
Local pesticides, fertilizers, and pollutants
Long-distance pesticides, toxins, and pollutants
Predators (natural or introduced)
|

|
|
Tomopterna
breviceps ( ) |
|
Map
Credit: Dr. Muhammad Sharif Khan |
References
and Credits:
-
Written
by M. S. Khan ([email protected]), Herp Lab, Rabwah, Pakistan
Edited by vtv (2002-05-24 )
-
AmphibiaWeb
database, University of California at Berkeley
( http://elib.cs.berkeley.edu/aw/index.html
)
-
Nausherwan
Ahmed