BRAZIL’S FAUNA
(Page prepared by a nature’s observer)Frogs and Toads (Order Anura)
Habitat and Distribution
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The
anure amphibians are distributed for almost around all the globe and in
almost all ecosystems. But in the tropical forests we can find the biggest
diversity of the known species. From more than 4.500 described species,
around 45% occurs in the Tropical America.
The absence of recent gladiations, the
climatic and vegetation stability, the big complexity of the environment
and the big quantity of precipitation are factors that make equatorial and
subtropical forests favorable environment for the development of the
biggest number of species ( Duellman & Trub 1986). This way, the
Brazilian forested regions (Amazonian Rainforest and Atlantic Forest),
have been deserving bigger studies because of the exuberance of its
biological diversity.
The majority of anures need water for
reproducing and high humidity level for surviving, in a way that in the
humid ecosystems as in the forests, is where they find the most favorable
environment for living. But the anures have facility of adaptation to
diverse pluvial and temperature conditions, needing most of the times of
small humidity for surviving, what makes possible finding them, also, in
arid regions as scrub savannas, because they are capable of living in the
most extreme climatic conditions, sometimes passing months without eating
and in hibernation state.
They live in variable altitudes, since
coastal shoals to altitude camps of 2.400 meters, as in Itatiaia-
RJ, where we have found Melanophryniscus
moreirae ( Miranda-Ribeiro, 1920 ) .
In the soil of the Atlantic Forest we can
find, for example, Eleuthodactylus parvus , binotatus e geutheri, além de
B. ephippium and Procerathropes boeie .
In the lakes, ponds and
swamps we can find the hylidae, as Hyla faber , Hyla minuta, Hyla
prasina, Hyla albopunctata, among some others.
As already said, for all Brazil we can
find the anures; in the shoals, in the marine rock hillsides, in the
swamps, in the atlantic wood, in the savanaahs, scrub savannas, fields,
altitude fileds and Amazonian Rainforest.
In general the anures have reduced
mobility, dismissing little meters from the place where they were born.
This is allied to the big climatic and morphological diversity of the
country, allows the big occurrence of endemism in the country (species
that just occur in a certain place or environment). On the other hand,
because of the factor of big adaptability allied to the factors that are
still unknown, some anures are distributed for most all over Brazil, as
the Hyla minuta.
Consulted Bibliography
DUELLMAN, W.E.
& TRUEB, L. 1986. Biology of amphibians. McGraw Hill Book Co., New
York. 670 pp.
MIRANDA-RIBEIRO, A., 1920,
Os Brachycephalideos do Museu Paulista (com três espécies novas). Rev.
Mus. Paulista, 12:307-315, 3 pls.
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