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Seekor ular baru yang agak tipis dan panjang merangkak keluar dari salah satu hotspot keanekaragaman hayati bumi

Sebuah tim ilmuwan Ekuador dan Amerika telah menemukan spesies baru , milik kelompok neotropical arboreal ( penghuni pohon )  : ular blunt headed vine snake  , dari hotspot keanekaragaman hayati Choco di barat laut Ekuador . Data DNA menunjukkan bahwa kerabat terdekat dari spesies baru jugs tinggal di sisi lain dari Andes ....read more 

A rather thin and long new snake crawls
out of one of Earth's biodiversity hotspots

Date:

November 27, 2012

Source:

Pensoft Publishers

Summary:

A team of Ecuadorian and American scientists have discovered a new species,
belonging to a neotropical group of remarkably long arboreal (tree-dwelling)
snakes: the blunt-headed vine snakes, from the Choco biodiversity hotspot in
northwestern Ecuador. DNA data suggest that the closest relative of the new
species lives on the other side of the Andes.

...............

Field and laboratory work by a group of zoologists led by Omar
Torres-Carvajal from Museo de Zoología QCAZ, Pontificia Universidad Católica
del Ecuador, has resulted in the discovery of a new species of blunt-headed
vine snake from the Chocoan forests in northwestern Ecuador. This region is
part of the 274,597 km2 Tumbes-Chocó-Magdalena hotspot that lies west of the
Andes.

The study was published in the open access journal ZooKeys.

Blunt-headed vine snakes live in an area comprising Mexico and Argentina, and
are different from all other New World snakes in having a very thin body,
disproportionately slender neck, big eyes, and a blunt head. They live in trees
and hunt frogs and lizards at night. The new species described by
Torres-Carvajal and his collaborators was named Imantodes chocoensis and
increases the number of species in this group of snakes to seven.

Snakes collected as far back as 1994 and deposited in several Ecuadorian
and American natural history museums were also examined. The authors were soon
surprised with an interesting discovery. Some individuals from the Ecuadorian
Chocó lacked a big scale on their face that is present in all other
blunt-headed vine snakes from the New World. Other features, as well as DNA
evidence, indicate that these Chocoan snakes actually belong to a new species.
DNA data also suggest that its closest relative is a species that inhabits the
Amazon on the other side of the Andes.

'One possible explanation for the disjunct distribution between the new
species and its closest relative is that the uplift of the Andes fragmented an
ancestral population into two, each of which evolved into a different species,
one in the Chocó region and the other in the Amazon' said Dr Torres-Carvajal.







Story Source:

The above story is based on materials provided
by Pensoft Publishers. Note: Materials may be edited
for content and length.







Journal Reference:

1.   
Omar Torres-Carvajal, Mario Yanez, Diego Quirola, Eric N. Smith, Ana
Almendáriz. A new species of blunt-headed vine snake (Colubridae,
Imantodes) from the Chocó region of Ecuador. ZooKeys, 2012; 244
(0): 91 DOI:10.3897/zookeys.244.3950

http://www.sciencedaily.com/releases/2012/11/121127101536.htm

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