Mandalay Spitting Cobra
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The Mandalay spitting cobra (''Naja mandalayensis''), also called the Burmese spitting cobra or Mandalay cobra, is a species of
spitting cobra A spitting cobra is any of several species of cobras that can defensively spray a toxic secretion - functioning as both a venom (that can be injected via a wound) and a toxungen (that can be sprayed on the target surface) - from their fangs in ...
endemic to the dry zone in central Myanmar.


Etymology

''Naja mandalayensis'' was first described by herpetologists
Wolfgang Wüster Wolfgang Wüster (born 1964) is a herpetologist and Reader in zoology at Bangor University, UK. Wüster attained his bachelor's degree at the University of Cambridge in 1985 and his doctorate at the University of Aberdeen in 1990. His primary a ...
and
Joseph Bruno Slowinski Joseph Bruno Slowinski (November 15, 1962 – September 11, 2001) was an American herpetologist who worked extensively with elapid snakes. Research and career Slowinski was born on November 15, 1962 in New York City, New York. He attained his bac ...
in 2000. The
generic Generic or generics may refer to: In business * Generic term, a common name used for a range or class of similar things not protected by trademark * Generic brand, a brand for a product that does not have an associated brand or trademark, other ...
name ''naja'' is a Latinisation of the
Sanskrit Sanskrit (; attributively , ; nominally , , ) is a classical language belonging to the Indo-Aryan branch of the Indo-European languages. It arose in South Asia after its predecessor languages had diffused there from the northwest in the late ...
word () meaning "cobra". The
specific Specific may refer to: * Specificity (disambiguation) * Specific, a cure or therapy for a specific illness Law * Specific deterrence, focussed on an individual * Specific finding, intermediate verdict used by a jury in determining the fina ...
epithet ''mandalayensis'' is Latin and refers to the city of
Mandalay Mandalay ( or ; ) is the second-largest city in Myanmar, after Yangon. Located on the east bank of the Irrawaddy River, 631km (392 miles) (Road Distance) north of Yangon, the city has a population of 1,225,553 (2014 census). Mandalay was fo ...
, which is a major city within the range of Naja mandalayensis.


Description

This species of cobra is medium in length, and heavy bodied. The average length of an adult ranges from ; they can grow to . The head is elliptical, depressed, slightly distinct from the neck with a short, rounded snout and large nostrils. The body is compressed dorsoventrally and subcylindrical posteriorly. Its scales are smooth and strongly oblique. The eyes are moderate in size with round pupils. The body of this species is yellowish-brown to dull brown, with darker brownish mottling. The belly is pale with some dark speckling. Specimens are often dark under the chin and throat, followed by a more pale clear area, then by 2 or 3 dark bands across the venter of the hood. This species has no obvious markings on dorsum of the hood, although a spectacle-shaped hood mark may be present, especially in some juveniles. Like other spitting cobra species, they possess a pair of fixed front upper fangs that are highly modified for "spitting" venom.


Geographic distribution

This species is endemic to the central dry zone of Myanmar, spanning the
Mandalay Mandalay ( or ; ) is the second-largest city in Myanmar, after Yangon. Located on the east bank of the Irrawaddy River, 631km (392 miles) (Road Distance) north of Yangon, the city has a population of 1,225,553 (2014 census). Mandalay was fo ...
, Magway, and
Sagaing Sagaing (, ) is the former capital of the Sagaing Region of Myanmar. It is located in the Irrawaddy River, to the south-west of Mandalay on the opposite bank of the river. Sagaing with numerous Buddhist monasteries is an important religious and ...
Divisions. The central dry zone is a well defined area with a characteristic climate, and an extent of less than 20,000 km2. The few known records of this snake have been taken from areas throughout this general region, and it has an estimated range of approximately 18,500 km2 based on recorded data.


Habitat

This species occurs in the central dry zone of Myanmar, an area that receives less than of rain annually. The area is made up of
acacia ''Acacia'', commonly known as the wattles or acacias, is a large genus of shrubs and trees in the subfamily Mimosoideae of the pea family Fabaceae. Initially, it comprised a group of plant species native to Africa and Australasia. The genus na ...
and stunted
dipterocarpaceae Dipterocarpaceae is a family of 16 genera and about 695 known species of mainly tropical lowland rainforest trees. The family name, from the type genus ''Dipterocarpus'', is derived from Greek (''di'' = two, ''pteron'' = wing and ''karpos'' = fru ...
savannas, although the area is being intensively utilized for agricultural purposes. Mandalay spitting cobra specimens have been collected in dry forests and dry acacia habitat.


Behaviour and diet

This species of cobra is predominantly nocturnal, hunting at dusk or night. They spend the daylight hours being mostly stationary or basking in the sun. The spitting behaviour of this species is said to be similar to that of the
Indochinese spitting cobra The Indochinese spitting cobra (''Naja siamensis'') ( th, งูเห่า, pronounced: nguu hao) also called the Thai spitting cobra, Siamese spitting cobra, is a species of spitting cobra found in Southeast Asia. Description This is a medium ...
(''N. siamensis'') based on anecdotal observations made by herpetologists. Mandalay spitting cobras are alert and defensive snakes, quickly raising their forebodies and spreading a broad hood when faced with a threat. Very little provocation is required to cause them to spit. The venom can be efficiently expelled at least in distance. In addition to spitting, this species will often also charge forward towards the threat while hissing loudly. It preys mainly on
toads Toad is a common name for certain frogs, especially of the family Bufonidae, that are characterized by dry, leathery skin, short legs, and large bumps covering the parotoid glands. A distinction between frogs and toads is not made in scientif ...
and
frog A frog is any member of a diverse and largely Carnivore, carnivorous group of short-bodied, tailless amphibians composing the order (biology), order Anura (ανοὐρά, literally ''without tail'' in Ancient Greek). The oldest fossil "proto-f ...
s but will also take other snakes, small
mammal Mammals () are a group of vertebrate animals constituting the class Mammalia (), characterized by the presence of mammary glands which in females produce milk for feeding (nursing) their young, a neocortex (a region of the brain), fur or ...
s and occasionally even
fish Fish are aquatic, craniate, gill-bearing animals that lack limbs with digits. Included in this definition are the living hagfish, lampreys, and cartilaginous and bony fish as well as various extinct related groups. Approximately 95% of li ...
.


Venom

Nothing is known about the venom of this particular species. However, as a species of spitting cobra the venom likely has a cytotoxic and post-synaptic neurotoxic properties.


References


External links


Encyclopedia of Life
{{Taxonbar, from=Q2711450 Naja Reptiles of Myanmar Venomous snakes Reptiles described in 2000