Monocled cobra, Naja kaouthia
Naja kaouthia
is a highly venomous snake species
& commonly known as monocellate cobra or monocled cobra, native to South
Asia and Southeast Asia. It is found in China, Vietnam, India, Nepal,
Bangladesh, Cambodia, Laos, Malaysia, Bhutan, Thailand, and Myanmar. They are called Monocled cobras on
account its “O” shaped hood pattern, which is also denoted as the monocellate
hood pattern.
It is a medium-sized and
heavy-bodied snake having elongated cervical ribs that expand to form the hood
when they are alarmed.
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| Naja kaouthia (Image source: reptilesmagazine.com) |
The
coloration of dorsal surface in this species may vary from yellow to brown,
gray or blackish, with or without frayed or may have clear distinct cross
bands. Some snake individuals may be olivaceous to brownish or black over with
or without a yellow or orange colored, “O” shaped mark on their hood. On the
lower side of hood these snakes have black spot on either side, with one or two
black cross-bars on the ventral surface behind it while, rest of the belly is of
the same color as the dorsal body but a little faint. As age advances, the
snake becomes paler, wherein the adult is brownish or olivaceous.
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Scientific
classification
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Kingdom:
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Animalia
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Phylum:
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Chordata
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Class:
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Reptilia
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Order:
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Squamata
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Suborder:
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Serpentes
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Family:
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Elapidae
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Genus:
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Naja
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Species:
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kaouthia
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Binomial name
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Naja kaouthia Lesson, 1831
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Conservation status
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Least Concern
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Scalation
in these cobras has 25-31/ 19-21/ 17-15 scales dorsally while on the ventral
side they have 164-197 ventral scales and 43-61 subcaudal
scales. They also have more than one cuneate scale on either side. The frontal
scale is short and quadrangle.
It
is an oviparous species of snake where females lay clutch of 16-33 eggs.
Incubation periods in this species take about 55-73 days & egg were laid mostly
from January-March.
This species has been categorized
as Least Concern by IUCN on account of its large
distribution, tolerance, and its reported abundance. There are no major threats
have been reported about the species so far. It is also listed on CITES
Appendix II.
This cobra species is highly
adaptable snake species which has adapt to a wide range of habitats, from
natural to human-modified environments, at elevations of about 1000 m.asl.
These snakes prefer to live places having water resources such as agriculture
fields, mangroves, and swamps, but can also be sighted in grasslands,
scrublands, and forests.\
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| Naja kaouthia (Image source: reptile-database.reptarium.cz/) |
Naja
kaouthia was formerly considered as a subspecies of the Naja
naja (Spectacled Cobra). It is mainly a crepuscular or nocturnal
terrestrial species of snake, but it shows some arboreal ability if
needed. Generally prefer to hide in rodent holes, caves, mounds, piles,
cracks, agriculture fields and under fallen wooden logs. They can also be
found in scrublands,
grasslands, and forests as well as around human settlements. They feed on rodents,
small mammals, fish and occasionally other
snakes whereas; juveniles take amphibians mostly.
When encountered these snakes prefer to flee at
first but if cornered they lift their anterior portions of their
bodies, spread their hood, produce hiss sound loudly and try to bite in
aggression for defending themselves. It has been recorded recently that some individuals
of the monocled cobra have the potential of spitting venom. It contains the neurotoxins in its venom which leads
to symptoms such as localized swelling at the bite side, drowsiness, neurological problems (progressive
paralysis of the nervous system, respiratory paralysis and death due to
asphyxia) and
muscle issues (tissue necrosis) in victims after being bitten.
Literature Cited:
Cantor,
T. (1839). Naja larvata. Proceedings of the Zoological Society of London.
7: 32–33.
Chan-ard,
T., Parr, J.W.K. and Nabhita, B.J. (2015). A field guide to the reptiles of
Thailand. Oxford University Press, NY, 352 pp. [see book reviews by Pauwels
& Grismer 2015 and Hikida 2015 for corrections] - get paper here
Chan-ard,T.,
Grossmann,W., Gumprecht, A. and Schulz, K. D. (1999). Amphibians and Reptiles
of peninsular Malaysia and Thailand - an illustrated checklist [bilingual
English and German]. Bushmaster Publications, Würselen, Gemany, 240 pp. [book
review in Russ. J. Herp., 7: 87] - get
paper here
Chanhome,
L, Jintkune, P., Wilde, H., Cox, M.J. (2001). "Venomous snake
husbandry in Thailand" (PDF). Wilderness and Environmental
Medicine. 12: 17–23. doi:10.1580/1080-6032(2001)012[0017:vshit]2.0.co;2.
Charles,
C. 2016. Recent reptiles records from Kaeng Krachan National Park, Thailand
Seavr, 117-120 - get paper here
Cox,
M.J., Van, D., Paul, P., Jarujin, N. and Thirakhupt, K. (1998). A Photographic
Guide to Snakes and Other Reptiles of Peninsular Malaysia, Singapore and
Thailand. Ralph Curtis Publishing, 144 pp.
Das,
A., Uttam, S., Murthy, B.H.C.K., Santanu, D. and Sushil, K.D. (2009). A
herpetofaunal inventory of Barail Wildlife Sanctuary and adjacent regions,
Assam, north-eastern India. Hamadryad, 34 (1): 117 – 134
Das,
I. (2012). A Naturalist's Guide to the Snakes of South-East Asia: Malaysia,
Singapore, Thailand, Myanmar, Borneo, Sumatra, Java and Bali. Oxford John
Beaufoy Publishing – get paper here
Das,
S. and Amit, B. (2017). Notes on the breeding ecology of monocled cobras (Naja
kaouthia) from areas adjacent to Sundarban, India Herpetological Bulletin
(140): - get paper here
Frömberg,
C. (2007). Haltung und Zucht der Suphan-Kobra, Naja kaouthia
("suphanensis") (Lesson, 1831). Ophidia, 1(2) - get
paper here
Geissler,
P., Hartmann, T., Ihlow, F., Neang T., Seng R., Wagner, P. and Bohme, W. (2019).
Herpetofauna of the Phnom Kulen National Park, northern Cambodia—An annotated
checklist. Cambodian Journal of Natural History 2019 (1): 40–63 - get paper here
Geissler,
P., Truong, Q.N., Nikolay, A.P. and Wolfgang, B. (2011). New records of snakes
from Cat Tien National Park, Dong Nai and Lam Dong provinces, southern Vietnam.
Bonn zoological Bulletin 60, (1): 9-16 - get paper here
Gray.
J. E. (1834). Illustrations of Indian Zoology, chiefly selected from the
collection of Major - General Hardwicke. London. 2 (1833-1834):263 pp 95 plates
- get
paper here
Grismer,
L.L, Thy, N., Thou, C., Perry, L., Wood, J., Jamie, R., Oaks, J.H., Jesse, L.,
Grismer, T.R.S. and Timothy, M.Y. (2008). Additional amphibians and reptiles
from the Phnom Samkos Wildlife Sanctuary in Northwestern Cardamom Mountains,
Cambodia, with comments on their taxonomy and the discovery of three new
species. Raffles Bulletin of Zoology, 56 (1): 161-175 - get
paper here
Grismer,
L.L., Neang, T., Chav, T. and Grismer, J.L. (2008). Checklist of the amphibians
and reptiles of the Cardamom region of Southwestern Cambodia. Cambodian
Journal of Natural History, 1: 12–28 - get paper here
Grossmann,
W. and Tillack, F. (2001). Bemerkungen zur Herpetofauna des Khao Lak, Phang
Nga, thailändische Halbinsel. Teil II: Reptilia: Serpentes; Testudines;
Diskussion. Sauria, 23 (1): 25-40 - get
paper here
Gumprecht,
A. (2009). Über das Vorkommen der Monokel-Kobra (Naja kaouthia) in
Nord-Thailand. Sauria, 31 (2): 60-62 - get
paper here
Hallmen,
M. (2005). Farb- und Zeichnungszuchten in der Terraristik. Reptilia (Münster)
10 (55): 16-22 - get paper here
Hallmen,
M. (2006). Selective Breeding for color and pattern. Reptilia (GB) (44):
12-18 - get
paper here
http://reptile-database.reptarium.cz/species?genus=Naja&species=kaouthia
https://en.wikipedia.org/wiki/Monocled_cobra
Jackson,
K. (2002). Post-ovipositional development in the Monocled Cobra, Naja
kaouthia, (Serpentes: Elapidae). Zoology, 105 (4):203-214
Kästle,
W., Rai, K. and Schleich, H.H. (2013). Field Guide to Amphibians and Reptiles
of Nepal. ARCO-Nepal e.V., 625 pp. - get
paper here
Kyi,
S.W. and Goerge, R.Z. (2003). Unusual foraging behaviour of Naja kaouthia at
the Moyingye Wetlands Bird Sanctuary, Myanmar. Hamadryad, 27 (2):
265-266
Mahony,
S., Kamrul, M.H., Md. Mofizul, K., Mushfiq, A. and Md. Kamal H. (2009). A
catalogue of amphibians and reptiles in the collection of Jahangirnagar
University, Dhaka, Bangladesh. Hamadryad, 34 (1): 80–94 - get
paper here
Majumder,
J., Partha, P.B., Koushik, M., Chiranjib, D. and Basant, K.A. (2012).
Documentation of herpetofaunal species richness in Tripura, Northeast India. NeBIO,
3 (1): 60-70 - get paper here
Murthy,
T.S.N. (2010). The reptile fauna of India. B.R. Publishing, New Delhi, 332 pp.
Nath,
A., Hilloljyoti, S. and Das, A. (2011). Snakes of Bongaigaon Municipality Area,
Assam, India. Reptile Rap, (13): 9-13 - get paper here
Onn,
C.K.., Lee, L., Grismer, D., Sharma, S., Daicus, B. and Norhayati, A. (2009).
New herpetofaunal records for Perlis State Park and adjacent areas. Malayan
Nature Journal, 61 (4):255 - 262
Pandey,
D.P. (2018). New records of snakes from Chitwan National Park and vicinity,
Central Nepal. Herpetology Notes, 11: 679-696 - get
paper here
Purkayastha,
J. (2018). Urban biodiversity: an insight into the terrestrial vertebrate
diversity of Guwahati, India. Journal of Threatened Taxa, 10(10):
12299–12316 - get
paper here
Santra,
V. and Wüster, W. (2017). Naja kaouthia (Monocled Cobra) Behavior / spitting. Herpetological
Review, 48 (2): 455-456 - get
paper here
Smith,
M. A. (1943) The Fauna of British India, Ceylon and Burma, Including the
Whole of the Indo-Chinese Sub-Region. Reptilia and Amphibia. Volume “III”
(Serpentes). Taylor and Francis, London.
Status
of Naja kaouthia". CITES species database. CITES. Retrieved 12 December
2019.
Stuart,
B. and Wogan, G. (2012). "Naja kaouthia". The IUCN Red List of
Threatened Species. IUCN. 2012:
e.T177487A1488122. doi:10.2305/IUCN.UK.2012-1.RLTS.T177487A1488122.en.
Thomas,
E. (1970). Kämpfe junger Brillenschlangen (Naja naja kaouthia) Salamandra,
6 (1-2): 52-54 - get paper here
Tshewang,
S. and Letro, L. (2018). The herpetofauna of Jigme Singye Wangchuck National
Park in central Bhutan: status, distribution and new records. Journal of
Threatened Taxa, 10(11): 12489–12498; - get paper here
Wallach,
V., Kenneth, L.W., Jeff, B. (2014). Snakes of the World: A Catalogue of Living
and Extinct Species. [type catalogue] Taylor and Francis, CRC Press, 1237 pp.
Wallach,
V., Wüster, W. and Broadley, D.G. (2009). In praise of subgenera: taxonomic
status of cobras of the genus Naja Laurenti (Serpentes: Elapidae). Zootaxa,
2236: 26–36 - get
paper here
Wüster,
W. (1996). Taxonomic changes and toxinology: Systematic revisions of the
asiatic cobras (Naja naja complex). Toxicon, 34 (4): 399-406
Wüster,
W. (1998). The cobras of the genus Naja in India. Hamadryad, 23 (1):
15-32.
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