Micrurus lemniscatus

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Micrurus lemniscatus
Micrurus lemniscatus.jpg
Micrurus lemniscatus head.jpg
Scientific classification OOjs UI icon edit-ltr.svg
Kingdom: Animalia
Phylum: Chordata
Class: Reptilia
Order: Squamata
Suborder: Serpentes
Family: Elapidae
Genus: Micrurus
Species:
M. lemniscatus
Binomial name
Micrurus lemniscatus
Micrurus lemniscatus Map.jpg
Synonyms [2]

Micrurus lemniscatus, commonly known as the South American coral snake, is a species of venomous snake in the family Elapidae. The species is endemic to South America. [2]

Contents

Description

M. lemniscatus is a thin and brightly colored species. Adults measure 60–90 cm (24–35 in) in length, the maximum previously reported was 145 cm (57 in). The snout is black, followed by a narrow white crossband in front of the eyes, then a wider black band including the eyes. The eyes are small, and the rest of the head is red. The body pattern consists of slightly broad red rings that are separated by seven to 17 triads of three black and white rings. The tail has two black triads alternating with white rings.

Behavior

Like many coral snakes, M. lemniscatus is nocturnal and terrestrial, digging in loose soil or litter. It is not aggressive towards humans, although it can attack to defend itself. [3]

Reproduction

Breeding of M. lemniscatus is oviparous, having a clutch size of possibly 20 eggs. [3]

Diet

Alimentation of M. lemniscatus is mainly long-bodied vertebrates such as freshwater eels, gymnotiform fishes, caecilians, lizards, and snakes. [1] [3] [4]

Geographic range

M. lemniscatus is found in Argentina, northern Bolivia, Brazil, Colombia, eastern Ecuador, French Guiana, Guyana, [5] Paraguay, eastern Peru, Suriname, Trinidad, and Venezuela. [2]

Habitat

M. lemniscatus is a widespread species in South America, living in humid forests and lowland forests, in open savannas and gallery forests. It is also found in lowland floodplains, deforested areas or near human habitation, in humid areas or near places with a water source. It occurs from near sea level to an altitude of 1,000 m (3,300 ft). [3]

Venom

The venom of M. lemniscatus is a potent post- and pre-synaptic neurotoxin, which causes a potent and irreversible neuromuscular block in vertebrates. [6] Lemnitoxin, a potent myotoxic PLA2 type toxin, isolated from the venom of M. lemniscatus induces local and systemic myotoxicity after intramuscular and intravenous injection in mice, which is antigenically related to Micrurus nigrocinctus nigroxin, Notechis scutatus notexin, mulgotoxin of Pseudechis australis and textilotoxin of Pseudonaja textilis . [7]

References

  1. 1 2 Ines Hladaki, I., et al. (12 authors) (2019). "Micrurus lemniscatus ". The IUCN Red List of Threatened Species 2019: https://dx.doi.org/10.2305/IUCN.UK.2019-3.RLTS.T15202912A15201921.en. Accessed on 21 January 2022.
  2. 1 2 3 "Micrurus lemniscatus ". The Reptile Database. Consulted 3 October 2014.
  3. 1 2 3 4 "Living Hazards Database (LHD) – Search by Scientific Name" (PDF). Acq.osd.mil. Retrieved 23 March 2022.
  4. "Micrurus lemniscatus (Large Coral Snake)" (PDF). Sta.uwi.edu. Retrieved 29 May 2022.
  5. Cole CJ; Townsend CR; Reynolds RP; MacCulloch RD; Lathrop A (2013). "Amphibians and reptiles of Guyana, South America: Illustrated keys, annotated species accounts, and a biogeographic synopsis". Proceedings of the Biological Society of Washington. 125 (4): 317–620. doi:10.2988/0006-324x-125.4.317. S2CID   86665287.
  6. Floriano, Rafael S.; Schezaro-Ramos, Raphael; Silva, Nelson J.; Bucaretchi, Fábio; Rowan, Edward G.; Hyslop, Stephen (2019-07-01). "Neurotoxicity of Micrurus lemniscatus lemniscatus (South American coralsnake) venom in vertebrate neuromuscular preparations in vitro and neutralization by antivenom" (PDF). Archives of Toxicology. 93 (7): 2065–2086. Bibcode:2019ArTox..93.2065F. doi:10.1007/s00204-019-02476-9. ISSN   1432-0738. PMID   31123802. S2CID   163166169.
  7. Casais-e-Silva, Luciana L.; Teixeira, Catarina F. P.; Lebrun, Ivo; Lomonte, Bruno; Alape-Girón, Alberto; Gutiérrez, José María (2016-08-22). "Lemnitoxin, the major component of Micrurus lemniscatus coral snake venom, is a myotoxic and pro-inflammatory phospholipase A2" . Toxicology Letters. 257: 60–71. doi:10.1016/j.toxlet.2016.06.005. ISSN   0378-4274. PMID   27282409.

Further reading