Overview

Distribution

Geographic Range

Scolopendra gigantea inhabits tropical and subtropical forests in northern South America.

Biogeographic Regions: neotropical (Native )

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Physical Description

Morphology

Physical Description

Centipedes are dorsoventrally flattened, and their bodies are divided into well-marked segments, each of which is flattened. Each body segment has a pair of legs, which means that there is always an odd number of leg pairs ranging from 21 to 23. Their rear legs are spiny in order to ward off potential predators. The legs on the first body segment are modified into venom-bearing fangs called maxillipeds that centipedes use to hunt their food. They have mandibles, which are a modified pair of legs that end in a sharp claw into which a poison gland opens. The mandibles are used for seizing and killing prey. Centipedes have long, many-jointed antenna, simple or no eyes, and a head covered by a flat shield. Their brain is relatively large and connected with a ventral chain of ganglia. Their heart is a chambered dorsal vessel. Centipedes breath through openings called spiracles, which are located between the upper and lower chitinous shields and just behind the legs. They lead into tracheal chambers that then branch off to supply the various parts of the body with oxygen. Scolopendra gigantea has spiracles located at segments 4,6,8,11,13,15,17,19, and 21. Because of these openings, centipedes can lose a lot of water quickly and dehydration can occur. A normal lifespan for S. gigantea is about ten years, and this species can grow to be 12 inches long.

Range mass: 0 to 0 kg.

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Ecology

Habitat

Habitat

Since they have no waxy covering on their cuticle, centipedes are limited to living in humid environments, and can usually be found in soil, leaf litter, or rotten wood.

Terrestrial Biomes: savanna or grassland ; forest ; scrub forest

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Trophic Strategy

Food Habits

Giant centipedes are voracious carnivores that feed on small invertebrates such as crickets, worms, snails and roaches, and can also eat lizards, toads and mice.

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Life History and Behavior

Reproduction

Reproduction

The difference of the sexes is hard to detect, even in adults. Because the male has no copulatory organs, he must spin a small silk pad and then deposit his sperm on it. Then, the female picks up the sperm and lays her eggs.

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Conservation

Conservation Status

Conservation Status

There is no indication that this species is in any way endangered.

US Federal List: no special status

CITES: no special status

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Relevance to Humans and Ecosystems

Benefits

Economic Importance for Humans: Negative

The poison emitted by the bite of Scolopendra gigantea is strong enough to seriously wound a human.

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Economic Importance for Humans: Positive

Because they feed on many insects and other "pests," Scolopendra gigantea are valuable to gardeners and farmers in keeping the potential pest populations down. Also, centipedes in general are becoming popular terrarium pets.

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Wikipedia

Scolopendra gigantea

Scolopendra gigantea (also known as Peruvian giant yellowleg centipede and Amazonian giant centipede) is the largest representative of the genus Scolopendra, regularly reaching lengths of 26 cm (10 in) and can exceed 30 cm (12 in).[1] It inhabits the northern and western regions of South America and the islands of Trinidad, Puerto Rico, Saint Martin, Saint Thomas, U.S. Virgin Islands, Jamaica, Grenada, and Hispaniola.

It is carnivorous, feeding on insects, lizards, frogs, birds, mice, and even bats.[2] It is also known to prey on tarantulas.[3] The body consists of 21 to 23 segments which are coppery red or maroon in color, each with a pair of yellow-tinted legs; the legs are adapted for fast walking. The centipede has modified claws called forcipules which curve around its head and can deliver venom into its prey. The extremely potent venom, containing acetylcholine, histamine and serotonin (pain mediators), proteases and a cardiodepressant factor, is toxic to humans and causes severe swelling, chills, fever, and weakness. Although bites are painful, they are very unlikely to be fatal to humans.[4]

References

  1. ^ R. M. Shelley & S. B. Kiser (2000). "Neotype designation and a diagnostic account for the centipede, Scolopendra gigantea L. 1758, with an account of S. galapagoensis Bollman 1889 (Chilopoda Scolopendromorpha Scolopendridae)". Tropical Zoology 13 (1): 159–170. 
  2. ^ J. Molinari, E. E. Gutiérrez, A. A. de Ascenção, J. M. Nassar, A. Arends & R. J. Márquez (2005). "Predation by giant centipedes, Scolopendra gigantea, on three species of bats in a Venezuelan cave". Caribbean Journal of Science 41 (2): 340–346. http://caribjsci.org/aug05/41_340-346.pdf. 
  3. ^ Giant Centipede VS Tarantula
  4. ^ Sean P. Bush, Bradley O. King, Robert L. Norris & Scott A. Stockwell (2001). "Centipede envenomation". Wilderness & Environmental Medicine 12 (2): 93–99. doi:10.1580/1080-6032(2001)012[0093:CE]2.0.CO;2. PMID 11434497. 
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