ANDACODA By: Alicia Smith
Kingdom AnimaliaPhylum ChordataClass ReptiliaOrder Squamata (lizards and snakes)Suborder SerpentesFamily Boidae (constrictors)Genus EunectesSpeciesmurinus
Physical Description These snakes may reach lengths of over 29 feet. There are many exaggerated stories about anacondas being much longer, but they cannot be confirmed.The Anaconda can weigh 550 pounds or more, but will usually top out at a few hundred pounds. These snakes can measure more than 12 inches in diameter. The female typically outweighs the males.
3 Traits The Anaconda has eyes high on its head so that it can stay camouflaged underwater while watching and waiting for its prey. Its nostrils are positioned there as well, so that it can breathe easily while almost completely underwater. Anacondas have 100 rear-facing sharp teeth which hold the prey while suffocating it with constriction.
Habitat The various Biomes where Anacondas are usually found are tropical rainforests, savannas, grasslands, scrub forests, and deciduous forests. The Anaconda prefers to be in the water, but they do enjoy spending some time on land in shallow caves by the water's edge, or in riverbank trees to bask in the sun. On land they can become tick-infested and they cannot move as quickly as they do in water. In water, they can stay completely submerged for 10 minutes.
Predators They have been known to occasionally prey on jaguars and attacks on humans can be confirmed, although this is rare.
What they eat? They typically feed on large rodents, tapirs, capybaras, deer, peccaries, fish, turtles, birds, sheep, dogs and aquatic reptiles. Younger Anacondas feed on mice, rats, chicks, frogs and fish.
Changed Over Time • Anacondas make breeding aggregations of one female and several males. Despite the uneven sex ratio, no conflicts, fights, or agonistic interactions occur between the males other than perhaps pushing each other away from the mating position. I also found that anacondas have an amazing Sexual Size Dimorphism (SSD) where the female is much larger than the males. Indeed anacondas show the largest SSD found in any tetrapod. This SSD is surprising due to the high likelihood that males compete physically for the females (by pushing each other). Physical competition would produce selection pressure for large size in males, however this is obviously not seen in anacondas. One of the aims of my research is to explain why we find this SSD despite the physical competition among males.
History • Anacondas can live into their thirties. • Anaconda snakes may not be the longest reptiles around, but they surely are the biggest in wide on averages that can be found in any given concentrated ratio across the world. • The physic of a fully grown anaconda is extensive. The smooth body of this reptile is all muscles and nothing else. • The anacondas make the use of their extreme muscular frame and strength to get hold of their prey.
Works Cited • http://www.google.com/search?q=ANACONDA+KINGDOM%2CPHYLUM%2CORDER%2CCLASS%2CFAMILY%2CGENUS+AND+SPECIES&rlz=1T4RNWN_enUS278US278&surl=1&safe=active&hl=en&nfpr=&spell=1&oq=ANACONDA+KINGDOM%2CPHYLUM%2CORDER%2CCLASS%2CFAMILY%2CGENUS+AND+SPECIES&aq=f&aqi=&aql=&gs_l=serp.3...4218.30750.0.316126.96.36.199.188.8.131.52.4184.108.40.206...0.0.g9FOr-m-bzQ • http://en.wikipedia.org/wiki/Eunectes_murinus • http://www.amersol.edu.pe/ms/7th/7block/jungle_research/new_cards/07/report07a.html • http://www.anacondas.org/diss/intro.pdf
Picture Works Cited • http://www.anacondapictures.net/Giant-Anaconda.html • http://www.google.com/imgres?imgurl=http://aquaexpeditions.com/blog/wp-content/uploads/Anaconda_Mar10_2.jpg&imgrefurl=http://aquaexpeditions.com/blog/tag/anaconda/&usg=__3bcMfYd3-FwjncWm55-mp3T14BI=&h=612&w=569&sz=103&hl=en&start=33&zoom=1&tbnid=tXSNh37EaZgurM:&tbnh=136&tbnw=126&ei=NMnET73LMYOK8QS87p3OCw&prev=/search%3Fq%3Danaconda%26start%3D21%26um%3D1%26hl%3Den%26safe%3Dactive%26sa%3DN%26rlz%3D1T4RNWN_enUS278US278%26tbm%3Disch&um=1&itbs=1 • http://aquaexpeditions.com/blog/wp-content/uploads/Anaconda_Mar10.jpg