Females are generally larger than males,  and have been reported up to 4. Most predation occurs from June to November, when flooding has somewhat subsided and wading birds are the most common prey. Observations and analysis of gut and waste contents from regularly flooded areas in the Pantanal region of southwestern Brazil indicate that they are generalist feeders that employ both ambush predation and wide-foraging strategies. Their prey consists nearly exclusively of aquatic or semi-aquatic species, including a wide variety of mammals, birds, reptiles, amphibians, fish and eggs.
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Ecology: The Yellow Anaconda lives mainly in water and appears to be restricted to swampy, seasonally flooded, or riverine habitats Reed and Rodda, The Yellow Anaconda is a generalist carnivore, preying mainly on animals found in wetland and riparian areas throughout its range.
Its diet consists of birds, bird eggs, small mammals, turtles, lizards, other snakes, occasional fish or fish carrion, capybara, and caimans Reed and Rodda, The Yellow Anaconda is considered an ambush hunter and constrictor. The digestive system is relatively slow and the Yellow Anaconda may eat only every few days or months, depending on the size of the last prey item.
The Yellow Anaconda can survive long periods without prey Reed and Rodda, An adult Yellow Anaconda has few natural predators. Humans are the main predator and it is hunted primarily for its skin, although there are varying numbers imported each year for the pet trade.
The Yellow Anaconda is a solitary animal, except in breeding season April and May. Yellow Anacondas have been known to form breeding balls, consisting of one female and multiple males. After a 6-month gestation period, the females give birth to fully developed live young. There is great variation in the literature about litter size, but Reed and Rodda believed the best estimate for wild individuals was 7—42 with an average of These young immediately are able to live on their own.
Young anacondas reach sexual maturity at 17 to 29 months old. In captivity, Yellow Anacondas have lived to more than 20 years of age Reed and Rodda, Means of Introduction: Released pets. Yellow Anancondas are available in the pet trade but are quite expensive. Status: Unknown. The remote location of these specimens and finding three in a approximately 6 months from the same area is worrisome. Impact of Introduction: The impacts of this species are currently unknown, as no studies have been done to determine how it has affected ecosystems in the invaded range.
The absence of data does not equate to lack of effects. It does, however, mean that research is required to evaluate effects before conclusions can be made. References : click for full references Krysko, K. Verified non-indigenous amphibians and reptiles in Florida from through —Outlining the invasion process and identifying invasion pathways and stages.
Zootaxa — Reed, R. Giant constrictors: biological and management profiles and an establishment risk assessment for nine large species of pythons, anacondas, and the boa constrictor: U. Geological Survey Open-File Report —, p. Author: Fuller, P.
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