The Komodo is long lived (as are most of the larger reptilian species) with an estimated life expectancy of over 50 years in the wild. In keeping with its longevity, the Komodo matures late in life, becoming sexually viable at five to seven years, and achieving maximum body density in fifteen years. Komodos are sexually dimorphous, which means males are bigger than females. The largest recorded specimen was 3.13 meters in length and was undoubtedly a male. Females rarely exceed 2.5 meters in length. What is perhaps more important, is that the characteristic bulk is achieved by older dominant males in clearly delineated territorial areas. As an adult Komodo can consume up to 80% of its body weight in one gorging, weight is a highly variable factor, and is largely dependent on the most recent feeding. A typical weight for an adult Komodo in the wild is 70 kilograms.
The Komodo has two highly developed sensory organs – the olefactory and the Jacobson's - which allow the dragon to detect rotting carcasses from distances as great as 10 kilometers. The yellow forked tongue is constantly being flicked in and out of the mouth, “tasting the air”, and inserted into the Jacobson's organ located in the roof of the mouth. The individual tips are highly sensitive and are capable of discriminating odors in the magnitude of millionths of a part. Using the information garnered, the dragon wends in a seemingly random, winding path which becomes straighter the closer it approaches to the carrion. The Komodo is typically a communal feeder and any number of dragons might arrive at the site of the carcass.
Between the months of May and August, mating occurs at and around feeding sites. As males outnumber females in a ratio of nearly four to one, the dominant male must fend off other suitors before mating. Males will engage in slashing, biting and bipedular rearing onto the tail, until the dominant male is acknowledged by displays of subservience and the vanquished flees. The female is forced into a prone position while the male tongue flicks her body, and in particular, the fold between the torso and the rear leg close to the cloaca. With Komodos, the male hemipenes are located here as are the female genetalia. Once prone, the male mounts onto the back of the female and inserts one of the two hemipenes into her cloaca , depending on which side he is perched. The month of September is when a clutch of 15-30 eggs is buried in a nest dug with the powerful claws of the female dragon. A typical nesting site is in the composting vegetative mounds of the maleo birds which are indigenous to Komodo.
The gestation period for the eggs is eight to nine months. Hatchlings, which average 40 centimeters in length and weigh 100 grams, emerge from the nest in April and immediately scramble up the nearest tree to avoid being eaten by the adults. There are plenty of small lizards, insects and mammals in the canopy after the brief rainy season in January and February to sustain the juveniles until they descend to the forest floor roughly a year later. This period of change between an arboreal and a terrestial habitat, when the juveniles are a meter in length, is a time fraught with danger. The juvenile Komodo is just too bulky to safely ascend many trees, and not big enough to outrun a ravenous and determined adult. Cannibalism is a fact of life for this species, and perhaps is an evolutionary response to the harsh, arid climate of Komodo.
Prey species for the dragon on Komodo island include deer, boar, wild buffalo, the maleo bird, snakes, reptiles and small mammals. On Rinca, the monkeys and wild horses found there are also constitute prey, as do the goats raised by the local people. |
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Komodo with couple visitors
On the hill
Looking for fishes
Walking by the white sandy beach
The Famous Red Beach
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