Nile crocodile predator vs prey behavior2/15/2024 The male does not take care of the young. The young stay near the nest until they are yearlings, but it's unclear how much care the female extends towards them. It is difficult to observe how the mugger crocodile takes care of the hatchlings due to inaccessibility of the nests. The female continuously adjusts the temperature of the nest for suitable conditions for hatchlings and herself. The female mugger crocodile defends and attends to the nest. Range age at sexual or reproductive maturity (male) 12 to 15 years.Range age at sexual or reproductive maturity (female) 8 to 10 years.Range time to independence 1 (high) years.gonochoric/gonochoristic/dioecious (sexes separate).The crocodiles can become independent when they are yearlings and large enough to defend themselves. The average incubation period for the eggs is 55-75 days. However, this has not been observed in the wild. In captivity they are known to lay 2 clutches a year. They have been known to lay around 25-30 eggs per clutch. Mugger crocodiles lay eggs during the annual dry season. It takes males 12-15 years to reach sexual maturity. In the wild females reach sexual maturity at lengths of 1.8-2m and ages of 8-10 years. ( Grigg and Kirshner, 2015)Īlthough reproduction in captivity is difficult the successful cases have been reported. Either the female or the male can make the nest, but the female maintains it. The mugger crocodiles make burrows for their nests. This can also mean submission for courting. Females lift their snout to signal submission when approached by a male. The crocodiles make humming sounds for courtship. Nile crocodiles slap their heads against each other to compete and earn the privilege to mate with the female. In Nile crocodiles ( Crocodylus niloticus) the male must swim around the female before it can show its testis. However, in other species in the same genus there are many ways that crocodiles perform rituals before mating. Not much has been reported for the mating habits of the mugger crocodile. ( Da Silva and Lenin, 2010 Grigg and Kirshner, 2015 Lang, et al., 1989) Females takes about 8-10 years to reach sexual maturity. The female mugger crocodile is sexually mature when it is 1.8-2 meters long. They are unable to defend themselves until they yearlings. The hatchlings lay under little shelves underneath the entrance, in the nest where they are able to hide from other species. report "Both sexes are produced in varying proportions at 31.5, 32.0, and 33.0C." This temperature discrepancy may be related to recording errors in the wild as compared to the constant temperatures that can be maintained in captivity. At temperatures of 32.5C and above, all males develop. (1998) report that all females develop at temperatures between 28-31C. However, for sex determination, Lang et al. Grigg and Kirshner (2015) reported the temperature needed for successful growth and survival has been recorded at an average 37.0C and a humidity of an average of 75.3%. They require a specific temperature and humidity for them to develop successfully.
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