Cocodril, putxinel-lis per al bany

Product Information

Crocodiles ( Crocodilus) and hatchlings. The young produce sounds that are recognized by the mother (more) See all videos for this article Hatching call: Emitted by a female when breeding to alert other crocodiles that she has laid eggs in her nest. Adam Britton (6 September 2009). "Croc Blog: Crocodile myths #1 – the curious trochilus". Crocodilian.blogspot.com . Retrieved 26 April 2013. Like all crocodiles, they are sexually dimorphic, with the males up to 30% larger than the females, though the difference is considerably less compared to some species, like the saltwater crocodile. Male Nile crocodiles are about 30 to 50cm (12 to 20in) longer on average at sexual maturity and grow more so than females after becoming sexually mature, especially expanding in bulk after exceeding 4m (13ft 1in) in length. [32] [50] Adult male Nile crocodiles usually range in length from 3.3 to 5.0m (10ft 10in to 16ft 5in) long; at these lengths, an average sized male may weigh from 150 to 750kg (330 to 1,650lb). [10] [48] [51] [52] [53] Very old, mature ones can grow to 5.5m (18ft 1in) or more in length (all specimens over 5.5m (18ft 1in) from 1900 onward are cataloged later). [8] [9] [54] Large mature males can reach 1,000kg (2,200lb) or more in weight. [55] Mature female Nile crocodiles typically measure 2.2 to 3.8m (7ft 3in to 12ft 6in), at which lengths the average female specimen would weigh 40 to 250kg (88 to 551lb). [10] [48] [32] [56] Crocodiles Have Strongest Bite Ever Measured, Hands-on Tests Show". News.nationalgeographic.com. 15 March 2012. Archived from the original on 17 March 2012 . Retrieved 26 April 2013.

Hutton, J. M. (1987). "Growth and feeding ecology of the Nile crocodile Crocodylus niloticus at Ngezi, Zimbabwe". The Journal of Animal Ecology. 56 (1): 25–38. doi: 10.2307/4797. JSTOR 4797.Crocodylus niloticus". World Association of Zoos and Aquariums. Archived from the original on 9 April 2013 . Retrieved 1 January 2015. A smaller species that closely resembles and was long classified under the New Guinea crocodile, which it is now considered to be genetically distinct from. It lives south of the mountain barrier that divides the two species' ranges. It can be physically distinguished from the New Guinea crocodile by its shorter maxilla and enlarged postcranial elements. Cranial elements can still widely vary within the species, with populations from Lake Murray having much wider heads than those from the Aramia River. [8] CBCnews (2002). "Alligators detect silent ripples when hunting". CBC News . Retrieved 29 April 2013. Pooley, T. (1982). Discoveries of a Crocodile Man. 1st edition. William Collins Sons & Co. Ltd., Johannesburg.

Huchzermeyer, Fritz (2003). Crocodiles: Biology, Husbandry and Diseases. CABI Publishing. p. 13. ISBN 978-0-85199-656-1. http://books.google.cat/?id=4Arv-IUFnuoC&printsec=frontcover#PPA13,M1. Retrieved 2000-01-07.Cott, H.B. (1971). Parental care in Crocodilia, with special reference to Crocodylus niloticus. Proc. 1st. work.

El cocodril caça en grup amb l'objectiu d'aconseguir preses més grans. Per això, els exemplars que són més petits o que estan per sota de la cadena de comandament són els primers que ataquen l'animal. Quan ja el tenen immobilitzat, és el cocodril més gran el que ataca de forma mortal, destrossant la presa i alimentant-se'n per després deixar als altres les restes. Reproducció del cocodril del Nil Uriona TJ, Farmer CG (2008). "Recruitment of the diaphragmaticus, ischiopubis and other respiratory muscles to control pitch and roll in the American alligator ( Alligator mississippiensis)". Journal of Experimental Biology. 211 (Pt 7): 1141–1147. doi: 10.1242/jeb.015339. PMID 18344489. La fecundació és interna. Són ovípars; és a dir: ponen ous, en nius que construeixen amb bastons i branques. Però, aquesta és només la part superior del niu. Els ous en qüestió estan enterrats. De vegades, les tortugues ponen els seus ous en els nius dels cocodrils, aquests últims no s'adonen dels ous intrusos i els protegeixen i incuben com si fossin propis. Champion, G., & Downs, C. T. (2015). Spatial distribution responses of the Nile Crocodile (Crocodylus niloticus) to temporal habitat changes in Pongolapoort Dam, KwaZulu-Natal. The Ecology of Nile Crocodile (Crocodylus niloticus) in Pongolapoort Dam, Northern KwaZulu-Natal, South Africa, 49. Grabham, G. W. (1909). "A Crocodile's Nest". Nature. 80 (2056): 96. Bibcode: 1909Natur..80...96G. doi: 10.1038/080096a0. S2CID 3983082.Johannesburg: World's oldest crocodile turns 114". IBN Live. 16 December 2014. Archived from the original on 17 December 2014 . Retrieved 19 December 2014.

a b Kofron, C. P. (1993). "Behavior of Nile crocodiles in a seasonal river in Zimbabwe". Copeia. 1993 (2): 463–469. doi: 10.2307/1447146. JSTOR 1447146.During the mating season, males attract females by bellowing, slapping their snouts in the water, blowing water out of their noses, and making a variety of other noises. Among the larger males of a population, territorial clashes can lead to physical fighting between males especially if they are near the same size. Such clashes can be brutal affairs and can end in mortality but typically end with victor and loser still alive, the latter withdrawing into deep waters. [104] [105] Once a female has been attracted, the pair warble and rub the undersides of their jaws together. Compared to the tender behaviour of the female accepting the male, copulation is rather rough (even described as "rape"-like by Graham & Beard (1968)) in which the male often roars and pins the female underwater. [57] [105] Cott noted little detectable discrepancy in the mating habits of Nile crocodiles and American alligators. [10] In some regions, males have reportedly mated with several females, perhaps any female that enters his claimed territory, though in most regions annual monogamy appears to be most common in this species. [22] Eggs La família Crocodylidae és subdividida en dues subfamílies, una de les quals és extinta i dos o tres gèneres actuals i diversos més extints: Quan cacen, arrosseguen llurs preses al fons de l'aigua per ofegar-les si són vives, si són mortes se les mengen directament.