CONSERVATION:
This species is classed as one of the most highly endangered of all crocodilian species, mainly due to the small size and limited distribution of the population present in the wild, together with continued threats from habitat destruction and hunting. This species used to be found in a much wider variety of habitats (e.g. streams, rainforest - additional survey work may yet reveal unknown populations). However, over-hunting for the valuable skin reduced their numbers drastically. Hunting was made much easier by the high concentration of individuals during the dry, breeding season (where they were often taken from burrows). Crippling over-exploitation between the 1930s and 1960s was primarily responsible for the current critical status, particularly in Colombia. Population recovery has been slow. Survey data for Columbia are still lacking, although some surveys have been conducted recently indicating that a few remnant populations still exist. More survey data are available for Venezuela, indicating that isolated populations still remain where human contact is minimal. Current threats to these increasingly less-isolated populations include illegal killing (eggs and meat for food, teeth for medicinal purposes), collection (e.g. juveniles are often found for sale in local markets) and other interference, as well as habitat destruction. Although protection measures exists, they are generally ineffective. Competition with rapidly increasing Caiman crocodilus populations is also suspected to be hindering recovery. More data on natural history and ecological relationships with the llanos will be invaluable to aid efforts in ensuring the continued survival of this species.
The preservation of suitable habitat is underway in Venezuela. Sustainable use and reintroduction plans are underway and need to be developed further and monitored. Similar action needs to be initiated in Colombia, where closed-cycle farming programs are being considered by the government, together with an experimental release program which is underway. More efficient protection for remaining wild populations is also necessary. The similarity of the skin to that of C. acutus makes identification of illegal skins more difficult.
MORE INFORMATION:
For considerably more information on recent conservation initiatives for this species, including information the number of captive-raised animals back into the wild, see the CSG Action Plan resource.
SIGNIFICANT REFERENCES:
Arteaga, A, Seijas, AE, Chavez, C & Thorbjarnarson, JB (1994). Status and conservation of the Orinoco crocodile: an update. In: Crocodiles. Proceedings of the 12th Working Meeting of the Crocodile Specialist Group. IUCN, Gland, Switzerland. pp. 143-150
Medem, F (1983). Los Crocodylia de Sur America. Vol. 2 Colciencias, Bogota. pp. 270
Seijas, AE (1993). Bibliografia sobre los Crocodylia de Venezuela. Biollania 9: 151-170
Thorbjarnarson, JB & Franz, R (1987). Orinoco crocodile. In: Catalog of American Amphibians and Reptiles. Society for the Study of Amphibians and Reptiles. pp. 406.1-406.2
Thorbjarnarson, JB & Hernández, G (1992). Recent investigations of the status and distribution of the Orinoco crocodile, Crocodylus intermedius, in Venezuela. Biological Conservation 62: 179-188
Thorbjarnarson, JB & Hernández, G (1993). Reproductive ecology of the Orinoco crocodile (Crocodylus intermedius) in Venezuela. I. Nesting ecology and egg and clutch relationships. J. Herpetology 27(4): 363-370
Thorbjarnarson, JB & Hernández, G (1993). Reproductive ecology of the Orinoco crocodile (Crocodylus intermedius) in Venezuela. II. Reproductive and social behavior. J. Herpetology 27(4): 371-379