Borneo eel
| Borneo eel | ||||||||||||
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| Systematics | ||||||||||||
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| Scientific name | ||||||||||||
| Anguilla borneensis | ||||||||||||
| Popta , 1924 |
The Borneo eel ( Anguilla borneensis ) is a species of the eel ( Anguilla ). Its distribution area is limited to the east of Borneo . It extends from the rivers in the Tawau district in the Malaysian state of Sabah to the catchment area of the Mahakam in the Indonesian province of Kalimantan Timur . In its way of life, it is largely similar to the European eel . It lives in the clear, fast-flowing parts of the rivers, where it can be found under stones and ledges. The eel is called "Telakai" in Borneo.
Anguilla borneensis is considered a phylogenetically basal species of the genus Anguilla . The sexually mature animals of this species only have to cover a distance of 480 km (from the coast of Tawau) to 650 km (from the mouth of the Mahakam) through the sea to their spawning area in the Celebes Sea on their catadromic migrations . The 4,000 to 8,000 km routes that European and American eels travel are therefore likely an adaptation that occurred later in evolution.
Hazards and protective measures
Since this species has only a small distribution area, it is listed by the IUCN as a Vulnerable (endangered). Further research into the species and its habitat is required for more precise information on the hazard and the resulting protective measures.
literature
- Jun Aoyama, Sam Wouthuyzen, Michael J. Miller, Tadashi Inagaki and Katsumi Tsukamoto: Short-Distance Spawning Migration of Tropical Freshwater Eels . In: The Biological Bulletin (Biol. Bull.) 204.2003, pp. 104-108. ( Online version )
Individual evidence
- ↑ Anguilla borneensis in the IUCN Red List of Threatened Species 2014.1. Listed by: Jacoby, D. & Gollock, M., 2013. Retrieved June 12, 2014.