|Scientific Name:||Eptatretus indrambaryai|
|Species Authority:||Wongratana, 1983|
|Taxonomic Notes:||The species name was misspelled once by Wongratana (1983) as E. indambaryai in the species heading and indrambaryi in Table 1. This species is named after Mr. Boon Indrambarya, therefore E. indrambaryai is the correct spelling.|
|Red List Category & Criteria:||Least Concern ver 3.1|
|Reviewer(s):||Polidoro, B., Knapp, L. & Carpenter, K.E.|
This species s only known from 11 specimens taken in the Andaman Sea, Thailand. This deepwater species may be threatened by bottom trawling within its apparent restricted range. However, its range may be larger than what is known. Currently it is listed as Least Concern, but more research is needed on this species distribution, population, biology, life history, and potential impacts.
|Range Description:||This species is known from the Andaman Sea, Thailand (Wongratana 1983).|
|FAO Marine Fishing Areas:||
Indian Ocean – eastern
|Range Map:||Click here to open the map viewer and explore range.|
|Population:||The population of this species is known from only 11 type specimens. This could be a restricted range species but more surveys are necessary to verify this.|
|Habitat and Ecology:||
This species is known only from 11 specimens, of which four were caught from Nagasaki-maru deep-sea shrimp station 3 (7°37'02''N, 97°52'00''E), on 10 November 1981, in the third and final overnight catch experiment in a series of 80 shrimp traps. The experiments were randomly distributed on the continental slope of 45-60°, at depths of about 267-400 m, and bottom temperature 12.2-11.1°C, respectively. The bottom was recorded as sandy mud with patches of rocks or possibly boulders. Each specimen was caught in a separate trap without accompanying fauna (Wongratana 1983).
The copulatory organ is absent in this species. The gonads of hagfishes are situated in the peritoneal cavity. The ovary is found in the anterior portion of the gonad, and the testis is found in the posterior part. The animal becomes female if the cranial part of the gonad develops or male if the caudal part undergoes differentiation. If none develops, then the animal becomes sterile. If both anterior and posterior parts develop, then the animal becomes a functional hermaphrodite. However, hermaphroditism being characterised as functional needs to be validated by more reproduction studies (Patzner 1998).
|Major Threat(s):||There are no known direct threats to this species but it may be vulnerable to offshore bottom trawling.|
|Conservation Actions:||There are no conservation measurements in place, but more research is needed on this species' biology, population size, distribution and impacts.|
IUCN. 2011. IUCN Red List of Threatened Species (ver. 2011.1). Available at: http://www.iucnredlist.org. (Accessed: 16 June 2011).
Monkolprasit, S., Sontirat, S., Vimollohakarn, S., and Songsirikul, T. 1997. Checklist of fishes in Thailand. Office of Environmental Policy and Planning.
Patzner, R.A. 1998. Gonads and reproduction in hagfishes. In: J.M. Jørgensen, J.P. Lomholt, R.E. Weber, and H. Malte (eds), The biology of hagfishes, pp. 378-395. Chapman & Hall, London.
Wongratana, T. 1983. Diagnosis of 24 new species and proposal of new name for a species of Indo-Pacific clupeoid fishes. Japanese Journal of Ichthyology 29(4): 385-407.
|Citation:||Mincarone, M.M. 2013. Eptatretus indrambaryai. The IUCN Red List of Threatened Species. Version 2014.2. <www.iucnredlist.org>. Downloaded on 01 September 2014.|