Dugong dugon   (Müller, 1776)

dugong
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Dugong dugon
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Chagos Islands country information

Common names:
Occurence: questionable
Salinity: marine
Abundance: | Ref:
Importance: | Ref:
Aquaculture: never/rarely | Ref:
Regulations: no regulations | Ref:
Uses: no uses
Comments: The distribution of this species in this archipelago does not have credible records to support it (Ref. 1522) but during the Percy Laden Expedition, dugongs were spotted in the Chagos Archipelago (Ref. 84351). C: Ref. 1522; O: Ref. 84351.
National Checklist:
Country Information: ttp://en.wikipedia.org/wiki/Chagos_Island
National Fisheries Authority:
Occurences: Occurence Point map
Main Ref: Rice, D.W., 1998
National Database:

Common names from other countries

Avolia, ... more

Main reference

Size / Weight / Age

Max length : 406 cm TL male/unsexed; (Ref. 91927); max. published weight: 400.0 kg (Ref. 1394); max. reported age: 20 years (Ref. 91927)

Environment: milieu / climate zone / depth range / distribution range

Benthopelagic; depth range 0 - 200 m (Ref. 81173), usually 1 - 40 m

Climate / Range

Tropical; 30°N - 37°S, 32°E - 178°W

Distribution

Indo-Pacific: Dugong dugon hemprichii: Red Sea, Aqaba, Suez Canal; Dugong dugon dugon: Gulf of Aden, Mozambique, Persian Gulf, Pakistan, India, Myanmar, Malay Peninsula, Gulf of Thailand, Vietnam, Gulf of Tonkin, Comoros, Madagascar, Mauritius, Rodriguez, Sri Lanka, Andaman Islands, Indonesia, Ryukyu, Taiwan, Philippines, Guam, Palau, Micronesia, Caroline Is, Papua New Guinea, Solomon, New Caledonia, Australia, Fiji (Ref. 1522).
Countries | FAO areas | Ecosystems | Occurrences | Introductions

Biology     Glossary (e.g. epibenthic)

Maximum diving depth of 20.5 m recorded from Australia (Ref. 81173). Found in inshore waters, in bays and channels (Ref. 1394). Favors areas with warm shallow water, inshore and reefal seagrass beds (Ref. 936), particularly on fine sand (Ref. 86921). Occurs in small groups of up to 6 individuals; though, an exception of a herd of to 600 individuals was once recorded between Bahrain and Qatar (Ref. 801). Population estimates in the Persian/Arabian Gulf range from 5800 to 7300 individuals. Has a larger range than previously known, where their present range may be about 74% of the historical range (Ref. 114880). Feeds on a variety of seagrasses (Ref. 936). Almost entirely dependent on seagrass for food (Ref. 114880). Preyed upon by tiger sharks (Ref. 49538). Faces threats in the Persian/Arabian Gulf such as dredging, trawling and land reclamation, all damaging their critical seagrass habitats (Ref. 114880).

IUCN Red List Status (Ref. 120744)

  Vulnerable (VU) (A2bcd+4bcd); Date assessed: 12 July 2015

Threat to humans

Human uses

Fisheries: of no interest

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Internet sources

Estimates of some properties based on models

Resilience (Ref. 69278)
Vulnerability (Ref. 59153)
Price category (Ref. 80766)
Very high vulnerability (90 of 100)