Gogolia filewoodi
– Data Deficient
Taxonomy
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Kingdom:
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ANIMALIA
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Phylum:
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CHORDATA
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Class:
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CHONDRICHTHYES
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Order:
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CARCHARHINIFORMES
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Family:
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TRIAKIDAE
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Scientific Name:
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Gogolia filewoodi
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Species Authority:
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Compagno, 1973
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Common Name/s:
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| English | — | SAILBACK HOUNDSHARK |
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Assessment Information
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Red List Category & Criteria:
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DD ver 3.1 (2001)
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Year Assessed:
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2003
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Assessor/s:
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Fowler, S.L. (SSG Australia & Oceania Regional Workshop, March 2003)
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Evaluator/s:
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Stevens, J., Cavanagh, R.D., Fowler, S. & Musick, J.A. (Shark Red List Authority)
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Justification:
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Known from only one pregnant female (carrying two near-term pups, suggesting a low intrinsic rate of population increase), collected off a river mouth in water 73 m deep. Presumably an endemic of the New Guinea continental shelf. The extent of occurrence of this species is likely small (less than 20,000 km²), but there is no evidence of major threats to the habitat or significant fishing pressure (this very distinctive species has not been reported from landing sites or markets).
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Geographic Range
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Range Description:
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Unknown (only one specimen recorded). Probably an uncommon endemic; it is very distinctive in appearance and should have been recorded more frequently if common, but the area is not well-surveyed.
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Countries:
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Native:
Indonesia (Irian Jaya); Papua New Guinea
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FAO Marine Fishing Areas:
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Native:
Pacific-western central
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Population
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Population:
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Only one specimen recorded.
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Population Trend:
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Habitat and Ecology
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Habitat and Ecology:
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Continental shelf, off a river mouth, probably on or close to bottom. Taken on a hand line. Probably feeds on bottom-dwelling species. The type specimen was a pregnant female (74 cm) with a 24 cm near-term foetus. This is an ovoviviparous species with normal litters numbering two pups, indicating low intrinsic rate of population increase.
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System:
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Marine
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List of Habitats:
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| 9.1 | Marine Neritic - Pelagic |
| 10.1 | Marine Oceanic - Epipelagic (0-200m) |
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Threats
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Threats:
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Bycatch in shallow continental shelf fisheries.
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List of Threats:
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| 4.1.1.1 | Accidental mortality - Bycatch - Fisheries-related - Hooking (ongoing) |
| 4.1.1.2 | Accidental mortality - Bycatch - Fisheries-related - Netting (ongoing) |
| 9.2 | Intrinsic factors - Poor recruitment/reproduction/regeneration (ongoing) |
| 9.7 | Intrinsic factors - Slow growth rates (ongoing) |
| 9.9 | Intrinsic factors - Restricted range (ongoing) |
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Conservation Actions
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Conservation Actions:
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There are currently no conservation measures in place for this species.
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List of Conservation Actions:
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| 0 | No conservation actions (in place) |
| 3.2 | Research actions - Population numbers and range (needed) |
| 3.3 | Research actions - Biology and Ecology (needed) |
| 3.4 | Research actions - Habitat status (needed) |
| 3.5 | Research actions - Threats (needed) |
| 3.6 | Research actions - Uses and harvest levels (needed) |
| 3.9 | Research actions - Trends/Monitoring (needed) |
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Bibliography
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Bibliography:
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Compagno, L.J.V. In prep. b. Sharks of the World. An annotated and illustrated catalogue of the shark species known to date. Volume 3. (Carcharhiniformes). FAO Species Catalogue for Fisheries Purposes No. 1, Vol.3. FAO, Rome. Shark Specialist Group. For more information, see the Specialist Group website.
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