分類 / Names
共通名の | 類義語 | Catalog of Fishes(部類, 種) | ITIS | CoL | WoRMS | Cloffa
板鰓亜鋼(サメとエイ類) (sharks and rays) >
Carcharhiniformes (Ground sharks) >
Triakidae (Houndsharks) > Galeorhininae
Etymology: Hemitriakis: hemi-, from hemisys (Gr.), half, being a genus that Herre believed was “most closely related” to Triakis. (See ETYFish); indroyonoi: In honor of Indroyono Soesilo (b. 1955), geologist, engineer and Chairman, Marine and Fisheries Research Agency (Jakarta, Indonesia), “who has provided a great deal of support for shark research in Indonesia and was a strong advocate for the production of the field guide to sharks and rays of Indonesia”. (See ETYFish).
Environment: milieu / climate zone / depth range / distribution range
生態学
海 底生の. Tropical; 9°N - 8°N, 115°E - 117°E
Indian Ocean: eastern Indonesia (Ref. 80994) and India (Ref. 118627).
Length at first maturity / サイズ / 重さ / 年齢
Maturity: Lm ?, range 90 - ? cm
Max length : 120 cm TL オス/雌雄の選別がない; (Ref. 123599)
Presumably occurring on the outer continental shelf and upper slope. Females have litters of 6-11 where reproductive mode is viviparous, with histotrophy (no yolk-sac placenta); size at birth about 28- 30 cm TL (Ref. 80994).
Life cycle and mating behavior
Maturities | 繁殖 | Spawnings | Egg(s) | Fecundities | 幼生
White, W.T., L.J.V. Compagno and Dharmadi, 2009. Hemitriakis indroyonoi sp. nov., a new species of houndshark from Indonesia (Carcharhiniformes: Triakidae). Zootaxa 2110:41-57. (Ref. 80994)
IUCNのレッドリストの状況は (Ref. 130435)
絶滅危惧 (EN) (A2d; B2ab(v)); Date assessed: 23 September 2020
Human uses
用具
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インターネットの情報源
Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5156 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00363 (0.00185 - 0.00711), b=3.01 (2.83 - 3.19), in cm total length, based on LWR estimates for this species & (Sub)family-body (Ref.
93245).
栄養段階 (Ref.
69278): 4.3 ±0.5 se; based on size and trophs of closest relatives
Fishing Vulnerability (Ref.
59153): High to very high vulnerability (72 of 100).
