Carcharhinus borneensis, Borneo shark : fisheries

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Carcharhinus borneensis (Bleeker, 1858)

Borneo shark
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Native range | All suitable habitat | Point map | Year 2100
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Carcharhinus borneensis   AquaMaps   Data sources: GBIF OBIS
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Image of Carcharhinus borneensis (Borneo shark)
Carcharhinus borneensis
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分類 / Names 俗名 | 同種異名 | Catalog of Fishes(, ) | ITIS | CoL | WoRMS | Cloffa

Elasmobranchii 板鰓亞綱 (鯊魚與魟魚) (sharks and rays) > Carcharhiniformes (Ground sharks) 真鯊目 (Ground sharks) > Carcharhinidae (Requiem sharks) 白眼鮫科 (Requiem sharks)
Etymology: Carcharhinus: Greek, karcharos = sharpen + Greek, rhinos = nose (Ref. 45335).  More on author: Bleeker.

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

; 海洋 居於水底的.   熱帶; 21°N - 4°S

分布 國家 | FAO區域 | 生態系 | 發現紀錄 | Point map | 簡介 | Faunafri

Western Pacific: Borneo and China. Questionably occurring in Java, Indonesia and the Philippines. Due to its very restricted and very small area of occurrence (Borneo), conservation measures are urgently needed (Ref. 84280).
印度-西太平洋: 婆羅洲與中國。 可能出現在印尼爪哇與菲律賓。

大小 / 重量 / 年齡

Maturity: Lm ?  range ? - ? cm
Max length : 70.0 cm TL 雄魚/尚未辨別雌雄; (Ref. 244)

簡短描述 型態特徵 | 形態測量圖

This small species is characterized by the following: snout long and pointed; slender body and tail; alongside each mouth corner is a row of enlarged hyomandibular pores (5-12); upper anterior teeth finely serrated with a single narrow, oblique cusp; distal edge deeply notched and with several cusplets; lower anterior teeth with narrower, similarly oblique cusps; no lateral cusplets; total tooth row counts 23-26/23-25, or 46-50; second dorsal-fin origin well posterior of anal-fin origin, about opposite or just anterior to anal-fin midbase while second dorsal-fin origin to anal-fin origin 2.2-4.1% TL, 0.4-0.9 times second dorsal-fin base; interdorsal space 20.7-22.7% TL; pelvic fins small, anterior margins 4.4-5.8% TL and 35-42% of pectoral anterior margin; first dorsal fin triangular, with nearly straight posterior margin, free rear tip about opposite pelvic-fin origins, length 14.5-17.6% TL, 1.8-2.4 times height, inner margin 1.9-2.8 in base; second dorsal fin much smaller than first and slightly smaller than anal fin, length 7.5-10.2% TL, base 2.0-3.1 times height; height 21-29% of first dorsal fin height; anal fin height 1.1-1.6 times second dorsal height, base 1.1-1.5 times second dorsal-fin base; total vertebral counts 117-121, monospondylous precaudal counts 33-36, diplospondylous precaudal counts 21-26, diplospondylous caudal counts 56-60, precaudal counts 57-63; colour slate-grey dorsally, whitish ventrally with waterline clearly demarcated along head and body, fins no distinct black markings, pectoral fins and lower caudal lobe with whitish margins (Ref. 84280).
背面褐色的﹐腹面白色的, 第一背鰭與背部的尾鰭邊緣的頂端暗色的, 偶鰭與臀鰭有淺色的邊緣, 但是不顯著的斑紋.(參考文獻 9997)

生物學特性     字彙 (例如 epibenthic)

A rare species found inshore in coastal areas (Ref. 244). Viviparous (Ref. 50449). Specimens range in length from 23.7-61.8 cm TL. Two specimens collected in the 1800s had fresh umbilical scars at 23.7 and 27.4 cm, indicating that the size at birth is close to these sizes; four specimens of 34.1-37.3 cm had well healed, but still obvious umbilical scars. Five males with lengths of 54.8-57.6 cm were found mature (additional material of mature males with lengths of 59.0-62.0 cm and several pregnant females with lengths of 61.0-65.0 cm). Litter size of pregnant females was 6 (Ref. 84280). Undoubtedly taken in local fisheries (Ref. 244).

一個稀有的種在沿岸區域中發現沿海地區。 (參考文獻 244) 胎生的.(參考文獻 50449) 毫無疑問地採自了地方漁場。 (參考文獻 244)

Life cycle and mating behavior 成熟度 | 繁殖 | 產卵場 | | 孕卵數 | 仔魚

Viviparous, placental (Ref. 50449). Distinct pairing with embrace (Ref. 205).印度-西太平洋: 婆羅洲與中國。 可能出現在印尼爪哇與菲律賓。

主要參考資料 Upload your references | 參考文獻 | 合作者 : Compagno, Leonard J.V. | 合作者

Compagno, L.J.V., 1984. FAO Species Catalogue. Vol. 4. Sharks of the world. An annotated and illustrated catalogue of shark species known to date. Part 2 - Carcharhiniformes. FAO Fish. Synop. 125(4/2):251-655. Rome: FAO. (Ref. 244)

IUCN 瀕危狀態 (Ref. 123251)

  瀕危 (EN) (C2a(ii)); Date assessed: 01 October 2005

CITES (Ref. 123416)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

對人類具威脅

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人類使用

漁業: 自給性漁業
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Estimates based on models

Preferred temperature (Ref. 115969): 23.7 - 28.3, mean 27.5 °C (based on 219 cells).
Phylogenetic diversity index (Ref. 82805):  PD50 = 0.5000   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00479 (0.00219 - 0.01045), b=3.09 (2.92 - 3.26), in cm total length, based on LWR estimates for this Genus-body shape (Ref. 93245).
營養階層 (Ref. 69278):  3.9   ±0.6 se; based on size and trophs of closest relatives
回復力 (Ref. 120179):  非常低的, 最小族群倍增時間超過14 年 (Fec assumed to be <10).
瀕危性 (Ref. 59153):  Low to moderate vulnerability (34 of 100) .
價格種類 (Ref. 80766):   Medium.