Sauvagella madagascariensis, Madagascar round herring

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Sauvagella madagascariensis (Sauvage, 1883)

Madagascar round herring
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Sauvagella madagascariensis
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分類 / Names 俗名 | 同種異名 | Catalog of Fishes(, ) | ITIS | CoL | WoRMS | Cloffa

Teleostei > Clupeiformes (Herrings) > Ehiravidae (River sprats)
Etymology: Sauvagella: Because of Sauvage, 1860-1880 and 1875-1891; ichtyologist that studied the Ogowe; author of "Histoire naturelle des poissons de Madagascar";  madagascariensis: Named for the island to which it is endemic, Madagascar (Ref. 33664).
More on author: Sauvage.

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

; 淡水; 半鹹淡水 大洋性. 熱帶; 11°S - 26°S, 42°E - 50°E (Ref. 188)

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

Africa: mid and lower reaches of eastern coastal rivers and Pangalanes Canal network in Madagascar (Ref. 188, 33664).
非洲: 馬達加斯加的特有種。

大小 / 重量 / 年齡

Maturity: Lm ?  range ? - ? cm
Max length : 6.6 cm SL 雄魚/尚未辨別雌雄; (Ref. 33664)

簡短描述 型態特徵 | 形態測量圖

背棘 (總數): 0; 背的軟條 (總數): 13-17; 臀棘 0; 臀鰭軟條: 17 - 19; 脊椎骨: 41 - 43. Diagnosis: Body elongate, a little compressed; belly rounded, without pre-pelvic scutes, but a pelvic scute present with slender lateral arms; gillrakers few, 17-20 gillrakers on lower limb of first arch; pelvic fin with 1 unbranched and 7 branched finrays, a little anterior to dorsal fin origin; last two anal finrays not separate from others (Ref. 188, 33664). It is distinguished from other non-scuted clupeids of Spratelloides, Dussumieria and Etrumeus by presence of a normal pelvic scute vs. W-shaped (Ref. 188). It is distinguished from Sauvagella robusta by a higher vertebral number, 41-43 vs. 38-40; a shallower body, 15.8-21.1% of standard length vs. 20.8-27.4%; a longer snout, 26.2-33.7% of head length vs. 18.5-26.6%; and a higher anal fin ray count, 17-19 vs. 13-17 (Ref. 33664).
身體稍微扁長形, 腹面圓形的, 沒有前腹鰭鱗甲, 但是一個腹鰭鱗甲存在的有細長的垂直手臂。 鰓耙可能很少的。 最後兩個臀鰭棘條不分開其它 (比較 Spratellomorpha bianalis) 。 在區域 ( Spratelloides , Dussumieria, Etrumeus) 中與其他的非被鱗甲的鯡魚區分被有正常的腹鰭鱗甲 (比較 W 形的).(參考文獻 188) 體高 15.8-21.1% SL。 吻 26.2-33.7% HL.(參考文獻 33664)

生物學特性     字彙 (例如 epibenthic)

Found in freshwaters, possibly tolerating brackish water (Ref. 188); from sea level to about 450m, mostly in smaller rivers and streams and usually in forested areas (Ref. 56161). Probably planktivorous (Ref. 56161).

在東方沿海的河川與 Pangalanes 管網絡的中下游中出現於淡水與半鹹淡的水棲息地。 (參考文獻 33664)

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

非洲: 馬達加斯加的特有種。

主要參考資料 Upload your references | 參考文獻 | 合作者 | 合作者

Stiassny, M.L.J., 2002. Revision of Sauvagella Bertin (Clupeidae; Pellonulinae; Ehiravini) with a description of a new species from the freshwaters of Madagascar and diagnosis of the Ehiravini. Copeia 2002(1):67-76. (Ref. 33664)

IUCN 瀕危狀態 (Ref. 130435)

  無危 (LC) ; Date assessed: 29 June 2016

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

對人類具威脅

  無害處的





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網路資源

AFORO (otoliths) | Aquatic Commons | BHL | Cloffa | BOLDSystems | Websites from users | 檢查 FishWatcher | CISTI | Catalog of Fishes: , | DiscoverLife | ECOTOX | FAO - Publication: search | Faunafri | Fishipedia | Fishtrace | GenBank: 基因組, 核甘 | GloBI | Google Books | Google Scholar | Google | IGFA World Record | MitoFish | Otolith Atlas of Taiwan Fishes | PubMed | Reef Life Survey | Socotra Atlas | 樹狀分類階層 | Wikipedia: , 搜尋 | World Records Freshwater Fishing | 動物學的記錄

Estimates based on models

Phylogenetic diversity index (Ref. 82804):  PD50 = 0.7500   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00871 (0.00365 - 0.02081), b=3.02 (2.81 - 3.23), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).
營養階層 (Ref. 69278):  3.1   ±0.3 se; based on size and trophs of closest relatives
回復力 (Ref. 120179):  高度, 族群倍增時間少於 15個月 (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref. 59153):  Low vulnerability (10 of 100).