分類 / 名前
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Clupeiformes (Herrings) >
Ehiravidae (River sprats)
Etymology: Clupeonella: Latin, clupea = sardine, derived from Clupeus = shield; diminutive (Ref. 45335).
Eponymy: Dr Oscar Andreevich von Grimm (1845–1921) was a Russian ichthyologist who was the Chief Inspector of Russian fisheries. [...] (Ref. 128868), visit book page.
環境：環境 / 気候帯 / 深さの範囲 / 分布範囲
生態学
; 汽水性の 外洋の; 海洋回遊性 (Ref. 51243); 深さの範囲 ? - 32 m (Ref. 188). Temperate; 43°N - 35°N, 47°E - 54°E (Ref. 188)
Former USSR and Asia: central and southern parts of the Caspian Sea.
初回成熟時の長さ / サイズ / 重さ / 年齢
成熟: Lm 8.8 range ? - ? cm
Max length : 14.5 cm SL オス/雌雄の選別がない; (Ref. 188); common length : 11.0 cm SL オス/雌雄の選別がない; (Ref. 188); 最大公表体重: 23.00 g (Ref. 117561); 最大記録サイズ: 8 年 (Ref. 117561)
背面の脊椎 (合計) : 0; 背鰭 (合計) : 13 - 21; 肛門の骨: 0; 臀鰭: 12 - 23. Body moderately slender; head long and narrow; belly sharply keeled, with 26 to 32 scutes; pectoral fin tips rounded; last two anal fin rays enlarged; pterotic bulla absent; no notch at the center of the upper jaw.
Body shape (shape guide): fusiform / normal; Cross section: compressed.
Schools in the open sea, not approaching shores. Occurs mainly in the south in winter, migrating to the middle parts of the sea in spring and returning south in November-December. Found in upper layers in March-April, but descends to 16 to 32 m in summer and autumn. Feeds mainly on copepods, also pelagic mysids and small fishes. Breeds in January-September intermittently in the open sea. Stocks said to be depleted in southern part of Caspian Sea.
ライフサイクルと交尾行動
成熟 | 繁殖 | 放精 | 卵 | 生産力 | 幼生
Whitehead, P.J.P., 1985. FAO Species Catalogue. Vol. 7. Clupeoid fishes of the world (suborder Clupeoidei). An annotated and illustrated catalogue of the herrings, sardines, pilchards, sprats, shads, anchovies and wolf-herrings. FAO Fish. Synop. 125(7/1):1-303. Rome: FAO. (Ref. 188)
IUCNのレッドリストの状況は (Ref. 130435: Version 2025-2 (Global))
絶滅危惧 (EN) (A2bde); Date assessed: 17 July 2017
人間の用途
水産業: 少数商業の
用具
特記事項
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インターネットの情報源
モデルに基づく推定値
系統多様性指数 (参照
82804): PD
50 = 0.5078 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00724 (0.00437 - 0.01201), b=3.01 (2.87 - 3.15), in cm total length, based on LWR estimates for this species & (Sub)family-body (Ref.
93245).
栄養段階 (参照
69278): 3.4 ±0.45 se; based on food items.
Generation time: 2.6 (2.2 - 4.1) years. Estimated as median ln(3)/K based on 11
growth studies.
回復力 (参照
120179): 手段, １．４年～４．４年の倍増期間の最小個体群 (Preliminary K or Fecundity.).
漁業の脆弱性 (Ref.
59153): Low to moderate vulnerability (26 of 100).
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