分類 / Names
共通名の | 類義語 | Catalog of Fishes(部類, 種) | ITIS | CoL | WoRMS | Cloffa
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Clupeiformes (Herrings) >
Ehiravidae (River sprats)
Etymology: Clupeonella: Latin, clupea = sardine, derived from Clupeus = shield; diminutive (Ref. 45335).
Environment: milieu / climate zone / depth range / distribution range
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.
Length at first maturity / サイズ / 重さ / 年齢
Maturity: 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.
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.
Life cycle and mating behavior
Maturities | 繁殖 | Spawnings | Egg(s) | Fecundities | 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)
絶滅危惧 (EN) (A2bde); Date assessed: 17 July 2017
Human uses
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
Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5078 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00741 (0.00445 - 0.01234), 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 (Ref.
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 (Ref.
120179): 手段, １．４年～４．４年の倍増期間の最小個体群 (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low to moderate vulnerability (26 of 100).
