分類 / Names
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Clupeiformes (Herrings) >
Dorosomatidae (Gizzard shads and sardinellas)
Etymology: Amblygaster: Greek, amblys = darkness + Greek, gaster = stomach (Ref. 45335).
More on author: Walbaum.
Environment: milieu / climate zone / depth range / distribution range
生態学
海; 汽水性の 関連する礁; 深さの範囲 10 - 75 m (Ref. 12260). Tropical; 35°N - 28°S, 31°E - 178°W (Ref. 188)
Indo-West Pacific: Red Sea and Mozambique to the Philippines, north to Taiwan and Okinawa (Japan), south to New Guinea, the Arafura Sea (Ref. 9819), northern Australia, and Fiji.
Length at first maturity / サイズ / 重さ / 年齢
Maturity: Lm 15.0 range ? - ? cm
Max length : 27.0 cm SL オス/雌雄の選別がない; (Ref. 54980); common length : 20.0 cm SL オス/雌雄の選別がない; (Ref. 188); 最大記録サイズ: 8 年 (Ref. 1488)
背面の脊椎 (合計) : 0; 背鰭 (合計) : 13 - 21; 肛門の骨: 0; 臀鰭: 12 - 23. Diagnosis: Body slender, belly rather rounded, scutes not prominent (Ref. 188). It is distinguished from Amblygaster clupeoides and A. leiogaster by the presence of a series of 10-20 gold, in life, or black, on preservation, spots down the flank, but sometimes missing; also, lower gillrakers 33-43, while 26-33 in the other two species (Ref. 188). Sardinops species are also round-bodied and have spots on the flanks, but possess bony radiating striae on the gill cover; round-bodied Sardinella species have one unbranched and 8 branched pelvic finrays while Amblygaster sirm has one unbranched and 7 branched pelvic finrays, and more than 100 gillrakers are present in Sardinella species, also no spots (Ref. 188). Last 2 anal-fin rays enlarged (Ref. 117228).
A pelagic, schooling species occurring in coastal waters and lagoons (Ref. 188, 53568), at depths of 1-75m (Ref. 82332). In Panggang Island, Indonesia it was recorded in temperatures of 28.5-29.8°C and salinities of 31.6-32.3 ppt (Ref. 823). It feeds mainly on copepods, nauplii and zoea larvae, larval bivalves and gastropods, as well as Peridinium and Ceratium; juveniles also on phytoplankton (Ref. 188). Used as bait in the tuna fishery.
Life cycle and mating behavior
成熟 | 繁殖 | 放精 | 卵 | 生産力 | 幼生
Spawn in school (Ref. 205).
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 2024-1)
Human uses
水産業: 商業; 餌: usually
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
Preferred temperature (Ref.
123201): 26.2 - 29.1, mean 28.2 °C (based on 1152 cells).
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5625 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00832 (0.00727 - 0.00952), b=3.06 (3.02 - 3.10), in cm total length, based on LWR estimates for this species (Ref.
93245).
栄養段階 (Ref.
69278): 2.9 ±0.30 se; based on food items.
Generation time: 1.2 (0.9 - 1.9) years. Estimated as median ln(3)/K based on 20
growth studies.
回復力 (Ref.
120179): 高い, １５か月以下の倍増期間の最小個体群 (K=0.37-3.74; tm=1; tmax=8; Fec > 10,000).
Fishing Vulnerability (Ref.
59153): Low vulnerability (16 of 100).
Nutrients (Ref.
124155): Calcium = 104 [31, 407] mg/100g; Iron = 1.75 [0.62, 4.11] mg/100g; Protein = 20.6 [17.9, 22.9] %; Omega3 = 0.277 [0.131, 0.610] g/100g; Selenium = 69.1 [23.0, 232.3] μg/100g; VitaminA = 39.8 [9.6, 176.1] μg/100g; Zinc = 1.67 [0.84, 3.13] mg/100g (wet weight); based on
nutrient studies.
