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Teleostei >
Clupeiformes (Herrings) >
Dorosomatidae (Gizzard shads and sardinellas)
Etymology: Opisthonema: Greek, opisthe = behind + Greek,nema = filament (Ref. 45335).
Eponymy: Dr Audley Cecil Buller (1853–1894) was an American naturalist and collector of mammals, reptiles and fish. [...] (Ref. 128868), visit book page.
More on author: Regan.
環境： 環境 / 氣候帶 / 深度上下限 / 配送範圍
生態學
海洋 pelagic-neritic; 深度上下限 0 - 50 m (Ref. 188). 熱帶; 25°N - 5°S, 109°W - 77°W (Ref. 188)
Eastern Pacific: Baja California, Mexico southward to Punta Sal and Punta Picos, Peru.
東太平洋: 墨西哥的下加利福尼亞向南至 Punta Sal 與 Punta Picos ，祕魯。
大小 / 重量 / 年齡
成熟度: Lm ? range ? - ? cm
Max length : 20.0 cm TL 雄魚/尚未辨別雌雄; (Ref. 55763); common length : 18.0 cm SL 雄魚/尚未辨別雌雄; (Ref. 188)
背棘 (總數) : 0; 背的軟條 (總數) : 13 - 21; 臀棘: 0; 臀鰭軟條: 12 - 23. The filamentous last dorsal fin rays distinguish it from any other eastern Pacific genus. Separated from other eastern Pacific Opisthonema by having only 25 to 36 lower gill rakers in fishes over 14 cm standard length.
Body shape (shape guide): fusiform / normal; Cross section: compressed.
絲狀的最後背鰭鰭條區別它和任何其他的東太平洋的屬。 藉由在超過 14 公分標準長度的魚中只有 25 到 36個下鰓耙與其他東太平洋 Opisthonema 分開了。
Forms schools. Apparently the least abundant of the eastern Pacific species of Opisthonema. Feeds on crustaceans and pteropods. Caught along with the other species of the genera.
形成魚群。 顯然最不豐富的 Opisthonema 的東太平洋種. 吃甲殼動物與翼足目的軟體動物。 捕捉以及屬的另一個種。
生命週期和交配行為
成熟度 | 繁殖 | 產卵場 | 卵 | 孕卵數 | 仔魚
東太平洋: 墨西哥的下加利福尼亞向南至 Punta Sal 與 Punta Picos ，祕魯。
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 瀕危狀態 (Ref. 130435: Version 2025-2 (Global))
無危 (LC) ; Date assessed: 12 November 2019
人類使用
漁業: 自給性漁業
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基於模型的估計
首選溫度 (參考文獻
123201): 24.6 - 28.6, mean 27 °C (based on 34 cells).
系統發育多樣性指數 (參考文獻
82804): PD
50 = 0.5312 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00871 (0.00414 - 0.01834), b=3.06 (2.89 - 3.23), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
營養階層 (參考文獻
69278): 3.2 ±0.38 se; based on food items.
回復力 (參考文獻
120179): 高度, 族群倍增時間少於 15個月 (Preliminary K or Fecundity.).
釣魚的脆弱性 (Ref.
59153): Low vulnerability (10 of 100).
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