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Anchoa walkeri Baldwin & Chang, 1970

Persistent anchovy
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Anchoa walkeri   AquaMaps   Data sources: GBIF OBIS
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Image of Anchoa walkeri (Persistent anchovy)
Anchoa walkeri
Picture by Robertson, R.

分类 / Names 俗名 | 同种异名 | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa

Actinopterygii 辐鳍鱼纲 (条鳍鱼) > Clupeiformes (Herrings) 鯡目 (Herrings) > Engraulidae (Anchovies) 鯷科 (Anchovies) > Engraulinae
Etymology: Anchoa: Italian ancioa = anchovy (Ref. 45335).

Environment: milieu / climate zone / depth range / distribution range 生态学

; 海洋; 淡水; 半咸淡水; 深度上下限 0 - 50 m (Ref. 96339).   熱帶; 31°N - 5°N, 115°W - 77°W (Ref. 189)

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Eastern Central Pacific: Gulf of California at San Felipe, Baja California and along Sonora and Sinaloa coasts, Mexico, south to Panama, possibly reaching further south.
中太平洋東部: 在聖費利佩的加州灣, 下加利福尼亞而且沿著順拿那與墨西哥的新納娜阿海岸,南至巴拿馬, 可能地達到更南方。

大小 / 重量 / 年龄

Maturity: Lm ?  range ? - ? cm
Max length : 14.5 cm TL 雄鱼/尚未辨别雌雄; (Ref. 96339)

简单描述 型态特徵 | 形态测量图

背棘 (总数): 0; 臀棘 0; 臀鳍软条: 23 - 32. Snout moderately pointed, about 3/4 eye diameter; maxilla long, tip sharply pointed, reaching to or just beyond gill opening, but shorter and more blunt at 4 to 5 cm standard length; gill cover canals of walkeri-type. Pectoral fins large, tip reaching to beyond pelvic fin base; anal fin origin below dorsal fin origin or a little behind. Silver stripe along flank, as eye in some places.
吻一般尖, 大约 3/4 眼直径; 颚骨长的, 顶端非常尖的, 延伸到或正好超过鳃裂, 但是更短与更更钝在 4 到 5 公分标准长度; walkeri 的鳃盖运河-类型。 胸鳍大的, 顶端延伸到超过腹鳍基底; 在背鳍起点之下的臀鳍起源或稍微往后。 银色的斑纹沿着侧面, 如眼在一些地方中。

生物学特性     字汇 (例如 epibenthic)

Presumably schooling and most often found in warm, murky waters near shore and in bays near river mouths (specimens taken some km up the Rio Santiago, Nayarit, Mexico). Capable of tolerating lower salinities than that of the sea (Ref. 9298). The ovarian eggs are elliptical. Caught as a by-catch of encircling, lamparo, and trawl nets (Ref. 9298).

推测为群游而且最时常发现于温暖的, 浑浊的水近岸与在河口 (占据一些公里上游 Rio 圣地亚哥, Nayarit ,墨西哥的标本) 附近的海湾中. 能够超过海洋的容忍低的盐度。 (参考文献 9298) 卵巢的卵是椭圆的。 捕捉作为一个围网,灯光诱捕与拖网的误捕.(参考文献 9298)

Life cycle and mating behavior 成熟度 | 繁殖 | 产卵场 | | 孕卵数 | 仔鱼

Spawn in school (Ref. 205).中太平洋東部: 在聖費利佩的加州灣, 下加利福尼亞而且沿著順拿那與墨西哥的新納娜阿海岸,南至巴拿馬, 可能地達到更南方。

主要参考文献 Upload your references | 参考文献 | 合作者 | 合作者

Whitehead, P.J.P., G.J. Nelson and T. Wongratana, 1988. 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(7/2):305-579. Rome: FAO. (Ref. 189)

世界自然保护联盟红皮书 (Ref. 120744)

  最不相关 (LC) ; Date assessed: 04 February 2009

CITES (Ref. 115941)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

对人类的威胁

  无害处的





人类利用

渔业: 自给性渔业
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Estimates of some properties based on models

Preferred temperature (Ref. 115969): 23.2 - 28.6, mean 27.2 (based on 32 cells).
Phylogenetic diversity index (Ref. 82805):  PD50 = 0.5000   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00525 (0.00237 - 0.01161), b=3.14 (2.97 - 3.31), in cm Total Length, based on LWR estimates for this Genus-body shape (Ref. 93245).
营养阶层 (Ref. 69278):  3.4   ±0.4 se; Based on size and trophs of closest relatives
回复力 (Ref. 69278):  高度, 族群倍增时间少于 15个月 (Preliminary K or Fecundity.).
脆弱性 (Ref. 59153):  Low vulnerability (16 of 100) .
价格分类 (Ref. 80766):   Medium.