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Clupeiformes (Herrings) >
Alosidae (Shads and Sardines)
Etymology: Alosa: Latin, alausa = a fish cited by Ausonius and Latin, halec = pickle, dealing with the Greek word hals = salt; it is also the old Saxon name for shad = "alli" ; 1591 (Ref. 45335).
More on author: Regan.
محیط زیست: محیط زیست / منطقه آب و هوایی / تغييرات عمق / محدوده توزیع
بوم شناسي
; آب شيرين pelagic-neritic. Temperate
Europe: Endemic to Ireland.
اندازه / وزن / سن
بلوغ: Lm ?  range ? - ? cm
Max length : 20.0 cm SL جنس نر / بدون خواص جنسي; (Ref. 59043); بيشينه سن گزارش شده: 5 سال ها (Ref. 59043)
توصيف مختصر
كليدهاي شناسايي | ريخت شناسي | ريخت ستجي بوسيله انداره گيري
This species is distinguished from its congeners entering the freshwater in Atlantic basin by having 43-53 thin gill rakers at about 15-20 cm SL (Ref. 59043).
Body shape (shape guide): fusiform / normal.
Adults are pelagic in lacustrine areas (Ref. 59043). The females are larger than males. They spawn in June to July on gravel bars and gravelled shallows around large islands of the lake. Feed mainly on zooplankton. Population occupies a very small range and is threatened by eutrophication (Ref. 59043).
چرخه زندگی و رفتار جفتگیری
بلوغ | تولید مثل | تخم ریزی | تخم ها | باروری | توزاد ( لارو)
Kottelat, M., 1997. European freshwater fishes. An heuristic checklist of the freshwater fishes of Europe (exclusive of former USSR), with an introduction for non-systematists and comments on nomenclature and conservation. Biologia, Bratislava, 52/Suppl. 5:1-271. (Ref. 13696)
وضعيت در فهرست قرمز IUCN (Ref. 130435: Version 2025-2 (Global))
خطر برای انسان ها
Harmless
استفاده انسانی
ماهي گيري – شيلات: تجاري
ابزارها
گزارش های ويژه
بارگيری XML
منابع اينترنتي
تخمینها بر اساس مدلها
شاخص تنوع فیلوژنتیکی (مرجع
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00708 (0.00338 - 0.01484), b=3.08 (2.91 - 3.25), in cm total length, based on LWR estimates for this Genus-body shape (Ref.
93245).
سطح تروفیک (مرجع
69278): 3.6 ±0.4 se; based on size and trophs of closest relatives
Generation time: 1.8 ( na - na) years. Estimated as median ln(3)/K based on 1
growth studies.
جهندگی (مرجع
120179): زياد, كمينه زمان لازم براي دو برابر شدن جمعيت ، كمتر از 15 ماه (Preliminary K or Fecundity.).
آسیبپذیری ماهیگیری (Ref.
59153): Low vulnerability (14 of 100).
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