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Reproductive biology of amur flathead asp Pseudaspius leptocephalus (Pallas, 1776)

التفاصيل البيبلوغرافية
العنوان: Reproductive biology of amur flathead asp Pseudaspius leptocephalus (Pallas, 1776)
المؤلفون: N. N. Semenchenko, E. V. Ostrovskaya
المصدر: Известия ТИНРО, Vol 200, Iss 2, Pp 308-320 (2020)
بيانات النشر: Transactions of the Pacific Research Institute of Fisheries and Oceanography, 2020.
سنة النشر: 2020
المجموعة: LCC:Aquaculture. Fisheries. Angling
مصطلحات موضوعية: амурский плоскоголовый жерех pseudaspius leptocephalus, нерест, тип икрометания, гонадосоматический индекс, плодовитость, соотношение полов, возраст созревания, Aquaculture. Fisheries. Angling, SH1-691
الوصف: Some characteristics of reproductive biology are considered for amur flathead asp Pseudaspius leptocephalus (Pallas, 1776), as features of its spawning, reproduction capability, annual dynamics of oocyte growth and females gonadosomatic index. This is the species with a single batch spawning. Age of maturity for the asps living in different areas ranges from 3+ to 5+, mostly 5+ with the body length of 31 cm for the key fishing grounds. They spawn in the lower sections of mountain rivers from late May till early June. Females prevail in ratio 2 : 1, on average, both in the spawning and feeding aggregations. The individual absolute fecundity of amur flathead asp females depends linearly on their body length and weight.
نوع الوثيقة: article
وصف الملف: electronic resource
اللغة: Russian
تدمد: 1606-9919
2658-5510
Relation: https://izvestiya.tinro-center.ru/jour/article/view/561; https://doaj.org/toc/1606-9919; https://doaj.org/toc/2658-5510
DOI: 10.26428/1606-9919-2020-200-308-320
URL الوصول: https://doaj.org/article/7864550a49d24894a6c73823869066f5
رقم الأكسشن: edsdoj.7864550a49d24894a6c73823869066f5
قاعدة البيانات: Directory of Open Access Journals
الوصف
تدمد:16069919
26585510
DOI:10.26428/1606-9919-2020-200-308-320