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Guidelines for the study of the age and growth of fish (a manual on ichthyology).
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Added:
28.04.2025, 17:40
28.04.2025, 17:40
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Added:
28.04.2025, 17:40
28.04.2025, 17:40
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29.04.2025, 17:40:37 +5m
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The main type of illustrations:
Тема:
Material:
An ordinary book block.
Обычный книжный блок.
Condition:
Used, no signatures, no stamps.
Б/У, без подписей, без штампов.
Restoration:
Without restoration.
Без реставрации.
Defects:
Show originalThe spine of thin cardboard was completely sprinkled.
Полностью обсыпался корешок из тонкого картона.
Location:
Ukraine, Poltava oblast, Poltava
Payment:
Наличный расчёт при встрече
Оплата на карту: Приватбанк, Приватбанк, Sens
Денежный перевод: Western Union, PayPal, Payoneer
Оплата на карту: Приватбанк, Приватбанк, Sens
Денежный перевод: Western Union, PayPal, Payoneer
Sending lot to: 
Ukraine,
The whole world
Ukraine,The whole worldDelivery:
Личная встреча Полтавская область, Полтава
Службы доставки: Нова пошта, Укрпочта, Delivery, Justin, Meest (according to the current legislation of the seller's country of residence).
Службы доставки: Нова пошта, Укрпочта, Delivery, Justin, Meest (according to the current legislation of the seller's country of residence).
Description:
The book contains a fairly complete overview of the methods used to study the age and growth of fish, gives instructions on how to collect and primary processing materials. The publication is designed for biologists and can be useful to workers in the raw material base of the fishing industry. Content by sections: Names of age groups. Collection of materials for the study of the age and growth of fish (scales, bones, otoliths). Determination of age scales, spawning and additional marks. Making prints of scales. Cap bone (operculum), cleithrum (cleithrum) and other bones with flat parts. Vertebrae. Bony rays of the fins of large fish. The rays of the fins of small and medium-sized fish. Otoliths. Calculation of the age composition of fish catches and the rate of maturation. Method of addition of average samples. Weighted age composition according to the Morozov-Mayorova method. Rate of maturation. Study of fish growth by observed values. Inverse calculations of fish growth. According to the formula of direct proportionality. Devices for mechanical calculations. Inverse calculations in cases of curvilinear relationship between the length of the body and the length of its scales (bones or otoliths). Calculation of variational curves of the length of catches. Calculation of fish growth characteristics.
В книге содержится достаточно полный обзор применяемых методик изучения возраста и роста рыб, даются указания о способах сбора и первичной обработки материалов. Издание рассчитано на специалистов-биологов и может быть полезно работникам сырьевой базы рыбной промышленности. Содержание по разделам: Названия возрастных групп. Сбор материалов для изучения возраста и роста рыб (чешуи, костей, отолитов). Определение по чешуе возраста, нерестовых и дополнительных отметок. Изготовление отпечатков чешуи. Крышечная кость (operculum), клейтрум (cleithrum) и другие кости с плоскими частями. Позвонки. Костные лучи плавников крупных рыб. Лучи плавников мелких и средних рыб. Отолиты. Вычисление возрастного состава уловов рыбы и темпа созревания. Метод сложения средних проб. Взвешенный возрастной состав по способу Морозова-Майоровой. Скорость созревания. Изучение роста рыб по наблюденным величинам. Обратные расчисления роста рыб. По формуле прямой пропорциональности. Приборы для механических расчислений. Обратные расчисления в случаях криволинейной зависимости между длиною тела и длиною ее чешую (костей или отолитов). Расчисление по вариационным кривым длины уловов. Вычисление характеристики роста рыб.
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