Size-age composition of southern poutassou (Micromesistius australis) catches in New Zealand area
Length-age composition of catches of the Southern blue whiting (Micromesistius australis) in the New Zealand waters were studied. The material was collected from August to October 1992 aboard the FV Sapun Gora (19th cruise). A total of 398 pairs of otoliths were treated. Ten age groups were distinguished. The maximum fish age in catches is 13 years. 10- and 11-year-old fish are absent from the samples. No significant difference is found in the growth of males and females. Males at any age are somewhat smaller than females. It was ascertained that the linear growth of the Southern blue whiting from the region of New Zealang was described by the Von Bertalanffy's growth equation as follows: L = 61.41(1-e super(-0.3659(1-0.6336))).
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Format: | Journal Contribution biblioteca |
Language: | Russian |
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1994
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Subjects: | Length-age structure, Catch composition, Micromesistius australis, Age composition, Equations, Females, Males, Возрастной состав, Состав уловов, Самки, Самцы, |
Online Access: | http://hdl.handle.net/1834/15808 |
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dig-aquadocs-1834-158082021-05-19T06:59:31Z Size-age composition of southern poutassou (Micromesistius australis) catches in New Zealand area Размерно-возрастной состав уловов южной путассу (Micromesistius australis) из района Новой Зеландии Russelo, I.B. Yakovlev, V.N. Length-age structure Catch composition Micromesistius australis Age composition Equations Females Males Возрастной состав Состав уловов Самки Самцы Length-age composition of catches of the Southern blue whiting (Micromesistius australis) in the New Zealand waters were studied. The material was collected from August to October 1992 aboard the FV Sapun Gora (19th cruise). A total of 398 pairs of otoliths were treated. Ten age groups were distinguished. The maximum fish age in catches is 13 years. 10- and 11-year-old fish are absent from the samples. No significant difference is found in the growth of males and females. Males at any age are somewhat smaller than females. It was ascertained that the linear growth of the Southern blue whiting from the region of New Zealang was described by the Von Bertalanffy's growth equation as follows: L = 61.41(1-e super(-0.3659(1-0.6336))). Материал для исследований был собран в августе-октябре 1992 г. в 19 рейсе РТМ-А «Сапун-Гора» в районе Новой Зеландии. Отолигы взвешивались на электрических весах с точностью до 0,0001 г, а затем просматривались визуально, для этого был использован бинокулярный микроскоп МБС-1. Затем полученные данные подвергались статистической обработке. Всего было обработано 398 пар отолитов. В результате выделено 10 возрастных групп. Максимальный возраст рыб в уловах 13 лет. В пробах отсутствуют рыбы в возрасте 10 и 11 лет. Не обнаружено существенных различий в росте самок и самцов. Самцы в любом возрасте несколько меньших размеров. Для южной путассу из района Новой Зеландии этот возраст равен 3,5 лет и расчётная длина рыб 47,34 см. Таким образом, по своим показателям южная путассу относится к быстрорастущим рыбам, за 4 года она достигает 48-50 см. В возрасте 4-5 лет темп роста немного стабилизируется, а затем замедляется. Параметры оптимальной эксплуатации определены по методу Катти и Касима. Возраст её начала равен 4,4 лет. Относительно постоянный темп роста южной путассу дал возможность составить размерно-возрастной ключ для данного района. Published 2019-11-20T10:36:18Z 2019-11-20T10:36:18Z 1994 Journal Contribution Non Refereed УДК 597.562+639.2.053.7:591.134 http://hdl.handle.net/1834/15808 ru p.84 New Zealand Новая Зеландия |
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Length-age structure Catch composition Micromesistius australis Age composition Equations Females Males Возрастной состав Состав уловов Самки Самцы Length-age structure Catch composition Micromesistius australis Age composition Equations Females Males Возрастной состав Состав уловов Самки Самцы |
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Length-age structure Catch composition Micromesistius australis Age composition Equations Females Males Возрастной состав Состав уловов Самки Самцы Length-age structure Catch composition Micromesistius australis Age composition Equations Females Males Возрастной состав Состав уловов Самки Самцы Russelo, I.B. Size-age composition of southern poutassou (Micromesistius australis) catches in New Zealand area |
description |
Length-age composition of catches of the Southern blue whiting (Micromesistius australis) in the New Zealand waters were studied. The material was collected from August to October 1992 aboard the FV Sapun Gora (19th cruise). A total of 398 pairs of otoliths were treated. Ten age groups were distinguished. The maximum fish age in catches is 13 years. 10- and 11-year-old fish are absent from the samples. No significant difference is found in the growth of males and females. Males at any age are somewhat smaller than females. It was ascertained that the linear growth of the Southern blue whiting from the region of New Zealang was described by the Von Bertalanffy's growth equation as follows: L = 61.41(1-e super(-0.3659(1-0.6336))). |
author2 |
Yakovlev, V.N. |
author_facet |
Yakovlev, V.N. Russelo, I.B. |
format |
Journal Contribution |
topic_facet |
Length-age structure Catch composition Micromesistius australis Age composition Equations Females Males Возрастной состав Состав уловов Самки Самцы |
author |
Russelo, I.B. |
author_sort |
Russelo, I.B. |
title |
Size-age composition of southern poutassou (Micromesistius australis) catches in New Zealand area |
title_short |
Size-age composition of southern poutassou (Micromesistius australis) catches in New Zealand area |
title_full |
Size-age composition of southern poutassou (Micromesistius australis) catches in New Zealand area |
title_fullStr |
Size-age composition of southern poutassou (Micromesistius australis) catches in New Zealand area |
title_full_unstemmed |
Size-age composition of southern poutassou (Micromesistius australis) catches in New Zealand area |
title_sort |
size-age composition of southern poutassou (micromesistius australis) catches in new zealand area |
publishDate |
1994 |
url |
http://hdl.handle.net/1834/15808 |
work_keys_str_mv |
AT russeloib sizeagecompositionofsouthernpoutassoumicromesistiusaustraliscatchesinnewzealandarea AT russeloib razmernovozrastnojsostavulovovûžnojputassumicromesistiusaustralisizrajonanovojzelandii |
_version_ |
1756076889938591744 |