Reproductive Aging of African Catfish in Aquaculture

The work is devoted to the study of reproductive aging of African catfish in the conditions of industrial aquaculture. The problem is urgent, because industrial aquaculture changes the biology of African catfish so much that it loses its ability to reproduce naturally. The offspring of African catfi...

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Autores principales:	Lyubomirova Vaselina, Romanova Elena, Romanov Vasily, Shadieva Ludmila
Formato:	article
Lenguaje:	EN FR
Publicado:	EDP Sciences 2021
Materias:	Microbiology QR1-502 Physiology QP1-981 Zoology QL1-991
Acceso en línea:	https://doaj.org/article/9c954172811e4e7f8a8c57b972703baf
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spelling	oai:doaj.org-article:9c954172811e4e7f8a8c57b972703baf2021-11-08T15:17:24ZReproductive Aging of African Catfish in Aquaculture2117-445810.1051/bioconf/20213700110https://doaj.org/article/9c954172811e4e7f8a8c57b972703baf2021-01-01T00:00:00Zhttps://www.bio-conferences.org/articles/bioconf/pdf/2021/09/bioconf_fies2021_00110.pdfhttps://doaj.org/toc/2117-4458The work is devoted to the study of reproductive aging of African catfish in the conditions of industrial aquaculture. The problem is urgent, because industrial aquaculture changes the biology of African catfish so much that it loses its ability to reproduce naturally. The offspring of African catfish can be obtained only with the use of hormonal inducers of gametogenesis. Questions of age selection of producers and age composition of breeding stock in this type of fish are still open. In practice, we have to face the facts of poor quality of sexual products in primary spawning or old females and males. The aim of the study was a comparative assessment of age-related variability of reproductive properties of female and male African catfish in the conditions of industrial aquaculture. The results of our study showed the presence of age-related dynamics in the quality of sexual products in African catfish. Age-dependent differences in the quality and fertilization of eggs, the viability of embryos and larvae, their size, and the quality of offspring were established. When studying the properties of sexual products in fish of different ages, differences in morphometric and physiological parameters were found for a complex of indicators such as the size and diameter of eggs, sperm concentration, and the number of viable spermatozoa. Evaluation of the influence of parents age on the viability of offspring in the embryonic and postembryonic periods revealed that this indicator is the lowest in first – spawning fish, and the highest in middle-aged fish. The Russian Foundation for Basic Research has supported our study with the grant No. 18-416-730005.Lyubomirova VaselinaRomanova ElenaRomanov VasilyShadieva LudmilaEDP SciencesarticleMicrobiologyQR1-502PhysiologyQP1-981ZoologyQL1-991ENFRBIO Web of Conferences, Vol 37, p 00110 (2021)
institution	DOAJ
collection	DOAJ
language	EN FR
topic	Microbiology QR1-502 Physiology QP1-981 Zoology QL1-991
spellingShingle	Microbiology QR1-502 Physiology QP1-981 Zoology QL1-991 Lyubomirova Vaselina Romanova Elena Romanov Vasily Shadieva Ludmila Reproductive Aging of African Catfish in Aquaculture
description	The work is devoted to the study of reproductive aging of African catfish in the conditions of industrial aquaculture. The problem is urgent, because industrial aquaculture changes the biology of African catfish so much that it loses its ability to reproduce naturally. The offspring of African catfish can be obtained only with the use of hormonal inducers of gametogenesis. Questions of age selection of producers and age composition of breeding stock in this type of fish are still open. In practice, we have to face the facts of poor quality of sexual products in primary spawning or old females and males. The aim of the study was a comparative assessment of age-related variability of reproductive properties of female and male African catfish in the conditions of industrial aquaculture. The results of our study showed the presence of age-related dynamics in the quality of sexual products in African catfish. Age-dependent differences in the quality and fertilization of eggs, the viability of embryos and larvae, their size, and the quality of offspring were established. When studying the properties of sexual products in fish of different ages, differences in morphometric and physiological parameters were found for a complex of indicators such as the size and diameter of eggs, sperm concentration, and the number of viable spermatozoa. Evaluation of the influence of parents age on the viability of offspring in the embryonic and postembryonic periods revealed that this indicator is the lowest in first – spawning fish, and the highest in middle-aged fish. The Russian Foundation for Basic Research has supported our study with the grant No. 18-416-730005.
format	article
author	Lyubomirova Vaselina Romanova Elena Romanov Vasily Shadieva Ludmila
author_facet	Lyubomirova Vaselina Romanova Elena Romanov Vasily Shadieva Ludmila
author_sort	Lyubomirova Vaselina
title	Reproductive Aging of African Catfish in Aquaculture
title_short	Reproductive Aging of African Catfish in Aquaculture
title_full	Reproductive Aging of African Catfish in Aquaculture
title_fullStr	Reproductive Aging of African Catfish in Aquaculture
title_full_unstemmed	Reproductive Aging of African Catfish in Aquaculture
title_sort	reproductive aging of african catfish in aquaculture
publisher	EDP Sciences
publishDate	2021
url	https://doaj.org/article/9c954172811e4e7f8a8c57b972703baf
work_keys_str_mv	AT lyubomirovavaselina reproductiveagingofafricancatfishinaquaculture AT romanovaelena reproductiveagingofafricancatfishinaquaculture AT romanovvasily reproductiveagingofafricancatfishinaquaculture AT shadievaludmila reproductiveagingofafricancatfishinaquaculture
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Reproductive Aging of African Catfish in Aquaculture

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