The features of narrow-clawed crayfish (Pontastacus leptodactylus Eschscholtz, 1823) population development in Lake Sevan during 1996–2018

The narrow-clawed crayfish, an invasive hydrobiont of Lake Sevan appeared in the lake due to accidental introduction having occupied almost the entire territory of Lake Sevan, finding favorable conditions for its existence. Investigation of the dynamics of narrow-clawed crayfish population developme...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Evelina Kh. Ghukasyan, Hranush F. Melkonyan, Lilit G. Stepanyan, Norik S. Badalyan
Formato:	article
Lenguaje:	EN RU
Publicado:	Cherepovets State University 2019
Materias:	lake sevan narrow-clawed crayfish crayfishing commercial stocks Environmental sciences GE1-350
Acceso en línea:	https://doaj.org/article/32d166b1e29d4d2c9795224700d7502f
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:32d166b1e29d4d2c9795224700d7502f
record_format	dspace
spelling	oai:doaj.org-article:32d166b1e29d4d2c9795224700d7502f2021-12-01T11:40:41ZThe features of narrow-clawed crayfish (Pontastacus leptodactylus Eschscholtz, 1823) population development in Lake Sevan during 1996–201810.23859/estr-1905132619-094X2619-0931https://doaj.org/article/32d166b1e29d4d2c9795224700d7502f2019-09-01T00:00:00Zhttp://en.ecosysttrans.com/publikatsii/ecosystem-transformation-volume-2-no-3-2019/the-features-of-narrow-clawed-crayfish-pontastacus-leptodactylus-eschscholtz-1823-population-develop/https://doaj.org/toc/2619-094Xhttps://doaj.org/toc/2619-0931The narrow-clawed crayfish, an invasive hydrobiont of Lake Sevan appeared in the lake due to accidental introduction having occupied almost the entire territory of Lake Sevan, finding favorable conditions for its existence. Investigation of the dynamics of narrow-clawed crayfish population development showed that since 2014 there has been a tendency in reduction of the crayfish population, which was the result of improper organization of the fishing process and deterioration of the ecosystem. Although the main factors limiting the distribution of crayfish in natural conditions are oxygen deficiency at great depths and the type of the bottom sediments, in recent years, the reason for reducing the stocks of narrow-clawed crayfish is the increased anthropogenic impact, in particular, the use of incorrect fishing gear.Evelina Kh. GhukasyanHranush F. MelkonyanLilit G. StepanyanNorik S. BadalyanCherepovets State Universityarticlelake sevannarrow-clawed crayfishcrayfishingcommercial stocksEnvironmental sciencesGE1-350ENRUТрансформация экосистем, Vol 2, Iss 3, Pp 24-31 (2019)
institution	DOAJ
collection	DOAJ
language	EN RU
topic	lake sevan narrow-clawed crayfish crayfishing commercial stocks Environmental sciences GE1-350
spellingShingle	lake sevan narrow-clawed crayfish crayfishing commercial stocks Environmental sciences GE1-350 Evelina Kh. Ghukasyan Hranush F. Melkonyan Lilit G. Stepanyan Norik S. Badalyan The features of narrow-clawed crayfish (Pontastacus leptodactylus Eschscholtz, 1823) population development in Lake Sevan during 1996–2018
description	The narrow-clawed crayfish, an invasive hydrobiont of Lake Sevan appeared in the lake due to accidental introduction having occupied almost the entire territory of Lake Sevan, finding favorable conditions for its existence. Investigation of the dynamics of narrow-clawed crayfish population development showed that since 2014 there has been a tendency in reduction of the crayfish population, which was the result of improper organization of the fishing process and deterioration of the ecosystem. Although the main factors limiting the distribution of crayfish in natural conditions are oxygen deficiency at great depths and the type of the bottom sediments, in recent years, the reason for reducing the stocks of narrow-clawed crayfish is the increased anthropogenic impact, in particular, the use of incorrect fishing gear.
format	article
author	Evelina Kh. Ghukasyan Hranush F. Melkonyan Lilit G. Stepanyan Norik S. Badalyan
author_facet	Evelina Kh. Ghukasyan Hranush F. Melkonyan Lilit G. Stepanyan Norik S. Badalyan
author_sort	Evelina Kh. Ghukasyan
title	The features of narrow-clawed crayfish (Pontastacus leptodactylus Eschscholtz, 1823) population development in Lake Sevan during 1996–2018
title_short	The features of narrow-clawed crayfish (Pontastacus leptodactylus Eschscholtz, 1823) population development in Lake Sevan during 1996–2018
title_full	The features of narrow-clawed crayfish (Pontastacus leptodactylus Eschscholtz, 1823) population development in Lake Sevan during 1996–2018
title_fullStr	The features of narrow-clawed crayfish (Pontastacus leptodactylus Eschscholtz, 1823) population development in Lake Sevan during 1996–2018
title_full_unstemmed	The features of narrow-clawed crayfish (Pontastacus leptodactylus Eschscholtz, 1823) population development in Lake Sevan during 1996–2018
title_sort	features of narrow-clawed crayfish (pontastacus leptodactylus eschscholtz, 1823) population development in lake sevan during 1996–2018
publisher	Cherepovets State University
publishDate	2019
url	https://doaj.org/article/32d166b1e29d4d2c9795224700d7502f
work_keys_str_mv	AT evelinakhghukasyan thefeaturesofnarrowclawedcrayfishpontastacusleptodactyluseschscholtz1823populationdevelopmentinlakesevanduring19962018 AT hranushfmelkonyan thefeaturesofnarrowclawedcrayfishpontastacusleptodactyluseschscholtz1823populationdevelopmentinlakesevanduring19962018 AT lilitgstepanyan thefeaturesofnarrowclawedcrayfishpontastacusleptodactyluseschscholtz1823populationdevelopmentinlakesevanduring19962018 AT noriksbadalyan thefeaturesofnarrowclawedcrayfishpontastacusleptodactyluseschscholtz1823populationdevelopmentinlakesevanduring19962018 AT evelinakhghukasyan featuresofnarrowclawedcrayfishpontastacusleptodactyluseschscholtz1823populationdevelopmentinlakesevanduring19962018 AT hranushfmelkonyan featuresofnarrowclawedcrayfishpontastacusleptodactyluseschscholtz1823populationdevelopmentinlakesevanduring19962018 AT lilitgstepanyan featuresofnarrowclawedcrayfishpontastacusleptodactyluseschscholtz1823populationdevelopmentinlakesevanduring19962018 AT noriksbadalyan featuresofnarrowclawedcrayfishpontastacusleptodactyluseschscholtz1823populationdevelopmentinlakesevanduring19962018
_version_	1718405226242768896

The features of narrow-clawed crayfish (Pontastacus leptodactylus Eschscholtz, 1823) population development in Lake Sevan during 1996–2018

Ejemplares similares