Cytogenetic study of Artemia from Urmiah, Maharloo and Incheborun Lakes

Three populations of Artemia from Urmiah (West-Azarbaijan Province), Maharloo (Fars Province) and Incheborun (Golestan Province) Lakes in Iran were cytogenetically analyzed. In order to study the reproduction mode in Artemia populations, cyst samples reared for three successive generations (F^sub 1^...

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Bibliographic Details
Published in:Hydrobiologia 2004-11, Vol.529 (1), p.99-104
Main Authors: YARMOHAMMADI, M, POURKAZEMI, M
Format: Article
Language:English
Subjects:
Animal and plant ecology
Animal, plant and microbial ecology
Artemia
Biological and medical sciences
Bisexuality
Chromosomes
Crop science
Fresh water ecosystems
Freshwater
Fundamental and applied biological sciences. Psychology
General aspects
Lakes
Subpopulations
Synecology
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Summary:Three populations of Artemia from Urmiah (West-Azarbaijan Province), Maharloo (Fars Province) and Incheborun (Golestan Province) Lakes in Iran were cytogenetically analyzed. In order to study the reproduction mode in Artemia populations, cyst samples reared for three successive generations (F^sub 1^--F^sub 3^). The results obtained from rearing until maturation indicated that, there are two subpopulations of Artemia in Urmiah lake (bisexual and parthenogenetic). These two subpopulations have the same diploid chromosome number (2 n =42). The results obtained from rearing and cytogenetic analysis of Artemia from Maharloo and Incheborun Lakes showed that these two populations are parthenogenetic and their chromosome number is also 2 n=42. So far, no cytogenetic differences in ploidy level have been detected among the populations investigated in this study. Very small chromosomes with metacentric, submetacentric and telocentric morphology were observed in mitotic prometaphase cells, implying that chromosomes of Artemia may be monocentric. [PUBLICATION ABSTRACT]
ISSN:0018-8158
1573-5117
DOI:10.1007/s10750-004-5236-x