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Mass selection for small‐sized cysts in A rtemia franciscana produced in V inh C hau salt ponds, V ietnam
Author(s) -
Van Nguyen Thi Hong,
Hoa Nguyen,
Bossier Peter,
Sorgeloos Patrick,
Stappen Gilbert
Publication year - 2014
Publication title -
aquaculture research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.646
H-Index - 89
eISSN - 1365-2109
pISSN - 1355-557X
DOI - 10.1111/are.12105
Subject(s) - brine shrimp , biology , selection (genetic algorithm) , population , heritability , control line , cyst , zoology , veterinary medicine , ecology , genetics , pathology , artificial intelligence , computer science , medicine , demography , transmission line , sociology , electrical engineering , engineering
Unidirectional mass truncation selection for small‐sized cysts was carried out on brine shrimp ( Artemia franciscana Kellogg 1906), Vinh Chau strain, Vietnam, through cyst sieving and then culturing the selected individuals (<5% of the population) under field and laboratory conditions over two successive generations (F 1 and F 2 ). The results showed that at both culture scales, the cyst size of the selected line was smaller ( P < 0.05) compared with the control (non‐selected) line, illustrating that there was a response to selection. The cyst size decreased about 3% per generation and the accumulated gain on the target trait was in the range 5.82–6.07% at the end of the selection process compared with the base population. The realized heritability estimation (h 2 ) for cyst size was 0.23 ± 0.06 and 0.74 ± 0.19 in the field trials and 0.34 and 0.51 in the laboratory test for the F 1 and F 2 generation respectively. The variations found between the respective trials may be explained as the result of environmental interaction with the selection process, but the results show that a selection program for small‐sized cysts in A rtemia by mass selection is possible.