The medium2term growth and development of hybrid bet ween Chinese and Japanese populations of Chlamys farreri

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1 JOURNAL OF FISHERIES OF CHINA Vol. 27, No. 3 J une, 2003 : (2003) ,3, 2, 1, 2, 1 1, (1., ; 2., ; 3., ) : (C) (J ) 9 ( ), ; % 50 %, J C C J ; > > > ;,18, 2, : ; ; ; : S :A The medium2term growth and development of hybrid bet ween Chinese and Japanese populations of Chlamys farreri LIU Xiao2lin 1,3, CHANG Ya2qing 2, XIANG Jian2hai 1, LIU Xian2jie 2, LI Fu2hua 1, LIU Bao2zhong 1 (1. Experimental Marine Biology Laboratory, Institute of Oceanology, Chinese Academy of Sciences, Qingdao , China ; 2. Key Lab of Marine Aquaculture and Biotchnology of Ministry of Agriculture, Dalian Fisheries University, Dalian , China ; 3. College of Animal Science and Technology, Northwest Science and Technology University of Agriculture and Forestry, Yangling , China) Abstract : Based on the research of juvenile ( 9 months ) growth and survival of three populations of Chlamys farreri from two different geographic areas in Dalian of China and Ishinomaki of Japan and their F 1 hybrids derived from Chinese population (C) Japanese population (J ) and Japanese population (J ) Chinese population ( C), the study of the medium2term (11,13,16,18 months) growth and development of C. farreri was carried out. The four determined results indicated that there existed heterosis of varying degrees (5 % - 50 %) for growth : : ( G ) ( ) : ( ),,,, E2mail com : ( ),,,, Tel : 转载

2 in two types of F 1 hybrids and the offspring derived from J C had a higher heterosis than the offspring derived from C J ; the uptrend among traits are > > > ; Japanese population slightly exceeds Chinese population ; and season influence on the daily increment and growth rate of each trait of C. farreri was highly significant and it is losing weight in a state of survival in winter (18 month). Key words : Chlamys f arreri ; population ; hybridization ; medium2term growth and development ; heterosis [1, ] [2-9], [10 ] [11-13], [13 ], [14 ],, [15 [15 ] : 9 ], 11 ( ) 13 ( ) 16 ( ) 18 ( ) 60d ,, ; ( X) (S), H ( %), H( %) = 1 F 1-2 ( P 1 + P 2 ) 1 2 ( P 1 + P 2 ) 100, F 1 P 1 P 2 1 2, H( %) F 1 : = ( W 2 - W 1 ) ( t 2 - t 1 ), t 1 t 2, W 1 ( ), W 2

3 3 : ( C) ( J ) F 1 [ F 1 (C J ) ] [ F 1 ( F 1 (J C ) ]9 ( ), (9 18 ) ( ), ( ) 1 1 F 1 ( 9 18 ) Tab. 1 Growth and heterosis comparison of Chinese population and Japanese population to its hybrids at the medium2term ( 9-18 months) in Chlamys farreri ( C) F 1 ( %) F 1 ( %) (J) Chinese population ( C J ) heterosis (J C ) heterosis Japanese population age character H H X S X S X S X S months months months months F 1, 5 % 50 %, F 1 (J C ), F 1 (C J ),, % > % > % > %

4 (9 18 ) , (11 ),, 1 (18 ),, 13 (8 ), 11, 1,, 2,,,, J C C J,, mg d - 1, cm d - 1, cm d - 1, cm d F 1 ( 9 18 ) Tab. 2 Growth rate comparison of Chinese ( wild and culture) population and Japanese population with population month ages average (cmm d - 1 ) C F 1 C J F 1 J C J its hybrids at the medium2term ( 9-18 months) in C. farreri average (cmm d - 1 ) average (cmm d - 1 ) average (mg d - 1 ) :, cm d - 1 g d - 1, 1000, cmm d - 1 mg d - 1 ; 3 Notes : is daily increment and the primary unit centimeters/ day or grams/ day of increment of growth are magnified 1000 time for convenience to centimillimetre per day or milligram per day ; 3 Statistic data over whole medium2term 2. 3 (9 18 ) (9 18 )

5 3 : ,12,12,16, 18 2, cm, J C C J 1 2 Fig. 1 Wet weight growth comparison of their hybrids at the medium2term in C. farreri Fig. 2 Shell length growth comparison of their hybrids at the medium2term in C. farreri 2. 4 (16 ), (16 ) F 1 F 1,, 4 16, F 1,, 5 % 50 %,, > >,

6 Fig. 3 Wet weight growth comparison of hybrids at the end of 16 month in C. farreri 4 16 Fig. 4 Shell characters growth comparison of hybrids at the end of 16 month in C. farreri , 9 (4 ), 13 (8 ), 16 (11 ), 1 (18 ),1,,,,, 2, 2, : [ 1 ] Newkirk G F. Review of the genetics and the potential for selective breeding of commercially important bivalves [J ]. Aquac, 1980, 19, [ 2 ] Dickie L M,Boudreau P R, Freeman K R. Influences of stock and site on growth and mortality in the blue mussel Mytilus edulis[j ]. Can J Fish Aquat Sci, 1984, 41, [ 3 ] Kraeuter J N, Adamkewicz L, Castagna M, et al. Rib number and shell color in hybridized subspecies of the Atlantic bay scallop, Argopecten circularis[j ]. Nautilus, [ 4 ] Hawes R O, Scully K, Hidu H. Growth rate of two diverse populations of American oysters, Crassostrea virginica, and their reciprocal crosses [J ]. Aquaculture,Special Issue Genetics in Aquaculture, 327. [ 5 ] Martinez M C, DiMichele L. Possible genetic influences of the growth rate and survival of two populations of Crassostrea virginica [J ]. J

7 3 : 199 Shellfish Res, 1992, 11 :202. [ 6 ] Mackie L A, Ansell A D. Differences in reproductive ecology in natural and transplanted populations of Pecten maximus : evidence for the existence of separate stocks [J ]. J Exp Mar Biol Ecol, 1993, 169 : [ 7 ] Mallet A L, Haley L E. Growth rate and survival in pure population matings and crosses of the oyster Crassostrea virginica[j ]. Can J Fish Aquat Sci, 1983, 40 : [ 8 ] Stiles S. Conventional and experimental approaches to hybridization and inbreeding research in the oyster[ A ]. Proceedings of the ninth annual meeting of the World Mariculture Society[ C ]. Atlanta, Georgia, [ 9 ] Menzel W. Hybridization of oysters and clams[ A ]. Selection, hybridization and genetic engineering in aquaculture[ C ]. 1987, 2 : [10 ] Falconer D S. Introduction to quantitative genetics[ M ]. Longman Scientific and Technical, England (3rd edition), [11 ] Beaumont A R, Zouros E. In Scallops : Biology and aquaculture[ M ]. Elsevier Science, Amsterdam, [12 ] Koehn R K. The genetics and taxonomy of species in the genus Mytilus[J ]. Aquac, 1991, 4 : [13 ] Gaffney P M. Genetics and evolution of aquatic organisms[ M ]. Chapman and Hall, London, [14 ] Wang Z C. Study on seedling rear and culture test of Chlamys farreri[j ]. J Dalian Fish Coll, 1981,2 (1) : [. [J ].,1981, (1) :1-12. ] [15 ] Chang Y Q, Liu X L, Xiang J H, et al. The juvenile growth and survival of hybrid between Chinese and Japanese populations of the scallop ( Chlamys farreri) [J ]. J Fish China, 2002, 26 (5) : [,,,. [J ]., 2002, 26 (5) : ]

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