Studies of Gro wth Sexual Dimorphism in Vertebrate

Chinese Journal of Zoology 2009,44 (2) :141 146 3 ( 510275 ; 516007) :, : ; :Q955 :A :025023263 (2009) 022141206 Studies of Gro wth Sexual Dimorphism in Vertebrate MA Xi2Lan ZHANG Yong ZHOU Li2Bin LIU Xiao2Chun LIN Hao2Ran 3 ( Institute of Aquatic Economic Animals & Guangdong Provincial Key Laboratory for Aquatic Economical Animal, Sun Yat2Sen University, Guangzhou 510275 ; Department of Life Science, Huizhou University, Huizhou 516007, China) Abstract :This paper reviewed the progress of studies on growth of sexual dimorphism in vertebrate. The reasons of growth sexual dimorphism in vertebrate including feeding and digesting, energy allocation between growth and reproduction,species heredity,genotype and phenotype,steroid level,genes expressions of growth axis are analyzed. Key words :Vertebrate ; Growth sexual dimorphism,, (sexual size dimorphism,ssd) ( ) (growth sexual dimorphism,gsd) [1 ], [2 ] ; ( ) ( ),, (, ), [1,2 ], [3 5 ] [6 9 ] [10 ] [11 22 ] [23 29 ] 1,, ( Oreochromis niloticus),,, 863 (No. 2006AA10A402), ( No. 20040558012), (2004) (C20710201) ; 3,E2mail :lsslhr @mail. sysu. edu. cn ;,, ; : ; E2mail :mxl @hzu. edu. cn :2008207201, :2008212225

142 Chinese Journal of Zoology 44 ( Lepomis macrochirus), [2 ] 2,,, ( Phrynocephalus theobaldi) 2170 g,,, [3 ] ( P. vlangalii) 1, :,,,,, ;,,,, [4 ] ( Siniperca chuats) 170 g, ; 170 835 g,,, 2, 1,,,,,, [5 ] [10 ] 3, ( Trionyx sinensis) [6 ], ( Chinemys reevesii) [7 ] ( Cuora trif asciata) [8 ],,,,85 %, [6 ],, 2 3 [7 ] ( Mauremys mutica),, [8 ],,, : ( Sceloporus jarrovii) ( S. virgatus), [9 ] 4,, XX [10 ], ;,,,

2 : 143, ;,,, (insulin2like growth factor, IGF2I), E 2 IGF2I, ; DHT IGF2I,,, E 2 IGF2I mrna,dht, Toguyeni [10 ],, IGF2I, [1,5 ], (mxy),, (mxy), (mxx),, 5 112 (112 ketotestosterone, 112KT) E 2 [11,12] [10 ] 112KT E 2 (testosterone, T),, [10 ],,,,,, ( Oreochromis mossambicus) [15,16 ] SSD Cox [9] ( Oncorhynchus kisutch ) [17 ] ( Cyprinus ( SSD ) carpio) [18 ] [19 ],, ( Salmo gairdneri ) [20 ] ( Perca fluviatilis),,,,, ( ( 17 2 methyltestosterone,mt), MT SSD ) [13] SSD, (17 2estradiol, E 2 ), ( dihydrotestosterone,dht ) [14 ] ( Rattus norvegicus) ( E 2 ), MT, [21,22 ], 6

144 Chinese Journal of Zoology 44 mrna [23 ] 611 ( growth hormone, GH), GH mrna GH, IGF2I [25 ] [10 ] GH, 612 ( IGF2I IGFBPs) IGF2I GH : 3 4 h, 1 115 h, IGF2I (insulin2 ; like growth factor binding proteins,igfbps) GH,,,, GH GH ( Merycoidodon gracilis ) ( Bos (growth hormone taurus), IGF2I releasing hormone, GHRH) [10 ], (somatostatin,ss) IGF2I GHRH SS IGF2I GHRH GH GH IGF2I, ( Mus musculus) GH GH, [10 ], E 2, IGF2I IGF2I GH IGF2I ( E 2 ), E 2 IGFBP23,GH 2 3, GH, E 2, GH, IGFBP23 IGFBP21, T IGFBP2I IGFBP22, IGFBP23 DHT,, MT IGF2I mrna (androgen receptor,ar), Ξ (estrogen receptor, ER) ( T E 2 ) T 112KT GH, GH mrna GH IGF2I GH,, ( Anguilla anguilla) GH mrna,, [24 ], GH mrna Ξ.. :,2007.

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