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The study of ovary development and steroid hormone changes in Alosa sapidissima
Hong Lei,Li Zhaoxin,Chen Chao,Guo Zhenglong,Wang Weifang,Lei Jilin
Strategic Study of CAE 2014, Volume 16, Issue 9, Pages 86-92
In this study, the morphological changes of ovary development and variation of correlated plasma sex steroids levels were detected in Alosa sapidissima. The result shown that Alosa sapidissima belongs to the non-synchronized multiple batch spawner; based on size, shape and external color, the development of ovary was divided into six stages; according to changes of inner structures, yolk accumulating and development of follicle cells, the oogenesis could be divided into six phases. There were no significant differences about hepatosomatic index (HSI) and condition factor (CF) during the ovarian maturation cycle, but gonadosomatic index (GSI) and 17β- estradiol (E2) were found to increase during the peak phase of vitellogenic growth corresponding to the ovary development.
Keywords: Alosa sapidissima ovary development oogenesis histology morphology steroid hormone
A multi-integrated approach on toxicity effects of engineered TiO
Ana PICADO,Susana M. PAIXÃO,Liliana MOITA,Luis SILVA,Mário S. DINIZ,Joana LOURENÇO,Isabel PERES,Luisa CASTRO,José Brito CORREIA,Joana PEREIRA,Isabel FERREIRA,António Pedro Alves MATOS,Pedro BARQUINHA,Elsa MENDONCA
Frontiers of Environmental Science & Engineering 2015, Volume 9, Issue 5, Pages 793-803 doi: 10.1007/s11783-015-0775-0
Keywords: ecotoxicity enzymatic analysis histology transmission electron microscopy (TEM) TiO2-nanoparticles
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The study of ovary development and steroid hormone changes in Alosa sapidissima
Hong Lei,Li Zhaoxin,Chen Chao,Guo Zhenglong,Wang Weifang,Lei Jilin
Journal Article