Envelope surface ultrastructure and specific gravity of artificially fertilized Pacific cod Gadus macrocephalus eggs
文献类型： 外文期刊
作者： Bian, X. 1 ; Zhang, X. 2 ; Sakurai, Y. 3 ; Jin, X. 1 ; Gao, T. 2 ; Wan, R. 1 ; Yamamoto, J. 3 ;
作者机构： 1.CAFS, Key Lab Sustainable Dev Marine Fisheries, Minist Agr, Yellow Sea Fisheries Res Inst, Qingdao 266071, Peoples R China
2.Ocean Univ China, Key Lab Mariculture, Minist Educ, Qingdao 266003, Peoples R China
3.Hokkaido Univ, Fac Fisheries, Hakodate, Hokkaido 0418611, Japan
关键词： adhesiveness;developmental changes;embryonic development;functional properties;micropyle;SEM
期刊名称：JOURNAL OF FISH BIOLOGY （ 影响因子：2.051； 五年影响因子：2.25 ）
ISSN： 0022-1112
年卷期： 2014 年 84 卷 2 期
页码：
收录情况： SCI
摘要： The envelope surface ultrastructure and specific gravity of artificially fertilized eggs of the Pacific cod Gadus macrocephalus were examined. The unfertilized, demersal and slightly adhesive eggs of G. macrocephalus were almost spherical and had no oil globules. Wrinkled envelope surface with elaborated hexagonal reticulated patterns and type I micropyle were observed under a scanning electron microscope. The adhesiveness of the eggs was lost at the blastodermal-cap stage after fertilization. The micropylar canal was sealed by secretion of the perivitelline fluid, and the entire surface became rough. Numerous bacilli were deposited at the micropyle and the outer envelope surface at the late germ-ring stage and at the embryo five-eighths around the yolk stage. The micropyle was completely deformed at the embryo seven-eighths around the yolk stage. The specific gravity of the fertilized G. macrocephalus eggs ranged from c. 1.0316 to 1.0454. These values, however, sharply decreased towards the end stages of egg development to produce pelagic larvae. The ultrastructural changes in the micropyle and envelope surface of the G. macrocephalus eggs protected the embryo from microorganism infections and mechanical stress during the long incubation period. The adhesiveness and specific gravity of the eggs influenced their dispersion potential. (C) 2014 The Fisheries Society of the British Isles
- 相关文献
作者其他论文 更多>>
-
Genomic and phylogenetic characterization of a bunya-like virus from the freshwater Chinese mitten crab Eriocheir sinensis
作者：Ame, K. H.;Shui, Y.;Xu, Z.;Serwadda, A.;Shen, H.;Huang, P.;Zhang, X.;Ame, K. H.;Serwadda, A.;Shen, H.
关键词：Eriocheir sinensis; tremor disease; bunyavirus; EsBV; genome sequences
-
Correlation between lipid and carotenoid synthesis and photosynthetic capacity in Haematococcus pluvialis grown under high light and nitrogen deprivation stress
作者：Liang, C.;Zhai, Y.;Zhang, W.;Yu, J.;Xu, D.;Ye, N.;Zhang, X.;Wang, Y.
关键词：Carotenoid;Haematococcus pluvialis;Lipid production;Photosynthetic capacity;Stress conditions
-
Role of energy input model on the remediation of the p-Nitrophenol contaminated over-wet soil by pulsed corona discharge plasma
作者：Zhang, X.;Wang, T. C.;Lu, N.;Li, J.;Wu, Y.;Wang, C. H.
关键词：
-
Primary genome scan for complex body shape-related traits in the common carp Cyprinus carpio
作者：Zhang, Y.;Wang, S.;Li, J.;Jiang, L.;Xu, P.;Sun, X.;Zhang, X.;Lu, C.;Sun, X.;Lu, C.;Wan, Y.
关键词：body size traits;linkage mapping;quantitative trait locus
-
Duplicated CCAAT/enhancer-binding protein beta (C/EBP beta) gene: Transcription and methylation changes in response to dietary betaine in Landes goose liver
作者：Yu, S. L.;Li, Q. F.;Xie, Z.;Su, S. Y.;Zhang, X.
关键词：C/EBP beta;betaine;methylation;lipometabolism;Landes goose
-
Monitoring Nitric Oxide Release in Single Cells by Capillary Electrophoresis with Laser-induced Fluorescence Detection
作者：Zhang, X.;Hui, Y.;Yu, H.;Cai, Y.;Yang, Q.;Zhang, W.;Jiang, P.;Jiao, B.
关键词：
-
Performance of DAMBO-P-H as a High Sensitive Fluorescence Indicator for Nitric Oxide
作者：Yang, Q.;Jiao, B.;Zhang, X.;Zhang, W.;Zhang, W.;Yang, Q.;Jiao, Y.;Wang, S.
关键词：
