Ocean acidification increases polyspermy of a broadcast spawning bivalve species by hampering membrane depolarization and cortical granule exocytosis
文献类型： 外文期刊
作者： Han, Yu 1 ; Shi, Wei 1 ; Tang, Yu 1 ; Zhao, Xinguo 1 ; Du, Xueying 1 ; Sun, Shuge 1 ; Zhou, Weishang 1 ; Liu, Guangxu 1 ;
作者机构： 1.Zhejiang Univ, Coll Anim Sci, Hangzhou 310058, Peoples R China
2.Chinese Acad Fishery Sci, Yellow Sea Fisheries Res Inst, Qingdao 266071, Peoples R China
关键词： Ocean acidification; Broadcast spawning; Polyspermy; Membrane depolarization; Cortical granule exocytosis
期刊名称：AQUATIC TOXICOLOGY （ 影响因子：4.964； 五年影响因子：5.071 ）
ISSN： 0166-445X
年卷期： 2021 年 231 卷
页码：
收录情况： SCI
摘要： Ensuring that oocytes are fertilized by a single sperm during broadcast spawning is crucial for the fertilization success of many marine invertebrates. Although the adverse impacts of ocean acidification (OA) on various marine species have been revealed in recent years, its impact on poly-spermy and the underlying mechanisms involved remain largely unknown. Therefore, in the present study, the effect of OA on polyspermy risk was assessed in a broadcast spawning bivalve, Tegillarca granosa. In addition, the impacts of OA on the two polyspermy blocking processes, the fast block (membrane depolarization) and the permanent block (cortical reaction), were investigated. The results show that the exposure of oocytes to two future OA scenarios (pH 7.8 and pH 7.4) leads to significant increases in polyspermy risk, about 1.70 and 2.38 times higher than the control, respectively. The maximum change in the membrane potential during oocyte membrane depolarization markedly decreased to 15.79 % (pH 7.8) and 34.06 % (pH 7.4) of the control value. Moreover, the duration of oocyte membrane depolarization was significantly reduced to approximately 63.38 % (pH 7.8) and 21.91 % (pH 7.4) of the control. In addition, cortical granule exocytosis, as well as microfilament migration, were significantly arrested by OA treatment. Exposure to future OA scenarios also led to significant reductions in the ATP and Ca2+ content of the oocytes, which may explain the hampered polyspermy blocking. Overall, the present study suggests that OA may significantly increase polyspermy risk in T. granosa by inhibiting membrane depolarization and arresting cortical granule exocytosis.
- 相关文献
作者其他论文 更多>>
-
Polystyrene nanoplastics affected the nutritional quality of Chlamys farreri through disturbing the function of gills and physiological metabolism: Comparison with microplastics
作者：Sun, Yejiao;Zhao, Xinguo;Sui, Qi;Sun, Xuemei;Zhu, Lin;Chen, Bijuan;Qu, Keming;Xia, Bin;Sun, Yejiao;Zhao, Xinguo;Sui, Qi;Sun, Xuemei;Zhu, Lin;Chen, Bijuan;Xia, Bin;Sun, Yejiao;Booth, Andy M.
关键词：Nanoplastics; Microplastics; Scallops; Mariculture; Oxidative stress; Neurotoxicity
-
Bioaccumulation of polycyclic aromatic hydrocarbons and their human health risks depend on the characteristics of microplastics in marine organisms of Sanggou Bay, China
作者：Sui, Qi;Sun, Xuemei;Zhu, Lin;Zhao, Xinguo;Xia, Bin;Qu, Keming;Sui, Qi;Sun, Xuemei;Zhu, Lin;Zhao, Xinguo;Xia, Bin;Yang, Xiaobin;Feng, Zhihua
关键词：Microplastics; Bioaccumulation; Vector effect; Health risk assessment
-
Secondary PVC microplastics are more toxic than primary PVC microplastics to Oryzias melastigma embryos
作者：Xia, Bin;Sui, Qi;Du, Yushan;Jing, Jing;Zhu, Lin;Zhao, Xinguo;Sun, Xuemei;Chen, Bijuan;Qu, Keming;Xia, Bin;Zhu, Lin;Zhao, Xinguo;Sun, Xuemei;Chen, Bijuan;Du, Yushan;Wang, Liang;Booth, Andy M.;Xing, Baoshan
关键词：Secondary microplastics; Oxygen flow; Teratogenic effects; Hypoxia; Gene expression
-
UV-B radiation enhances the toxicity of TiO2 nanoparticles to the marine microalga Chlorella pyrenoidosa by disrupting the protection function of extracellular polymeric substances
作者：Zhu, Lin;Feng, Sulan;Shang, Congcong;Sun, Xuemei;Zhao, Xinguo;Chen, Bijuan;Qu, Keming;Xia, Bin;Zhu, Lin;Tang, Xuexi;Sun, Xuemei;Zhao, Xinguo;Chen, Bijuan;Xia, Bin;Booth, Andy M.;Shang, Congcong;Xiao, Hui;Tang, Xuexi
关键词：
-
Ecological risk assessment of metallic nanoparticles on the marine environments: Species sensitivity distributions analysis
作者：Feng, Sulan;Zhu, Lin;Zhao, Xinguo;Sui, Qi;Sun, Xuemei;Chen, Bijuan;Qu, Keming;Xia, Bin;Zhu, Lin;Zhao, Xinguo;Sui, Qi;Sun, Xuemei;Chen, Bijuan;Xia, Bin
关键词：Nanoparticles; marine species; species sensitivity distribution; risk assessment; environment carrying capacity
-
Mussel Byssal Attachment Weakened by Anthropogenic Noise
作者：Zhao, Xinguo;Sun, Xuemei;Zhang, Yan;Zhu, Lin;Sui, Qi;Xia, Bin;Qu, Keming;Chen, Bijuan;Zhao, Xinguo;Sun, Xuemei;Zhang, Yan;Zhu, Lin;Sui, Qi;Xia, Bin;Chen, Bijuan;Sun, Shuge;Shi, Wei;Liu, Guangxu
关键词：anthropogenic noise; mussel; byssal thread; attachment; mechanical performance; gene expression
-
Factors influencing the occurrence and distribution of microplastics in coastal sediments: From source to sink
作者：Sun, Xuemei;Chen, Bijuan;Liu, Shufang;Zhu, Lin;Zhao, Xinguo;Qu, Keming;Xia, Bin;Sun, Xuemei;Chen, Bijuan;Zhu, Lin;Zhao, Xinguo;Xia, Bin;Wang, Teng;Booth, Andy M.;Wang, Rongyuan
关键词：Microplastics; Diversity index; Grain size; Semi-enclosed bay; Coastal zone
