EFFECTS OF ENVIRONMENTAL FACTORS ON SPERM MOTILITY AND FERTILIZATION RATE OF PHASCOLOSOMA ESCULENTA

被引：2

作者：

Sheng, Z. ^{[1
]}

Jiang, J. -H. ^{[1
,2
]}

Jin, C. -H. ^{[1
]}

Xu, S. -J. ^{[1
]}

Zhu, J. -Q. ^{[1
]}

机构：

[1] Ningbo Univ, Sch Marine Sci, Ningbo 315211, Zhejiang, Peoples R China

[2] Zhejiang Inst Freshwater Fisheries, Huzhou 313001, Zhejiang, Peoples R China

来源：

ACTA BIOLOGICA HUNGARICA | 2014年 / 65卷 / 03期

关键词：

Phascolosoma esculenta; sperm motility; fertilization rate; environmental factors; IONS; OSMOLALITY; ACTIVATION;

D O I：

10.1556/ABiol.65.2014.3.4

中图分类号：

Q [生物科学];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

The study investigated the effects of environmental factors (salinity, pH, ions and activation media) on sperm motility (activation rate, duration of quick movement, and lifespan) and fertilization rate of Phascolosoma esculenta. The results showed that spermatozoa in the coelom and nephridium are able to move quickly. The optimal salinity was 14.64 to 43.35 and the optimal pH was 6.46 to 9.53 for sperm activation and motility, whereas the ranges for fertilization were narrower (18.56 to 30.3 for salinity and 6.46 to 8.61 for pH). Of the ions studied, Na+ was indispensable for sperm motility and fertilization, and Ca2+ and Mg2+ were necessary for fertilization. P. esculenta sperm could not fertilize eggs and have short lifespans in 200 to 600 mmol/L NaCl and KCl solutions. Furthermore, they could not be activated or move in 200 to 600 mmol/L CaCl2, MgSO4, and sucrose solutions.

引用

页码：274 / 284

页数：11

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