Abstract
ABSTRACT The effects of temperature on population characteristics of Artemia sinica Cai from Yanchi Saltlake, Shanxi province, China, were studied in the laboratory at a salinity of 60%&0ihel0;. The developmental stages and generation time were dramatically shortened with increasing water temperature between 16°C and 34°C. Hatching and survival rates decreased rapidly above 30°C. The optimum temperature for reproduction and population growth was 26–28°C. The threshold temperatures for hatching of eggs and development of larvae were 9.07°C and 11.00°C, respectively. The effective cumulative temperature for a generation (time x temperature required from hatching to death) was 458.4±39.6 C degree-days. Based on field monitoring, Yanchi Saltlake provides favorable annual conditions of 2884.1 C degree-days, which would support an estimated 6.3±0.5 A. sinica generations per year. The intrinsic and finite rates of population increase were both increased with adapted water temperature. Extrapolating this data to Yanchi Saltlake, the period from the middle of May to September (second to fifth A. sinica generations) would be the most productive, with a generation time of < 42 d, a population doubling time of < 15 d, a finite rate of increase of > 1.0 d−1, and an intrinsic rate of natural increase of > 0.04 d−1.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
