The Effect of Low Salinity Levels on the Hatching of Artemia salina and Artemia franciscana
School Name
Spring Valley High School
Grade Level
10th Grade
Presentation Topic
Environmental Science
Presentation Type
Non-Mentored
Abstract
Artemia serve many purposes within hypersaline environments in which they are found; therefore, it is important to understand their susceptibility to environmental factors. Global warming is an increasingly large issue affecting sea levels, temperatures, and salt concentrations in aquatic environments. The purpose of this experiment was to determine whether Artemia salina or Artemia franciscana hatch more readily in water with lower salinities. It was hypothesized salina would have a lower number of nauplii in low salinity environments compared to franciscana, and that both species would fare better in water with a salinity of 30 ppt compared to water at 10 ppt due to regional differences. Artemia cysts were placed in containers with salinities at 30 or 10 ppt. After 24 hours, representative samples from each container were placed under a microscope and the number of nauplii counted. Four individual t-tests were performed to evaluate the relationship between Artemia species and salinity level. It was found Artemia salina in 10/30 ppt and both species hatched in 30 ppt had statistically similar hatch rates, (t(30) =-1.10, p>0.05, t(30) =0.19, p>0.05) and the null hypothesis failed to be rejected. Additionally, fransicana in 10/30 ppt and both species in 10 ppt had statistically different hatch rates, (t(30) = -5.66, p<0.05, t(30) = 7.45, p<0.05), and the null hypothesis was rejected. Artemia salina hatched more readily at 10 ppt, and both species had higher hatch rates at 30 ppt.
Recommended Citation
Amick, Lillian, "The Effect of Low Salinity Levels on the Hatching of Artemia salina and Artemia franciscana" (2022). South Carolina Junior Academy of Science. 1.
https://scholarexchange.furman.edu/scjas/2022/all/1
Location
HSS 215
Start Date
4-2-2022 11:00 AM
Presentation Format
Oral and Written
Group Project
No
The Effect of Low Salinity Levels on the Hatching of Artemia salina and Artemia franciscana
HSS 215
Artemia serve many purposes within hypersaline environments in which they are found; therefore, it is important to understand their susceptibility to environmental factors. Global warming is an increasingly large issue affecting sea levels, temperatures, and salt concentrations in aquatic environments. The purpose of this experiment was to determine whether Artemia salina or Artemia franciscana hatch more readily in water with lower salinities. It was hypothesized salina would have a lower number of nauplii in low salinity environments compared to franciscana, and that both species would fare better in water with a salinity of 30 ppt compared to water at 10 ppt due to regional differences. Artemia cysts were placed in containers with salinities at 30 or 10 ppt. After 24 hours, representative samples from each container were placed under a microscope and the number of nauplii counted. Four individual t-tests were performed to evaluate the relationship between Artemia species and salinity level. It was found Artemia salina in 10/30 ppt and both species hatched in 30 ppt had statistically similar hatch rates, (t(30) =-1.10, p>0.05, t(30) =0.19, p>0.05) and the null hypothesis failed to be rejected. Additionally, fransicana in 10/30 ppt and both species in 10 ppt had statistically different hatch rates, (t(30) = -5.66, p<0.05, t(30) = 7.45, p<0.05), and the null hypothesis was rejected. Artemia salina hatched more readily at 10 ppt, and both species had higher hatch rates at 30 ppt.
