Artemia Reaction to Different Light Sources
Autor: Jannisthomas • May 6, 2018 • 983 Words (4 Pages) • 710 Views
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Discussion:
The purpose of this experiment was to determine the effect of different light intensity on Artemia. There was significantly more Artemia found in the tubes with no light (0.00) than the tubes that had any light, this is especially true when dark light and intense light are compared (x2=56.28, P>.001). The critical value for chi-squared in this case is 5.99 and the calculated chi-squared value is greater than this critical value. This means that there is a very small probability of Artemia being attracted to dark light levels; 99.9% confident that this data is usually that more Artemia would be found in other light levels.
These results show that Artemia are more likely to be attracted to spaces in the water that have little to no light. Based on these findings, as well as the Chi-squared values it is apparent that the evidence that our data shows would not occur as it had in our data. Artemia are more attracted to light than no light in this experiment and the same is true for ocean sea bass and the constant light where the results were that sea bass were attracted to constant light (Villamizar, 2011). In Hannah’s experiment there was a significant increase in the passage of fish through restricted space with the addition of artificial light (Hannah, 2015).
References
Hannah RW, Lomeli MJM, Jones SA. 2015. Tests of artificial light for bycatch reduction in an ocean shrimp (pandalus jordani) trawl: Strong but opposite effects at the footrope and near the bycatch reduction device. Fisheries Research 170:60-7.
Vanhaecke, P.; Cooreman, A.; Sorgeloos, P. 1981. International study on Artemia Effect of light intensity on hatching rate of Artemia cysts from different geographical origin. VLZ Mar. Ecol. Prog 5: 111-114
Villamizar N, García-Mateos G, Sánchez-Vázquez FJ. 2011. Behavioral responses of european sea bass (dicentrarchus labrax) larvae and artemia sp. exposed to constant light or darkness vs. light/dark cycles of white, red or blue wavelengths. Aquaculture 317(1–4):197-202.
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