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Données expérimentales préliminaires sur l'étude de l'activité phtototaxique du copépode Acartia tonsa Dana 1849
Patriti, G. (1989). Données expérimentales préliminaires sur l'étude de l'activité phtototaxique du copépode Acartia tonsa Dana 1849. Mar. Nat. 2(1): 31-37
In: Marine Nature. Marine Science Institute, Yeungnam University: Kyongsan. ISSN 1225-990X, more
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    Marine/Coastal
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  • Patriti, G.
Abstract
    Two complemental experiments were conceived in order to study the relationship between the swimming activity of Acartia tonsa (Copepoda) and light intensity. In the first experiment the swimming activity was measured by actotaxigraphy in a vertical tank. In the second experiment, it was studied by visual observation in an horizontal tank. These_ two experiments led us draw a graph showing swimming activity versus light intensity. This graph shows a daily cycle in which swimming occurs at dawn and during the night. This activity could be the fact of males only. No proof of a nycthemeral migration was found.
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