Daily Activity of the Barnacle, Semibalanus Cariosus (Pallas)

Autor:	Osamu Murakami, Yukihiro Shimokawa, Satoshi Takeda
Rok vydání:	1998
Předmět:	Barnacle Semibalanus cariosus biology Ecology Ecological significance White light Intertidal zone Animal Science and Zoology Aquatic Science biology.organism_classification
Zdroj:	Crustaceana. 71:299-311
ISSN:	1568-5403 0011-216X
DOI:	10.1163/156854098x00275
Popis:	The barnacle Semibalanus cariosus lives between the middle region of the intertidal zone and a line just below the low water level of spring tides. Factors affecting its daily activity were investigated. In the field, few individuals engaged in active cirral beating in the daytime, but many did so at night, thus indicating that daily activity was photoperiodic. In the laboratory, they showed similar periodicity under natural light conditions. While many individuals continued to engage in this activity under dark conditions, few did so under white light during the day. Under artificial dark conditions during the daytime, the number of active individuals increased gradually, but decreased rapidly when they were exposed to white light at night. These results strongly suggest that the activity is directly affected by light. The ecological significance of engaging in this activity at night is discussed.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::0b47fdb54352d2c34da2f04e0be82e21 https://doi.org/10.1163/156854098x00275 Zobrazit plný text záznamu