Data/hora: 01/06/2024 07:54:01

Provedor de dados: | 56
País: | Brazil
Título: | Changes in the behavioral and immunological parameters of the mollusk Biomphalaria tenagophila induced by disruption of the circadian cycle as a consequence of continuous illumination
Autores: | Waissel,I.; Mineo,J.R.; Natal,C.L.
Data: | 1999-12-01
Ano: | 1999
Palavras-chave: | Circadian cycle; Mollusk; Neuroimmunology; Stress; Behavior.
Resumo: | In the present investigation we studied some behavioral and immunological parameters of adult gastropod mollusk, Biomphalaria tenagophila, which have been reproducing for several generations under laboratory conditions. One group of gastropods was kept on a 14-h light/10-h dark cycle, corresponding to a regular circadian cycle, and another group was exposed to continuous light for 48 h. Animals were studied along (behavioral groups) or immediately after (immunological groups) 48 h of regular circadian cycle or continuous light conditions. Stopping/floating, dragging and sliding were the behavioral aspects considered (N = 20 for regular cycle; N = 20 for continuous illumination) and number of hemocytes/µl hemolymph was the immunological parameter studied (N = 15 for regular cycle, N = 14 for continuous illumination). Animals under continuous illumination were more active (sliding = 33 episodes, dragging = 48 episodes) and displayed a lower number of hemocytes (78.0 ± 24.27/µl) when compared with mollusks kept on a regular circadian cycle (sliding = 18 episodes, dragging = 27 episodes; hemocytes = 157.6 ± 53.27/µl). The data are discussed in terms of neural circuits and neuroimmunological relations with the possible stressful effect of continuous illumination.
Tipo: | Info:eu-repo/semantics/other
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X1999001200014
Editor: | Associação Brasileira de Divulgação Científica
Relação: | 10.1590/S0100-879X1999001200014
Formato: | text/html
Fonte: | Brazilian Journal of Medical and Biological Research  v.32 n.12 1999
Fonte: | info:eu-repo/semantics/openAccess