5 pages, 1 figure | Los seres vivos están situados en el seno de un ambiente cuyos variados influjos son perceptibles en la organización de los mismos, en forma de adaptaciones, usando este término en el sentido general de respuestas biológicas y conseguientemente teleológicas al estímulo que aquellos provocan. [...] Vorticelas, Cyclops, Branchipus, Ceriodaphnia, Ankistrodesmus, Colacium sideropus Skuja, Batrachospermum, Cladophora, Characium, Draparnaldia, Ocdogonium, Vorticella acquilata Kahl, Vorticella microstoma Ehrenb., Tokophrya cyclopum, Tokophrya lemnarum Stokes, Cocconeis placentula Ehrenb., Chloroclonim Mareci Margalef, Limmaca ovata Drap., Chironosmus, Characium pringsheimii A. Br., Ankistrodesmus falcatus (Corda) Ralfs, stipitatus (Chod.) Lemm., Simocephalus, Colacium versiculosum Ehrenb., Moïna, Chudorus sphaericus, Intranstylum incaginatum Stokes, Chydorus, Branchipus vernalis, Characium gracilipes F. D. Lambert, Characium cylindricum, Epystilis Zchokkei Keiser, Synedra pulchella Kuetz. [...] | Peer reviewed

info:eu-repo/semantics/publishedVersion

info:eu-repo/semantics/publishedVersion

<abstract language="eng">Within the possibilities offered by an emergency laboratory in Aracati, Ceará State, we studied the resistance of the eggs of Anopheles gambiae, maintained out of water under different conditions of temperature and humidity. The resistance observed was insufficient to justify special mosquito-control measures. The same results were obtained with larvae and pupae at low temperature. The analysis of the data concerning the egg resistance showed that hatching depends on stimuli.