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The relative distribution of mosquito larvae in 3 macrohabitats (forest, rock outcrop and grassland) and three microhabitats (bamboo cups, snail shells and house‐hold cans) was studied between January and June, 1986. The investigation revealed that the genus Eretmapodites had a marked preference for snail shells in forest and grassland macrohabitats. The genus Anopheles tends to avoid containers as breeding sites and was only recorded from bamboo cups in the rock outcrop area. Similarly, Culex mosquito also tend avoid snail shells, but high numbers of the larvae were found in bamboo cups and cans. Aedes mosquitoes were found to breed in all types of containers and in all macrohabitats. Numbers of Aedes larvae (1760) encountered represented 62% of all larvae. These differences were shown to be statistically significant by the Student T‐test (p ≤ 0.05) ‐ i.e. there is a significant difference in the distribution of mosquito larvae both in the macrohabitats and in the containers. The significance of the findings are discussed with respect to public health. Zusammenfassung Untersuchungen zur Brutplatz‐Präferenz von Stechmücken in Ekpoma, Nigeria Es wurde in der Umgebung von Ekpoma, Nigeria, die relative Verbreitung der Stechmückenlarven in 3 Makrohabitaten (Forst, Fels und Grasland) und 3 Mikrohabitaten (Bambusstengel, Schneckenschalen und Haushaltskannen) zwischen Januar und Juni 1986 untersucht. Die Gattung Eretmapodites zeigte eine starke Vorliebe für Schneckenhäuser in Forst und Grasland. Die Gattung Anopheles tendierte zur Vermeidung von Behältern (Mikrohabitat). Culex‐Arten mieden Schneckenhäuser, waren aber mit hohen Zahlen in offenen Bambusstengeln und in Kannen vertreten. Die Arten der Gattung Aedes wurden in alien Makro‐ und Mikrohabitaten gefunden. Die Aedes‐Larven (n = 1760) machten 62% aller Culicidenlarven aus. Die Zahlenergebnisse wurden mit dem Student‐T‐Test abgesichert. Sie zeigen signifikante Unterschiede der Verbreitung der Stechmückenarten zwischen den Makro‐ und Mikrohabitat‐Typen.
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I. B. Igbinosa (1989) studied this question.
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