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- W2017963547 abstract "At the constant temperature of 25°C and relative humidity (RH) of 84%, the average pre-oviposition period of Hyalomma lusitanicum was 47 days, the oviposition lasted an average of 26 days and the total egg production was an average of 6320 per female. At 16°C the females did not lay eggs at all, but those which survived for 1 year and were transferred thereafter to 25°C and 84% RH laid viable eggs. At 35°C, the oviposition was identical at all levels of RH tested (25, 62 and 93%). At 25°C, the pre-oviposition period was shorter at 93% RH, and the number of eggs laid was fewer at 25% RH. The eggs hatched in 32–40 days, the hatching percentage being lower in batches of eggs laid at the beginning and at the end of the oviposition period. The larval and nymphal moultings were not influenced by the type of host. As the temperature increased, the pre-moult period became shorter. The engorged larvae were more sensitive to the low RH than the engorged nymphs, whose moulting percentage was always greater than 72 in all regimes. Low temperature and high humidity had a favourable effect on the survival of unfed nymphs. The female-to-male ratio was 1:2. Hyalomma lusitanicum always behaved as a 3-host tick. The adults did not engorge on rabbits. The female ticks engorged on calves weighed an average 543 mg. Ticks maintained at 25°C and 84% RH and engorged on calves completed the life cycle in 138–196 days, which does not include the period of chitinization of about 30 days. More than half of this period was spent in egg laying and hatching. A temperature et humidité relative (HR) constante (25°C et 84% HR) la durée de préoviposition de Hyalomma lusitanicum est de 40 à 60 jours, l'oviposition dure de 20 à 30 jours et le nombre total des oeufs produit par femelle est 6320. A 16°C et quelque soit l'HR utilisée, aucune femelle n'a pondue, mais celles qui ont survécu et ont été mise à 25°C et 93% HR ont pu pondre des oeufs viables. A 35°C, l'HR n'intervient pas de manière significative, ni sur les durées de pré-oviposition et oviposition, ni sur la production des oeufs. À 25°C, par contre, HR de 93% raccourcit nettement la durée de pré-oviposition. Sauf à 25°C et 25% HR, la production totale d'oeufs ne semble pas être affectée significativement par les températures et les HR. La durée d'incubation d'oeufs est de 32 à 40 jours. La pourcentage d'éclosion est faible chez les oeufs pondus au début et à la fin d'oviposition. La durée du mue est indépendant du hôte; le temps avant la mue dimunue avec une augmentation de température. Les larves engorgées sont beaucoup plus sensible à l'influence de l'HR que les nymphes engorgées, qui muent dans tous les régimes à un taux supérieur à 72%. Les faibles températures et les hautes HR sont favorables à la survie des nymphes à jeun. La proportion de femelles à mâles est de 1:2. Sur le veau ou sur le lapin, H. lusitanicum évolue comme une tique à trois hôtes. Les formes adultes n'ont pas pu s'engorger chez le lapin. Les poids de femelles engorgées sur le veau varient entre 218 et 824 mg. La durée du cycle total de H. lusitanicum est entre 138 et 198 jours; plus du moitié étant occupée par l'oviposition et l'éclosion." @default.
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- W2017963547 date "1984-07-01" @default.
- W2017963547 modified "2023-10-16" @default.
- W2017963547 title "Development of Hyalomma lusitanicum under laboratory conditions" @default.
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- W2017963547 doi "https://doi.org/10.1016/0304-4017(84)90110-9" @default.
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