title: The effects of temperature, humidity, photoperiod and weight of the engorged female on oviposition of Boophilus annulatus (Say, 1821).
abstract: At a constant temperature of 25 degrees C and 84% relative humidity the pre-oviposition period of Boophilus annulatus was 2-5 days (mean 2.7 days) and the oviposition lasted 11-17 days (mean 15 days). The peak egg laying occurred 1-6 days (mean 3.5 days) after the start of oviposition. The daily egg output was 135 (range 90-190) and the total egg production was 2004 (range 1432-2664). Light had no significant effect on oviposition. There was a highly significant correlation between the weight of the engorged female and the total egg yield (r = 0.78; P less than 0.01). The pre-oviposition and oviposition periods were not influenced by the weight of the engorged females. The relative humidity (25, 62, 93%) had no effect on the oviposition, but the temperature (16, 25, 35 degrees C) had a significant influence on it. The pre-oviposition and oviposition periods increased with the decrease of temperature. The course of oviposition was similar at 25 and 35 degrees C, with a peak occurring within a few days of the start of egg-laying, followed by a gradual decline. At 16 degrees C, the egg production curve was flat, without a peak. However, the total number of eggs produced was not significantly different at the three temperature regimes.
mesh_terms: D000818:Animals; D001835:Body Weight; D005260:Female; D006813:Humidity; D008027:Light; D010058:Oviposition; D010507:Periodicity; D013696:Temperature; D013987:Ticks / Q000502:physiology*