title: Life history of Sancassania polyphyllae (Acari: Acaridae) feeding on dissected tissues of its phoretic host, Polyphylla fullo (Coleoptera: Scarabaeidae): temperature effects.
abstract: The effect of temperature on the development and fecundity of Sancassania polyphyllae fed on tissues of Polyphylla fullo larvae was studied at 15, 20, 25, 30, and 35 ± 1°C and 65 ± 10% RH in a dark incubator. Mean developmental period of immature stages decreased significantly with increasing temperatures from 15 to 30°C. Developmental periods at 30-35°C were not significantly different. The estimated lower developmental thresholds of the various immature stages ranged between 10.1 and 11.5°C. The thermal constant for the egg-to-female adult was 93.5 degree-days. The pre-oviposition, oviposition, and post-oviposition periods and female longevity were significantly longer at 15°C than at higher temperatures. Mean total and daily fecundity were the highest at 25°C, which were significantly different from those obtained at 15, 20 and 30°C. The net reproductive rate (R (0)) was the highest at 25°C (588.3 ♀/♀). The longest mean generation time (T (0)) occurred at 15°C (36 days) and the shortest occurred at 30°C (9.2 days). The highest intrinsic rate of increase (r (m)) for S. polyphyllae was observed at 25 (0.61 ♀/♀/day) and 30°C (0.62 ♀/♀/day).
authors.affiliation: Faculty of Agriculture, Department of Plant Protection, Adnan Menderes University, 09010, Aydin, Turkey. icakmak@adu.edu.tr
authors.forename: Ibrahim
authors.initials: I
authors.lastname: Cakmak
authors.forename: Mehmet
authors.initials: M
authors.lastname: Karagoz
authors.forename: Z
authors.initials: Z
authors.lastname: Ipek Ekmen
authors.forename: Selcuk
authors.initials: S
authors.lastname: Hazir
authors.forename: Harry K
authors.initials: HK
authors.lastname: Kaya
mesh_terms: D040041:Acaridae / Q000254:growth & development*; D000818:Animals; D001517:Coleoptera / Q000469:parasitology; D005260:Female; D005298:Fertility; D008136:Longevity; D008297:Male; D013696:Temperature