Journal
PAN-PACIFIC ENTOMOLOGIST
Volume 83, Issue 2, Pages 101-109Publisher
PACIFIC COAST ENTOMOL SOC
DOI: 10.3956/0031-0603-83.2.101
Keywords
diptera; sciomyzidae; life history; Dictya montana; biological control; snail pests; phenology
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Information on the life history of the snail-killing fly, Dictya montana Steyskal 1954 is presented. The mean duration of the immature stages at 26 degrees C was 21.56 +/- 2.60 days and larvae were voracious predators with a mean predation capacity of 16,60 +/- 1.76 snails. The survival period of unfed neonate larvae appeared to be temperature dependent and ranged from 2 to 29 days at 26 degrees C and 4 degrees C respectively. However, storage of freshly laid eggs at -20 degrees C for 7 days did not yield viable larvae. For the first time, the phenology of D. montana is detailed and its biocontrol potential against snail-borne diseases is discussed.
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