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   Effects of temperature on the development and survival of the bagworms Pteroma pendula and Metisa plana (Lepidoptera: Psychidae)  
   
نویسنده ibrahim y. ,tuck h.c. ,chong k.k.
منبع journal of oil palm research - 2013 - دوره : 25 - شماره : APR - صفحه:1 -8
چکیده    The effects of temperature on the development and survival of pteroma pendula and metisa plana was investigated over a range of temperatures in the laboratory. pteroma pendula and m. plana were able to complete their life cycles at temperatures between 20°c-35°c but did not survive at 15°c and 40°c. the duration of life stages of p. pendula significantly decreased with increases in temperature with optimum survival of between 25°c and 30°c,while the highest was at 30°c. in the case of m. plana,except for survivorship of male pupae with five instars at 79% at 25°c,the optimum survivorship was around 30°c for all other life stages. the temperature threshold for p. pendula life stages was 11°c-18°c,while that of m. plana ranged from 2°c-16°c; when subdivided,a threshold of 2°c-8°c was recorded for the egg to adult stages and 9°c-16°c for the egg and larval stages. thermal constant for p. pendula was 80.3°d,443.0°d,566.3°d,47.5°d,33.9°d for eggs,female larvae,male larvae,female pupae and male pupae,respectively. overall egg to female and male adult emergence required 544.0°d and 761.3°d to complete. for m. plana,the readings were 555°d-1083°d for the larval stages,69°d-200°d for eggs and pupae,while the egg to adult stages recorded the highest at 1440°d-2134°d. both species recorded significantly highest temperature of 30°c for adult female weight,fecundity and r0 with the most favourable values of t,dt,rc,rm and λ recorded at 35°c.
کلیدواژه M. plana; P. pendula; Population dynamics; Temperature; Thermal constant
آدرس department of agricultural science,faculty of technical and vocational education,sultan idris education university,35900 tanjong malim, Malaysia, cabi southeast and east asia regional centre,p. o. box 210,43400 serdang, Malaysia, cabi southeast and east asia regional centre,p. o. box 210,43400 serdang, Malaysia
 
     
   
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