Development periods of immature stages of rhyzobius lophanthae Blaisdell (coleoptera: Coccinellidae) at different temperatures

KAYAHAN A., Karaca I.

Fresenius Environmental Bulletin, vol.29, no.9 A, pp.8186-8192, 2020 (SCI-Expanded, Scopus) identifier

  • Publication Type: Article / Article
  • Volume: 29 Issue: 9 A
  • Publication Date: 2020
  • Journal Name: Fresenius Environmental Bulletin
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Aerospace Database, Agricultural & Environmental Science Database, Aqualine, Aquatic Science & Fisheries Abstracts (ASFA), CAB Abstracts, Chemical Abstracts Core, Communication Abstracts, Environment Index, Geobase, Greenfile, Metadex, Pollution Abstracts, Veterinary Science Database, Civil Engineering Abstracts
  • Page Numbers: pp.8186-8192
  • Keywords: Biological control, Development threshold, Insect ecology, Life cycle, Scale insects, Thermal constant
  • Isparta University of Applied Sciences Affiliated: No

Abstract

Rhyzobius lophanthae Blaisdell (Coleoptera: Coccinellidae) is one of the most important predators of scale insects pests. In this study, development periods of immature stages of R. lophanthae on Aspidiotus nerii Bouche (Hemiptera: Diaspididae) at different constant temperatures (14, 16, 18, 20, 22, 24, 26, 28, 30, 32, 34 and 36 °C), 60% relative humidity and 16:8 hour photoperiod, were investigated. The parameters of the predator under different temperatures were calculated with RmStat-3. Development periods of immature stages of R. lophanthae on different temperatures demonstrated that egg development time at 14 °C longer than the other temperatures. In the all larval instars and pupae stage, the larval development periods become shorter, as the temperature increase. Total development time on different temperatures was found 93.77, 77.14, 58.77, 41.36, 37.17, 29.79, 21.29, 17.78, 15.31 and 20.63 days, respectively. Most of the eggs died at 34 °C; only two eggs were able to enter in the first larval period and these larvae died in the first larval period. Besides, all of the eggs died in this period at 36 °C. According to the results, it is possible to say that mass production of the predator in laboratory conditions can be more economically and rapidly at the between 26 °C and 30 °C.