Modelling the effect of temperature on the biology and demographic parameters of the African coffee white stem borer, Monochamus leuconotus (Pascoe) (Coleoptera: Cerambycidae). (April 2020)

• Record Type: Journal Article
• Authors: Azrag, Abdelmutalab G.A.; Yusuf, Abdullahi A.; Pirk, Christian W.W.; Niassy, Saliou; Guandaru, Ephantus K.; David, Guillaume; Babin, Régis
• Is Part Of: Journal of thermal biology. Volume 89(2019)
• Publication Date: 2020-04
• Subjects: Coffea arabica -- Insect life cycle modelling -- Development time -- Development rate -- Life table parameters; Thermobiology -- Periodicals; Temperature -- Periodicals; Biology -- Periodicals; Thermobiologie -- Périodiques; Thermobiology; Periodicals; 571.46
• DOI: 10.1016/j.jtherbio.2020.102534
• Languages: English
• ISSNs: 0306-4565

Abstract

Abstract: The African coffee white stem borer Monochamus leuconotus (Pascoe) (Coleoptera: Cerambycidae) is a destructive insect pest of Arabica coffee trees in African highlands. Our study aims to provide information on the pest biology as influenced by temperature, determine thermal thresholds, and provide life table parameters for M. leuconotus reared in the laboratory. The life cycle of M. leuconotus was studied at seven constant temperatures in the range 15–35 °C, with 80 ± 5% RH and a photoperiod of L:D 12:12. Linear and nonlinear models were fitted to laboratory data to describe the impact of temperature on M. leuconotus development, mortality, fecundity and senescence. The complete life cycle was obtained between 18 and 30 °C, with the egg incubation period ranging 10.8–29.2 days. The development time was longest for the larva, with 194.2 days at 30 °C and 543.1 days at 18 °C. The minimum temperature threshold ( T m i n ) was estimated at 10.7, 10.0 and 11.5 °C, for egg, larva and pupa, respectively. The maximum temperature threshold ( T m a x ) was estimated at 37.4, 40.6 and 40.0 °C for egg, larva and pupa, respectively. The optimum temperature for immature stage survival was estimated between 23.0 and 23.9 °C. The highest fecundity was 97.8 eggs per female at 23 °C. Simulated life table parameters showed the highest net reproductive rate ( R o ) of 11.8 daughters per female at 26 °C and maximal intrinsic rate of increase ( r m ) between 26 and 28 °C, with a value of 0.008. Our results will help understanding M. leuconotus biology as influenced by temperature and may be used to predict the distribution and infestation risk under climate warming for this critical coffee pest. Highlights: Temperature-dependent development models were developed for Monochamus leuconotus. T m i n for immature stage development ranged from 10 to 11.5 °C, depending on the stage. T m a x for the development was estimated between 37.4 and 40.6 °C, depending on the stage. The fecundity was highest at 23 °C, with 97.8 eggs per female. Intrinsic rate of increase r m was maximal between 26 and 28 °C, with a value of 0.008