Abstract
Simple SummaryThe developmental time of L. serricorne significantly decreases as the temperature increases from 21 °C to 33 °C. Adult L. serricorne have a relatively longer oviposition period and the highest fecundity at a temperature of 33 °C. Lasioderma serricorne has the highest age-stage-specific survival rate (Sxj) at a temperature of 27 °C, but a higher fecundity (mx and lxmx) is observed at temperatures of 30 °C and 33 °C. A comprehensive analysis shows that among the experimental temperatures, a temperature between 30 °C and 33°C is the most appropriate for the population development of the pest. Our research results provide theoretical information for the control of pests and mass rearing of L. serricorne.The cigarette beetle Lasioderma serricorne (Fabricius) is a major pest of stored products worldwide, especially tobacco and foods, causing huge economic losses. This study aimed to experimentally investigate the population dynamics of this pest at different temperatures and provide theoretical input for its control. Populations of L. serricorne were established under laboratory conditions at five temperatures (21 °C, 24 °C, 27 °C, 30 °C, and 33 °C). Results showed that an increasing temperature significantly affected the developmental time, longevity, oviposition period, and fecundity of L. serricorne. Both the longevity and fecundity of adult beetles were significantly reduced as the temperature increased. High temperatures significantly reduced the total duration of the preoviposition period but prolonged the oviposition period of L. serricorne. Increasing the temperatures from 21 °C to 33 °C significantly influenced the life table parameters of L. serricorne. The intrinsic increase rate (r), finite increase rate (λ), and gross reproductive rate (GRR) all increased with a greater rearing temperature, but mean generation time (T) was significantly shortened. To our best knowledge, this is the first report to detail the entire life history of the cigarette beetle in response to different temperatures when reared on tobacco dry leaves. This finding may provide basic information on the occurrence of L. serricorne in a warehouse setting and its mass rearing.
Highlights
The cigarette beetle Lasioderma serricorne (Fabricius), (Coleoptera: Anobiidae), is a major worldwide pest of stored products, such as tobacco, tea, Chinese crude drugs, dried vegetable products, dried fruit, and animal substances [1]
Larvae of L. serricorne were collected on 10 June 2019 from dry tobacco leaves provided by the Guiyang Redrying company of the Guizhou Tobacco Redrying Group (Guiyang, Guizhou, China)
They were transferred to a laboratory at the Ecological Food and Agricultural Product Engineering Research Center, Guizhou Light Industry Technical College, where the larvae were reared using dry tobacco leaves in a glass pot in a controlled environment
Summary
The cigarette beetle Lasioderma serricorne (Fabricius), (Coleoptera: Anobiidae), is a major worldwide pest of stored products, such as tobacco, tea, Chinese crude drugs, dried vegetable products, dried fruit, and animal substances [1]. The cigarette beetle has four life stages (egg, larva, prepupae and pupae, and adult): the feeding larvae of L. serricorne cause most of the damage to the infested commodities, but adults of the beetle are capable of cutting holes when trying to escape or enter packaged commodities, inflicting damage to a lesser extent than larvae [2,3]. The adults normally lay eggs on the surface of tobacco leaves, and the larvae might consume the leaf into the flour; this herbivory severely damages the potential stored product, via what is consumed by larvae and by a reduction in its market value caused by remnant excrement, skins, or dead bodies [1]. The extent of damage caused by a pest mainly depends on how rapidly the population develops [4]
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