Results 11 to 20 of about 3,621,755 (261)

Two-Sex Life Table Analysis for Optimizing Beauveria bassiana Application against Spodoptera exigua (Hübner) (Lepidoptera: Noctuidae) [PDF]

open access: yesJournal of Fungi
Spodoptera exigua (Hübner) (Lepidoptera: Noctuidae) is a highly dispersive, polyphagous insect pest that severely defoliates crops. Excessive reliance on synthetic insecticides leads to ecological pollution and resistance development, urging scientists ...
Junaid Zafar   +5 more
doaj   +2 more sources

The entropy of the life table: A reappraisal [PDF]

open access: yesTheoretical Population Biology, 2015
The life table entropy provides useful information for understanding improvements in mortality and survival in a population. In this paper we take a closer look at the life table entropy and use advanced mathematical methods to provide additional insights for understanding how it relates to changes in mortality and survival. By studying the entropy (H)
Oscar E. Fernandez   +1 more
openaire   +5 more sources

The Versatility of the Life Table [PDF]

open access: yesAmerican Journal of Public Health and the Nations Health, 1957
cases of illness, marriages, items of industrial equipment, or any other entity, for present purposes reference will be made principally to human lives. Consider a countable aggregate or cohort of newly born lives, each of which is identified by one or more common characteristics of a specified nature.
openaire   +2 more sources

Effects of Three Artificial Diets on Life History Parameters of the Ladybird Beetle Stethorus gilvifrons, a Predator of Tetranychid Mites

open access: yesInsects, 2020
Background: The ladybird beetle Stethorus gilvifrons (Mulsant) is an important natural enemy of tetranychid mites and functions as a biological control of these plant pests. The development, survival and reproduction of S.
Jafar Ebrahimifar   +4 more
doaj   +1 more source

Physicochemical Properties of Sugarcane Cultivars Affected Life History and Population Growth Parameters of Sesamia nonagrioides (Lefebvre) (Lepidoptera: Noctuidae)

open access: yesInsects, 2022
The use of resistant cultivars is an efficient management strategy against S. nonagrioides. The effects of different sugarcane cultivars, CP48-103, CP57-614, CP69-1062, CP73-21, SP70-1143, and IRC99-02 were evaluated on the oviposition preference (free ...
Seyedeh Atefeh Mortazavi Malekshah   +6 more
doaj   +1 more source

Sublethal effects of flonicamid and dichlorvos insecticides on life-table parameters of the melon aphid Aphis gossypii(Hemiptera: Aphididae) under greenhouse conditions [PDF]

open access: yesنامه انجمن حشره‌شناسی ایران, 2023
Aphis gossypii Glover is considered as the most important and damaging pest with wide host range and distribution on plants in fields and greenhouses.
Hanieh rajabi   +2 more
doaj   +1 more source

Fitness costs of resistance to insecticides in insects

open access: yesFrontiers in Physiology, 2023
The chemical application is considered one of the most crucial methods for controlling insect pests, especially in intensive farming practices. Owing to the chemical application, insect pests are exposed to toxic chemical insecticides along with other ...
Hina Gul   +6 more
doaj   +1 more source

The entropy approach to adjusting the life table, case study: Iran\'s life table

open access: yesپژوهش‌های ریاضی, 2021
Survival analysis, and in particular survival distribution estimation, are important issues in the statistical sciences. Various parametric and nonparametric methods have been proposed to estimate the survival distribution.
Rezvan Rezaei, Gholamhossein Yari
doaj  

Temperature-Dependent Demographic Characteristics and Control Potential of Aphelinus asychis Reared from Sitobion avenae as a Biological Control Agent for Myzus persicae on Chili Peppers

open access: yesInsects, 2020
Aphelinus asychis, a polyphagous parasitoid, has been widely used as an efficient biological control agent against the aphid Myzus persicae. Aiming to evaluate the influence of temperature on the biological characteristics and control potential of A ...
Sheng Yin Wang   +5 more
doaj   +1 more source

Demographic characteristics of the cowpea seed beetle, Callosobruchus maculatus (Coleoptera: Chrysomelidae) on chickpea landraces [PDF]

open access: yesنامه انجمن حشره‌شناسی ایران, 2020
The cowpea seed beetle, Callosobruchus maculatus is one of the most destructive pests of pulses including chickpea. In this research, the effect of chickpea landraces including Abgoshtiriz bokan, Etiopi, Khardar bokan, Zard kordestan, Siah alashtar ...
Ehsan Shahbazi   +3 more
doaj   +1 more source

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