scholarly journals Density‐independent prey choice, taxonomy, life history, and web characteristics determine the diet and biocontrol potential of spiders (Linyphiidae and Lycosidae) in cereal crops

2021 ◽  
Author(s):  
Jordan P. Cuff ◽  
Maximillian P.T.G. Tercel ◽  
Lorna E. Drake ◽  
Ian P. Vaughan ◽  
James R. Bell ◽  
...  
Keyword(s):  
Life History ◽  
Cereal Crops ◽  
Prey Choice ◽  
Biocontrol Potential

The Bionomics of Lema melanopa, L. (Criocerinae), in Great Britain

1929 ◽  
Vol 20 (1) ◽  
pp. 5-14 ◽  
Author(s):  
W. E. H. Hodson
Keyword(s):  
Life History ◽  
Life Cycle ◽  
Great Britain ◽  
Control Measures ◽  
Cereal Crops ◽  
Cultural Methods ◽  
Total Control ◽  
Previous Account ◽  
Larval Parasites ◽  
Do So

The beetle, Lema melanopa, is a serious pest of cereal crops in certain areas of Europe and is becoming increasingly common on cereals in Britain. A survey of the literature indicates that the life-history differs in various localities, and no previous account has been given of the life-history in this country.The life-cycle in Britain is briefly as follows. The adult beetles emerge from hibernation in April, mate and commence to oviposit towards the end of May. Oviposition continues for nearly two months, and adults commence to emerge early in July and continue to do so until September. There is no indication that a second brood occurs, although the climate would permit of one.The adults feed freely after emergence, but largely on grasses, prior to hibernating in November. In the spring they feed almost exclusively on the leaves of young cereals. The larvae feed principally on cereals. Adults tend to be gregarious and are very long-lived, numbers living over a second winter.Two larval parasites occur in Britain and further information concerning these is being obtained. Of all larvae collected in the field 25 per cent. were found to be parasitised.The loss of crop sustained as a result of attack by this pest amounts on the Continent, in extreme cases, to as much as 50 per cent. of the total. Control measures consist of cultural methods, spraying and dusting. Certain of these might be adapted for use in this country with reasonable hope of success.

scholarly journals Development and Life History ofSitophilus zeamais(Coleoptera: Curculionidae) on Cereal Crops

2016 ◽  
Vol 2016 ◽  
pp. 1-8 ◽  
Author(s):  
James Adebayo Ojo ◽  
Adebayo Amos Omoloye
Keyword(s):  
Life History ◽  
Larval Instar ◽  
Head Capsule ◽  
Management Program ◽  
Developmental Period ◽  
Cereal Grains ◽  
Cereal Crops ◽  
Maize Weevil ◽  
Head Capsule Width ◽  
The Mean

The maize weevil,Sitophilus zeamaisMotschulsky (Coleoptera: Curculionidae), is one of the most destructive pests of stored cereals. Knowledge of the life history and biology is important to the development of an integrated pest management program. Investigation was carried out on developmental biology ofS. zeamaison four main cereal crops, maize, rice, sorghum, and millet, under laboratory conditions. Egg incubation, oviposition periods, and larval instar development were not different significantly among the food hosts. Number of eggs laid varied significantly among the cereal grains; mean fecundity was highest on maize (67.2±3.16) and lowest on millet (53.8±0.17). Number of immature (larva and pupa) and adult stages varied significantly among the cereal grains. There exist four larval instars with a varied mean head capsule width, with a mean total instar larval developmental period of 23.1, 22.2, 22.2, and 21.6 d on maize, rice, sorghum, and millet, respectively. There was linear relationship and significant correlation between the stages of larval development and head capsule width. The mean developmental period from egg to adult varied, being highest on maize (34.7 d) and lowest on sorghum (33.5 d).

Life history and biocontrol potential of Dictya montana Steyskal, 1954 (Diptera: Sciomyzidae), a snail-killing fly

2007 ◽  
Vol 83 (2) ◽  
pp. 101-109 ◽  
Author(s):  
R. J. Mc Donnell ◽  
T. D. Paine ◽  
R. E. Orth ◽  
M. J. Gormally
Keyword(s):  
Life History ◽  
Biocontrol Potential

Interrelationships of factors of social development are more complex than Life History Theory predicts

2019 ◽  
Vol 42 ◽  
Author(s):  
Boris Kotchoubey
Keyword(s):  
Life History ◽  
Social Development ◽  
Life History Theory ◽  
Strong Correlations ◽  
Behavioral Features

Abstract Life History Theory (LHT) predicts a monotonous relationship between affluence and the rate of innovations and strong correlations within a cluster of behavioral features. Although both predictions can be true in specific cases, they are incorrect in general. Therefore, the author's explanations may be right, but they do not prove LHT and cannot be generalized to other apparently similar processes.

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