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The Species Status project is a recent initiative, providing up-to-date .. Data were then requested through the beetles-britishisles yahoo group. Last fall, CCE's college unit rolled out a seven-date Ford Focus/ Live There are no firm plans for another Yahoo Outloud because Yahoo, dogged by the The owners of Cream, which began as an obscure club night in the Beatles' by British mega-DJ Fatboy Slim, attracted a mammoth gathering of , dance fans. The Entomologist's Monthly Magazine is a British entomological journal, first published in The journal Beetles of the British Isles - Yahoo egroup.
This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
Researchers at UCD
Methanol extracts of six local plants Anethum graveolens, Apium graveolens, Eucalyptus glauca, Malva parviflora, Mentha longifolia and Zingiber officinale were studied for their toxicity effect on mortality of the last larval stage of Tribolium confusum by assessing the mortality value of the larvae for different plant extracts and different exposure times hrs and estimating the value of LT50 for each plant extract. The mortality were varying from plant to plant as follows: Anethum graveolens reached its maximum value of The LT50 values for T.
The results indicate that Zingiber officinale was the most toxic plant and Anethum graveolens the least toxic.
Keywords Plant extract; Tribolium confusum; Mortality; LT50 Introduction Wheat suffers heavy losses during storage due to insect pests. Insect pests cause damage to stored grains and processed products by reducing their dry weight and nutritional value [ 2 ].
The confused flour beetle, Tribolium confusum is one of the most serious pests of stored cereals and processed cereal products worldwide [ 3 - 5 ]. Around the world, residual chemical insecticides and fumigation are currently the methods of choice for the control of insects of storedproducts [ 6 ].
UCD Dublin | Research | Biology & Env Science
Their widespread use has led to some serious problems, including the development of insect strains resistant to insecticides [ 7 ], toxic residues on stored grains, and health hazards to grain handlers.
Increased public concern over the residual toxicity of insecticides applied to stored products, the occurrence of insecticide-resistant insect strains, and the precautions necessary to work with traditional chemical insecticides stress the usage of botanicals to control insects of stored product [ 8 ]. Insect pests have mainly been controlled with synthetic insecticides in the last fifty years and the protection of stored grains from insect damage is currently dependent on synthetic pesticides.Conflicts of Nature : Conflicts in a Pond - Wildlife Documentary
Botanicals are a promising source of pest control compounds. The plant kingdom can be a rich source of a variety of chemicals with the potential for development as successful pest control agents [ 910 ].
Checklist of Beetles of the British Isles
Secondary compounds from plants including alkaloids, terpenoids, phenolics, and flavonoids can affect insects in several ways. They may disrupt major metabolic pathways and cause rapid death, act as attractants, deterrents, phago-stimulants antifeedants or modify oviposition.
They may also slow down or accelerate development [ 11 - 13 ]. There is, therefore, an urgent need to develop environment friendly alternatives with the potentials to replace the highly toxic chemicals.
On the basis of experimental studies it was found that the mixture of plant materials with their rapid and slow action, proved to be very effective for the protection of stored grains.
It has also been well recognized internationally that some plants derived insecticides can affect a limited range of insect pests, but have no harmful effect on non targeted organisms and the environment.
UK's oldest takeaway driver
Download the PDF of the carabid crib: Carabid Crib v11 Version 11 includes a minor correction to Badister couplet 5, a minor correction to the Notiophilus biguttatus species account, a correction to the Microlestes maurus species account, a replacement couplet 1 in the key to Anisodactylus, and discusses a flaw in couplet 1 of the key to subgenera of Harpalus without finding a solution! It also includes new links to photos of crossed elytral epipleura and setiferous punctures inside eye.
Tell us where you get stuck! Keys should work first time.
But only a first-time key-user can really judge whether the keys work first time or not! Experienced coleopterists often fail to spot the problems that would face a first-time user. The Atlas really helps to check whether the carabid you have just identified is common, scarce, rare or outrageous.
It has only fairly recently become available as a PDF which can be freely downloaded here.