Search Results for: Stor gedehams, hveps

Storage mites

…– they can do the same to human skin. Fig. 93 The Lepidoglyphus destructor storage mite. (Hughes) Allergies Many people develop allergies of storage mites in the surrounding environments. Symptoms may include itching of the eyes and nose, rhinitis or asthma attacks every time you are exposed to dust from mite-infected goods. Especially people who work in the agricultural sector are afflicted by the mite-infected dust. The mite that most often caus…

The castor bean tick

…ready to climb onto a host with the front pair of legs. (Gjelstrup) The castor bean tick The castor bean tick, Ixodes ricinus, is just one of about thirty kinds of ticks that are found in Denmark. However, it is almost exclusively this species of ticks that is found on humans. An adult male tick is approx. 2 mm long. The female is twice as long. Ticks engorge when they suck blood. The abdomen’s reddish-brown, leathery skin can expand quite a lot….

The castor bean tick bite

…es of antibiotics are given to the patient. If you have been bitten by a castor bean tick and have alarming symptoms which the doctor cannot (with certainty) link to any common diseases, it is important to mention that you were bitten by a castor bean tick, in order for the spirochete infection to come into consideration. Tick paralysis. In the tick saliva there is a neurotoxin with curare-like effects. In some cases, it is released it in such lar…

An old problem

…ith the exact same types of insects that we deal with today in modern food storages. That includes, among other species, granary weevils, confused flour beetles, drugstore beetles, lesser grain borers, saw-toothed grain beetles, spider beetles and cigarette beetles. Our ancestors might have acted casually having beetles in their food, but they too had to take precautionary measures to ensure their own share of the food. In ancient Egypt and the Ro…

Castor bean tick

Castor bean tick ( Latin: Ixodes ricinus) The adult male is 2 mm long, the female twice this .length, but these measurements only apply to individuals which have not recently fed. The red-brown, leathery skin of the abdomen can stretch to an incredible extent. This species is very common in some areas, but not in others. This is because it requires special environmental conditions. It is, for instance, sensitive to desiccation and is therefore fo…

Saw-toothed grain beetle

…onally brought the beetles back again. If they are found in silos or grain storages, the control is very differently. Here one will use malathion products. Thoroughly cleaning empty silos and storage. Afterwards one can use the malathion powder before the fresh grain is brought in. The saw-toothed grain beetle can also be controlled with diatomaceous based products. If so it is important that both the storage facility as well as grain products is…

5. Non-chemical control measures

…in the laboratory or in practice, however, have noted any effect of these devices. Some of these devices run with volumes of up to 130 dB, which is far above what is considered harmful to the human ear. Biological control, in which pests’ natural enemies are exploited, is not a method used against storage pests. There is no doubt that predators and parasites in some cases help to keep storage pests down. Possibly, natural enemies can be exploited…

Pests can ruin stored goods

Besides from the obvious loss that is caused by pests eating stored food, there is also the large amount of food that is thrown away as a result of the mere presence of pests. Goods containing pests can change significantly in proportion to the declared content and quality. The weight of products can change due to respiration from pests and damage to the packaging which results in loss of some of the goods. The declared content of nutrients shift…

Animals in foods

…n reserve for bad times, insects and rodents have taken their toll of such stores. The remains of pests of stored products (e.g. flour beetles) have been found in graves from 2,500 B.C., and drugstore beetles, spider beetles and tobacco beetles were found in the grave of Tutankhamun. Animal pests of stored products are still with us. Indeed it has been estimated that about 15 per cent of all stored foodstuffs never reach human mouths, but end up i…

Introduction

…surrounding countryside had to offer, and there was no knowledge on how to store foods in any quantity. True pests of stored goods were therefore unknown to these ancestors, who must however have had problems with blowfly maggots infesting their game and other pests destroying their hides and skins. Nor would they have been spared by the true parasites. Lice must have infested their hair and bed bugs and fleas must have multiplied, generation afte…

Competition for food

…of all crops are destroyed by pests before harvest. There is also a sizeable loss in stored goods today. The loss is due to pests, fungus and respiration which are difficult to separate as one often follow the other. In many development countries storage loss can exceed 50 %. In the USA the storage loss is 9 %. In Denmark the granary weevil causes a loss of stored grain at about 2 %, but usually this loss is noted as regular stock loss. Among oth…

4. Packaging

…that they have penetrated through the packaging either in the storage, the store or at the customers’ homes. But no matter how it happened the consumer will inevitably make the manufacturer responsible for the pests’ presence. It is therefore not sufficient to ensure that the product is free from pests when it leaves the factory. One must also seek to protect against invasions during storage and distribution. This is partly done with appropriate p…

The granary weevil

…rgies to people who work with grain. The weevils cannot reproduce in grain stored at temperatures below 13 – 14 ° C, if there are no local warm pockets. Fig. 5.42. Granary weevil. Larva and pupa, which are rarely seen as they live inside kernels, and adult beetle. Extermination is best done with phosphoresced hydrogen gas when dealing with large quantities of grain. In small batches and in households, physical methods are often more convenient: He…

The brown house moth

…h. It is even worse if the brown house moth attack grain ceilings and seed stores or other places where different types of plant materials are stored. For instance, moist feed, flour, groats, or powdered milk. Here, the brown house moth can quickly do great damage to the stock. Prevention and pest control When it comes to keeping brown house moth from buildings, the strategy should rest on prevention. The brown house moth will search for moist foo…

Prevention of damage by pests in kitchens and food factories

…grounds for all sorts of pests. In a kitchen or dining room it is best to store foodstuffs in tight-fitting containers, but there is no guarantee that they have not been infected beforehand. Many pests have an incredible ability to find their way into containers that seem sealed. Foodstuffs should not be kept longer than is absolutely necessary, especially if there has been a previous history of pest infestation in the kitchen. It may be better,…

Tick removal

…atural size). As evidenced, there are valid reasons why contact with the castor bean tick should be avoided. If you are bitten by the castor bean tick, be sure to remove it quickly. There are special tick pesticides that ease removal of ticks. A gentle spray of the ticks with an insect spray containing pyrethrin I and II + piperonyl butoxide have the same effect. Shampoos containing the same substances can be used if a human or a pet is infested b…

1. Proper organisation of the company

…nests. Outdoor storage areas: Packaging, pallets, etc., which at times are stored outdoors should be raised at least 0.5 m above the ground. This will reduce the risk of them being used as hiding places for pests of various kinds that can then be brought inside the building. Light attract many insects. Bright lights outdoors on or nearby the buildings can attract insects in large numbers at night. Should there be lights at night then it should not…

Tobacco beetle

…here may be several attacks over a longer period. It is necessary that you store all food in airtight containers that make it difficult for the tobacco beetle to enter. In addition, you should make sure that your food is stored at max. 15 degrees. In a food warehouse, it is possible to take advantage of the fact that the development of the tobacco beetle stops at 20 degrees. All live beetles will simultaneously die after 15 days at 0 degrees, seve…

B: The seed niche

…g. Imported seeds containing these weevils may be massively damaged during storage. Insects in similar products, such as coffee bean weevils can infest leguminous plants too. Bean flour and pea flour are somewhat toxic to flour moths. 3. Pests of nut kernels and dried fruits: The moths dominate this area. It is essentially the same species of moth that eat almonds, peanuts, hazelnuts and other nuts, which in storage are freed of the hard shell, an…

Ticks

…(as larvae, as nymphs and as adults). The pigeon tick needs a total of five blood meals. The risk of not being able to find the next host is quite large. Ticks get by laying many eggs and by being able to live a long time without food. Three kinds of ticks can be especially troublesome: The castor bean tick, which is an outdoor species and brown dog tick and the pigeon tick which are two indoor species with dogs and pigeons as the main hosts, resp…

Internal

…is normally a tiny area, the spermatheca, which stores sperm. The sperm is stored in the spermatheca during mating and from here the sperm is later released and will fertilize the eggs one by one when they pass through the vestibulum. The vestibulum is also connected to glands that can give off sticky matter on egg surfaces. The male reproductive organs consist mainly of testes where sperm is formed. From each testis, a sperm tube leads to the sem…

Ham beetle

…ried fish, and cocoa beans. There is also a risk of finding ham beetles in stored fishmeal, medicinal products and in powdered eggs and milk. When they are not eating carrion or dried food, they like to prey on other insects. Both ham beetles and ham beetle larvae like to eat smaller insects. However, the larvae are the hungriest, and therefore eat significantly more than ham beetles. Damage Although, as mentioned, there are three different specie…

Index

…irs Stinging jellyfish Stinging tentacles Stomoxys calcitrans Storage mite Storage mites Storm bug Stueflue Stylostom Sucking louse Sulphur ointment Tabanidae Tabanus bovinus Tactic veto Tarantula Tarsonemus Tarsonemus rakowiensis Tegenaria domestica Tentacles Thaumetopoea pinivora The American house dust mite The blue jellyfish The crab louse The Eastern Pine Processionary The European adder The European house dust mite The European viper The Gre…

Pests in food stuff

…st infestation in food stuff. To prevent attacks, all food stuff should be stored as cool and dry as possible. It is an advantage to use closed plastic bags and containers with air-tight lids. If there are food stuff that are rarely used, it is a good idea on a regular basis to check them for pest. If the kitchen has previously been infested with pests, it is recommended to purchase smaller amounts. It is also an advantage to store the exposed foo…

Plaster beetles

…resence is a warning that the product may have decreased in quality due to fungal growth and it may even be unhealthy to consume. Plaster beetles are exterminated and prevented by making sure that the product is dry and stored in a dry environment, or in short time so that the mould fails to make an impact. Chemical control of plaster beetles is quite meaningless alone, but may be an addition to drying products and storage rooms….

History of the dark flour beetle

…ot yet emerged as a real pest. Individual findings of the beetle in London storages were recorded in 1962-1965. The pests were found on or in poisoned rodent traps. Visits to the company that had supplied the oatmeal to the traps gave no result at first. Seven years later the beetle was found in the company’s premises which after British pest laboratory’s estimates came from the originally infected oatmeal. Dark flour beetle larva The dark flour b…

Grain beetles

…hern Europe. They require fairly high temperatures in order to develop and they are tolerant to humidity levels as low as 10% RH. It is assumed that these beetles are supplied to us with imports from warm countries and they can survive in grain stores with hot pockets and in warm rooms in general. The extermination should not cause problems. Grain beetles can be controlled in the same way as weevils and they are even easier to exterminate with poi…

The khapra beetle

…o into a kind of hibernation. That way they can survive for years until food arrives to the warehouse. Its ability to hide makes the extermination quite difficult. Khapra beetle, adult and larva This inconspicuous beetle has become one of the world’s most unpopular storage pests. The khapra beetle was introduced in the United States at some point in 1952 – 1953. Here it spread quickly to a large part of the American malt houses, mills and grain st…

Flour moth in the industry

…e stored separately from the production. Ideally, returned goods should be stored in a completely different room than the production, preferably further away. Cleanliness is also a good way to prevent. Sweeping and vacuuming flour and dust will minimize the risk of eggs being laid in it. Pipes, funnels, and screens should be cleaned regularly, and so should machinery and the premises themselves. Flour sacks or the like should not be allowed to lie…

Practical information

…e the coarsest impurities from the Arabic gum lumps. The mixture should be stored in a bottle with a stopper (not rubber or cork) and is stable for many years. The bottle should be labelled with “corrosive” and “toxic”. Whenever you make a preparation, start by placing a drop of the mixture on a glass slide. The tip of a needle is dipped into the drop and is moved so that the insect is affected by the tip and adheres thereto. The insect is placed…