Habits and Traits of the Asian Longhorned Beetle, Anoplophora glabripennis

A recent immigrant to the United States, the Asian longhorned beetle (ALB) made its presence known quickly. Accidental introductions, probably in wooden packing crates from China, led to infestations in New York and Chicago in the 1990s. Thousands of trees were chipped and burned to prevent its spread. More recently, Anoplophora glabripennis appeared in New Jersey and Toronto, Canada. What makes this beetle so dangerous to our trees? All four stages of the life cycle damage the host trees. Description: The Asian Longhorned Beetle belongs to the family of wood boring beetles, Cerambycidae. Adult beetles measure 1-1 ½ inches in length. Their shiny black bodies have white spots or markings, and the long antennae have alternating black and white stripes. The Asian longhorned beetle may be mistaken for two species native to the U.S., the cottonwood borer and the whitespotted sawyer. All other stages of the life cycle occur within the host tree, so its not likely you will see them. The female chews away a small amount of bark and lays white, oval eggs singly within the tree. Larvae, which are also white and resemble small grubs, chew their way through the vascular tissue of the tree and move into the wood. Pupation happens within the tunnels the larvae create in the wood. The newly emerged adult chews its way out of the tree. Usually, identification of this pest is made by observing damage to the host trees, and then finding an adult beetle to confirm the suspected infestation. When the female oviposits, it causes the sap to weep. When a tree has multiple wounds with dripping sap, wood borers may be suspected. As the adults chew their way out of the tree, they push large amounts of sawdust from their exit holes. This accumulated sawdust, usually around the base of the tree or piled in the crotch of branches, is another sign of the Asian longhorned beetle. The adult beetle emerges from an oval exit hole about the size of a pencil eraser. Classification: Kingdom - AnimaliaPhylum - ArthropodaClass - InsectaOrder - ColeopteraFamily - CerambycidaeGenus - AnoplophoraSpecies - A. glabripennis Diet: Asian longhorned beetles feed on wood of many common hardwood species: birches, common horsechestnuts, elms, hackberries, London planes, maples, mountain ashes, poplars, aspens, and willows. They show a particular preference for maples. Larvae feed on the phloem tissue and wood; adults feed on bark during their mating and egg-laying period. Life Cycle: Asian longhorned beetles undergo complete metamorphosis with four stages: egg, larva, pupa, and adult. Egg - Eggs are laid singly within the host trees bark, and hatch in 1-2 weeks.Larva  - Newly hatched larvae tunnel into the vascular tissue of the tree. As they mature, larvae migrate into the wood, causing extensive damage. Larvae may reach 5 cm in length when fully grown, feeding for at least 3 months.Pupa - At maturity, the larvae move near the surface of the tree (under the bark) to pupate. Adults emerge in about 18 days.Adult - The adult beetles actively mate and lay eggs throughout the summer and fall. Special Adaptations and Defenses: Asian longhorned beetle larvae and adults chew wood with large mandibles. Adults, especially males, display long antennae used to sense the sex pheromones of potential mates. Habitat: Areas where host trees are available, particularly where maples, elms, and ash are in abundance. In the U.S. and Canada, known Asian longhorned beetle infestations have occurred in urban areas. Range: The Asian longhorned beetles native range includes China and Korea. Accidental introductions expanded the range to include the United States, Canada, and Austria, hopefully temporarily. The introduced populations are believed to be under control. Other Common Names: Starry sky beetle, Asian cerambycid beetle Sources: Asian Longhorned Beetle, Canadian Forest ServiceAsian Longhorned Beetle, University of Vermont Entomology Researh Laboratory

Social Work Reflection Paper - 871 Words

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Pestel and Porters Tesco Free Essays

PESTEL provides an analysis into the external business factors which may effect the company performances. It can be used on a daily, weekly, monthly and yearly basis to analysis the macro environmental effects on a company. POLITICAL-EU Free trading laws promoting trade between western and eastern European resulting in expansion of tesco retail outlets ECONOMIC-Economic recession has affected consumers buying behaviors. We will write a custom essay sample on Pestel and Porters Tesco or any similar topic only for you Order Now Consumers buy essential commodities however the demand for luxury has decreased. Consumers spend less time eating out and spend more time eating in, in order to cut down on cost. SOCIAL-The majority of the uk population is made up of retired people who spend less on food and eat less. Consumer attitude changing to become more healthy. Increase in demand for organic foods. Increase in UK ethnicity population has lead to a wide range of food items available in store TECHNOLOGICAL-Increase in population access to internet has caused an increase in Online grocery shopping. Loyaty programs has enabled tesco to analyze consumers spending habits. Mobile technology allowing convenient shopping on mobile devices. Self service tills makes buying quicker for customers ENVIRONMENTAL-Incentives to re-use bags and be more environmentally friendly. Recycling center’s available at tescos. Carbon foot print data available on some products. Greener living scheme which advices customers on environmental issues such as how to reduce food waste and carbon foot print when preparing meals LEGAL-Increase in VAT rate will affect the non-food sector of tescos. Increase of minimum wage of over 21s (from 6. 08 to 6. 9) impacts operating costs. PORTERS 5 forces allows the analysis of the competitive environment. SUBSTITUTE of PRODUCTS and services-Low threat of substitute for food products as tescos provides quality goods at low prices Substitutes- indirect- pubs offering food, local marketss or shops, on line suppliers New COMPETITORS – Low rate of competition from new entrants into the market because it takes a huge investment and a new business pathway to capture customers however lidl, aldi have come in to the market capturing a new market with lower prices. Marks and spencer offer food at the high end of the market Old COMPETITORS – High rate of competition from other food retail stores such as asda, Morrison, Sainsbury’s and waitros in the form of price, promotions and retaining customer loyalty. Competitors Sainsbury etc compete as a traditional competitor for market share BARGINING POWER OF BUYERS High bargaining powers of buyers in the supermarkets, high. We have lots of choice as to where we shop. Tesco have to keep on their toes to be competitive. When I take the DLR to work however the buyer has no power, no choice, so prices go up BARGINING POWERS OF SUPPLIERS – suppliers to supermarkets have little power and get squeezed by the big boys. they have to supply at a lower price, will not get paid by tesco until it suits tesco. How to cite Pestel and Porters Tesco, Papers