Tomicus piniperda
Encyclopedia
Tomicus piniperda is a bark beetle native throughout Europe
Europe
Europe is, by convention, one of the world's seven continents. Comprising the westernmost peninsula of Eurasia, Europe is generally 'divided' from Asia to its east by the watershed divides of the Ural and Caucasus Mountains, the Ural River, the Caspian and Black Seas, and the waterways connecting...

, northwestern Africa
Africa
Africa is the world's second largest and second most populous continent, after Asia. At about 30.2 million km² including adjacent islands, it covers 6% of the Earth's total surface area and 20.4% of the total land area...

, and northern Asia
Asia
Asia is the world's largest and most populous continent, located primarily in the eastern and northern hemispheres. It covers 8.7% of the Earth's total surface area and with approximately 3.879 billion people, it hosts 60% of the world's current human population...

. It is one of the most destructive shoot-feeding species in northern Europe.

Its primary host plant is Scots Pine
Scots Pine
Pinus sylvestris, commonly known as the Scots Pine, is a species of pine native to Europe and Asia, ranging from Scotland, Ireland and Portugal in the west, east to eastern Siberia, south to the Caucasus Mountains, and as far north as well inside the Arctic Circle in Scandinavia...

 Pinus sylvestris, but it also uses European Black Pine
European Black Pine
Pinus nigra, the European Black Pine, is a moderately variable species of pine, occurring across southern Mediterranean Europe from Spain to the Crimea, in Asia Minor and on Cyprus, and in the high mountains of the Maghreb in North Africa....

 P. nigra, Maritime Pine
Maritime Pine
Pinus pinaster, the Maritime Pine, is a pine native to the western and southwestern Mediterranean region. The pejorative name 'pinaster' is derived from pinus + aster, translating as 'a poor imitation of a pine' Pinus pinaster, the Maritime Pine, is a pine native to the western and southwestern...

 P. pinaster, Eastern White Pine
Eastern White Pine
Pinus strobus, commonly known as the eastern white pine, is a large pine native to eastern North America, occurring from Newfoundland west to Minnesota and southeastern Manitoba, and south along the Appalachian Mountains to the northern edge of Georgia.It is occasionally known as simply white pine,...

 P. strobus, Red Pine
Red Pine
Pinus resinosa, commonly known as the red pine or Norway pine, is pine native to North America. The Red Pine occurs from Newfoundland west to Manitoba, and south to Pennsylvania, with several smaller, disjunct populations occurring in the Appalachian Mountains in Virginia and West Virginia, as well...

 P. resinosa, Jack Pine
Jack Pine
Jack pine is a North American pine with its native range in Canada east of the Rocky Mountains from Northwest Territories to Nova Scotia, and the northeast of the United States from Minnesota to Maine, with the southernmost part of the range just into northwest Indiana...

 P. banksiana and other pine
Pine
Pines are trees in the genus Pinus ,in the family Pinaceae. They make up the monotypic subfamily Pinoideae. There are about 115 species of pine, although different authorities accept between 105 and 125 species.-Etymology:...

s to a small extent, and more rarely on spruce
Spruce
A spruce is a tree of the genus Picea , a genus of about 35 species of coniferous evergreen trees in the Family Pinaceae, found in the northern temperate and boreal regions of the earth. Spruces are large trees, from tall when mature, and can be distinguished by their whorled branches and conical...

 Picea and larch
Larch
Larches are conifers in the genus Larix, in the family Pinaceae. Growing from 15 to 50m tall, they are native to much of the cooler temperate northern hemisphere, on lowlands in the north and high on mountains further south...

 Larix.

Description

It is black or dark brown, 3.5–4.8 mm long, with a cylindrical body, rounded at the head and abdomen ends. It breeds in recently dead and dying trees, most often windblown trees lying on the ground but also in e.g. fire-killed standing trees. The adults tunnel a breeding gallery in spring, up to 25 cm long, parallel to the wood grain, where they lay their eggs. On hatching, the larvae chew through the phloem
Phloem
In vascular plants, phloem is the living tissue that carries organic nutrients , in particular, glucose, a sugar, to all parts of the plant where needed. In trees, the phloem is the innermost layer of the bark, hence the name, derived from the Greek word "bark"...

 radially from the gallery for several months, emerging as new adults in late summer. The adults then feed through the autumn and winter on the pith
Pith
Pith, or medulla, is a tissue in the stems of vascular plants. Pith is composed of soft, spongy parenchyma cells, which store and transport nutrients throughout the plant. In eudicots, pith is located in the center of the stem. In monocots, it extends also into flowering stems and roots...

 in strong apical shoots of healthy young trees, killing the bored-out shoots. This does not kill the tree, but causes damage to the growth form, reducing the economic value of the timber by reducing growth rates and stem straightness. There is one generation per year, with most adults dying after breeding, though a few survive to breed again a year later. Unlike most bark beetles, Tomicus piniperda does not use pheromone
Pheromone
A pheromone is a secreted or excreted chemical factor that triggers a social response in members of the same species. Pheromones are chemicals capable of acting outside the body of the secreting individual to impact the behavior of the receiving individual...

s for pre-breeding association and pairing, but instead homes in on the resin
Resin
Resin in the most specific use of the term is a hydrocarbon secretion of many plants, particularly coniferous trees. Resins are valued for their chemical properties and associated uses, such as the production of varnishes, adhesives, and food glazing agents; as an important source of raw materials...

 scent emitted by damaged specimens of the host species.

Taxonomy

Species closely related to Tomicus piniperda include Tomicus minor (lesser pine shoot beetle), with a similar distribution but ecologically separated, using standing dead pines and with its breeding galleries across the grain, not parallel to it; Tomicus destruens in the Mediterranean region, which differs in details of ecology, infesting primarily Stone Pine
Stone Pine
The Stone Pine , is also called Italian Stone Pine, or Umbrella Pine , and Parasol Pine. It is in the pine family Pinaceae and occasionally listed under the invalid name Pinus sativa. The tree is native to the Mediterranean region...

 P. pinea and Maritime Pine
Maritime Pine
Pinus pinaster, the Maritime Pine, is a pine native to the western and southwestern Mediterranean region. The pejorative name 'pinaster' is derived from pinus + aster, translating as 'a poor imitation of a pine' Pinus pinaster, the Maritime Pine, is a pine native to the western and southwestern...

 P. pinaster; and Tomicus yunnanensis in southwestern China
China
Chinese civilization may refer to:* China for more general discussion of the country.* Chinese culture* Greater China, the transnational community of ethnic Chinese.* History of China* Sinosphere, the area historically affected by Chinese culture...

 on Yunnan Pine
Pinus yunnanensis
Yunnan Pine is a species of conifer in the Pinaceae family.It is found only in China .-References:* Conifer Specialist Group 1998. . Downloaded on 10 July 2007....

 Pinus yunnanensis. Historically, these species were often not distinguished from T. piniperda, but they are reproductively isolated
Reproductive isolation
The mechanisms of reproductive isolation or hybridization barriers are a collection of mechanisms, behaviors and physiological processes that prevent the members of two different species that cross or mate from producing offspring, or which ensure that any offspring that may be produced is not...

, which has consequences for pest control
Pest control
Pest control refers to the regulation or management of a species defined as a pest, usually because it is perceived to be detrimental to a person's health, the ecology or the economy.-History:...

.

Invasive problems

The beetle has been introduced accidentally to northeastern North America
North America
North America is a continent wholly within the Northern Hemisphere and almost wholly within the Western Hemisphere. It is also considered a northern subcontinent of the Americas...

, where it has become an invasive species
Invasive species
"Invasive species", or invasive exotics, is a nomenclature term and categorization phrase used for flora and fauna, and for specific restoration-preservation processes in native habitats, with several definitions....

. The first known occurrence in North America was found in July 1992 at a Christmas tree
Christmas tree
The Christmas tree is a decorated evergreen coniferous tree, real or artificial, and a tradition associated with the celebration of Christmas. The tradition of decorating an evergreen tree at Christmas started in Livonia and Germany in the 16th century...

 farm close to Cleveland, Ohio
Ohio
Ohio is a Midwestern state in the United States. The 34th largest state by area in the U.S.,it is the 7th‑most populous with over 11.5 million residents, containing several major American cities and seven metropolitan areas with populations of 500,000 or more.The state's capital is Columbus...

, from where it has spread to 11 states in the United States
United States
The United States of America is a federal constitutional republic comprising fifty states and a federal district...

 and to Ontario
Ontario
Ontario is a province of Canada, located in east-central Canada. It is Canada's most populous province and second largest in total area. It is home to the nation's most populous city, Toronto, and the nation's capital, Ottawa....

 and Quebec
Quebec
Quebec or is a province in east-central Canada. It is the only Canadian province with a predominantly French-speaking population and the only one whose sole official language is French at the provincial level....

 in Canada
Canada
Canada is a North American country consisting of ten provinces and three territories. Located in the northern part of the continent, it extends from the Atlantic Ocean in the east to the Pacific Ocean in the west, and northward into the Arctic Ocean...

. The beetle has been identified as a serious pest in the United States. As a precautionary step to help protect pine
Pine
Pines are trees in the genus Pinus ,in the family Pinaceae. They make up the monotypic subfamily Pinoideae. There are about 115 species of pine, although different authorities accept between 105 and 125 species.-Etymology:...

 plantation
Plantation
A plantation is a long artificially established forest, farm or estate, where crops are grown for sale, often in distant markets rather than for local on-site consumption...

s, a United States federal quarantine was introduced in 1992 in the northeast and north-midwest, regulating movement of pine logs and bark, nursery stock, and Christmas trees from infested to uninfested areas, and a similar quarantine brought in to cover part of southeast Canada
Canada
Canada is a North American country consisting of ten provinces and three territories. Located in the northern part of the continent, it extends from the Atlantic Ocean in the east to the Pacific Ocean in the west, and northward into the Arctic Ocean...

 in 1993 by the Canadian authorities.

External links

  • pine shoot beetle on the University of Florida
    University of Florida
    The University of Florida is an American public land-grant, sea-grant, and space-grant research university located on a campus in Gainesville, Florida. The university traces its historical origins to 1853, and has operated continuously on its present Gainesville campus since September 1906...

     / Institute of Food and Agricultural Sciences
    Institute of Food and Agricultural Sciences
    The University of Florida’s Institute of Food and Agricultural Sciences is a federal-state-county partnership dedicated to developing knowledge in agriculture, human and natural resources, and the life sciences, and enhancing and sustaining the quality of human life by making that information...

     Featured Creatures website
  • Species Profile- Common Pine Shoot Beetle (Tomicus piniperda), National Invasive Species Information Center, United States National Agricultural Library
    United States National Agricultural Library
    The United States National Agricultural Library is one of the world's largest agricultural research libraries, and serves as a National Library of the United States and as the library of the United States Department of Agriculture...

    . Lists general information and resources for Common Pine Shoot Beetle.
The source of this article is wikipedia, the free encyclopedia.  The text of this article is licensed under the GFDL.
 
x
OK