|
Coconut Mite
''Aceria guerreronis'', the coconut mite, is an eriophyid mite which infests coconut plantations. It is economically devastating, and can destroy up to 60% of coconut production. The immature nuts are infested and injured by mites feeding in the portion covered by the perianth of the immature nut. Description The coconut mite is small, with a length of about and a width of ; this is too small to see with the naked eye. The mite is white and translucent, long and slender, with two pairs of legs. Populations build up rapidly, and the presence of this mite is generally indicated by the damage it does, and confirmed microscopically. Distribution ''Aceria guerreronis'' was first described by Hartford H Keifer in 1965 from Mexico, but it is unclear whether it originated from the Old or New World. The coconut palm originated in the South Pacific region and spread along the coasts of Asia, and later Africa. It was introduced into the Americas by traders in the sixteenth century, but w ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hartford H Keifer
Hartford Hammond Keifer (24 January 1902 – 20 August 1986) was a world authority on eriophyid mites. Based in California, he initially studied the local microlepidoptera before turning to mites in 1937. Personal life Keifer was born 1902 in Oroville, California, to John McCarl Keifer (1861–1928) and Elizabeth Burt (née Leggett; 1863–1922). As a child he had an interest in natural history and insects, and was encouraged by an aunt, Dr. Cordelia Burt Leggett. From 1920 to 1924, he attended the University of California, Berkeley and gained a Bachelor of Science degree in entomology. He married Mary Isabelle (née Ost; 1906–1990) in August 1928 and moved to Sacramento to work at the California State Department of Agriculture. Biography After graduation, Keifer worked for the Forest Service before accepting a position as an assistant to the curator at the California Academy of Sciences, San Francisco where he mounted and labelled a backlog of material. In 1925 he joined t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Syagrus Romanzoffiana
''Syagrus romanzoffiana'', the queen palm or cocos palm, is a palm native to South America, introduced throughout the world as a popular ornamental garden tree. ''S. romanzoffiana'' is a medium-sized palm, quickly reaching maturity at a height of up to tall, with pinnate leaves having as many as 494 pinnae ( leaflets), although more typically around 300, each pinna being around in length and in width. Etymology Named after Nikolay Rumyantsev (1754–1826), who was Russia's Foreign Minister and Imperial Chancellor and notable patron of the Russian voyages of exploration. He sponsored the first Russian circumnavigation of the globe. It was previously scientifically known as ''Cocos plumosa'', a name under which it became popular in the horticultural trade in the early 20th century. In some areas of the world the plant is still popularly known as the cocos palm. Taxonomy This palm was first scientifically described and validly published as ''Cocos romanzoffiana'' in 1822 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Arachnids Of North America
Arachnida () is a class of joint-legged invertebrate animals (arthropods), in the subphylum Chelicerata. Arachnida includes, among others, spiders, scorpions, ticks, mites, pseudoscorpions, harvestmen, camel spiders, whip spiders and vinegaroons. Almost all adult arachnids have eight legs, although the front pair of legs in some species has converted to a sensory function, while in other species, different appendages can grow large enough to take on the appearance of extra pairs of legs. The term is derived from the Greek word (''aráchnē'', 'spider'), from the myth of the hubristic human weaver Arachne, who was turned into a spider. Almost all extant arachnids are terrestrial, living mainly on land. However, some inhabit freshwater environments and, with the exception of the pelagic zone, marine environments as well. They comprise over 100,000 named species, of which 47,000 are species of spiders. Morphology Almost all adult arachnids have eight legs, unlike adult insects ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Animals Described In 1965
Animals are multicellular, eukaryotic organisms in the biological kingdom Animalia. With few exceptions, animals consume organic material, breathe oxygen, are able to move, can reproduce sexually, and go through an ontogenetic stage in which their body consists of a hollow sphere of cells, the blastula, during embryonic development. Over 1.5 million living animal species have been described—of which around 1 million are insects—but it has been estimated there are over 7 million animal species in total. Animals range in length from to . They have complex interactions with each other and their environments, forming intricate food webs. The scientific study of animals is known as zoology. Most living animal species are in Bilateria, a clade whose members have a bilaterally symmetric body plan. The Bilateria include the protostomes, containing animals such as nematodes, arthropods, flatworms, annelids and molluscs, and the deuterostomes, containing the echino ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Agricultural Pest Mites
Agriculture or farming is the practice of cultivating plants and livestock. Agriculture was the key development in the rise of sedentary human civilization, whereby farming of domesticated species created food surpluses that enabled people to live in cities. The history of agriculture began thousands of years ago. After gathering wild grains beginning at least 105,000 years ago, nascent farmers began to plant them around 11,500 years ago. Sheep, goats, pigs and cattle were domesticated over 10,000 years ago. Plants were independently cultivated in at least 11 regions of the world. Industrial agriculture based on large-scale monoculture in the twentieth century came to dominate agricultural output, though about 2 billion people still depended on subsistence agriculture. The major agricultural products can be broadly grouped into foods, fibers, fuels, and raw materials (such as rubber). Food classes include cereals (grains), vegetables, fruits, cooking oils, meat, milk, egg ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
_foto_06.JPG "Click for more on -> Syagrus Romanzoffiana")
