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The Aphid

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Google previewScience for Ninth Class Part 1 Biology

by Lakhmir Singh & Manjit Kaur

The aphid is a pest of ..................... plants. 9. ..................... and ..................... climate is more congenial for infestation of weeds, insect-pests and diseases. 10. Growing two or more crops but in the definite row pattern is known as ............................ . 11. The practice of growing of two crops simultaneously on the same piece of land is called .................. .................... . 12. Long white ...

Google previewDictionary of Entomology, Plant Pathology and Nematology (1998)

by O. P. Singh, S. K. Srivastava

The aphid produces parthenogenetically in plains. Parthenogenetic: Asexual. Patagium: A short or winged-like outgrowth on each side of the pro- thorax in certain insects, e.g. in some noctuid moths. They were well developed in primitive fossil dragonflies of the order Palaeodict- yoptera.

Google previewA Dictionary of Animal Behaviour (2014)

by David McFarland

it caresses the aphid with its antennae. This induces the aphid to exude from its ...

Google previewFoods and Food Production Encyclopedia (2012)

by Douglas M. Considine

The aphid generally lives on the sap of plants and is of major economic importance. The aphid is characterized by an intricate life cycle that results in a high rate of reproduction. In the temperate Zone, aphids hatch in the spring from winter eggs; these individuals are females known as stem mothers. They bear living young without mating (viviparity, parthenogenesis) and these, in turn, are females capable of the same type of reproduction. Late in the season, a generation known as the ...

Google previewEncyclopedia of Virology (1999)

by Allan Granoff, Robert G. Webster

The aphid must feed on phloem tissue to acquire and spread the virus. Because the virus must circulate and then accumulate in the accessory salivary gland of the aphid, a latent period of 8–24 h is necessary between the time the virus is acquired and the time it can be transmitted. Because the virus is persistent, aphids can travel thousands of miles in jet streams over several days, and still transmit the virus. This is important because crops can become infected by a different strain of ...

Google previewDictionary of Agriculture (2010)

by Bloomsbury Publishing

a greenfly The aphid population showed a 19% increase. (NOTE: Aphids are pests of some garden plants such as roses and may transmit virus diseases in crops such as potatoes and sugarbeet.) COMMENT: Cereal aphids are various species of greenfly.

Google previewVan Nostrand’s Scientific Encyclopedia (2013)

by Douglas M. Considine, Glenn D. Considine

The aphid generally lives on the sap of plants and is of major economic importance. The aphid is characterized by an intricate life cycle that results in a high rate of reproduction. In the temperate zone, aphids hatch in the spring from winter eggs; these individuals are females known as stem mothers. They bear living young without mating (viviparity, parthenogenesis) and these, in turn, are females capable of the same type of reproduction. Late in the season, a generation known as the ...

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