| 单词 | Aphis |
| 例句 | He added, “Aphis has seen a reduction of more than 200 animal-health professionals in that time. The need to rebuild our capacity is critical.” The Looming Threat of Avian Flu 2016-04-13T04:00:00Z The peculiar life-cycle in which successive generations are produced through the summer months by virgin females—the egg developing within the body of the mother—is described at length in the articles Aphides and Phylloxera. Encyclopaedia Britannica, 11th Edition, Volume 13, Slice 3 "Helmont, Jean" to "Hernosand" 2012-04-14T02:00:23.707Z They are carnivorous and feed on small insects, especially Aphides. Directions for Collecting and Preserving Insects 2012-03-28T02:00:31.483Z Yellow spots are also a frequent symptom of the presence of Aphides, of Red Spider, etc. Disease in Plants 2012-03-01T03:00:22Z There is a species of Aphis which lives on the roots of grass, and some ants collect these into their nests, keeping them, in fact, just as we do cows. On the Origin and Metamorphoses of Insects 2011-12-05T03:00:46.667Z Myers, who oversees the Aphis unit that led the response to the Midwestern outbreak, “are scared to death.” The Looming Threat of Avian Flu 2016-04-13T04:00:00Z No one, who is acquainted with the Aphides, and the various insects which prey upon them, will ever permit a valuable plant to suffer injury from these pests. American Pomology Apples 2011-10-03T02:00:29.477Z With Aphides and Coccids which are covered with an abundant waxy secretion which can not be readily brushed away, we have adopted the plan of melting the wax. Directions for Collecting and Preserving Insects 2012-03-28T02:00:31.483Z Phytoptus, Aphides, etc.—but in others the stimulus to hypertrophy starts by the puncture of the embryonic tissue of a leaf, root, etc., by the ovipositor of the female insect, which then lays an egg—e.g. Disease in Plants 2012-03-01T03:00:22Z Again in Aphis, the embryology of which has been so well worked out by Huxley,18 the case is very similar, although the legs are somewhat later in making their appearance. On the Origin and Metamorphoses of Insects 2011-12-05T03:00:46.667Z Several other varieties of galls are produced by Aphides on species of Pistacia. Encyclopaedia Britannica, 11th Edition, Volume 11, Slice 4 "G" to "Gaskell, Elizabeth" 2011-08-24T02:00:20.690Z They hatch into small blackish larvæ, which are active, and which boldly attack an Aphis much larger than themselves, leaving only the empty skin. American Pomology Apples 2011-10-03T02:00:29.477Z Others have ample wings and closely resemble large Aphides. Directions for Collecting and Preserving Insects 2012-03-28T02:00:31.483Z American Blight, or Woolly Aphis, on Apples especially, causes the tumour-like swellings covered with sticky white fluff, which is a waxy excretion of the insect. Disease in Plants 2012-03-01T03:00:22Z Aphis or Green Fly A small, pale green louse, winged or wingless, with a soft, fat, oval body apparently too big for its legs. Making a Rose Garden 2011-07-29T02:00:21.533Z Aphides are born, as a rule, alive, and the young soon commence to reproduce again. Encyclopaedia Britannica, 11th Edition, Volume 8, Slice 10 "Echinoderma" to "Edward" 2011-01-19T03:00:19.027Z Coccinelidæ, or Lady-birds, are most valuable aids to the cultivator, who is constantly liable to have his crops destroyed by the various species of Aphides. American Pomology Apples 2011-10-03T02:00:29.477Z Dry Preservation of Aphides and other soft-bodied Insects.—Difficulty has always been experienced in preserving soft-bodied insects, particularly Aphides, in a condition serviceable for subsequent scientific study. Directions for Collecting and Preserving Insects 2012-03-28T02:00:31.483Z In many of these cases the honey-dew is excreted by Aphides, which suck the juices of the leaves and pour out the saccharine liquid from their bodies. Disease in Plants 2012-03-01T03:00:22Z Apart from their importance from the economic standpoint, Aphides are chiefly remarkable for the phenomena connected with the propagation of the species. Encyclopaedia Britannica, 11th Edition, Volume 2, Slice 2 "Anjar" to "Apollo" For piercing-mouthed pests like Aphides no wash is of use unless it contains a basis of soft soap. Encyclopaedia Britannica, 11th Edition, Volume 8, Slice 10 "Echinoderma" to "Edward" 2011-01-19T03:00:19.027Z Some entomologists have called Aphides the Ants' cows. American Pomology Apples 2011-10-03T02:00:29.477Z Many Aphides and Coccids are covered with a waxy secretion which interferes very materially with their easy examination. Directions for Collecting and Preserving Insects 2012-03-28T02:00:31.483Z Woods has lately shown that this disease is due to Aphides only, the bacteria having nothing to do with the disease primarily, Stigmonose, Bull. Disease in Plants 2012-03-01T03:00:22Z The pretty green Lace-wing Fly or Aphis Lion is also useful, as its larvæ are provided with "large sickle-shaped jaws for picking the Green Fly off the plants." Roses and Rose Growing Aphides often ruin whole crops of fruit, corn, hops, &c., by sucking out the sap, and not only check growth, but may even entail the death of the plant. Encyclopaedia Britannica, 11th Edition, Volume 8, Slice 10 "Echinoderma" to "Edward" 2011-01-19T03:00:19.027Z Aphis lanigera, now called Eriosoma, or the Woolly Aphis, was first described in 1801 as infesting the apple trees in Germany. American Pomology Apples 2011-10-03T02:00:29.477Z A study of the germ cells of Aphis rosæ and Aphis œnotheræ. Studies in Spermatogenesis Part II Characteristic curling and puckering, with yellow and orange tints, of the terminal leaves of Apples, Pears, etc., are due to insects of the genera Aphis, Psylla, etc. Disease in Plants 2012-03-01T03:00:22Z And the Ichneumon and Chalcid Flies lay their eggs in the bodies of the Aphides and their maggots feed on them from within. Roses and Rose Growing The fact that no males develop from the fertilized eggs of Aphis might be offered as a reason for its absence, but such an argument would not apply to Termopsis. Studies in Spermatogenesis Part I Aphides have the power of leaping, like the leaf-hoppers, but they differ from those insects in having very large transparent upper wings, which cover the sides of the body like a steep roof. American Pomology Apples 2011-10-03T02:00:29.477Z The principal enemies of the hop are "mould" caused by the fungus Sphærotheca Castagnei, and several kinds of insects, especially the "green fly," Aphis humuli, but the high wind is most to be dreaded. A Week's Tramp in Dickens-Land ReturnThere is little doubt, however, that some species of Aphides and allied Coccidæ would be liable to extermination if not protected by their ant masters. The Industries of Animals If therefore the honey dew is kept off by destroying the Aphides which secrete it, Sooty Mould will not appear. Roses and Rose Growing “Dances are but the vanity of this world,” moaned a sedate matron; “but woe for my dear pet Aphides, with their six hundred thousand children, who will be dead before they are born!” Our Young Folks, Vol 1, No. 1 An Illustrated Magazine Aphis mali, or the Apple Leaf-louse, is a small, green insect without wings, accompanied by a few black and green ones having wings. American Pomology Apples 2011-10-03T02:00:29.477Z Not only, moreover, do the Ants protect the Aphides themselves, but collect their eggs in autumn, and tend them carefully through the winter, ready for the next spring. The Beauties of Nature and the Wonders of the World We Live In They have been known to repopulate their territories after an epidemic, or at least after the destruction of their Aphides. The Industries of Animals Green Fly, or Rose Aphis, is alas! too well known in every garden to need much description. Roses and Rose Growing Aphides but once impregnated for a series of generations. Langstroth on the Hive and the Honey-Bee A Bee Keeper's Manual The Aphides have more numerous, more active, and more inveterate enemies than insects of any other group—these are the means by which their wonderful fecundity is kept in check. American Pomology Apples 2011-10-03T02:00:29.477Z Some species keep Aphides on trees and bushes, others collect root-feeding Aphides into their nests. The Beauties of Nature and the Wonders of the World We Live In In order to have their milkers at their disposal, without removing them from pasture, the ants make tunnels along the stalk, and enclose within it all the Aphides they meet. The Industries of Animals The Aphides breathe through pores at the sides of their bodies. Roses and Rose Growing The Syrphus fly, or Aphis eater, deserves more than the passing notice which we bestow upon it. Our Common Insects A Popular Account of the Insects of Our Fields, Forests, Gardens and Houses These insects find their way to trees or plants that are infested with their proper food, the Aphides. American Pomology Apples 2011-10-03T02:00:29.477Z They serve as cows to the Ants, which feed on the honey-dew secreted by the Aphides. The Beauties of Nature and the Wonders of the World We Live In An allied species of ant, the Lasius brunneus, lives almost entirely on the sweet secretion of large Aphides in the bark of oaks and walnut trees. The Industries of Animals As far as I know, with the exception of an Aphis brush—a useful invention, but one which needs very gentle handling—there are only two safe remedies for this universal plague. Roses and Rose Growing The grain Aphis, in certain years, desolates our wheat fields. Our Common Insects A Popular Account of the Insects of Our Fields, Forests, Gardens and Houses The perfect insect, as well as the larvæ, feed upon Aphides, and instead of being destroyed, they should be cherished and encouraged. American Pomology Apples 2011-10-03T02:00:29.477Z You all know what are called plant-lice, those nasty green or black flies called Aphides, which cover the leaves or branches of so many trees and flowers, and do most terrible mischief. Country Walks of a Naturalist with His Children Many lead to the pens of the Aphides; they reach from the anthill as far as the foot of a plant where these insects are abundant. The Industries of Animals Black winter eggs of Aphis showing how they are deposited in masses on twigs of apple. An Elementary Study of Insects I have also observed another mite devouring the Aphides on the rose leaves in my garden, so that a few mites may be set down as beneficial to vegetation. Our Common Insects A Popular Account of the Insects of Our Fields, Forests, Gardens and Houses Aphis vitis?, or the Vine Aphis, is often quite troublesome on vigorous young shoots of the grape vine, both wild and cultivated, particularly the former. American Pomology Apples 2011-10-03T02:00:29.477Z Aphis or green plant louse is the most commonly encountered of all the insect pests. Gardening Indoors and Under Glass A Practical Guide to the Planting, Care and Propagation of House Plants, and to the Construction and Management of Hotbed, Coldframe and Small Greenhouse Ants have true domestic animals belonging to a variety of species, but the most widely spread are the Claviger and the Aphides or plant-lice. The Industries of Animals Aphides, or plant lice, are of seasonal importance. Apple Growing Aphis, you know, is the same as aphid, or plant louse. The Insect Folk He will collect some of the Aphis' enemies alive, carry them to the affected plant, and set them free to do their work; there they will remain while the food lasts. American Pomology Apples 2011-10-03T02:00:29.477Z Few readers are unacquainted with the Aphides, or plant-lice, those little wingless insects which infest our plants and herbs in myriads in summer. A Book of Natural History Young Folks' Library Volume XIV. Aphis never bothers them, while Terry and some other varieties nearly had the whole crop ruined by this pest in 1914. Trees, Fruits and Flowers of Minnesota, 1916 Embracing the Transactions of the Minnesota State Horticultural Society,Volume 44, from December 1, 1915, to December 1, 1916, Including the Twelve Numbers of "The Minnesota Horticulturist" for 1916 This is to keep the rose Aphis at bay, the little soft green fly that is as succulent as the sap upon which it feeds. The Garden, You, and I Aphis and thrips are persistent enemies of this plant, and will need constant attention. The Culture of Vegetables and Flowers From Seeds and Roots 16th Edition The Coccinellidæ, mentioned as useful members of the order Coleoptera, on a previous page, are among the most active enemies of the Aphides. American Pomology Apples 2011-10-03T02:00:29.477Z Enemies: Aphides or plant lice that suck the sap from the leaves in spring and early summer are the chief enemies of the tree. Studies of Trees Aphides, or plant-lice, make their presence known by the plant assuming an unhealthy appearance, the leaves curling up, etc. Gardening for the Million Besides there is another and much more effective way of transmigration by the kind assistance of the ant who colonizes the scalebug as well for its wax as it colonizes the Aphis for its honey. Scientific American Supplement, No. 286, June 25, 1881 Aphis in some form or other is the most persistent and perplexing of plant pests. The Culture of Vegetables and Flowers From Seeds and Roots 16th Edition They deposit their eggs where Aphides exist; the maggot, which hatches from these, seizes upon the first Aphis that comes within his reach, and sucks its fluids. American Pomology Apples 2011-10-03T02:00:29.477Z They serve as cows to the ants, which feed on the honey-dew secreted by the Aphides. The Junior Classics — Volume 8 Animal and Nature Stories Aphides or black-fly may be destroyed by tobacco dust and syringing well with an infusion of soft soap. Gardening for the Million These are the Aphides—sometimes unprettily called plant-lice, and vaguely spoken of by the uninformed as "blight"—and they nourish themselves on vegetable juices, that thin green blood which is the plant's life. Birds in Town and Village Two methods for the destruction of Aphis are in vogue. The Culture of Vegetables and Flowers From Seeds and Roots 16th Edition The Ichneumon-flies are parasitic, their larvæ feed upon the substance of the Aphides. American Pomology Apples 2011-10-03T02:00:29.477Z Of these the most important are Aphides on trees and bushes; others collect root-feeding Aphides into their nests. The Junior Classics — Volume 8 Animal and Nature Stories Aphides may also be cleared by means of tobacco smoke, but after this has been applied the plant should be well syringed. Enquire Within Upon Everything The Great Victorian Domestic Standby There is an instance of this double mode of production in the animal kingdom, which is equally extraordinary: the same species of Aphis is viviparous in summer, and oviparous in autumn. The Botanic Garden. Part II. Containing the Loves of the Plants. a Poem. With Philosophical Notes. The other remedy is to use one of the many liquids which are inimical to the life of Aphis and other insect pests. The Culture of Vegetables and Flowers From Seeds and Roots 16th Edition You are all of you familiar with that little green insect, the Aphis or blight, as it is called. Darwiniana : Essays — Volume 02 Not only, moreover, do the ants protect the Aphides themselves, but collect their eggs in autumn, and tend them carefully through the winter, ready for the next spring. The Junior Classics — Volume 8 Animal and Nature Stories In loose, light soils, the Aphis, or Green Fly, often penetrates to the roots of strawberry plants in immense numbers, and they suck away life or vitality. Success with Small Fruits I sent you, through the booksellers, some time ago a copy of my memoir on Aphis. Life and Letters of Thomas Henry Huxley — Volume 1 Soft soap dissolved in water makes a cheap and effectual wash for exterminating all kinds of Aphis, and to these ingredients quassia may with advantage be added. The Culture of Vegetables and Flowers From Seeds and Roots 16th Edition The winged Aphis also remains, the Ant, the Mosquito and many another of the smaller insects. More Hunting Wasps American Blight, or Woolly Aphis, generally appears first on trees grafted on dwarfing stocks, particularly the bad forms of the Paradise Apple. The Culture of Vegetables and Flowers From Seeds and Roots 16th Edition The Indian Azaleas are apt to be beset by Thrips, as the Grape-vine is by Scale, the Pineapple by Mealy Bug, and the Rose by Green Aphis. The Culture of Vegetables and Flowers From Seeds and Roots 16th Edition Aphis is extremely partial to these Lilies, particularly if they are badly grown and allowed to suffer for the want of water. The Culture of Vegetables and Flowers From Seeds and Roots 16th Edition |
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