The Economic Importance of InsectsSpringer Science & Business Media, 31 dic 1996 - 395 páginas In the last few decades there has been an ever-increasing component in most BSc Zoology degree courses of cell biology, physiology and genetics, for spectacular developments have taken place in these fields. Some aspects of biotechnology are now also being included. In order to accommodate the new material, the old zoology courses were altered and the traditional two-year basis of systematics of the animal kingdom, comparative anatomy (and physiology) and evolution, was either severely trimmed or reduced and presented in an abridged form under another title. Soon after these course alterations came the swing to modular teaching in the form of a series of shorter, separate courses, some of which were optional. The entire BSc degree course took on a different appearance and several different basic themes became possible. One major result was that in the great majority of cases taxonomy and systematics were no longer taught and biology students graduated without this basic training. We field biologists did appreciate the rising interest in ecology and environ mental studies, but at the same time lamented the shortage of taxonomic skills, so that often field work was based on incorrect identifications. For years many of us with taxonomic inclinations have been bedevilled by the problem of teaching systematics to undergraduates. At a guess, maybe only 5% of students find systematics interesting. It is, however, the very basis of all studies in biology - the correct identification of the organism concerned and its relationships to others in the community. |
Índice
52 VETERINARY PESTS | 93 |
53 HOUSEHOLD AND STORED PRODUCTS PESTS | 106 |
54 AGRICULTURAL PESTS | 142 |
55 FORESTRY PESTS | 244 |
INSECT PEST CONTROL | 333 |
61 LEGISLATION | 334 |
62 PHYSICAL METHODS | 337 |
63 CULTURAL CONTROL | 340 |
64 BREEDINGGENETIC METHODS | 344 |
65 BIOLOGICAL CONTROL BIOCONTROL | 346 |
66 CHEMICAL CONTROL | 349 |
67 IPM | 355 |
68 PEST ERADICATION | 356 |
GLOSSARY | 359 |
REFERENCES AND FURTHER READING | 379 |
INDEX | 385 |
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Términos y frases comunes
Acarina adults Africa Fig agricultural animals Aphid Asia and North attack Beetles biocontrol Bite Bugs caterpillars cause cereals chemical Citrus cosmopolitan damage defoliate Diptera disease East Africa eggs Europe Family feed female Flea Flies flowers foliage forest trees forestry pests fruit trees galls genera genus Gramineae habitat Hemiptera Holarctic Hong Kong host humans important pests India infestation insect insect pests insecticides Kenya kill large numbers larvae larvae bore leaf Leaf-miners Leafhoppers leaves Lepidoptera live livestock major pests Mealybugs Mites Moth myiasis nest Noctuidae North America nymphs organisms pantropical parasites pathogens pest control pest population pest species pesticide phytophagous Pinus plants pollination polyphagous potato predators produce Psyllid pupa Pyralidae Sawflies seedlings seeds serious pests Skegness soil south China South East Asia temperate regions Termites Termitidae Thrips tion tropical Asia usually vectors Wasps Weevils wide range wood worldwide
Pasajes populares
Página 355 - FAO panel of experts on integrated pest control defined integrated control as 'a pest management system that, in the context of the associated environment and the population dynamics of the pest species, utilizes all suitable techniques and methods in as compatible a manner as possible and maintains the pest population at levels below those causing economic injury'.
Página 71 - Second node of stem formed, next-to-last leaf visible 8 Last leaf visible, but still rolled up, ear beginning to swell 9 Ligule of last leaf just visible 10 Sheath of last leaf completely grown out, ear swollen but not yet visible 10.1 First ears just visible (awns just showing in barley, ear escaping through split of sheath in wheat or oats) 10.2...
Página 336 - This is to certify that the plants or plant products described below have been inspected accordIng to appropriate procedures and are considered to be free from quarantine pests, and practically free from other injurious pests; and that they are considered to conform with tiw current phytosanituy regulations of the importing country.
Página 93 - UK in recent years there has been a dramatic increase in the number of cases of asthma.
Página 8 - The stamens and pistil may be in separate flowers, either on the same plant (monoecious) or on different plants (dioecious).
Página 59 - The Colorado Beetle Order of 1933 prohibits the keeping of any live Colorado Beetles and the spraying or other treatment, except under authority from the Ministry, of any crop infested or suspected of being infested with the Colorado Beetle. It is, therefore, especially important that, until instructions have been given by the Ministry's Inspectors, the crop should not be sprayed or interfered with in any way, as this...
Página 373 - Relative humidity The ratio, expressed as a percentage, of the water vapour present in a unit volume of air to that which the air would contain if saturated, at that temperature.
Página 9 - In wheat, the first flowers to open are situated about one-third of the way from the apex of the ear; the rest follow in succession both upwards and downwards from this point.
Página 366 - The living community considered as a whole, without undue emphasis on any of its parts or causal factors.
Referencias a este libro
Insect-Plant Biology Louis M. Schoonhoven,Joop J. A. van Loon,Marcel Dicke No hay ninguna vista previa disponible - 2005 |
Nature's Flyers: Birds, Insects, and the Biomechanics of Flight David E. Alexander Vista previa restringida - 2004 |
