The Economic Importance of Insects

Portada
Springer 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.
 

Páginas seleccionadas

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
Página de créditos

Otras ediciones - Ver todo

Términos y frases comunes

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.

Información bibliográfica