Oxygen and Carbon Dioxide

posted in Health Issues on Thu Feb 14 2019 by Admin

Insects can tolerate a wide range of oxygen and carbon dioxide. Some insects can survive several days in the absence of oxygen by reducing their metabolic rates and utilizing the oxygen stored in their tissues. Other insec...

Injuries by chemicals agents

posted in Health Issues on Thu Feb 14 2019 by Admin

Chemical agents that cause injuries to insects are chemical insecticides and toxins or poisons produced by plants and microorganisms.

When insects are po...

Injuries by Physical agents. High temperature

posted in Health Issues on Thu Feb 14 2019 by Admin

Injuries by Physical agents

The common physical agents that cause injuries are: too high or too low temperature, high or low level of humidity, radiation, oxygen and carbon ...

Humidity

posted in Health Issues on Thu Feb 14 2019 by Admin

Insects require certain amount of moisture in their environment just as they need certain degrees of warmth. Actually the requirements of insects for moisture is closely correlated to that of temperature. Moisture alone, n...

Low temperature

posted in Health Issues on Thu Feb 14 2019 by Admin

Some insects can withstand extremely low temperatures, even below freezing point of water, to as low as -20°C.

Insects can be separated into three categories depending on their cold-hardiness:

...

Injuries by Mechanical agents

posted in Health Issues on Thu Feb 14 2019 by Admin

Non-infectious diseases

The non-infectious diseases are those in which no living micro-organism is involved. Such diseases are often considered as injuries caused by:

...

Radiation

posted in Health Issues on Thu Feb 14 2019 by Admin

Light affects insects in correlation with temperature and humidity. Direct sunshine may injure or kill an exposed insect largely because of heat and desiccation. Ultraviolet and infrared radiations, electric shocks, and supersoni...

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