Behavioral toxicity, Feeding behavior, Pesticide, Heavy metal

1. Behavioral toxicity
by komal Gul

2. Behavioral toxicity is the study of abnormal
behavior that is caused by agents such as
pharmaceuticals and chemicals (natural and
synthetic) that are found in the environment or place
of work.

3.  Behavioral toxicity……..> intoxication hat impairs the users action and
increase the danger to individual.
 It is effect of toxicants on behavior
 An adverse behavioral change produced by psychotropic drugs,
 For example, insomnia, sedation, impaired psychomotor activity, or changes
in mental status.
 Factors causes behavioral changes are Environmental chemicals, including
heavy metals, solvents, fuels, pesticides, air pollutants, and even food
additives.

4. Behavior
Behavior is integrated outcome of nervous system
Thus it is connection between nervous toxicity and
behavior.
Neural and behavior work separate because the
workers in the fields used different methods

5. 1: Chasing
a toxicant can effect the time need to chase a prey
2: Catching
A toxicant can effect the number of tries needed to
catching a prey
3: Handling
Affect the no. Of bites required to kill the prey
4: Swallowing
Influence if the prey is swallowed most
Feeding behavior

6. • Pesticide enter in aquatic ecosystem causes fish death and other organism
like turtles, frogs which are important in food chain
• Reduce availability of insect an plant that serve as food
• Long term exposure can cause abnormality and mutation in fish larvae
• Fish show restlessness, rapid body movement, difficulty in respiration,
loss of balance
Pesticides

7. Heavy metal
• Lead mercury and manganese are associated with unique syndrome, other metal such as Aluminium, selenium
and thallium and tin are also been implicated adverse impact on behavior
• They range in severity from subjective complaints such as fatigue, depression, to clear neurological deficit
such as tremor
• Manganese is specially intriguing . the earliest indication of toxicity is typically consist of psychological signs
such as extreme emotional liability marked by abnormal crying or laughing .In American mining communities
where manganese intoxication is endemic, the syndrome is known as “ locura manganica” or manganese
madness

8. Herbicide
•Reduce fish reproductive success
•Kill plant result low oxygen…………>suffocation

9. Endocrine disruption
•Disrupt endocrine system
•Endocrine disruption results in adverse affect on development of brain and
nervous system , the growth and function of the reproductive system, and
response to stressors in the environment.