Ppt

1. EX-SITU CONSERVATION
Submitted To:
Bharti Singh Raipat
HOD
Dept. of Zoology
St. Xavier’s College
Ranchi
Submitted By: Kumari
Anshu
Class Roll no.: 442
Exam Roll no.:
22BS57410378

2. → The strategy of conservation depend on the nature of the
material and on the objective and scope of the activity.
→ The nature of the material defined by the length of the life
cycle , the mode of reproduction , the size of the individuals
and its ecological status , whether wind, or domesticated.
→ There are two basic approaches to germplasm
conservation namely in situ and ex situ conservation.
INTRODUCTI
ON

3. → Conservation biologists seek to maintain three important
aspects of life on Earth: biological diversity, ecologic integrity, and
ecological health.
→ Biological diversity is a measure of the diversity of all life at all
levels of organization.
→ Ecological integrity is a measure of the composition, structure,
and function of biological systems.
→ Ecological health is a measure of a biological system’s
resiliency and ability to maintain itself over time.
PRINCIPLES OF
CONSERVATION

4. → The conservation of nature is important for nature’s intrinsic
values, its instrumental values, and its psychological values.
→ Value systems determine how we view nature, and this may
vary within and among cultures.
Intrinsic values are those of nature itself, separate from a
usefulness to humans.
Instrumental values are based on the usefulness of nature to
humans.
Psychological values are those that contribute to the
psychological well-being of humans.

5. EX-SITU
CONSERVATION
• Defination :
• Ex situ conservation is the
conservation and maintenance of
samples of living organisms out side
their natural habitat , in the form of
whole plants, seeds, pollen, vegetative
propagules, tissue or cell cultures.
• Examples:- seed bank , gene bank

6. What is Ex – situ conservation :
• Ex situ conservation literally means “off site
conservation.
• It is the process of protecting an endangered
species, variety or breed of plant or animal out side
of its natural habitat.
• By removing part of the population from a
threatened habitat and placing it in a new location,
which may be a wild area or within the care of

7. • Agriculture biodiversity is also conserved in ex
situ conservations.
• This is primarily in the from of gene banks
where samples are stored in order to conserve
the genetic resources of major crop plants and
their wild relatives.
• That means ex- situ conservation is a process
of conserving endangered plants or animals in
the human care by giving them own

9. Advantages of ex situ conservation:
• Organisms are completely protected from
predation and poaching.
• Genetic diversity of the population can be
measured.
• Modern reproductive technology can increase the
chances of reproductive success.

10. • Animals and plants can be bred to
increase their numbers if endangered.
• Research in to reproductive physiology,
life style and ecology of an endangered
species.
• Conservation site can be used as
attraction to raise funds for further
conservation efforts.

11. Disadvantages of ex situ conservation:
• The organisms are living outside their
natural habitat.
• Nutrition issues may arise.
• Collect survival conditions may
difficult to achieve.
• Expensive to maintain.

12. Some common methods of ex situconservation include:
● Botanical gardens: Botanical gardens collect and conserve plants
from all over the world. They often have specialized facilities for
propagating and growing rare or endangered plants.
● Zoos: Zoos keep and breed animals in captivity. This allows them to
protect animals that are threatened in the wild and educate the public
about these animals and their conservation needs.
● Cryopreservation: Cryopreservation is the freezing of biological
materials at very low temperatures. This can be used to conserve
plants, animals, and even human cells.
● DNA banks: DNA banks store the genetic material of plants, animals,
and other organisms. This can be used to restore populations of these
organisms if they become extinct in the wild.

13. The California condor (Gymnogyps californianus) is a
case study of ex situ conservation. The condor is a large
bird of prey that was once widespread in western North
America. However, the condor was hunted and poisoned
for its feathers and body parts, and its habitat was
destroyed. By the 1980s, only 22 condors remained in the
wild.

14. A captive breeding program was established to save
the condor. The program was successful, and the
number of condors in captivity has grown to over
300. In 1992, the first condors were released back
into the wild. Today, there are over 500 condors in
the wild, and the species is considered to be
recovering.
The captive breeding program is an example of ex
situ conservation. It helped to save the California
condor from extinction by providing a safe place for
the birds to breed and grow. The program also
helped to educate the public about the condor and

15. THANK
YOU