Reintroductions Flashcards
Translocation
Moving individuals from one
loca+on to another site that provides
protection.
why Translocate?
– When habitat or structure is destroyed - bats
– To reduce human/wildlife conflict – bears,
baboons
Reintroduc)on
release captive bred or wild collected individuals into an ecologically suitable site within their historic range where the species no longer occurs
Augmentation
release cap+ve-bred or wild-caught
individuals into an exis+ng popula+on to increase its
size and gene pool
Considera+ons with Establishing New
Popula+ons
Expense –
Are cap+ve-raised animals/plants of robust gene+c stock or have they lost
gene+c variability?
What are the chances that the new popula+on will be successful/viable?
What are the chances that the new popula+on will be successful/viable?
What do you need to know to answer this?
How many to release at a single loca+on?
– Are mul+ple release sites necessary?
– Should the sex ra+o and age structure of released popula+on be
balanced?
– Will the released individuals socialize and func+on normally?
– Will cap+ve-raised animals know where to forage, know where/how
to migrate? Eg. Whooping Cranes
Cap+ve Breeding for Animal Reintroduc+ons Challenges
High juvenile mortality – Loss of rare alleles and gene+c diversity – Reproduc+ve dysfunc+on – Inbreeding depression
Cap+ve Breeding for Animal Reintroduc+ons Solu+ons?
Detailed pedigree analysis and
gene+c management
– Animal behavior studies
Captive Breeding for Species Conservation
Bring all remaining individuals into cap+vity with or without reintroduc+on plan. May provide last-ditch effort to save species.
Ex-situ conserva+on benefits in-situ efforts
Increased knowledge for managing wild popula+ons Cap+ve recruits to reestablish wild popula+ons
Increased educa+onal
opportuni+es
How to Measure Success
• What are goals? How were they
determined?
Monitor popula+ons over +me to determine
if efforts have achieved goals.