L4: Ex-situ Conservation Zoos and Aquaria Flashcards
What are two approaches to conservation?
-In-situ
-Ex-situ
What does in-situ mean?
Inside site
What does ex-situ mean?
Outside site
What are examples of in-situ conservation?
-Protected areas
-MTA’s
-Forestry
-Agricultural Land
What are examples of ex-situ conservation?
-Zoos
-Aquaria
-Botanic gardens
-Gene/seed banks
What should a modern zoo consist of?
-Accredited (AZA)
-Qualified staff
-Focus on animal welfare
-Conservation
-Not for profit
What arguments are there against zoos?
-Ethics
-Expensive
-Hard to preserve genetic variability
-Zoo populations may show genetic adaptation to artificial environment
-Zoo populations may not learn behaviours needed for survival in the wild
-Entire captive populations may be lost due to closure of institute or catastrophic event
What are arguments for zoos?
-Reduce the need to collect individuals from the wild
-Support research on basic biology of species
-Control over breeding to prevent inbreeding
-Supporting specific life-stages by increasing survival or reproduction
-Contribute to reintroduction or augmentation of wild populations
-Educational and public awareness programs
What are examples of species that were extinct in the wild but were kept alive in captive populations?
-Pere David’s Deer (Elaphurus davidianus)
-Franklin tree (Franklinia alatamaha)
-Przewalski’s Horse (Equus caballus przewalski)
Why was Californian Condor populations declining?
-Declined in 1970s
-Habitat loss
-Illegal hunting pesticide
-Lead poisoning
What did the San Diego Zoo do in 1987?
Captured all remaining Californian Conders for a controversial captive breeding program.
When was the reintroduction programme for Californian conder?
1988
What were the results of the Californian conder breeding programme?
-Costs $2 million per year
-561 conders in total, 347 in the wild and 214 in the captivity (US Fish and Wildlife Service)
-Full lead ammo ban in 2019 - a full recovery of the population expected
How many animals are maintained in zoos worldwide?
More than 3000 species of mammals. bird, reptiles and amphibians
What does ISIS stand for? (ZOOS)
International Species Inventory System
-Now called Species 360
How many species are in the Species 360?
Provides information on more than 22,000 species at around 1000 zoos and aquaria in 40 countries
What is artificial incubation?
-Offspring of captive animals may be cared for by humans during early life
-Encourage production of more young
-If mother does not care for young or if young are vulnerable to predators or disease
-Successful with sea turtles, birds, fishes and amphibians
-Eggs are collected and placed in ideal hatching conditions
-Hatchlings are protected and fed during their early stages and be released into the wild or raised in captivity
What is cross-fostering?
-If animal mother cannot raise its young, foster parents from another species can sometimes raise the offspring
-Endangered Wolf Centre 2018
-Critically endangered Mexican wolf pups born in captivity were fostered out to two wild packs
What is another example of animal cross fostering?
-Barbary lion reared with help from domestic dog
-only 90 individuals in captivity, extinct in the wild
-First Barbary lion born in captivity in Belfast zoo in 2007
-Cub rejected and reared by zookeeper
-Cub introduced to Keepa, a Japanese Akita dog to ensure it learned animal behaviour
Was the fostering of the Barbary lion successful?
-Cub was moved to Czech zoo in 2009
-Mated with Simon the lion
-Twin cubs born in 2010, 2012 and 2013
Single cub born in 2018
Describe artificial insemination
-Animals in captivity often lose interest in mating
-Zoos have small populations
-Artificial insemination may be needed to successfully breed
-Techniques must be tailored to species of interest
Describe embryo transfer.
-Females are given hormone treatment to super-ovulate
-Eggs collected and fertilised with fresh or frozen sperm
-Surgically implanted into mother or surrogate mothers of same or related species
-Successful in rare species such as bongo, gaur, Przewalski’s horse
-Frozen embryos can also be transferred
What does ACRES stand for?
Audubon Centre for Research of Endangered Species
What is ACRES?
-Frozen zoo
-Contains skin cells, sperm, eggs and embryos of 500 animals
-75 species
-Preserves genetic diversity of species
-Stored at -225 degrees with Liquid Nitrogen
