Problems with Captive Breeding

Problems with Captive Breeding - Problems with Captive...

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Problems with Captive Breeding Its difficult---we do not kn ow what puts animals "in the mood" to breed Breeding some species is easy---we want to make sure they don't do it too often Certain breeds are very finicky: the giant panda, the macaw parrot Even a female in heat rarely elicits a response from a captive male panda. The reason for this remains unclear, but studies have shown that giant pandas breed most successfully when they've had direct physical contact with keepers, as well as access to climbable trees and private areas away from public scrutiny. ----------------------------------------------------------------------------- --- Related in Slate Think giant pandas are cute and cuddly? David Plotz thinks they're boring. Read his obit for the panda Hsing-Hsing here.For other animals, missing social cues can cause problems. For many years, zookeepers had trouble breeding the white rhinoceros. Though they were often exhibited in male-female pairs, the animals rarely reproduced. In the wild, the white rhino lives in small herds; it turns out that a male needs to interact with a number of females in order to be properly aroused. Much of the difficulty breeding white rhinos disappeared as zoos began to keep them in larger groups. The primary goal of captive breeding, also known as ex situ conservation, is to develop a self-sustaining or increasing population of an endangered species in captivity, without the need to capture additional individuals from the wild. Any surplus captive-bred individuals are available to support a program of release into the wild. Another goal of captive breeding programs is to maintain an appropriate level of genetic diversity, which can allow the population be adaptable to conditions in the environment after release. Genetic diversity refers to the numerous alleles of genes in a population captive-bred individuals are offspring of the same parents, then the population is likely to have low genetic diversity because of the effects of inbreeding This can also lead to a phenomenon known as inbreeding depression, a detrimental effect on offspring that can result from mating between close relatives.
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Inbreeding depression is due to an accumulation of deleterious recessive alleles, which can become expressed in a high frequency in inbred populations. Inbreeding depression can be manifested as lowered fecundity, smaller numbers of offspring produced, and decreased survival after birth hard to introduce certain species back into the enviroment, such as mirgrtory birds and other highly mobile species(fish) small populations=inbreeding because of small geneb pools which cause the population to have poor immunities to disease among other problems. as generations continue, inbred populations can regain "normal" genetic diversity if further dna separtion is sought out The breeding of endangered species is coordinated by cooperative breeding programmes containing international studbooks and coordinators, who evaluate the roles of individual animals and institutions from a global or regional
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This note was uploaded on 03/09/2010 for the course MARB 1000 taught by Professor Hayes during the Spring '07 term at Texas A&M University-Galveston.

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Problems with Captive Breeding - Problems with Captive...

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