A gaggle of researchers primarily based on the University of Sydney has uncovered patterns which may be jeopardising the long-term success of worldwide animal breeding applications, which more and more act as an insurance coverage in opposition to extinction in conservation, and for meals safety.
The meta-analysis, led by the University of Sydney’s Faculty of Science, discovered captive-born animals had, on common, nearly half the chances of reproductive success in comparison with their wild-born counterparts in captivity.
In aquaculture, the consequences have been notably pronounced, though analysis and conservation applications confirmed the identical development.
The research analysed greater than 100 outcomes, from 39 animal research of 44 various species together with shrimp, fish, mice, geese, lemurs and Tasmanian devils.
The paper, “A meta-analysis of birth-origin effects on reproduction in diverse captive environments”, is printed as we speak in Nature Communications.
Dr Catherine Grueber, who supervised the research, stated the crew was stunned at how common the patterns have been.
“More than 2,000 threatened species rely on successful reproduction through captive breeding programs for conservation alone,” stated Dr Grueber, from the University of Sydney’s School of Life and Environmental Sciences and San Diego Zoo Global.
“In order to maintain our food supply, it’s crucial we improve captive breeding; for example, the aquaculture industry is looking at introducing new species for commercialisation.”
Lead creator, PhD scholar Ms Kate Farquharson, stated the outcomes present alternatives for bettering the long-term success of animal breeding applications.
“Our dataset included measurements of lots of different reproductive traits – such as fertility, number of offspring, and timing of reproduction – but found that certain traits, such as offspring weight and mothering ability, seem to be the most strongly affected,” Ms Farquharson stated.
“This provides an opportunity for animal breeding programs, by identifying the areas where improvement could boost sustainability.”
Research supervisor on the University of Sydney’s Australasian Wildlife Genomics Group, co-author Dr Carolyn Hogg, stated the analysis could possibly be prolonged by endeavor multi-generational research.
“Identifying limitations as well as opportunities in captive breeding programs across all industries is an urgent priority,” Dr Hogg stated.
- The research lined animal breeding applications in aquaculture, conservation and analysis. It included invertebrates, fish, birds and mammals.
- Across the animal kingdom, captive-born animals have been discovered to common 42 % decreased odds of reproductive success, in contrast to those who are wild-born.
- Considerable analysis has explored variations between captive and wild populations; much less consideration has been given to discovering patterns throughout species.
- In conservation, captive breeding has been really useful by the International Union for the Conservation of Nature (IUCN) Red List assessors for 2199 species to cut back the specter of extinction.
Materials offered by University of Sydney. Note: Content could also be edited for type and size.