NDLI: Population history and genetic bottlenecks in translocated Cook Strait giant weta, Deinacrida rugosa: recommendations for future conservation management

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Population history and genetic bottlenecks in translocated Cook Strait giant weta, Deinacrida rugosa: recommendations for future conservation management

Content Provider	Springer Nature Link
Author	White, Daniel J. Watts, Corinne Allwood, Julia Prada, Diana Stringer, Ian Thornburrow, Danny Buckley, Thomas R.
Copyright Year	2016
Abstract	Translocating populations of endangered animals to predator-free offshore islands is an extreme, and potentially risky, conservation management strategy. There are many examples of failures and successes, however relatively little work has been done to formally quantify the required numbers of translocated individuals to increase the chance of successful establishment. Cook Strait giant weta, Deinacrida rugosa Buller 1870 (Orthoptera: Anostostomatidae), of New Zealand are an example of an at-risk species where extreme conservation measures are needed, due to their ground-dwelling lifestyle making them particularly prone to habitat loss and predation by alien species following human settlement. Here, we have used microsatellite markers to characterise genetic diversity within and between two parental populations (Mana and Stephens Islands), and two translocated populations (Maud and Matiu/Somes Islands), and estimate probabilities of genetic bottlenecks. We have modelled various demographic scenarios to quantify the severity of effective population size fluctuations resulting from translocations using DIYABC, and explored the number of founders needed to retain rare alleles using ALLELERETAIN. Our results suggest that populations have expanded on both Maud Island and Matiu/Somes Island from effective population sizes at time of translocation of 36 and 47 respectively, but provide evidence for a genetic bottleneck on Maud Island. We also show that translocations have had minimal impact on parental effective population sizes. The impact of our results on future conservation management efforts is discussed.
Starting Page	411
Ending Page	422
Page Count	12
File Format	PDF
ISSN	15660621
Journal	Conservation Genetics
Volume Number	18
Issue Number	2
e-ISSN	15729737
Language	English
Publisher	Springer Netherlands
Publisher Date	2016-11-28
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Cook Strait giant weta Demographic history Translocation Bottleneck Genetic diversity Conservation management Conservation Biology/Ecology Ecology Biodiversity Evolutionary Biology Plant Genetics & Genomics Animal Genetics and Genomics
Content Type	Text
Resource Type	Article
Subject	Genetics Ecology, Evolution, Behavior and Systematics

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Movements, behaviour and survival of adult Cook Strait giant weta (Deinacrida rugosa; Anostostomatidae: Orthoptera) immediately after translocation as revealed by radiotracking

Population expansion by Cook Strait giant wētā, Deinacrida rugosa (Orthoptera: Anostostomatidae), following translocation to Matiu/Somes Island, New Zealand, and subsequent changes in abundance

Ecological observations of Cook Strait giant wētā, Deinacrida rugosa (Orthoptera: Anostostomatidae), on Matiu/Somes Island

Where have all the weta gone? Results after two decades of transferring a threatened New Zealand giant weta, Deinacrida mahoenui

Food of Cook Strait giant wētā, Deinacrida rugosa on Matiu/Somes Island: do plant nutrient levels influence wētā distribution?

Conservation of genetic diversity in slippery elm (Ulmus rubra) in Wisconsin despite the devastating impact of Dutch elm disease

Effects of founder events on the genetic variation of translocated island populations: implications for conservation management of the northern quoll

Intraspecific Genetic Diversity: Monitoring, Conservation, and Management

Conservation genetics and genetic mating system of the yellow-shouldered blackbird (Agelaius xanthomus), an endangered island endemic

Population history and genetic bottlenecks in translocated Cook Strait giant weta, Deinacrida rugosa: recommendations for future conservation management

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Movements, behaviour and survival of adult Cook Strait giant weta (Deinacrida rugosa; Anostostomatidae: Orthoptera) immediately after translocation as revealed by radiotracking

Population expansion by Cook Strait giant wētā, Deinacrida rugosa (Orthoptera: Anostostomatidae), following translocation to Matiu/Somes Island, New Zealand, and subsequent changes in abundance

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