Spatial genetic architecture of the critically-endangered Maui Parrotbill (Pseudonestor xanthophrys): management considerations for reintroduction strategies

Mounce, Hanna L.; Raisin, Claire; Leonard, David L.; Wickenden, Hannah; Swinnerton, Kirsty J.; Groombridge, Jim J.

doi:10.1007/s10592-014-0641-9

Cited by 7 publications

(12 citation statements)

References 60 publications

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“…The variables with the most uncertainty included initial population size and annual habitat loss as predicted through climate change models. However, our sensitivity analysis identified female mortality at all ages as the parameter most responsible for driving the observed population changes, with juvenile survivorship and fecundity playing a lesser role; yet (with the exception of juvenile survivorship), these are all parameter estimates that we have high confidence in from empirical studies (e.g., Mounce et al 2015). Our model predictions contrast with the estimated population estimates based on point counts over the past 20 y (Camp et al 2009).…”

Section: Discussionmentioning

confidence: 89%

“…(-) indicates not applicable. Input parameters were derived from Mounce et al (2013Mounce et al ( , 2014Mounce et al ( , 2015, Warren et al (2015). ers could implement given existing resources and capabilities in attempts to recover the wild population.…”

Section: Discussionmentioning

confidence: 99%

“…Maui parrotbill Pseudonestor xanthophrys population trajectories for the proposed future reintroduced leeward population (Nakula Natural Area Reserve) based on a realistic proposed reintroduction scenario (scenario iv, wherein the captive flock sources 1 female/y and additional translocations from wild populations [Hanawi Natural Area Reserve and The Nature Conservancy's Waikamoi Preserve]). Model input parameters were derived from Mounce et al (2013Mounce et al ( , 2014Mounce et al ( , 2015, Warren et al (2015), Panel A demonstrates a population trajectory predicting trends in the reintroduced population with annual fecundity, female survivorship, and young of the year set as in Mounce et al (2013Mounce et al ( , 2014A). The other panels demonstrate trajectories for the same population with parameters increased by 5% (B), 10% (C), 15% (D) and 20% (E) based on potential benefits of the leeward mesic habitat.…”

Section: Discussionmentioning

confidence: 99%

“…We parameterized our base model using estimates of Maui parrotbill vital rates from Mounce et al (2013Mounce et al ( , 2014Mounce et al ( , 2015 Table 1). We designed this base model to represent the Maui parrotbill population in its current state without incorporation of any change in threats (besides normal demographic and stochastic effects of small population size), and thus produce simulations of a probable population trajectory without additional management actions.…”

Section: Base Modelsmentioning

confidence: 99%

“…For some parameters where the source data did not include an estimate of variance, we used a coefficient of variation of 15%, an accepted practice in PVA models when no estimate of variance is available (Morris and Doak 2002). In our model we also included an estimate of carrying capacity, whereby if a specified abundance threshold Mounce et al (2013Mounce et al ( , 2014Mounce et al ( , 2015, Warren et al (2015) , and pair home-range size from Warren et al (2015), 0.118 km 2 . This approximates the number of pairs (females) given total saturation in the entire range.…”

Section: Base Modelsmentioning

confidence: 99%

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Extinction Risk and Conservation Options for Maui Parrotbill, an Endangered Hawaiian Honeycreeper

Mounce

Warren

McGowan

et al. 2018

Journal of Fish and Wildlife Management

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Extinction rates for island birds around the world have been historically high. For forest passerines, the Hawaiian archipelago has suffered some of the highest extinction rates and reintroduction is a conservation tool that can be used to prevent the extinction of some of the remaining endangered species. Population viability analyses can be used to assess risks to vulnerable populations and evaluate the relative benefits of conservation strategies. Here we present a population viability analysis to assess the long-term viability for Maui parrotbill (Kiwikiu) Pseudonestor xanthophrys, a federally endangered passerine on the Hawaiian island of Maui. Contrary to indications from population monitoring, our results indicate Maui parrotbills may be unlikely to persist beyond 25 y. Our modeling suggests female mortality as a primary factor driving this decline. To evaluate and compare management options involving captive-rearing and translocation strategies we made a female-only stage-structured, meta-population simulation model. Maui parrotbills have low reproductive potential in captivity; therefore, the number of individuals (~20% of the global population) needed to source a reintroduction solely from captive reared birds is unrealistic. A reintroduction strategy that incorporates a minimal contribution from captivity and instead translocates mostly wild individuals was found to be the most feasible management option. Habitat is being restored on leeward east Maui, which may provide more favorable climate and habitat conditions and promote increased reproductive output. Our model provides managers with benchmarks for fecundity and survival needed to ensure reintroduction success, and highlights the importance of establishing a new population in potentially favorable habitat to ensure long-term persistence.

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Section: Discussionmentioning

confidence: 89%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Base Modelsmentioning

confidence: 99%

Section: Base Modelsmentioning

confidence: 99%

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Extinction Risk and Conservation Options for Maui Parrotbill, an Endangered Hawaiian Honeycreeper

Mounce

Warren

McGowan

et al. 2018

Journal of Fish and Wildlife Management

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Genetic guidelines for captive breeding and reintroductions of the endangered Black‐fronted Piping Guan, Aburria jacutinga (galliformes, cracidae), an Atlantic Forest endemic

et al. 2016

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The survival of a number of birds rely on captive breeding and reintroduction into the wild, but captive populations are often small and can be exposed to the negative effects of inbreeding and genetic drift. Then, managers are concerned not only with producing as much offspring as possible, but also with the retention of the maximum genetic variability within and between populations. The Black-fronted Piping Guan, Aburria jacutinga, is an endangered cracid endemic to the Atlantic Forest of southeastern South America. Because of its conservation status and functional importance, a captive breeding program started independently, mainly in three aviaries, in the decade of 1980. Although they have supplied animals for reintroductions, genetic variability aspects have never been considered. Here we addressed levels of genetic variability within and between these aviaries. Bayesian clustering analyses revealed two lineages. Inbreeding was not detected, although we found evidences for a recent bottleneck in one of the aviaries. Then, our main management recommendations are: i) reintroducing the species in areas where it has been extinct is more prudent than supplementing natural populations, as it could involve risks of disrupting local adaptive complexes; ii) as far as inbreeding can be avoided, the captive groups should be managed separately to minimize adaptation to captivity; iii) crossbreedings in pre-release generations could improve reintroduction success; and iv) a studbook should be implemented. As populations of Black-fronted Piping Guan from conservation units are progressively declining, these captive genetic repositories may gain importance in a near future. Zoo Biol. 35:313-318, 2016. © 2016 Wiley Periodicals, Inc.

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The Contribution of Genomics to Bird Conservation

Cassin-Sackett

Welch

Venkatraman

et al. 2019

Avian Genomics in Ecology and Evolution

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Spatial genetic architecture of the critically-endangered Maui Parrotbill (Pseudonestor xanthophrys): management considerations for reintroduction strategies

Cited by 7 publications

References 60 publications

Extinction Risk and Conservation Options for Maui Parrotbill, an Endangered Hawaiian Honeycreeper

Extinction Risk and Conservation Options for Maui Parrotbill, an Endangered Hawaiian Honeycreeper

Genetic guidelines for captive breeding and reintroductions of the endangered Black‐fronted Piping Guan, Aburria jacutinga (galliformes, cracidae), an Atlantic Forest endemic

The Contribution of Genomics to Bird Conservation

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