Release of Captive-Reared or Translocated Endangered Birds: What Do We Need to Know?

Scott, James M.; Carpenter, James W.

doi:10.2307/4087562

Cited by 116 publications

(71 citation statements)

References 4 publications

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“…Conservationorientated translocations have historically been poorly planned and monitored (Armstrong & Seddon, 2008) as they were likely to be a last resort solution, and decision makers often did not have the time or training to predict possible outcomes or plan necessary management beforehand. Guidelines for reintroduction that were published by the IUCN (1998) and several papers in the late 1980s and 1990s emphasized the need for an increase in researchoriented planning and monitoring (Scott & Carpenter, 1987;Griffith et al, 1989). Although the situation improved, a recent review suggests that the success rate of translocations is still generally low, with many attempts having resulted in either failure or partial success (see Box 1; Seddon et al, 2007).…”

Section: Translocationsmentioning

confidence: 99%

Maximizing the success of assisted colonizations

Chauvenet

Ewen

Armstrong

et al. 2012

Animal Conservation

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Climate change is causing spatio-temporal shifts in environmental conditions, and species that are not able to track suitable environments may face increased risks of extinction. Assisted colonization, a form of translocation, has been proposed as a tool to help species survive the impacts of climate change. Unfortunately, translocations generally have a low success rate, a well-documented fact that is not considered in most of the recent literature on assisted colonization. One of the main impediments to translocation success is inadequate planning. In this review, we argue that by using well-known analytical tools such as species distribution models and population dynamics modelling we can maximize the success of assisted colonization. In particular, we present guidelines as to which questions should be investigated when planning assisted colonization and suggest methods for answering them. Finally, we also highlight further implementation and research issues that remain to be solved for assisted colonizations to be efficient climate change adaptation tools.

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Section: Translocationsmentioning

confidence: 99%

Maximizing the success of assisted colonizations

Chauvenet

Ewen

Armstrong

et al. 2012

Animal Conservation

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“…It is essential to determine the effectiveness of captive-rearing programs if effort is to be spent on them for the recovery of rare species. Assessing the post-release survival and reproductive parameters of captive-reared (hereafter captive) versus wild-reared (hereafter wild) individuals is an important measure of the effectiveness of captive-rearing programs (Scott & Carpenter 1987, Griffith et al 1989.…”

Section: Introductionmentioning

confidence: 99%

Success of captive-rearing for a threatened shorebird

Neuman¹,

Stenzel²,

Warriner³

et al. 2013

Endang. Species. Res.

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Captive-breeding and -rearing programs have been widely used for the conservation and recovery of imperiled species, and the success of such programs should be rigorously evaluated. In this study, we assessed the success of captive-rearing for a threatened shorebird, the snowy plover Charadrius nivosus, by comparing the survival and reproductive success of captivereared and wild-reared individuals on the central California coast from 2001 to 2010. We used mark-recapture analysis, implemented in the program MARK, to estimate apparent annual survival (ϕ) and encounter occasion detection probability (p) from capture and sighting data of marked plovers. We compared 3 measures of reproductive success (hatch rate, fledge rate and juveniles fledged per year) using stratified randomization tests based on individual breeding histories where captive-and wild-reared plovers were matched for age, sex and year. Captive-and wild-reared snowy plovers had similar apparent survival and reproductive rates and paired with mates of similar age in their first breeding year. The only exception was that captive males after their first breeding year had lower fledging rates than males from the overall population, but this did not affect the annual productivity rate. We conclude that releasing captive-reared individuals is a valuable part of ongoing efforts to restore the snowy plover population in California, and is also useful in cases where plover nests may need to be salvaged to protect them from oil contamination or other catastrophic events.KEY WORDS: Shorebird · Snowy plover · Captive-rearing · Survival · Reproduction 22: 85-94, 2013 Bart et al. 2007). Two plover species are listed under the United States Endangered Species Act, the piping plover Charadrius melodus and the snowy plover Charadrius nivosus; C. nivosus was formerly treated as a conspecific of C. alexandrinus (Chesser et al. 2011), but the World Conservation Union (IUCN 2012) has not yet accepted this change or designated status for C. nivosus. Both the piping and snowy plover have recovery plans recommending captive-rearing programs to support conservation efforts (USFWS 2003(USFWS , 2007. Plovers are ideal candidates for captiverearing programs because their offspring develop rapidly and have limited need of parental care. Resale or republication not permitted without written consent of the publisher FREE REE ACCESS CCESSEndang Species ResCaptive-rearing programs for plovers have largely been ancillary to in situ conservation management or used on an emergency basis. Captive-rearing methods developed with killdeer Charadrius vociferus chicks (Powell & Cuthbert 1993, Powell et al. 1997 were applied to the Great Lakes population of the piping plover, but a subsequent analysis of this program found that the captive plovers had significantly lower apparent survival rates and breeding success than wild plovers (Roche et al. 2008). Similarly, Goossen et al. (2011) reported significantly lower return rates for captive versus wild piping plovers in Saska...

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“…There is little information on the physiologic effects of translocation on birds. Scott and Carpenter (1987) recognized the paucity of objective data on avian translocation. This lack of knowledge assumes greater importance in endangered birds because the loss of each individual during translocation assumes greater proportional importance to the whole population.…”

Section: Introductionmentioning

confidence: 99%

Survival and Physiologic Response of Common Amakihi and Japanese White-Eyes during Simulated Translocation

Work

Massey²,

Johnson

et al. 1999

The Condor

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Abstract. We evaluated the effects of three translocation trials on Common Amakihi(Hemignathus virens) and Japanese White-eyes (Zosterops japonicus). Trial 1 involved capturing birds, transporting them on rough roads for 4 hr followed by holding in an aviary for 48 hr without overnight thermal support prior to release. Trial 2 involved capture, then holding in an aviary for 48 hr with overnight thermal support followed by transport for 4 hr prior to release. Trial 3 and I were identical except that overnight thermal support was provided during trial 3. We monitored survival, food consumption, weight change, and fecal production during captivity as well as changes in hematocrit, estimated total solids, heterophil to lymphocyte ratios, plasma uric acid, and creatinine phosphokinase (CPK) at capture and release. Survival was significantly lower for Amakihi during trial 1 (no thermal support). Birds that died lost significantly more weight than those that survived. Regardless of trial, birds responded to translocation by a combination of weight loss, anemia, hypoproteinemia, and elevated heterophil to lymphocyte ratio, uric acid, and CPK levels. The first 24 hr of captivity posed the greatest risk to birds regardless of whether transport or holding occurred first. Food consumption, fecal production, and weight all decreased at night, and overnight thermal support during holding was critical if ambient temperatures dipped to freezing. We recommend that if small passerines are to be held for > 12 hr, they be monitored individually for weight loss, food consumption, and fecal production.

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Release of Captive-Reared or Translocated Endangered Birds: What Do We Need to Know?

Cited by 116 publications

References 4 publications

Maximizing the success of assisted colonizations

Maximizing the success of assisted colonizations

Success of captive-rearing for a threatened shorebird

Survival and Physiologic Response of Common Amakihi and Japanese White-Eyes during Simulated Translocation

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