Using conservation genetics to prioritise management options for an endangered songbird

Heredity, Journal Year: 2023, Volume and Issue: 130(5), P. 289 - 301

Published: April 5, 2023

Genetic data can be highly informative for answering questions relevant to practical conservation efforts, but remain one of the most neglected aspects species recovery plans. Framing genetic with reference and tractable objectives help bypass this limitation application genetics in conservation. Using a single-nucleotide polymorphism dataset from reduced-representation sequencing (DArTSeq), we conducted assessment remnant populations endangered forty-spotted pardalote (Pardalotus quadragintus), songbird endemic Tasmania, Australia. Our were inform strategies diversity estimate effective population sizes patterns inter-population movement identify management units habitat restoration. We show structure two small on mainland Tasmania as 'satellites' larger Bruny Island connected by migration. relating Although our results do not indicate immediate need genetically manage populations, estimated some that they are vulnerable drift, highlighting urgent implement restoration increase size conduct monitoring. discuss how used interventions assessing contemporary aspects, valuable information planning decision-making produced guide actions account chances concern.

Language: Английский

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Community Bioacoustics: Studying Acoustic Community Structure for Ecological and Conservation Insights

Frontiers in Ecology and Evolution, Journal Year: 2021, Volume and Issue: 9

Published: July 30, 2021

The diversity of animal acoustic signals has evolved due to multiple ecological processes, both biotic and abiotic. At the level communities signaling animals, these processes may lead diverse outcomes, including partitioning along axes (divergent signal parameters, locations, timing). Acoustic data provides information on organization, dynamics an community, thus enables study change turnover in a non-intrusive way. In this review, we lay out how community bioacoustics (the structure dynamics), value monitoring conservation landscapes taxa. First, review concepts space, their effects communities. Next, highlight spatiotemporal is reflected structure, potential presents conservation. As passive gains popularity worldwide, propose that analytical framework promise studying response entire suites species (from insects large whales) rapid anthropogenic change.

Language: Английский

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LRM-MVSR: A lightweight birdsong recognition model based on multi-view feature extraction enhancement and spatial relationship capture

Expert Systems with Applications, Journal Year: 2025, Volume and Issue: unknown, P. 126735 - 126735

Published: Feb. 1, 2025

Language: Английский

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Bringing animal behaviour into marine conservation: insights and future directions

acta ethologica, Journal Year: 2025, Volume and Issue: unknown

Published: April 21, 2025

Language: Английский

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Machine learning and statistical classification of birdsong link vocal acoustic features with phylogeny

Scientific Reports, Journal Year: 2023, Volume and Issue: 13(1)

Published: May 1, 2023

Abstract Birdsong is a longstanding model system for studying evolution and biodiversity. Here, we collected analyzed high quality song recordings from seven species in the family Estrildidae . We measured acoustic features of syllables then used dimensionality reduction machine learning classifiers to identify that accurately assigned species. Species differences were captured by first 3 principal components, corresponding basic frequency, power distribution, spectrotemporal features. identified underlying classification accuracy. found fundamental mean spectral flatness, syllable duration most informative identification. Next, tested whether specific species’ songs predicted phylogenetic distance. significant signal frequency features, but not distribution or Results suggest are more constrained genetics than other best identifying recordings. The absence suggests these labile, reflecting processes individual recognition.

Language: Английский

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Yellow Cardinal (Gubernatrix cristata) males respond more strongly to local than to foreign dialects

Ibis, Journal Year: 2023, Volume and Issue: 165(4), P. 1318 - 1330

Published: March 20, 2023

Bird song is a culturally transmitted behavioural trait strongly tied to territory defence and mate attraction in oscine passerines. Divergent variations can appear different populations of the same species as consequence multiple factors generating geographically distinct songs also termed dialects. Most studies show that males react more towards local dialects, potentially by‐product evolutionary divergence between populations, although other hypotheses have been suggested. In addition, females are hypothesized stronger responses this may lead greater reproductive success. context, become prezygotic barrier for reproduction. The Yellow Cardinal Gubernatrix cristata an endangered South American thorny shrubland has suffered from population fragmentation due habitat destruction its capture illegal wildlife trade. Genetically groups sing their own dialect studied context conservation programme intends restore preserve natural by releasing individuals recovered pet market back into area origin. Although dialects identified, it remains unknown whether there vocal recognition populations. study, we performed playback experiments two found male Cardinals reacted dialect, foreign was still recognized. This information important not always possible genetically assign individual geographical origin before release, which could contribute secondary contact scenario where play critical role settlement

Language: Английский

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Conspecific attraction for conservation and management of terrestrial breeding birds: Current knowledge and future research directions

Ornithological Applications, Journal Year: 2021, Volume and Issue: 123(2)

Published: April 9, 2021

Abstract Conspecific presence can indicate the location or quality of resources, and animals settling near conspecifics often gain fitness benefits. This result in adaptive conspecific attraction during breeding habitat selection as demonstrated numerous terrestrial, territorial birds. There is growing interest using simulated social cues (e.g., decoys, broadcasted vocalizations) to manage bird distributions, yet it remains unclear when this approach likely succeed. We reviewed published studies evaluate whether strength terrestrial birds mediated by characteristics species (life history traits), timing duration), sites quality), how was measured. identified 31 experiments that compared settlement between treatment control sites. then used phylogenetically controlled meta-regression assess impacts 19 moderators on settlement. Nearly all included these were migratory passerines, generally had a strong, positive influence their decisions, odds site occupancy 3.12× (95% CI: 0.81–11.69) greater relative Within group, evolutionarily conserved with ≥25.5% 5.1%–65.4%) variance effects explained phylogenetic relatedness. However, we found no evidence any covariates influenced response cues, posit stems from limited research specifically designed identify mechanisms mediating attraction. therefore developed agenda provides framework for testing mechanistic hypotheses regarding cue characteristics, traits, spatial contexts may mediate conspecifics. Evaluating will greatly advance field helping managers understand when, where, why simulating be enhance populations are conservation concern.

Language: Английский

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Textured species range maps enhance interdisciplinary science capacity across scales

Frontiers in Ecology and the Environment, Journal Year: 2022, Volume and Issue: 20(5), P. 319 - 326

Published: March 22, 2022

Range maps are critical for understanding and conserving biodiversity, but current range often omit important context, negating the dynamism variation of populations, environmental conditions, ecological attributes to functionally oversimplify biogeography theory. Moreover, gross underrepresentation spatial heterogeneity throughout a species distribution limits utility in decision making community engagement, weakening applications disciplines outside natural sciences. As climate change other anthropogenic factors outpace our their impacts, robust informative will be anticipating how changes affect coupled ecological, evolutionary, social processes. Here, we highlight expansion “flat” by adding “texture”, which can represent myriad conditions that spatially explicit across range. Using examples variations (in human pressures, presence competitor species, extent Indigenous lands) as texture, demonstrate address broader questions promote enhanced capacity interdisciplinary research.

Language: Английский

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Like Father Like Son: Cultural and Genetic Contributions to Song Inheritance in an Estrildid Finch

Frontiers in Psychology, Journal Year: 2021, Volume and Issue: 12

Published: June 4, 2021

Social learning of vocalizations is integral to song inheritance in oscine passerines. However, other factors, such as genetic and the developmental environment, can also influence phenotype. The relative contributions these factors have a strong on evolution may affect important evolutionary processes speciation. are well-described only for few species likely vary with taxonomy. Using archived data, we examined patterns domestic population Java sparrows ( Lonchura oryzivora ), some which had been cross-fostered. Six-hundred seventy-six songs from 73 birds were segmented classified into notes note subtypes N = 22,972), range acoustic features measured. Overall, found evidence cultural structure characteristics notes; sons’ syntax composition similar that their social fathers not influenced by relatedness. For vocal consistency subtypes, measure performance, there was no apparent or inheritance, but both age environment consistency. These findings suggest high fidelity material, i.e., characteristics, could allow novel variants be preserved accumulate over generations, implications conservation. differences performance do show links instead potentially serving condition dependent signals.

Language: Английский

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Acoustic censusing and individual identification of birds in the wild

bioRxiv (Cold Spring Harbor Laboratory), Journal Year: 2021, Volume and Issue: unknown

Published: Oct. 31, 2021

Avian vocal individuality carries information that can be utilized as an alternative to physical tagging of individuals. However, it is rarely used in conservation tasks despite rapidly-expanding use passive acoustic monitoring techniques. Reliable individual recognizers and accurate quantifiers population size remain elusive, which discourages the for monitoring, wildlife management, ecological research. We propose a neuro-fuzzy framework allows discrimination individuals by their calls, discovery unexpected set recordings, estimation using solely sound. Our method, tested data collected wild, rapid identification even censusing without prior from recorded achieve this integrating fuzzy classification clustering methodology (LAMDA) into Convolutional Deep Clustering Neural Network (CDCN). approach will benefit conservation, paves way towards robust species whose handling time-consuming, culturally or ethically problematic, logistically difficult.

Language: Английский

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