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Temporal Variability in Effective Size ( [Formula] ) Identifies Potential Sources of Discrepancies Between Mark Recapture and Close Kin Mark Recapture Estimates of Population Abundance

Author(s): Ruzzante DE; McCracken GR; Fraser DJ; MacMillan J; Buhariwalla C; Flemming JM;

Although efforts to estimate effective population size, census size and their ratio in wild populations are expanding, few empirical studies investigate interannual changes in these parameters. Hence, we do not know how repeatable or representative many estimates may be. Answering this question requires studies of long-term population dynamics. Here we to ...

Article GUID: 39582254


Trends in nighttime insomnia symptoms in Canada from 2007 to 2021

Author(s): Chaput JP; Morin CM; Robillard R; Carney CE; Dang-Vu TT; Davidson JR; Tomkinson GR; Lang JJ;

Objective: National estimates and trends in insomnia symptoms in Canada are outdated. Updates are needed to inform the development of targeted prevention and intervention strategies. This study aimed to examine the prevalence and trends in nighttime insomnia symptoms among Canadians aged 12 years ...

Article GUID: 39556998


Development of SNP Panels from Low-Coverage Whole Genome Sequencing (lcWGS) to Support Indigenous Fisheries for Three Salmonid Species in Northern Canada

Author(s): Beemelmanns A; Bouchard R; Michaelides S; Normandeau E; Jeon HB; Chamlian B; Babin C; Hénault P; Perrot O; Harris LN; Zhu X; Fraser D; Bernatchez L; Moore JS;

Single nucleotide polymorphism (SNP) panels are powerful tools for assessing the genetic population structure and dispersal of fishes and can enhance management practices for commercial, recreational and subsistence mixed-stock fisheries. Arctic Char (Salvelinus alpinus), Brook Trout (Salvelinus ...

Article GUID: 39552382


When population growth intensifies intergroup competition, female colobus monkeys free-ride less

Author(s): Arseneau-Robar TJ; Teichroeb JA; Macintosh AJJ; Saj TL; Glotfelty E; Lucci S; Sicotte P; Wikberg EC;

Intergroup aggression often results in the production of public goods, such as a safe and stable social environment and a home range containing the resources required to survive and reproduce. We investigate temporal variation in intergroup aggression in a growing population of colobus monkeys (C ...

Article GUID: 38906888


Simultaneous automated ascertainment of prevalent vertebral fracture and abdominal aortic calcification in clinical practice: role in fracture risk assessment

Author(s): Schousboe JT; Lewis JR; Monchka BA; Reid SB; Davidson MJ; Kimelman D; Jozani MJ; Smith C; Sim M; Gilani SZ; Suter D; Leslie WD;

Whether simultaneous automated ascertainments of prevalent vertebral fracture (auto-PVFx) and abdominal aortic calcification (auto-AAC) on vertebral fracture assessment (VFA) lateral spine bone density (BMD) images jointly predict incident fractures in routine clinical practice is unclear. We est ...

Article GUID: 38699950


Global assessment of effective population sizes: Consistent taxonomic differences in meeting the 50/500 rule

Author(s): Clarke SH; Lawrence ER; Matte JM; Gallagher BK; Salisbury SJ; Michaelides SN; Koumrouyan R; Ruzzante DE; Grant JWA; Fraser DJ;

Effective population size (Ne) is a particularly useful metric for conservation as it affects genetic drift, inbreeding and adaptive potential within populations. Current guidelines recommend a minimum Ne of 50 and 500 to avoid short-term inbreeding and to preserve long-term adaptive potential re ...

Article GUID: 38613250


Recruitment dynamics of juvenile salmonids: Comparisons among populations and with classic case studies

Author(s): Matte JO; Fraser DJ; Grant JWA;

Understanding recruitment, the process by which individuals are added to a population or to a fishery, is critical for understanding population dynamics and facilitating sustainable fisheries management. Important variation in recruitment dynamics is observed among populations, wherein some populations exhibit asymptotic productivity and others exhibit ov ...

Article GUID: 38599588


Microgeographic variation in demography and thermal regimes stabilize regional abundance of a widespread freshwater fish

Author(s): Gallagher BK; Fraser DJ;

Predicting the persistence of species under climate change is an increasingly important objective in ecological research and management. However, biotic and abiotic heterogeneity can drive asynchrony in population responses at small spatial scales, complicating species-level assessments. For widely distributed species consisting of many fragmented populat ...

Article GUID: 38071739


Macrogenetics reveals multifaceted influences of environmental variation on vertebrate population genetic diversity across the Americas

Author(s): Lawrence ER; Pedersen EJ; Fraser DJ;

The broad scale distribution of population-specific genetic diversity (GDP ) across taxa remains understudied relative to species diversity gradients, despite its relevance for systematic conservation planning. We used nuclear DNA data collected from 3678 vertebrate populations across the Americas to assess the role of environmental and spatial variables ...

Article GUID: 37365672


Demographic resilience of brook trout populations subjected to experimental size-selective harvesting

Author(s): Clarke SH; McCracken GR; Humphries S; Ruzzante DE; Grant JWA; Fraser DJ;

Sustainable management of exploited populations benefits from integrating demographic and genetic considerations into assessments, as both play a role in determining harvest yields and population persistence. This is especially important in populations subject to size-selective harvest, because size selective harvesting has the potential to result in sign ...

Article GUID: 36426123


Population demography maintains biogeographic boundaries

Author(s): Schmidt C; Muñoz G; Lancaster LT; Lessard JP; Marske KA; Marshall KE; Garroway CJ;

Global biodiversity is organised into biogeographic regions that comprise distinct biotas. The contemporary factors maintaining differences in species composition between regions are poorly understood. Given evidence that populations with sufficient genetic variation can adapt to fill new habitats, it is surprising that more homogenisation of species asse ...

Article GUID: 35753949


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