Conservation genetic techniques and considerations of the evolutionary potential of a species are increasingly being applied to species conservation. For example, effective population size ( ) estimates are useful for determining the conservation status of species, yet accurate estimates of current remain difficult to obtain. The effective population size can contribute to setting federal delisting criteria, as was done for the southern sea otter (). After being hunted to near extinction during the North Pacific fur trade, the southern sea otter has recovered over part of its former range, but remains at relatively low numbers, making it desirable to obtain accurate and consistent estimates of . Although theoretical papers have compared the validity of several methods, comparisons of estimators using empirical data in applied conservation settings are limited. We combined thirteen years of demographic and genetic data from 1,006 sea otters to assess multiple estimators, as well as temporal trends in genetic diversity and population genetic structure. Genetic diversity was low and did not increase over time. There was no evidence for distinct genetic units, but some evidence for genetic isolation by distance. In particular, estimates of based on demographic data were much larger than genetic estimates when computed for the entire range of the population, but were similar at smaller spatial scales. The discrepancy between estimates at large spatial scales could be driven by cryptic population structure and/or individual differences in reproductive success. We recommend the development of new delisting criteria for the southern sea otter. We advise the use of multiple estimates of for other wide-ranging species, species with overlapping generations, or with sex-biased dispersal, as well as the development of improved metrics of genetic assessments of populations.
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http://dx.doi.org/10.1111/eva.12642 | DOI Listing |
Nefrologia (Engl Ed)
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Servicio de Nefrología, Hospital del Mar, Instituto Hospital del Mar de Investigaciones Médicas, RD16/0009/0013 (ISCIII FEDER REDinREN), Barcelona, Spain; Servicio de Nefrología, Hospital Universitario 12 de Octubre, Madrid, Spain.
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View Article and Find Full Text PDFChin J Traumatol
January 2025
Road Traffic Injury Research Center, Tabriz University of Medical Sciences, Tabriz, Iran. Electronic address:
Purpose: Attention-deficit/hyperactivity disorder (ADHD) increases the risk of road traffic injuries through various mechanisms including higher risky driving behaviors. Therefore, drivers with ADHD are shown to be more prone to road traffic injuries. This study was conducted in a community-based sample of drivers to determine how ADHD affects driving behavior components.
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Division of Nephrology, Department of Internal Medicine, National Cheng Kung University Hospital, College of Medicine, National Cheng-Kung University, Tainan, Taiwan; Institute of Clinical Medicine, College of Medicine, National Cheng Kung University, Tainan, Taiwan. Electronic address:
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Vita-Salute San Raffaele University and IRCCS San Raffaele Hospital, Milan, Italy; Department of Medical Oncology, IRCCS San Raffaele University, Milan, Italy.
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View Article and Find Full Text PDFAdv Clin Chem
January 2025
Department of Genetics, College of Basic Medical Sciences, Jilin University, Changchun, China. Electronic address:
Visceral adipose tissue, a type of abdominal adipose tissue, is highly involved in lipolysis. Because increased visceral adiposity is strongly associated with the metabolic complications related with obesity, such as type 2 diabetes and cardiovascular disease, there is a need for precise, targeted, personalized and site-specific measures clinically. Existing studies showed that ectopic fat accumulation may be characterized differently among different populations due to complex genetic architecture and non-genetic or epigenetic components, ie, Asians have more and Africans have less visceral fat vs Europeans.
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