The freshwater stingray have coloration, osteological and morphometric variations that could suggest the existence of more than one species in Colombia. In order to evaluate the phylogeography, population structure and genetic diversity for distributed in the Amazon and Orinoco basins, we amplified partial region of mitochondrial DNA () in 50 samples from eight different sub-basins. Our results suggest three phylogroups and a vicariance event occurred 43 million years ago proposing how diverged into the basins. A high population structure ( = 0.692; < 0.005) and a value of () of 3 were defined. A high genetic diversity within phylogroups was found: Phylogroup A ( = 0.64; π% = 2.48), Phylogroup B ( = 0.552; π% = 1.67), and Phylogroup C ( = 0.49; π% = 0.73). These results should be considered in local management plans, conservation programs and reclassification in at least Amazon and Orinoco.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1080/24701394.2020.1844679 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Focusing on microvascular function in heart failure with preserved ejection fraction.
Heart Fail Rev
January 2025
Department of Cardiology, Cardiology I, University Medical Center Mainz, Langenbeckstrasse 1, 55131, Mainz, Germany.
Heart failure is a prevalent global health issue. Heart failure with preserved ejection fraction (HFpEF), which already represents half of all heart cases worldwide, is projected to further increase, driven by aging populations and rising cardiovascular risk factors. Effective therapies for HFpEF remain limited, particularly due to its pathophysiological heterogeneity and incomplete understanding of underlying pathomechanisms and implications.
View Article and Find Full Text PDFThe structure and motivational significance of early beliefs about ability.
Dev Psychol
January 2025
Department of Psychology, New York University.
Adults hold a broad range of beliefs about intellectual ability. Key examples include beliefs about its malleability, its distribution in the population, whether high levels of it ("brilliance") are necessary for success, its origins, and its responsiveness to intervention. Here, we examined the structure and motivational significance of this network of consequential beliefs in a sample of elementary school-age children (5- to 11-year-olds, = 231; 116 girls, 112 boys, three gender nonbinary children; predominantly White and Asian children from relatively high-income backgrounds).
View Article and Find Full Text PDFUnlabelled: Quantitative understanding of mitochondrial heterogeneity is necessary for elucidating the precise role of these multifaceted organelles in tumor cell development. We demonstrate an early mechanistic role of mitochondria in initiating neoplasticity by performing quantitative analyses of structure-function of single mitochondrial components coupled with single cell transcriptomics. We demonstrate that the large Hyperfused-Mitochondrial-Networks (HMNs) of keratinocytes promptly get converted to the heterogenous Small-Mitochondrial-Networks (SMNs) as the stem cell enriching dose of the model carcinogen, TCDD, depolarizes mitochondria.
View Article and Find Full Text PDFInsulin degrading enzyme (IDE) is a dimeric 110 kDa M16A zinc metalloprotease that degrades amyloidogenic peptides diverse in shape and sequence, including insulin, amylin, and amyloid-β, to prevent toxic amyloid fibril formation. IDE has a hollow catalytic chamber formed by four homologous subdomains organized into two ∼55 kDa N- and C-domains (IDE-N and IDE-C, respectively), in which peptides bind, unfold, and are repositioned for proteolysis. IDE is known to transition between a closed state, poised for catalysis, and an open state, able to release cleavage products and bind new substrate.
View Article and Find Full Text PDFis a common, waterborne gastrointestinal parasite that causes diarrheal disease worldwide. Currently there are no effective therapeutics to treat cryptosporidiosis in at-risk populations. Since natural products are a known source of anti-parasitic compounds, we screened a library of extracts and pure natural product compounds isolated from bacteria and fungi collected from subterranean environments for activity against .
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!