A. Robin results 617
· Newest (Page 1/25, per page 25)
Author: A. Robin ×Clear All Filters
Search Results
Jaguar Range‐Wide Connectivity: Prioritising Core Areas and Corridors Between and Within Protected Areas and Indigenous LandsNARA Subscribed
Anthropogenic habitat transformation has led to population declines and increasing isolation of populations of many species, particularly top predators, where small and fragmented populations often experience limited dispersal and reduced genetic diversity. Jaguars ( Panthera onca ), for example, have lost half of their historical range and most populations outside the Amazon biome are small, isolated and highly threatened. He...
Diet-dependent, beneficial and adverse effects of rapamycin on life span of Drosophila melanogasterNARA Subscribed
Rapamycin supplementation has been reported to extend life spans in numerous species, including Drosophila melanogaster , but a recent study in this laboratory revealed a marked life-shortening effect in y w male flies. The experiments reported here were performed to characterize conditions under which rapamycin could extend or shorten life spans in five fly strains. On a cornmeal/torula yeast-based medium, rapamycin extended...
Understanding cachexia and muscle dysfunction in the context of metastatic breast cancerNARA Subscribed
Cancer cachexia significantly impacts the quality of life of cancer patients, predicting therapy response and survival. Cachexia prevalence and severity increases over the course of disease progression, affecting up to 80% of patients with metastatic cancer. Despite this, cachexia is relatively understudied in the context of metastatic breast cancer, despite it affecting a significant proportion of patients with this common ca...
Littoral habitat structure influences freshwater crayfish populations in five volcanic lakes of Aotearoa New ZealandNARA Subscribed
Freshwater crayfish are increasingly threatened by habitat degradation, declining water quality, and invasive species. In Aotearoa New Zealand, lake populations of the endemic northern freshwater crayfish Paranephrops planifrons (kōura) have declined by up to 91%. Identifying key habitat requirements is essential to improve the conservation of crayfish facing multiple threats. To assess littoral habitat associations, we survey...
Marine mammals navigate their environment both horizontally and vertically, adding an additional layer of complexity to understanding their behavior and developing effective conservation strategies. Here, we use data from 14 tagged common bottlenose dolphins ( Tursiops truncatus ) from Hawai'i to explore how their diving behavior varies in response to temporal and demographic variables. Overall mean dive depth (for dives ≥ 50...
Dental topography is a powerful tool for investigating the relationship between diet and tooth shape in mammals. Here, we test whether dental topographic metrics (DTMs) can accurately predict diet in marsupials based on 81 lower molars from 43 extant species in 12 families (six of the seven extant orders), and compare them to DTMs of primates with similar diets. DTMs tested included Dirichlet normal energy (DNE) and variants (...
Potential for Manganese Oxide Driven Anaerobic Methane Oxidation in Sediments of a Seasonally Euxinic Coastal BasinNARA Subscribed
Methane (CH 4 ) is a strong greenhouse gas that, in marine sediments, is produced via methanogenesis and removed via oxidation with electron acceptors such as oxygen, sulfate and metal oxides . This study assesses the potential for manganese driven anaerobic oxidation of methane (Mn-AOM) in rapidly accumulating sediments in a seasonally euxinic coastal marine basin (Scharendijke basin, Lake Grevelingen, the Netherlands). Geoch...
Lag in Effective Population Size Decline Amid Demographic Collapse: A Case Study of the Delta Smelt ( Hypomesus transpacificus )NARA Subscribed
Effective population size ( N e ), census size ( N c ) and their ratio ( N e / N c ) are widely used indicators in conservation genetics, yet long‐term empirical data tracking of all three metrics over long time scales in wild populations remains rare. Using monitoring data from 1995 to 2020, we examined temporal dynamics of N e , N c and their relationship during the demographic collapse of Delta Smelt ( Hypomesus transpacifi...
Interpretable deep learning reveals spatiotemporal MRI features of brain aging that align with neurodegenerationNARA Subscribed
Cortical thinning and atrophy are hallmarks of brain aging that have been characterized using magnetic resonance imaging (MRI). Brain aging involves many neuroanatomic features whose effects on brain structure remain unexplored. To address this challenge, we trained interpretable deep neural networks (DNNs) to estimate brain age (BA) from T 1 -weighted ( T 1 w) MRI. By identifying MRI features unapparent to humans, DNNs can fi...
Community science is a powerful tool to understand biodiversity and species richness globally and in urban settings. Community science initiatives deployed as smartphone apps such as iNaturalist are increasingly used by both members of the public and scientists. Previous research shows that socioeconomic factors affect biodiversity patterns and that people of varying ages, racial, and ethnic backgrounds use smartphone applicat...