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177 results for “native diversity”
Data from: Analysis of genotyping data reveals the unique genetic diversity represented by the breeds of sheep native to the United Kingdom
<p><strong>Background: </strong>Sheep breeds native to the United Kingdom are noted for high breed variability and exhibit a striking diversity of different traits in phenotypes and genetic diversity. Some of these traits are highly sustainable, such as seasonal wool shedding in the Wiltshire Horn, are likely to become more important as pressures on sheep production increase in coming decades. Despite their clear importance to the future of sheep farming, the genetic diversity of native UK sheep breeds is poorly characterised. This increases the risk of losing the ability to select for breed-specific traits from native breeds that might be important to the UK sheep sector in the future. Here, we use 50K genotyping to perform preliminary analysis of breed relationships and genetic diversity within native UK sheep breeds, as a first step towards a comprehensive characterisation. This study generates novel data for thirteen native UK breeds, including 6 on the UK Breeds at Risk (BAR) list, and utilises existing data from the publicly available Sheep HapMap dataset to investigate population structure, heterozygosity and admixture.</p> <p><strong>Results: </strong>In this study the commercial breeds exhibited high levels of admixture, weaker population structure and had higher heterozygosity compared to the other native breeds, which generally tend to be more distinct, less admixed, and have lower genetic diversity and higher kinship coefficients. Some breeds including the Wiltshire Horn, Lincoln Longwool and Ryeland showed very little admixture at all, indicating a high level of breed integrity but potentially low genetic diversity. Population structure and admixture were strongly influenced by sample size and sample provenance – highlighting the need for equal sample sizes, sufficient numbers of individuals per breed, and sampling across multiple flocks. The genetic profiles both within and between breeds were highly complex for UK sheep, reflecting the complexity in the demographic history of these breeds.</p> <p><strong>Conclusion: </strong>Our results highlight the utility of genotyping data for investigating breed diversity and genetic structure. They also suggest that routine generation of genotyping data would be very useful in informing conservation strategies for rare and declining breeds with small populations sizes. We conclude that generating genetic resources for the sheep breeds that are native to the UK will help preserve the considerable genetic diversity represented by these breeds, and safe guard this diversity as a valuable resource for the UK sheep sector to utilise in the face of future challenges.</p>
Fig. 1 in Gastrointestinal parasite diversity of South American camelids (Artiodactyla: Camelidae): First review throughout the native range of distribution
Fig. 1. PRISMA flowchart of the systematic review process.
Spatial distribution and its limiting environmental factors of native orchid species diversity in the Beipan River Basin of Guizhou Province, China
<p>Understanding the distribution of biodiversity and its determinants, particularly that of ecologically sensitive ones, has long been intriguing to the science community and will help formulate conservation strategies under future climate changes. To this end, we conducted extensive field surveys on the distribution of orchid flora in the Beipan River Basin in Guizhou Province, which is one of the biodiversity conservation priorities in China. The data we acquired, together with those published previously, were converted into orchid species richness for each of the 3km × 3km grid cells covering the study region. Redundancy analysis (RDA) and Geographically Weighted Regression (GWR) were then applied to determine which of the 30 environmental factors are potentially critical for the spatial distribution of orchid flora we have observed. Despite a moderate spatial extent, we found that the Beipan River Basin harbors about 249 native orchid species belonging to 74 genera, equivalent to 14.5% of orchid flora of China. Orchid species richness in this area follows a descending gradient from the southeast to the northwest, 70.41% of its variation among grid cells can be explained by environmental factors and spatial variables, and spatial variables accounted for 63.90% of the spatial variation of orchid distribution, indicating that spatial variables played a dominant role in the distribution of wild orchidaceae species richness. In addition, the main environmental driver is the mean temperature of the wettest quarter. Our study provides a good example for revealing the main drivers of orchid distribution characteristics, and has a certain reference value for the development of orchid conservation strategies.</p>
Fig. 50 in The non-native freshwater fishes of Hong Kong: diversity, distributions, and origins
Fig. 50. Micropterus salmoides, Lam Tei Irrigation Reservoir.
Fig. 60 in The non-native freshwater fishes of Hong Kong: diversity, distributions, and origins
Fig. 60. Mugilogobius myxodermus, Plover Cove Reservoir.
Fig. 58. Glossogobius olivaceus, 65 in The non-native freshwater fishes of Hong Kong: diversity, distributions, and origins
Fig. 58. Glossogobius olivaceus, 65 mm SL, Plover Cove Reservoir.
Fig. 56. Hemiculter leucisculus, 120.2 in The non-native freshwater fishes of Hong Kong: diversity, distributions, and origins
Fig. 56. Hemiculter leucisculus, 120.2 mm SL, Tai Lam Chung Reservoir.
Fig. 42. Aplocheilus lineatus, 54.5 in The non-native freshwater fishes of Hong Kong: diversity, distributions, and origins
Fig. 42. Aplocheilus lineatus, 54.5 mm SL, Deep Water Bay Stream.
Fig. 40 in The non-native freshwater fishes of Hong Kong: diversity, distributions, and origins
Fig. 40. Vieja melanurus, Lai King area.
Fig. 41 in The non-native freshwater fishes of Hong Kong: diversity, distributions, and origins
Fig. 41. Melanotaenia trifasciata, Black Hill.
Fig. 54 in The non-native freshwater fishes of Hong Kong: diversity, distributions, and origins
Fig. 54. Distribution of the six most widespread non-native freshwater fish species in Hong Kong.
Fig. 57. Tanichthys albonubes, 29.5 in The non-native freshwater fishes of Hong Kong: diversity, distributions, and origins
Fig. 57. Tanichthys albonubes, 29.5 mm SL, trade material.
Fig. 55. Osteochilus salsburyi, 109 in The non-native freshwater fishes of Hong Kong: diversity, distributions, and origins
Fig. 55. Osteochilus salsburyi, 109 mm SL, Lower Aberdeen Reservoir.
Fig. 39. Vieja fenestrata, 103.6 in The non-native freshwater fishes of Hong Kong: diversity, distributions, and origins
Fig. 39. Vieja fenestrata, 103.6 mm SL, Hok Tau Reservoir.
Fig. 37. Parachromis managuensis, 35.1 in The non-native freshwater fishes of Hong Kong: diversity, distributions, and origins
Fig. 37. Parachromis managuensis, 35.1 mm SL, Plover Cove Reservoir.
Fig. 38. Vieja bifasciata, 103.6 in The non-native freshwater fishes of Hong Kong: diversity, distributions, and origins
Fig. 38. Vieja bifasciata, 103.6 mm SL, Tai Tam Tuk Reservoir.
Fig. 36 in The non-native freshwater fishes of Hong Kong: diversity, distributions, and origins
Fig. 36. Oreochromis niloticus × O. aureus hybrid, 128.8 mm SL, Pui O Stream.
Fig. 35. Oreochromis niloticus, 150.3 in The non-native freshwater fishes of Hong Kong: diversity, distributions, and origins
Fig. 35. Oreochromis niloticus, 150.3 mm SL, Kowloon Reservoir.
Fig. 33. Oreochromis aureus, 330.1 in The non-native freshwater fishes of Hong Kong: diversity, distributions, and origins
Fig. 33. Oreochromis aureus, 330.1 mm SL, Tung Tsz Stream.
Fig. 27 in The non-native freshwater fishes of Hong Kong: diversity, distributions, and origins
Fig. 27. Astronotus ocellatus, Lai King area.
ScienceDex guides
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These curated guides explain access requirements, typical timelines, costs, and reuse considerations for widely used research datasets.
Allen Brain Atlas
Allen Brain Atlas is an Allen Institute collection of brain map atlases, datasets, APIs, and analysis tools covering mouse, human, and non-human primate brain resources.
Annotated Behaviour and Observability Dataset (ABODe)
ABODe is a University of Edinburgh DataShare dataset for behavior classification in group-housed mice using home-cage video, identities, bounding boxes, ground-plate positions, and annotator labels.
DANDI Archive for NWB datasets
DANDI is a BRAIN Initiative archive for publishing and sharing neurophysiology data, including electrophysiology, optophysiology, and behavioral data packaged as NWB and related standards.
International Brain Laboratory public data
The International Brain Laboratory public data releases expose standardized mouse decision-making experiments, including Neuropixels recordings, widefield calcium imaging, behavior, and session metadata accessed through the ONE API.
OpenNeuro
OpenNeuro is a free, open platform for sharing neuroimaging datasets, with public search, dataset pages, and download paths for web, S3, DataLad, and the OpenNeuro CLI.