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31 results for “hake”
Cryptic population substructure in Cape Hakes
<p>Genomic information has the potential to aid in the establishment of sustainable management plans for commercially exploited marine fishes, aiding in the long-term conservation of these resources. The southern African hakes (<em>Merluccius</em> <em>capensis</em> and <em>M</em>. <em>paradoxus</em>) are commercially valuable demersal fishes with similar distribution ranges but exhibiting contrasting life histories. Using a comparative framework based on Pool-Seq genome-wide SNP data, we investigated <span>whether the evolutionary processes that shaped </span>extant patterns of diversity and divergence are shared among these two congeneric fishes, or unique to each one. Our findings revealed that <em>M. capensis </em>and<em> M. paradoxus</em> show similar levels of genome-wide diversity, despite different census sizes and life-history features. In addition, <em>M. capensis</em> shows three highly structured geographic populations across the Benguela Current region (one in the northern Benguela and two in the southern Benguela), with no consistent genome-environment associations detected. In contrast, although population structure and outlier analyses suggested panmixia for <em>M. paradoxus</em>, reconstruction of its demographic history suggested the presence of an Atlantic-Indian Ocean subtle sub-structuring pattern. Therefore, it appears that <em>M. paradoxus</em> might be composed of two highly connected populations, one in the Atlantic and one in the southwest Indian Ocean. The reported similarly low levels of genomic diversity, as well as newly discovered genetically distinct populations in both hake species can thus assist in informing and improving conservation and management plans for the commercially important southern African <em>Merluccius</em>.</p>
Data from: When homoplasy mimics hybridization: a case study of Cape hakes (Merluccius capensis and M. paradoxus)
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Environmental DNA provides quantitative estimates of Pacific hake abundance and distribution in the open ocean.
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Cryptic population substructure in Cape Hakes
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Data from: Outlier SNP markers reveal fine-scale genetic structuring across European hake populations (Merluccius merluccius)
Shallow population structure is generally reported for most marine fish and explained as a consequence of high dispersal, connectivity and large population size. Targeted gene analyses and more recently genome-wide studies have challenged such view, suggesting that adaptive divergence might occur even when neutral markers provide genetic homogeneity across populations. Here, 381 SNPs located in transcribed regions were used to assess large- and fine-scale population structure in the European hake (Merluccius merluccius), a widely distributed demersal species of high priority for the European fishery. Analysis of 850 individuals from 19 locations across the entire distribution range showed evidence for several outlier loci, with significantly higher resolving power. While 299 putatively neutral SNPs confirmed the genetic break between basins (FCT = 0.016) and weak differentiation within basins, outlier loci revealed a dramatic divergence between Atlantic and Mediterranean populations (FCT range 0.275–0.705) and fine-scale significant population structure. Outlier loci separated North Sea and Northern Portugal populations from all other Atlantic samples and revealed a strong differentiation among Western, Central and Eastern Mediterranean geographical samples. Significant correlation of allele frequencies at outlier loci with seawater surface temperature and salinity supported the hypothesis that populations might be adapted to local conditions. Such evidence highlights the importance of integrating information from neutral and adaptive evolutionary patterns towards a better assessment of genetic diversity. Accordingly, the generated outlier SNP data could be used for tackling illegal practices in hake fishing and commercialization as well as to develop explicit spatial models for defining management units and stock boundaries.
FIGURE 6 in Pseudalataspora vanderlingeni n. sp. (Myxosporea: Bivalvulida) from gall bladders of the Cape hakes Merluccius capensis Castelnau, and M. paradoxus Franca (Teleostei: Merlucciidae)
FIGURE 6. Pseudalataspora vanderlingeni: fresh spore under phase contrast. Scale bar = 10 µm.
Fig. 10 in Age and growth of the Argentine hake Merluccius hubbsi Marini, 1933 in the Brazilian South-Southeast Region during 1996-2001
Fig. 10. Merluccius hubbsi: age-size data and growth curve fitted applying Campana back-calculated method for females.
Data from: Outlier SNP markers reveal fine-scale genetic structuring across European hake populations (Merluccius merluccius)
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Catches of Argentine hake patagonian stock in the Southwest Atlantic
<p>The dataset includes catches of Argentine hake from the patagonian stock specifically, in the EEZ of Argentina and in the waters around the Falkland Islands under UK control. Data from 1987 to 2020 in thousand tonnes.</p>
Fig. 5 in Identification of the stages of ovarian maturation of the Argentine hake Merluccius hubbsi Marini, 1933 (Teleostei: Merlucciidae): advantages and disadvantages of the use of the macroscopic and microscopic scales
Fig. 5. Merluccius hubbsi: oocyte with lipidic and proteic vitellogenesis (1.5mm length field).
Black hakes Merluccius senegalensis and M. polli scientific data surveys 2002-2016
<p>The database consists of Senegalese black hakes <em>Merluccius senegalensis</em> and <em>M. polli</em> information originating from 8 scientific deep demersal surveys off Senegal between 2002 and 2016.</p>
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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.