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5 results for “Mallotus villosus”
Data from: Seasonal dynamics of spatial distribution and overlap between Northeast Arctic cod (Gadus morhua) and capelin (Mallotus villosus) in the Barents Sea
The trophic link between cod (Gadus sp.) and capelin (Mallotus sp.) is important in many panarctic ecosystems. Since the early 2000s, the Northeast Arctic cod stock (G. morhua) in the Barents Sea has increased greatly, and the sea has been exceptionally warm. Such changes have potentially large effects on species distributions and overlap, which in turn could affect the strength of species interactions. Due to its high latitude location, the Barents Sea has strong seasonal variation in physical conditions and interactions. To study drivers of variation in cod-capelin overlap, we use data from two annual surveys run in winter and in autumn of 2004-2015. We first model winter and autumn spatial distributions of mature and immature cod and capelin. We then calculate overlap from model predictions on a grid with similar spatial resolution as the survey data. Our approach allowed us to interpret changes in overlap as species-specific effects of stock size and temperature, while accounting for sampling variation due to sampling time and depth. We found that during winter both species expanded their distribution in response to increased stock sizes, but how strongly and where the expansion occurred varied. The effect of temperature on distributions varied in space, and differed for cod and capelin and for different components of the two species. The results for autumn were clearer and more consistent. Both species expanded their distribution areas as their stock sizes increased. A positive effect of temperature was found in the north-eastern Barents Sea, where temperatures were lowest at the start of the study. Overlap increased and shifted north-eastwards during the study period and remained high despite a decline in the capelin stock. The increased overlap during autumn could mainly be attributed to the shift in cod distribution with increased cod stock biomass.
Data from: Historical introgression and the role of selective vs. neutral processes in structuring nuclear genetic variation (AFLP) in a circumpolar marine fish, the capelin (Mallotus villosus)
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Data from: Seasonal dynamics of spatial distribution and overlap between Northeast Arctic cod (Gadus morhua) and capelin (Mallotus villosus) in the Barents Sea
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Copy Number variants in Mallotus villosus
<p>Taking advantage of recent developments allowing CNV analysis from RAD-seq data (<a class="nova-e-link nova-e-link--color-inherit nova-e-link--theme-decorated" href="https://www.researchgate.net/deref/http%3A%2F%2Fdx.doi.org%2F10.1111%2Fmec.15565?_sg%5B0%5D=-uwA9TZisRRXnspI5ElYUaPv2ChLuHLDZPIJZABoML2rc-geS2mVnZVIt2u4FAB6_SPD-DeRxtzyN3RjHivkmfmvEg.JqPMUYewJwfNoZvoALtl54UTEL4BWYI0NA87y3HrK16wm8cRVOG0c0owiV4QoaSysHfAZCLPkLmn-UaqCdolJQ">10.1111/mec.15565</a>), we investigated how variation in fitness-related traits, local environmental conditions and demographic history are associated with CNVs, and how subsequent copy number variation drives population genetic structure in a marine fish, the capelin (<i>Mallotus villosus</i>). We collected 1536 DNA samples from 35 sampling sites in the north Atlantic Ocean and identified 6620 putative CNVs. Raw sequencing data for GBS libraries have been published in a previous study (Cayuela et al. 2020, <a class="nova-e-link nova-e-link--color-inherit nova-e-link--theme-decorated" href="https://www.researchgate.net/deref/http%3A%2F%2Fdx.doi.org%2F10.1111%2Fmec.15499?_sg%5B0%5D=OGdqMkvPArx5ICrgLrdT_ifFufXzoOZp0J7gLQEctL4EWpJv-h9FK8yFaom_h68N368lpxVYXRREN9BRpAi7lH0n8A.ylPnOWuObAEr1NJn9bzfYxNNAAwvYDvN0jDBR05xnfdW8Azf-PmnI7jDZFhecO1Kt1aTdFuxG0Yr3ff2e10XCg">10.1111/mec.15499</a>) and are available under accession no. PRJNA631144. Here, we provide the files of normalized read depth for the 6620 putative CNVs and environmental data used in our CNV analyses.</p>
Copy Number variants in Mallotus villosus
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