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129 results for “Salvelinus”
Supplemental data from: Nature or nurture: A genetic basis for the behavioral selection of depth in siscowet and lean lake charr (Salvelinus namaycush) ecomorphs
<p>These files contain the raw depth and temperature sensor data from siscowet and lean lake charr (<em>Salvelinus namaycush</em>) ecomorphs tagged with pop-up satellite archival tags (PSATs). These fish were produced from wild gametes taken from Lake Superior and reared in a common garden study for nine years and then tagged with PSATs and released in southern Lake Superior. The dataset is supplemental to:</p> <p>Goetz, F., Sitar, S., Seider, M., and Jasonowicz, A. 2022. Nature or nurture: A genetic basis for the behavioral selection of depth in siscowet and lean lake charr (<em>Salvelinus namaycush</em>) ecomorphs. Canadian Journal of Fisheries and Aquatic Sciences. (in press).</p> <p><strong>Data description for metadata.csv:</strong></p> <p>This file contains the metadata associated with each tag deployment. This includes biological data as well as key mission paramters.</p> <table> <thead> <tr> <td>Column</td> <td>Type</td> <td>Description</td> </tr> </thead> <tbody> <tr> <td>mission_id</td> <td>integer</td> <td>mission identifier</td> </tr> <tr> <td>tag_sn</td> <td>integer</td> <td>tag serial number</td> </tr> <tr> <td>ecotype</td> <td>string</td> <td>lake trout ecotype</td> </tr> <tr> <td>release_date</td> <td>string</td> <td>date of tag release</td> </tr> <tr> <td>length_mm</td> <td>float</td> <td>total length in mm</td> </tr> <tr> <td>weight_g</td> <td>float</td> <td>weight in g</td> </tr> <tr> <td>lipid</td> <td>float</td> <td>lipid level meadured by Distell fatmeter set in research mode</td> </tr> <tr> <td>release_site</td> <td>string</td> <td>release site (deep or shallow site)</td> </tr> <tr> <td>sampling_rate</td> <td>string</td> <td>sampling interval of tag (format=HH:MM:SS)</td> </tr> <tr> <td>mission_end_utc</td> <td>datetime</td> <td>programmed tag pop off date and time in UTC time (format=YYYY-MM-DD HH:MM:SS)</td> </tr> <tr> <td>notes</td> <td>string</td> <td>notes and comments</td> </tr> </tbody> </table> <p> </p> <p><strong>Data description for the raw sensor data files:</strong></p> <p>The raw sensor data is found in the files that are prefixed with "raw-sensor-data". The data for each tag is in contained in a seperate file and the files are named as follows "raw-sensor-data-{<em><strong>mission_identifier</strong></em>}-{<em><strong>tag_serial_number</strong></em>}.csv".</p> <table> <thead> <tr> <td>Column</td> <td>Type</td> <td>Description</td> </tr> </thead> <tbody> <tr> <td>mission_id</td> <td>integer</td> <td>mission identifier</td> </tr> <tr> <td>tag_sn</td> <td>integer</td> <td>tag serial number</td> </tr> <tr> <td>timestamp_utc</td> <td>datetime</td> <td>timestamp of sensor reading (format=YYYY-MM-DD HH:MM:SS)</td> </tr> <tr> <td>depth_m</td> <td>string</td> <td>depth in meters</td> </tr> <tr> <td>temperature_c</td> <td>string</td> <td>temperature in degrees celcius</td> </tr> </tbody> </table>
Brook trout (Salvelinus fontinalis) cyt b qPCR data from Hidden Lake (Banff National Park, Canada) over two rotenone applications between 2018 and 2020.
Water samples were taken in Hidden Lake at five different time points around two rotenone applications: (i) five weeks prior to the first rotenone application, on July 12 2018; (ii) approximately three weeks after the first application of rotenone, on 7 September 2018; (iii) approximately 10 months after the first rotenone application, on 10 July 2019; and (iv) one year after the final rotenone treatment, on 19 August 2020. For each time point, four pelagic and four littoral water samples were taken from Hidden Lake, as well as 8 to 13 water samples from Hidden Creek and Coral Creek for a total of 16 to 21 samples per time point. Quantitative PCR (qPCR) method was used to produce brook trout (Salvelinus fontinalis) cytochrome b copy number for each sample. The objective of this study was use eDNA to assess the efficacy of invasive brook trout removal using rotenone.
Data from: Assembly ASM291031v2 (Genbank: GCA_002910315.2) identified as assembly of the Northern Dolly Varden (Salvelinus malma malma) genome, and not the Arctic char (S. alpinus) genome
<p>Here is the data that is a supplementary to the preprint: Shedko S.V. 2019. Assembly ASM291031v2 (Genbank: GCA_002910315.2) identified as assembly of the Northern Dolly Varden (Salvelinus malma malma) genome, and not the Arctic char (S. alpinus) genome // arXiv:1912.02474 <a href="https://arxiv.org/abs/1912.02474">https://arxiv.org/abs/1912.02474</a></p>
Fig. 1. Acanthocephalus lucidus Van Cleave, 1925 in An Amphibian Acanthocephalan, Acanthocephalus lucidus (Echinorhynchida: Echinorhynchidae), Infecting a Fish, Salvelinus leucomaenis leucomaenis (Salmoniformes: Salmonidae)
Fig. 1. Acanthocephalus lucidus Van Cleave, 1925, male (NSMT–As 4040), from the intestine of Salvelinus leucomaenis leucomanis (Pallas, 1814). A, entire body; B, proboscis. Scale bars: A, 0.5 mm; B, 0.2 mm.
Fig. 1 in Salmincola markewitschi (Copepoda: Lernaeopodidae) Parasitic on Whitespotted Char, Salvelinus leucomaenis, in a Mountain Stream of Honshu Island, Central Japan
Fig. 1. Salmincola markewitschi, female, NSMT-Cr 28337, from whitespotted char, Salvelinus leucomaenis, from the Zako River, a tributary of the upper Nakatsu River, Nagano Prefecture, central Honshu Island, Japan. A, habitus, lateral view; B, habitus, dorsal view; C, cephalothorax, second maxillae and bulla, anterior view; D, first antenna, dorsal view; E, second antenna, anterolateral view; F, exopod of second antenna, lateral view; G, H, mandibles, lateral view; I, first maxilla, lateral view; J, maxilliped, dorsolateral view; K, maxilliped, palp, dorsolateral view. Abbreviations: h1, hook 1; p, palp; p4, process 4; p5, process 5; s2, spine 2; t3, tubercle 3. Scale bars: A–C, 1 mm; D, 20 µm; E, 50 µm; F–H, 20 µm; I, 30 µm; J, 100 µm; K, 20 µm.
Fig. 3 in Salmincola edwardsii (Copepoda: Lernaeopodidae) Parasitic on Southern Asian Dolly Varden, Salvelinus malma krascheninnikova, from Hokkaido Island, Japan, with the Southernmost Distribution Record of the Copepod in Asia
Fig. 3. Map of Hokkaido Island and the southern Kuril Islands, showing the collection localities of Salmincola edwardsii in the previous (closed triangles, Shedko and Shedko, 2002) and present (closed circles) studies. Open circles show no copepod infection on southern Asian Dolly Varden. 1, Olya Inlet (Prostor Bay), Iturup Island; 2, Kuibyshev Bay, Iturup Island; 3, Petrova River, Kunashir Island; 4, a nameless creek, Kunashir Island; 5, Rusha River; 6, Rausu River; 7, Shari River; 8, Shibetsu River; 9, Saru River; 10, Yoichi River; 11, Shiribetsu River; 12, Notto River; 13, Chihase River.
Fig. 2 in Salmincola edwardsii (Copepoda: Lernaeopodidae) Parasitic on Southern Asian Dolly Varden, Salvelinus malma krascheninnikova, from Hokkaido Island, Japan, with the Southernmost Distribution Record of the Copepod in Asia
Fig. 2. Female of Salmincola edwardsii attached to the base of gill filament of southern Asian Dolly Varden, Salvelinus malma krascheninnikova, from the Shari River, Hokkaido Island. Formalinfixed and later ethanol-preserved specimen, lateral view. Abbreviations: c, cephalothorax; es, egg sac; ga, gill arch; gf, gill filament; mx2, second maxilla; mxp, maxilliped; t, trunk. Scale bar: 1 mm. Note most portions of the infected gill filament lost, and a bulbous swelling (*) enveloping the bulla.
Fig. 1 in Salmincola edwardsii (Copepoda: Lernaeopodidae) Parasitic on Southern Asian Dolly Varden, Salvelinus malma krascheninnikova, from Hokkaido Island, Japan, with the Southernmost Distribution Record of the Copepod in Asia
Fig. 1. Salmincola edwardsii, female, from southern Asian Dolly Varden, Salvelinus malma krascheninnikova, from the Shari River, Hokkaido Island. A, habitus, anterolateral view; B, second antenna, lateral view; C, mandible, lateral view; D, first maxilla, lateral view; E, maxilliped, lateral view. Abbreviations: ant2, second antenna; b, bulla; c, cephalothorax; es, egg sac; ex, exopod; h1, hook 1; mx2, second maxilla; mxp, maxilliped; p, palp; p4, process 4; p5, process 5; s2, spine 2; sy, sympod; t, trunk. Scale bars: A, 1 mm; B, 50 µm; C, 20 µm; D, 100 µm; E, 200 µm.
Further evidence from common garden rearing experiments of heritable traits separating lean and siscowet lake charr (Salvelinus namaycush) ecotypes
<p>Genetic evidence of selection for complex and polygenically regulated phenotypes can easily become masked by neutral population genetic structure and phenotypic plasticity. Without direct evidence of genotype-phenotype associations, it can be difficult to conclude to what degree a phenotype is heritable or a product of environment. Common garden laboratory studies control for environmental stochasticity and help to determine the mechanism that regulates traits. Here we assess lipid content, growth, weight, and length variation in full and hybrid F<sub>1</sub> crosses of deep and shallow water sympatric lake charr ecotypes reared for nine years in a common garden experiment. Redundancy analysis (RDA) and quantitative-trait-loci (QTL) genomic scans are used to identify associations between genotypes at 19,714 single nucleotide polymorphisms (SNPs) aligned to the lake charr genome and individual phenotypes to determine the role that genetic inheritance plays in ecotype phenotypic diversity. Lipid content, growth, length, and weight differed significantly among lake charr crosses throughout the experiment suggesting that pedigree plays a large role in lake charr development. Polygenic scores of 15 SNPs putatively associated with lipid content and/or condition factor indicated that ecotype distinguishing traits are polygenically regulated and additive. A QTL identified on chromosome 38 contained >200 genes, some of which were associated with lipid metabolism and growth, demonstrating the complex nature of ecotype diversity. The results of our common garden study further indicate that lake charr ecotypes observed in nature are pre-determined at birth and that ecotypes differ fundamentally in lipid metabolism and growth.</p>
Figure 4 in The brook trout Salvelinus fontinalis (Mitchill, 1814) in the Saint-Pierre and Miquelon archipelago: a review
Figure 4. – Ecotypic diversity of brook trout populations in the Saint-Pierre and Miquelon archipelago. A: Life cycle of anadromous and resident freshwater brook trout in the coastal ponds and streams of the archipelago. B: Life cycle of migratory and resident freshwater brook trout in the Mirande system. Green (A) and white (B) arrows show movements in the marine environment (A) or the Grand Étang de Mirande (B). The blue arrows (light and dark) correspond to movements in the rivers/ponds (A) or tributaries of the Mirande (B).
Figure 5 in The brook trout Salvelinus fontinalis (Mitchill, 1814) in the Saint-Pierre and Miquelon archipelago: a review
Figure 5. – Locations of the three hydrographic systems used for the aquaculture project initiated by the Association de Recherche pour le Développement de l'Aquaculture (ARDA) and the Institut Scientifique et Technique des Pêches Maritimes (ISTPM) at the end of the 1980s in Saint-Pierre and Miquelon.
Figure 3 in The brook trout Salvelinus fontinalis (Mitchill, 1814) in the Saint-Pierre and Miquelon archipelago: a review
Figure 3. – Ecotypic diversity of brook trout populations in the Saint-Pierre and Miquelon; two individuals fished in the Mère Durand River (see location in Fig. 1B). Above: anadromous ecotype; Below: resident ecotype (©: Edgard Gustave).
Fig. 3 in Histopathological characterisation of retinal lesions associated to Diplostomum species (Platyhelminthes: Trematoda) infection in polymorphic Arctic charr Salvelinus alpinus
Fig. 3. Normal aspect of the retina in Arctic charr with different layers. From the eye exterior to the eye interior: (RP): Retinal pigment epithelium. (RC) Cones and rods layer. (ON) Outer nuclear layer. (OP) Outer plexiform layer. (IN) Inner nuclear layer (IP) Inner plexiform layer. (GC) Ganglion cell layer. (GA) Axons of the ganglion layer. Scale bar = 300 μm.
Fig. 6 in Histopathological characterisation of retinal lesions associated to Diplostomum species (Platyhelminthes: Trematoda) infection in polymorphic Arctic charr Salvelinus alpinus
Fig. 6. Edge of one of the vesicles produced by the accumulation of parasites. Retinal pigment layer and rods and cones layer display a progressive alteration in their structure and finally both layers become detached. Notice the reduction of the thickness of the RPE (arrow) in the vesicle. Scale bar = 300 μm.
Fig. 12 in Histopathological characterisation of retinal lesions associated to Diplostomum species (Platyhelminthes: Trematoda) infection in polymorphic Arctic charr Salvelinus alpinus
Fig. 12. PP-morphs. Diffuse changes in the posterior retina affecting mainly the RPE layer suggesting potential healing. Scale bar = 200 μm.
Fig. 4 in Histopathological characterisation of retinal lesions associated to Diplostomum species (Platyhelminthes: Trematoda) infection in polymorphic Arctic charr Salvelinus alpinus
Fig. 4. Diplostomum sp. metacercaria within the retinal structures. This specimen is clearly placed between the retinal pigmented epithelium (RP) and rod and cones layer (RC) creating a small space between them and the parasite. Damaged retinal pigment epithelium is clearly observed and also rod and cone layer display morphological alterations. Scale bar = 200 μm.
Fig. 11. A in Histopathological characterisation of retinal lesions associated to Diplostomum species (Platyhelminthes: Trematoda) infection in polymorphic Arctic charr Salvelinus alpinus
Fig. 11. A single Diplostomum sp. metacercaria within the posterior retina with scarce development of surrounding vesicle and mechanical compression against the RPE and the cones and rods layers. Scale bar = 200 μm.
Fig. 7 in Histopathological characterisation of retinal lesions associated to Diplostomum species (Platyhelminthes: Trematoda) infection in polymorphic Arctic charr Salvelinus alpinus
Fig. 7. Early lesions in RPE and RC in the retina closer to the edge of the vesicles. Cones and rods display a disorganized pattern between the pigmented processes of the RPE. Scale bar = 100 μm.
Fig. 2 in Histopathological characterisation of retinal lesions associated to Diplostomum species (Platyhelminthes: Trematoda) infection in polymorphic Arctic charr Salvelinus alpinus
Fig. 2. Vesicle with several Diplostomum specimens in a histological section. Vesicles are typically located near the ciliary body/retina contact area. C: cornea. I: iris. H/E. Scale bar = 1 mm.
Fig. 5 in Histopathological characterisation of retinal lesions associated to Diplostomum species (Platyhelminthes: Trematoda) infection in polymorphic Arctic charr Salvelinus alpinus
Fig. 5. Large vesicle with sections of many Diplostomum specimens. The vesicle clearly creates a large space between RP and RC. Scale bar = 400 μm.
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