Sperm motility characteristics of wild Atlantic salmon (Salmo salar L.) and sea trout (Salmo trutta m. trutta L.) as a basis for milt selection
Identifieur interne : 000639 ( Main/Merge ); précédent : 000638; suivant : 000640Sperm motility characteristics of wild Atlantic salmon (Salmo salar L.) and sea trout (Salmo trutta m. trutta L.) as a basis for milt selection
Auteurs : K. Dziewulska [Pologne] ; A. Rzemieniecki [Pologne] ; J. Domagała [Pologne]Source :
- Journal of Applied Ichthyology [ 0175-8659 ] ; 2011-08.
Abstract
The aim of the study was to determine the sperm motility parameters in wild Atlantic salmon and sea trout to define criteria important for selection of milt for controlled fertilisation. Parameters for these species were determined in the fish migrating into north‐western rivers of Poland at spawning time. Eight motility parameters percentage of motile sperm (MOT), curvilinear velocity (VCL), average path velocity (VAP), straight line velocity (VSL), linearity (LIN), straightness (STR), amplitude of lateral head displacement (ALH), beat cross frequency (BCF) and motility duration were subjected to computer‐assisted sperm analysis (CASA). Milt of most individuals studied representing both salmon and trout showed spermatozoa density of 12–22 × 109 ml−1 and a high percentage of motile sperm (>70%). In general, spermatozoa swim progressively with slightly curved trajectories (mean STR = 70%, LIN = 65%) and velocity VCL of 180 μm s−1 (salmon) and 190 μm s−1 (trout), at 10 s post‐activation. Such sperm is easily accessible in the wild populations of salmon and sea trout and is recommended for use in reproduction trials. The spermatozoa of sea trout seem to show a greater tendency to follow curvilinear trajectories than those of salmon, both in the beginning and the final phase of motion. In the first phase of motility, the values and time dependencies of the motility parameters were similar in both species. In the end phase of movement differences in LIN and BCF time dependencies were found in the samples representing the two species. In salmon the linearity and beat cross frequency remained stable in this phase, contrary to the patterns in sea trout for which LIN decreased while BCF increased in the end period of movement. Durations of movement were similar in both species (ranges of 20–40 s).
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DOI: 10.1111/j.1439-0426.2011.01759.x
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Dziewulska</name><affiliation wicri:level="1"><country xml:lang="fr">Pologne</country><wicri:regionArea>Department of General Zoology, University of Szczecin, Szczecin</wicri:regionArea><wicri:noRegion>Szczecin</wicri:noRegion></affiliation></author><author><name sortKey="Rzemieniecki, A" sort="Rzemieniecki, A" uniqKey="Rzemieniecki A" first="A." last="Rzemieniecki">A. Rzemieniecki</name><affiliation wicri:level="1"><country xml:lang="fr">Pologne</country><wicri:regionArea>Department of General Zoology, University of Szczecin, Szczecin</wicri:regionArea><wicri:noRegion>Szczecin</wicri:noRegion></affiliation></author><author><name sortKey="Domagala, J" sort="Domagala, J" uniqKey="Domagala J" first="J." last="Domagała">J. Domagała</name><affiliation wicri:level="1"><country xml:lang="fr">Pologne</country><wicri:regionArea>Department of General Zoology, University of Szczecin, Szczecin</wicri:regionArea><wicri:noRegion>Szczecin</wicri:noRegion></affiliation></author></analytic><monogr></monogr><series><title level="j">Journal of Applied Ichthyology</title><idno type="ISSN">0175-8659</idno><idno type="eISSN">1439-0426</idno><imprint><publisher>Blackwell Publishing Ltd</publisher><pubPlace>Oxford, UK</pubPlace><date type="published" when="2011-08">2011-08</date><biblScope unit="volume">27</biblScope><biblScope unit="issue">4</biblScope><biblScope unit="page" from="1047">1047</biblScope><biblScope unit="page" to="1051">1051</biblScope></imprint><idno type="ISSN">0175-8659</idno></series><idno type="istex">69FEB0E23F5516837CF1F762B28DDFAA1C827DCC</idno><idno type="DOI">10.1111/j.1439-0426.2011.01759.x</idno><idno type="ArticleID">JAI1759</idno></biblStruct></sourceDesc><seriesStmt><idno type="ISSN">0175-8659</idno></seriesStmt></fileDesc><profileDesc><textClass></textClass><langUsage><language ident="en">en</language></langUsage></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">The aim of the study was to determine the sperm motility parameters in wild Atlantic salmon and sea trout to define criteria important for selection of milt for controlled fertilisation. Parameters for these species were determined in the fish migrating into north‐western rivers of Poland at spawning time. Eight motility parameters percentage of motile sperm (MOT), curvilinear velocity (VCL), average path velocity (VAP), straight line velocity (VSL), linearity (LIN), straightness (STR), amplitude of lateral head displacement (ALH), beat cross frequency (BCF) and motility duration were subjected to computer‐assisted sperm analysis (CASA). Milt of most individuals studied representing both salmon and trout showed spermatozoa density of 12–22 × 109 ml−1 and a high percentage of motile sperm (>70%). In general, spermatozoa swim progressively with slightly curved trajectories (mean STR = 70%, LIN = 65%) and velocity VCL of 180 μm s−1 (salmon) and 190 μm s−1 (trout), at 10 s post‐activation. Such sperm is easily accessible in the wild populations of salmon and sea trout and is recommended for use in reproduction trials. The spermatozoa of sea trout seem to show a greater tendency to follow curvilinear trajectories than those of salmon, both in the beginning and the final phase of motion. In the first phase of motility, the values and time dependencies of the motility parameters were similar in both species. In the end phase of movement differences in LIN and BCF time dependencies were found in the samples representing the two species. In salmon the linearity and beat cross frequency remained stable in this phase, contrary to the patterns in sea trout for which LIN decreased while BCF increased in the end period of movement. Durations of movement were similar in both species (ranges of 20–40 s).</div></front></TEI></record>Pour manipuler ce document sous Unix (Dilib)
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