Sperm morphology and its influence on swimming speed in Atlantic cod
Identifieur interne : 000673 ( Main/Exploration ); précédent : 000672; suivant : 000674Sperm morphology and its influence on swimming speed in Atlantic cod
Auteurs : V. M. Tuset [Espagne, Canada] ; E. A. Trippel [Canada] ; J. De Monserrat [Espagne]Source :
- Journal of Applied Ichthyology [ 0175-8659 ] ; 2008-08.
Abstract
A protocol for staining fish spermatozoa using Hemacolor‐stain was developed for light microscopy and successfully applied to Atlantic cod (Gadus morhua). Sperm head morphology was characterized by size (length, width, area and perimeter) and shape (ellipticity, rugosity, elongation and regularity) (n = 6500 spermatozoa), and tail length (n = 260 spermatozoa) of 12 individual cod. Two spermatozoa heads sperm were clearly identified: round and elongated, being this last one more abundant (86.3%). No evidence was detected in tail length for both head types. Tails were 96.4% length of sperm and no difference in tail length was detected between head types. A positive correlation existed between head and tail length, with variability existing among males. Sperm swimming speeds varied among males with a maximum curvilinear velocity between 151.5 and 201.5 μm s−1. Mean swimming speed declined by 8.2% from 30 to 70 s post‐activation. Spermatocrit was negatively correlated with curvilinear velocity at 30 s post‐activation. Males with short sperm heads maintained their swimming velocity for longer periods that those with long heads. Fulton’s condition factor was negatively correlated with straightness of path.
Url:
DOI: 10.1111/j.1439-0426.2008.01125.x
Affiliations:
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M." last="Tuset">V. M. Tuset</name><affiliation wicri:level="1"><country xml:lang="fr">Espagne</country><wicri:regionArea>Departamento de Biología Pesquera, Instituto Canario de Ciencias Marinas, Telde (Las Palmas), Canary Islands</wicri:regionArea><wicri:noRegion>Canary Islands</wicri:noRegion></affiliation><affiliation wicri:level="1"><country xml:lang="fr">Canada</country><wicri:regionArea>Department of Fisheries and Oceans Canada, Biological Station, St Andrews, NB</wicri:regionArea><wicri:noRegion>NB</wicri:noRegion></affiliation></author><author><name sortKey="Trippel, E A" sort="Trippel, E A" uniqKey="Trippel E" first="E. A." last="Trippel">E. A. 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De Monserrat</name><affiliation wicri:level="3"><country xml:lang="fr">Espagne</country><wicri:regionArea>Unidad de Análisis por Imagen, Laboratorio de análisis Dr Echevarne, Barcelona</wicri:regionArea><placeName><settlement type="city">Barcelone</settlement><region nuts="2" type="region">Catalogne</region></placeName></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="2008-08">2008-08</date><biblScope unit="volume">24</biblScope><biblScope unit="issue">4</biblScope><biblScope unit="page" from="398">398</biblScope><biblScope unit="page" to="405">405</biblScope></imprint><idno type="ISSN">0175-8659</idno></series><idno type="istex">B9287038D307287CAF9519AFF5752BABFA33D597</idno><idno type="DOI">10.1111/j.1439-0426.2008.01125.x</idno><idno type="ArticleID">JAI1125</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">A protocol for staining fish spermatozoa using Hemacolor‐stain was developed for light microscopy and successfully applied to Atlantic cod (Gadus morhua). Sperm head morphology was characterized by size (length, width, area and perimeter) and shape (ellipticity, rugosity, elongation and regularity) (n = 6500 spermatozoa), and tail length (n = 260 spermatozoa) of 12 individual cod. Two spermatozoa heads sperm were clearly identified: round and elongated, being this last one more abundant (86.3%). No evidence was detected in tail length for both head types. Tails were 96.4% length of sperm and no difference in tail length was detected between head types. A positive correlation existed between head and tail length, with variability existing among males. Sperm swimming speeds varied among males with a maximum curvilinear velocity between 151.5 and 201.5 μm s−1. Mean swimming speed declined by 8.2% from 30 to 70 s post‐activation. Spermatocrit was negatively correlated with curvilinear velocity at 30 s post‐activation. Males with short sperm heads maintained their swimming velocity for longer periods that those with long heads. Fulton’s condition factor was negatively correlated with straightness of path.</div></front></TEI><affiliations><list><country><li>Canada</li><li>Espagne</li></country><region><li>Catalogne</li></region><settlement><li>Barcelone</li></settlement></list><tree><country name="Espagne"><noRegion><name sortKey="Tuset, V M" sort="Tuset, V M" uniqKey="Tuset V" first="V. M." last="Tuset">V. M. Tuset</name></noRegion><name sortKey="De Monserrat, J" sort="De Monserrat, J" uniqKey="De Monserrat J" first="J." last="De Monserrat">J. De Monserrat</name></country><country name="Canada"><noRegion><name sortKey="Tuset, V M" sort="Tuset, V M" uniqKey="Tuset V" first="V. M." last="Tuset">V. M. Tuset</name></noRegion><name sortKey="Trippel, E A" sort="Trippel, E A" uniqKey="Trippel E" first="E. A." last="Trippel">E. A. Trippel</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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