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Effects of Cryopreservation on Morphology and Viability of Sperm and Larvae of Atlantic Cod, Gadus morhua L.

Identifieur interne : 000F40 ( Istex/Corpus ); précédent : 000F39; suivant : 000F41

Effects of Cryopreservation on Morphology and Viability of Sperm and Larvae of Atlantic Cod, Gadus morhua L.

Auteurs : Oddvar H. Ottesen ; Vegard Marschh User ; Igor Babiak

Source :

RBID : ISTEX:7A0F25D90350D0733E6D6B12CF807EF9B592D7D9

Abstract

The effects of cryopreservation on the viability, morphology and capability of spermatozoa in Atlantic cod, Gadus morhua L., were studied. The sperm was cryopreserved in straws using Hanks' balanced salt solution, hens' egg yolks and glycerol in the vapor of liquid nitrogen. Straws of cryopreserved sperm were stored in liquid nitrogen and thawed in seawater (35 C) for 8 sec before use. The motility of cryopreserved sperm was low (range 8–19%) compared to motility before freezing (range 69–76%). The fertilization rate (range 94–95%) in control groups using fresh sperm was significantly higher (P < 0.05) than in test groups (range 48–72%). In cryopreserved sperm, a relatively high percentage (range 82–93%) of the spermatozoa had changes in morphology. Many spermatozoa had no mitochondria; when mitochondria were present, the observed number varied from one and five in cryopreserved spermatozoa, and from two and seven in noncryopreserved spermatozoa. In groups where cryopreserved sperm was used, the hatching rate was lower (range 18–38%) than in control groups (range 41–63%), indicating higher mortality during embryonic development. Paternal effects on progeny performance were noted in the proportion of abnormalities but no negative effects were identified in newly hatched larvae produced using cryopreserved sperm.

Url:
DOI: 10.1111/j.1749-7345.2012.00571.x

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ISTEX:7A0F25D90350D0733E6D6B12CF807EF9B592D7D9

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<abstract>The effects of cryopreservation on the viability, morphology and capability of spermatozoa in Atlantic cod, Gadus morhua L., were studied. The sperm was cryopreserved in straws using Hanks' balanced salt solution, hens' egg yolks and glycerol in the vapor of liquid nitrogen. Straws of cryopreserved sperm were stored in liquid nitrogen and thawed in seawater (35 C) for 8 sec before use. The motility of cryopreserved sperm was low (range 8–19%) compared to motility before freezing (range 69–76%). The fertilization rate (range 94–95%) in control groups using fresh sperm was significantly higher (P < 0.05) than in test groups (range 48–72%). In cryopreserved sperm, a relatively high percentage (range 82–93%) of the spermatozoa had changes in morphology. Many spermatozoa had no mitochondria; when mitochondria were present, the observed number varied from one and five in cryopreserved spermatozoa, and from two and seven in noncryopreserved spermatozoa. In groups where cryopreserved sperm was used, the hatching rate was lower (range 18–38%) than in control groups (range 41–63%), indicating higher mortality during embryonic development. Paternal effects on progeny performance were noted in the proportion of abnormalities but no negative effects were identified in newly hatched larvae produced using cryopreserved sperm.</abstract>
<relatedItem type="host">
<titleInfo>
<title>Journal of the World Aquaculture Society</title>
</titleInfo>
<genre type="journal">journal</genre>
<identifier type="ISSN">0893-8849</identifier>
<identifier type="eISSN">1749-7345</identifier>
<identifier type="DOI">10.1111/(ISSN)1749-7345</identifier>
<identifier type="PublisherID">JWAS</identifier>
<part>
<date>2012</date>
<detail type="volume">
<caption>vol.</caption>
<number>43</number>
</detail>
<detail type="issue">
<caption>no.</caption>
<number>3</number>
</detail>
<extent unit="pages">
<start>375</start>
<end>386</end>
<total>12</total>
</extent>
</part>
</relatedItem>
<identifier type="istex">7A0F25D90350D0733E6D6B12CF807EF9B592D7D9</identifier>
<identifier type="DOI">10.1111/j.1749-7345.2012.00571.x</identifier>
<identifier type="ArticleID">JWAS571</identifier>
<accessCondition type="use and reproduction" contentType="copyright">Published 2012. This article is a U.S. Government work and is in the public domain in the USA.</accessCondition>
<recordInfo>
<recordContentSource>WILEY</recordContentSource>
<recordOrigin>Blackwell Publishing Ltd</recordOrigin>
</recordInfo>
</mods>
</metadata>
<serie></serie>
</istex>
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