Alligator gar (Atractosteus spatula, Lacépède 1803) vitellogenin: purification, characterization and establishment of an enzyme‐linked immunosorbent assay
Identifieur interne : 000027 ( France/Analysis ); précédent : 000026; suivant : 000028Alligator gar (Atractosteus spatula, Lacépède 1803) vitellogenin: purification, characterization and establishment of an enzyme‐linked immunosorbent assay
Auteurs : Roberto Mendoza [Mexique] ; Olga Santillán [Mexique] ; Agnés Revol [France] ; Carlos Aguilera [Mexique] ; Julio Cruz [Mexique]Source :
- Aquaculture Research [ 1355-557X ] ; 2012-04.
English descriptors
- KwdEn :
Abstract
Alligator gar (Atractosteus spatula) is a non‐teleost bony fish distributed in North America. Gar populations have drastically declined as a consequence of habitat deterioration and the lack of regulation for their capture. Control of reproduction is critical for recovering their natural populations. The impossibility to distinguish genders and the determination of sexual maturity have hindered their successful reproduction. This research was aimed at developing an enzyme‐linked immunosorbent assay (ELISA) for the quantitative estimation of vitellogenin (VTG), a female‐specific protein. Plasmatic VTG from 17β‐estradiol (E2)‐induced juveniles and ovary vitellin from adult females were purified and characterized. Polyclonal antibodies against both proteins were produced to develop an ELISA. The immunoassay was validated by quality tests such as sensitivity, parallelism, recovery, reproducibility and specificity. Vitellogenin was determined in different tissues (plasma, mucus, liver and gills) of alligator gar. Vitellogenin and E2 concentrations in female breeders were found to be higher in November, before the spring spawning season. This approach represents a quick, reliable and non‐invasive practical alternative to distinguish genders and evaluate gonad maturation.
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DOI: 10.1111/j.1365-2109.2011.02870.x
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ISTEX:1655288C13C37F5EB1CEC3D08CB8534F5603C084Le document en format XML
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Gar populations have drastically declined as a consequence of habitat deterioration and the lack of regulation for their capture. Control of reproduction is critical for recovering their natural populations. The impossibility to distinguish genders and the determination of sexual maturity have hindered their successful reproduction. This research was aimed at developing an enzyme‐linked immunosorbent assay (ELISA) for the quantitative estimation of vitellogenin (VTG), a female‐specific protein. Plasmatic VTG from 17β‐estradiol (E2)‐induced juveniles and ovary vitellin from adult females were purified and characterized. Polyclonal antibodies against both proteins were produced to develop an ELISA. The immunoassay was validated by quality tests such as sensitivity, parallelism, recovery, reproducibility and specificity. Vitellogenin was determined in different tissues (plasma, mucus, liver and gills) of alligator gar. Vitellogenin and E2 concentrations in female breeders were found to be higher in November, before the spring spawning season. This approach represents a quick, reliable and non‐invasive practical alternative to distinguish genders and evaluate gonad maturation.</div></front></TEI><affiliations><list><country><li>France</li><li>Mexique</li></country></list><tree><country name="Mexique"><noRegion><name sortKey="Mendoza, Roberto" sort="Mendoza, Roberto" uniqKey="Mendoza R" first="Roberto" last="Mendoza">Roberto Mendoza</name></noRegion><name sortKey="Aguilera, Carlos" sort="Aguilera, Carlos" uniqKey="Aguilera C" first="Carlos" last="Aguilera">Carlos Aguilera</name><name sortKey="Cruz, Julio" sort="Cruz, Julio" uniqKey="Cruz J" first="Julio" last="Cruz">Julio Cruz</name><name sortKey="Santillan, Olga" sort="Santillan, Olga" uniqKey="Santillan O" first="Olga" last="Santillán">Olga Santillán</name></country><country name="France"><noRegion><name sortKey="Revol, Agnes" sort="Revol, Agnes" uniqKey="Revol A" first="Agnés" last="Revol">Agnés Revol</name></noRegion></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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