Gar biology and culture: status and prospects
Identifieur interne : 000A91 ( Main/Exploration ); précédent : 000A90; suivant : 000A92Gar biology and culture: status and prospects
Auteurs : Roberto Mendoza Alfaro [Mexique] ; Carlos Aguilera González [Mexique] ; Allyse M. Ferrara [États-Unis]Source :
- Aquaculture Research [ 1355-557X ] ; 2008-05.
English descriptors
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Abstract
Many lepisosteid populations in North America have declined and many are now threatened as a consequence of habitat loss and alteration and commercial and sport overfishing. Over the last two decades, morphological, histological and molecular studies allowed distinguishing between different phases of development and the nutritional condition of larvae. Ontogeny of the digestive enzymes of gar larvae indicated the possibility to feed them artificial feeds since early developmental stages. An in vitro digestibility system to test different feed ingredients has been used. Important characteristics of artificial diets were identified through different feeding experiments. Endocrinological studies showed the feasibility of altering larval development and the digestive capacity of larvae. Cloning of gar growth hormone opened new avenues to enhance growth in the gars. Plasmatic vitellogenin was isolated and purified, to develop a competitive enzyme‐linked immunosorbent assay, which allowed the straightforward separation of males from females to establish appropriate proportions for reproduction and also was used to evaluate hormonal protocols to induce gonad recrudescence and spawning. This review analyzes the biology, ecology and physiology of different gar species as a basis for their domestication, mass production of larvae for repopulation experiments and for the culture of commercial‐size gar.
Url:
DOI: 10.1111/j.1365-2109.2008.01927.x
Affiliations:
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Over the last two decades, morphological, histological and molecular studies allowed distinguishing between different phases of development and the nutritional condition of larvae. Ontogeny of the digestive enzymes of gar larvae indicated the possibility to feed them artificial feeds since early developmental stages. An in vitro digestibility system to test different feed ingredients has been used. Important characteristics of artificial diets were identified through different feeding experiments. Endocrinological studies showed the feasibility of altering larval development and the digestive capacity of larvae. Cloning of gar growth hormone opened new avenues to enhance growth in the gars. Plasmatic vitellogenin was isolated and purified, to develop a competitive enzyme‐linked immunosorbent assay, which allowed the straightforward separation of males from females to establish appropriate proportions for reproduction and also was used to evaluate hormonal protocols to induce gonad recrudescence and spawning. This review analyzes the biology, ecology and physiology of different gar species as a basis for their domestication, mass production of larvae for repopulation experiments and for the culture of commercial‐size gar.</div></front></TEI><affiliations><list><country><li>Mexique</li><li>États-Unis</li></country><region><li>Louisiane</li></region></list><tree><country name="Mexique"><noRegion><name sortKey="Mendoza Alfaro, Roberto" sort="Mendoza Alfaro, Roberto" uniqKey="Mendoza Alfaro R" first="Roberto" last="Mendoza Alfaro">Roberto Mendoza Alfaro</name></noRegion><name sortKey="Gonzalez, Carlos Aguilera" sort="Gonzalez, Carlos Aguilera" uniqKey="Gonzalez C" first="Carlos Aguilera" last="González">Carlos Aguilera González</name></country><country name="États-Unis"><region name="Louisiane"><name sortKey="Ferrara, Allyse M" sort="Ferrara, Allyse M" uniqKey="Ferrara A" first="Allyse M" last="Ferrara">Allyse M. Ferrara</name></region></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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