By Ramón Carmona, Alberto Domezain, Manuel García Gallego, José Antonio Hernando, Fernando Rodríguez, Manuel Ruiz-Rejón
Sturgeons are thought of “living fossils”, sharing many morphological and organic beneficial properties with ancestral fish. moreover, sturgeons are of the maximum curiosity from an fiscal standpoint, not just for the caviar yet for the flesh. besides the fact that, the wild populations of nearly all of the species are at severe threat of extinction around the world. So, it really is pressing to advance ideas for either farming tradition and conservation and restoration in normal habitats.
This booklet offers a accomplished view of the biology and sustainable improvement of sturgeons placing emphasis at the Southern Europe autochthonous species equivalent to Acipenser nacarii and Acipenser sturio that percentage geographical distribution. different suitable species (such as Huso huso, A. oxyrhinchus, A. ruthenus, A. stellatus) and components (Germany, Russia, North the US) also are thought of. The contents are organised in 3 sections: Taxonomy and Biogeography (including the morphological and genetic analyses that make clear the taxonomy and phylogeny of sturgeons, interested by these from Southern Europe), Biology and Aquaculture (where a number of elements of the developmental biology, feeding, and replica are thought of when it comes to the advance of sturgeon farming), and restoration and Conservation (that collates and analyses assorted restoration examine activities, the ecology of the rivers for recovery in addition to the issues regarding the alternate of caviar).
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Additional info for Biology, Conservation and Sustainable Development of Sturgeons
Sturio and which in the morphological analysis presented various characteristics intermediate between the two species, was left under this classification (given the doubt involved) and was assigned by SDA to the group A. naccarii, though the attribution was not entirely conclusive. This result occurred because of the values of the SOLJ and FB indices, which were closer to the lowest limit of the range corresponding to A. sturio. Therefore, after identifying this specimen, we felt that it should remain classified as A.
Biology, Conservation and Sustainable Development of Sturgeons. , pp (to be completed by the publishers). A. 1999. The sturgeon as a valid tool for sustainable development: application in the river Guadalquivir (Andalusia, Spain). J. Appl. Ichth. 15(4–5), 299–301. , Almodóvar, A. 1993. 758) in the Guadalquivir estuary (SW Spain). Arch. , 129, 253–255. , Lobón-Cerviá, J. 1991. , 1758) in Spain. The population of the river Guadalquivir: a case history and claim for a restoration programme. In: P.
Garrido-Ramos et al. 2 Analysis of Mitochondrial and Nuclear DNA Markers 39 Fig. 5 Some of the museum specimens of sturgeon analysed. From top to bottom: one of the EBD specimens, the UGP specimen and the GS specimen First, for each individual, we tested the specific status by analysing the presence/ absence of a discriminative marker such as the HindIII satellite-DNA family. Further, for several selected individuals (according to availability and quality of DNA), we analysed the sequences of three nuclear-DNA markers (the satelliteDNA families HindIII and PstI and the NTS spacers of the 5S genes) and two mitochondrial-DNA markers (two fragments, one of the cytochrome b and one of the 12S genes).