Weitere biologische Literatur (eingeschränkter Zugriff)
Refine
Document Type
- Article (2) (remove)
Has Fulltext
- yes (2) (remove)
Is part of the Bibliography
- no (2)
Keywords
- Taxonomy (2) (remove)
Paleogeographical, morphological, ecological, physiological, linguistic, archaeological and historical evidence is used to explain the origin and history of the domestication of the wild common carp. The closest wild ancestor of the common carp originated in the drainages of the Black, Caspian andAral seas and dispersed west as far as the Danube River and east into Siberia. The common carp today is represented by the uncertain east Asian subspecies Cyprinus carpio haematopterus and by the European Cyprinus carpio carpio. There is some reason to think that Romans were the first to culture carp collected from the Danube, and that the tradition of the "piscinae dulces" was continued in monasteries throughout the Middle Ages. We have much better documentation of carp culture in ponds of lay and clerical landowners in western Europe after the 11 th century. Distribution of the common carp west of the Danube's piedmont zone was clearly brought about by humans, as was its introduction throughout the continents. Some domestication in China may have occurred independently of similar activities in Europe, but most of the modern-day activities with the common carp in far east Asia are restricted to the domesticated common carp imported from Europe, or at best to hybrids of local and imported strains. The xanthic (red) common carp seem to have first appeared in early cultures of Europe, China and Japan but reached their fame through recent artificial selection of multicolored aberrants in Niigata Prefecture of Japan. In monetary value, production of the colored carp - the Japanese "nishikigoi" - now exceeds the production of carp as human food. As "swimming flowers" nishikigoi delight modem people as much as the taste of carp may have delighted the Romans and medieval folks at the beginning of carp domestication. The common carp is not only the most important domesticated fish but contributes over I million metric tons to world aquaculture. The surviving wild forms of the common carp are threatened or close to the fate of the aurochs, the ancestor of cattle, which became extinct in 1627.
Se presenta una base de datos taxonómica y distribucional de los moluscos marinos, telTestres y dulceacuícolas de Chile continental e insular. Se ha descrito para Chile un total de 1.288 especies, incluidas en 236 familias. Estas especies representan alrededor del 1,8% de la fauna mundial conocida de moluscos recientes (en total unas 70.000 especies). Los gmpos más diversificados son Gastropoda (882 especies) y Bivalvia (233 especies). Del total, 1.070 son marinas, 132 terrestres y 83 de ambientes dulceacuiolas. Del total de especies, 13 son introducidas (terrestres: Milax gagates, Demceras laeve, D. reticulatum, Limax (Lehmannia) valentianus, L. (Limax)flavus, L. (L.) maximus, Oxychilus (Oxychilus) cellarius, O. (Ortizius) alliarius and Helix (Cryptomphalus) aspersa: marinas: Crassostrea gigas, Pecten mllximus, Haliotis rufescens y H. mimus) y 49 poseen importancia económica. Aun cuando las primeras referencias sobre moluscos chilenos datan de comienzos del siglo XVIII, se los conoce principalmente a través de los resultados de las expediciones oceanográficas de fines del siglo XIX y principios de éste.