Diskussion:Brycon hilarii

Bessere Übersetzung

Bonito is located in Bodoquena plateau in Mato Grosso do Sul, it is a beautiful setting, replete waterfalls, caves and crystal water rivers, that in contrast with the green vegetation and rich fish meets the expectation of the visitor, making Bonito one of the main destinations of ecotourism in the country. This study was accomplished at Parque Ecológico Rio Formoso Bonito–MS.

Nothing is yet known regarding the genetic resources of these natural fish populations. Assuming the existence of population structuring in B. hilarii of the studied freshwater system, the largest genetic diversity detected between individuals from Padre Island (4) and the Miranda River (3) may reflect a juxtaposition of population strata or varied reproductive units, as there is an increased availability of artificial food in these places, which may promote an accumulation of individuals through the reduction in competition for food. Moreover, the Miranda River, with a length of 697 km, constitutes the main channel of the Miranda sub-basin, which has 43,787 km2 of drainage area, receiving waters from rivers that run through the municipal district of Bonito, as well as twelve others (SEMA, 1995). It is considered one of the main rivers of the Pantanal Region, where numerous marginal and nutrient-rich lagoons, that are ideal for feeding, are formed by the overflow of its waters during flood seasons. A different situation was observed at Sites 1 and 2, where genetic similarity was higher. At these sites, fish are not artificially fed and, therefore, do not have the same availability of food resources as in the other sites. Furthermore, as the spawning season corresponds to the time of reproductive co-migration of these population subunits, no interpopulation differentiation was observed in comparison to the non-reproductive season.

Kann man das treffender sagen? Gruss, --Graf zu Pappenheim (Diskussion) 05:22, 10. Dez. 2012 (CET)