| 000 | 02921nab a2200325 a 4500 | ||
|---|---|---|---|
| 003 | AR-ReUNN | ||
| 005 | 20260702003057.0 | ||
| 008 | 260630s2006 ag |||||||||||||||||eng | ||
| 041 | 0 | _aeng | |
| 100 | 1 |
_aFerriz, Ricardo Alberto _9144717 |
|
| 700 | 1 |
_aBaigun, Claudio R. M. _9146971 |
|
| 245 | 1 | 0 | _aDistribution patterns of native freshwater fishes in Patagonia - Argentina - / Claudio Baigún, Ricardo Ferriz |
| 264 | 1 | _c2006 | |
| 300 | _a9 páginas | ||
| 500 | _aDisponible en caja 16 no 27 de INICNE | ||
| 520 | _aThe Patagonian ichthyofauna comprises a total of 29 species. This low species richness contrasts with other cold-temperate regions of the southern hemisphere. The fauna includes only 15 species native to the Patagonian Province and seven to the Brazilian Province. Knowledge of native fish fauna diversity patterns is still fragmentary. Based on extensive sampling during the IBOY initiative and also reviewing seminal and review literature, we provide an updated perspective of native freshwater fishes in Patagonia by describing and analyzing their distribution and occurrence across basins. The results show that species richness varies along latitude, with a maximum at the 38°–40° interval, principally due to the presence of Brazilian species inhabiting northern Patagonia. However, species numbers remained constant south of 48° latitude. We report extended distribution ranges for several species such as Diplomystes mesembrinus, Hatcheria macraei, Trichomycterus areolatus, and Odontesthes hatcheri, and also the new discovery of a Brazilian species (Corydoras paleatus) in the north of Patagonia. Cluster analysis based on presence-absence information revealed co-occurrence patterns at the level of basins, showing that only few species (Percichtys trucha, Odontesthes hatcheri, Hatcheria macraei, Galaxias platei, and G. maculatus) are ubiquitous. Restricted distribution and even endemism for the remaining species could be attributed to river drainage systems which influence dispersion ability, to the influence of past glaciation events, and impact by introduced salmonids in the last century. Future research therefore should be focused on distribution patterns of introduced species since they are an important component of present Patagonian fish assemblages. Also, efforts should be devoted to understanding how diversity patterns of freshwater fish communities vary across scales and how community changes are relevant for native species conservation | ||
| 650 | 4 |
_aHabitat _97705 |
|
| 650 | 4 |
_aDiversity _9134464 |
|
| 650 | 4 |
_aDiversidad _97246 |
|
| 650 | 4 |
_aDistribution _9147379 |
|
| 650 | 4 |
_aArgentina _94258 |
|
| 650 | 4 |
_aPatagonia _97308 |
|
| 650 | 4 |
_aInland Waters _9117440 |
|
| 650 | 4 |
_aPeces de Agua Dulce _96471 |
|
| 650 | 4 |
_aFreshwater Fish _9117439 |
|
| 650 | 4 |
_aDistribución _925887 |
|
| 942 | _cART | ||
| 035 | _a(INICN)36133 | ||
| 001 | 234705 | ||
| 999 |
_c234705 _d234705 |
||
| 040 |
_aAR-ReUNN _bspa _cAR-ReUNN _eaacr2 |
||