Sökning: "Wels catfish"
Hittade 4 uppsatser innehållade orden Wels catfish.
1. A recipe for fish and SNPs : Filling the blanks for conservation genomics of Swedish wels catfish (Silurus glanis) populations
Master-uppsats, Uppsala universitet/Institutionen för ekologi och genetik; Uppsala universitet/Institutionen för biologisk grundutbildningSammanfattning : Swedish populations of Wels catfish (Silurus glanis) experienced severe declines during the 19th and 20th centuries. The main causes for the decline were loss of suitable spawning habitat and fragmentation of populations. Currently, three native and two reintroduced populations remain in Sweden. LÄS MER
2. Habitat Preference and Activity Pattern of Wels Catfish (Silurus glanis) at its Northernmost Distribution Area.
Master-uppsats, Linköpings universitet/Institutionen för fysik, kemi och biologiSammanfattning : Knowledge of Wels Catfish (Silurus glanis) at its northernmost distribution area is limited on even basic behavioral characteristics, such as habitat preferences and activity patterns. It has thus proven difficult to aid the species in any predictable way. LÄS MER
3. Defining habitat demands of Wels catfish (Silurus glanis) in a Swedish lake : a look into muddy waters
Master-uppsats, SLU/Dept. Of Aquatic ResourcesSammanfattning : The wels catfish (Silurus glanis) is a rare species in Swedish waters, it demands higher water temperatures than most lakes and rivers can offer. One of the few locations with naturally occurring wels catfish in Sweden is Lake Båven, situated about an hour and a half south of Stockholm, in the county of Södermanland. LÄS MER
4. Sampling methods of the wels catfish (Silurus glanis) in freshwater lakes : management of a vulnerable species
Master-uppsats, SLU/Dept. Of Aquatic ResourcesSammanfattning : Sweden hosts the northernmost natural population of wels catfish (Silurus glanis) in the world. The populations of the species decreased severely in the 20th century, mainly due to different sources of anthropogenic impact. LÄS MER