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Found 4 essays matching the above criteria.

  1. 1. A recipe for fish and SNPs : Filling the blanks for conservation genomics of Swedish wels catfish (Silurus glanis) populations

    University essay from Uppsala universitet/Institutionen för ekologi och genetik; Uppsala universitet/Institutionen för biologisk grundutbildning

    Author : Lars Littmann; [2022]
    Keywords : Catfish; Silurus glanis; Genomics; Genetics; Conservation; Mitochondrial; Whole-genome; NGS; Sweden;

    Abstract : 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. READ MORE

  3. 2. Habitat Preference and Activity Pattern of Wels Catfish (Silurus glanis) at its Northernmost Distribution Area.

    University essay from Linköpings universitet/Institutionen för fysik, kemi och biologi

    Author : Niklas Lindell; [2021]
    Keywords : Wels catfish; Silurus glanis; Conservation; Acoustic telemetry; Habitat preferences; Sweden; Activity pattern; Animal movemen;

    Abstract : 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. READ MORE

  4. 3. Defining habitat demands of Wels catfish (Silurus glanis) in a Swedish lake : a look into muddy waters

    University essay from SLU/Dept. Of Aquatic Resources

    Author : David Spange; [2018]
    Keywords : Wels catfish; Silurus glanis; Sweden; Spawning; Spawning habitats; acoustic camera; ARIS; telemetry;

    Abstract : 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. READ MORE

  5. 4. Sampling methods of the wels catfish (Silurus glanis) in freshwater lakes : management of a vulnerable species

    University essay from SLU/Dept. Of Aquatic Resources

    Author : David Östby; [2018]
    Keywords : sampling; gear; monitoring; Wels catfish; Silurus glanis; management; vulnerable spieces; electrofishing; acoustic camera; fyke nets; lake;

    Abstract : 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. READ MORE