Sökning: "Cyprinidae"

Visar resultat 1 - 5 av 6 avhandlingar innehållade ordet Cyprinidae.

  1. 1. A phylogenetic analysis of rasborin fishes (Teleostei, Cyprinidae)

    Författare :Te-Yu Liao; Sven Kullander; Paul Skelton; Stockholms universitet; []
    Nyckelord :Rasbora; Chedrina; Danionina; Danionini; Rasborini; Danioninae; Opsariichthyinae; Cyprinidae; Cypriniformes; phylogeny; systematics; Africa; Asia; Systematic Zoology; zoologisk systematik och evolutionsforskning;

    Sammanfattning : The Danioninae (sensu lato) were until recently considered to be a paraphyletic group, comprising about 200 species and distributed over Africa and southern and eastern Asia. There was no morphological diagnosis for the Danioninae, and also the composition of the subfamily, and the interrelationships of included genera have been contentious. LÄS MER

  3. 2. Biodiversity in Swedish Cyprinid Fish: Insights Into Processes of Divergence

    Författare :Marnie H Demandt; Mats Björklund; Erik Petersson; Brent Emerson; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; speciation; hybridization; bottleneck; genetic drift; phylogeny; speciation rates; common bream; white bream; roach; Swedish cyprinid fish; Cyprinidae; Biology; Biologi;

    Sammanfattning : Uncovering and understanding the processes that have led to the biological diversity we observe today are of fundamental interest in biology. Since direct observation of speciation is usually impossible, knowledge about the processes behind species formation can be gathered by studying mutations, natural/sexual selection, and genetic drift. LÄS MER

  4. 3. Phylogeny and species diversity of the South and Southeast Asian cyprinid genus Danio Hamilton (Teleostei, Cyprinidae)

    Författare :Fang Fang Kullander; Richard Vari; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Benfiskar; karpfiskar; fylogeni; Sydasien; Sydostasien; Systematic Zoology; zoologisk systematik och evolutionsforskning;

    Sammanfattning : Danio Hamilton, in the wide sense, consists of 66 nominal species, of which about 45 are valid. Four species, viz. D. kakhienensis, D. LÄS MER

  5. 4. Phylogenetic analyses of the genus Rasbora (Teleostei: Cyprinidae) and its systematic postition within the cyprinid subfamily Danioninae (Actinopterygii: Cypriniformes)

    Författare :Te-Yu Liao; Stockholms universitet; []
    Nyckelord :;

    Sammanfattning : .... LÄS MER

  7. 5. Fish predation by the great cormorant (Phalacrocorax carbo sinensis) : analytical basis for ecosystem approaches

    Författare :Maria Ovegård; Sveriges lantbruksuniversitet; Sveriges lantbruksuniversitet; []
    Nyckelord :LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES;

    Sammanfattning : This thesis concerns the diet of a piscivorus top predator, the Great Cormorant (Phalacrocorax carbo sinensis), in the Baltic Sea. The Great Cormorant has increased exponentially in numbers during the last decades. This has resulted in a human-cormorant conflict because of its perceived competition with fisheries and negative impact on ecosystems. LÄS MER