SwePub
Sök i SwePub databas

  Utökad sökning

Träfflista för sökning "hsv:(NATURVETENSKAP) hsv:(Biologiska vetenskaper) hsv:(Mikrobiologi) srt2:(2005-2009)"

Sökning: hsv:(NATURVETENSKAP) hsv:(Biologiska vetenskaper) hsv:(Mikrobiologi) > (2005-2009)

  • Resultat 1-2 av 2
Sortera/gruppera träfflistan
   
NumreringReferensOmslagsbildHitta
1.
  • Faurby, Sören, et al. (författare)
  • Variation in anhydrobiotic survival of two eutardigrade morphospecies : a story of cryptic species and their dispersal
  • 2008
  • Ingår i: Journal of Zoology. - 0952-8369 .- 1469-7998. ; 275:2, s. 139-145
  • Tidskriftsartikel (refereegranskat)abstract
    • Studies of geographic variation in anhydrobiotic tolerance may increase our understanding of the population dynamics of terrestrial meiofauna and the relative importance of local adaptation and microhabitat niche separation. Although anhydrobiosis in tardigrades has been studied extensively, few studies have dealt with intraspecific variation in survival and none of these included genetic data to validate the intraspecific nature of the comparisons. Such data are necessary when working with meiofauna as cryptic species are common. We analysed the anhydrobiotic survival and genetic variation in cytochrome oxidase subunit I of two eutardigrades (Richtersius coronifer and Ramazzottius oberhaeuseri) from Italy and Sweden to detect possible local adaptation. Survival was analysed as a multidimensional contingency table and showed that anhydrobiotic survival was higher in Sweden for Ra. oberhaeuseri whereas no significant geographic variation was found for Ri. coronifer. Our genetic analysis indicated the coexistence of two cryptic species of Ra. oberhaeuseri in Italy, only one of which was found in Sweden. It could not be determined whether the variation in Ramazzottius is intra- or interspecific due to the presence of these cryptic species. We suggest that geographic variation in anhydrobiotic survival may be a general phenomenon in tardigrades but further research is necessary to determine the degree of intraspecific variation. The genetic analysis showed indications of long-term isolation of the individual populations of Ri. coronifer but recent dispersal in one of the cryptic species of Ramazzottius. We found higher survival in Ra. oberhaeuseri than in Ri. coronifer. These results indicate a possible coupling between anhydrobiotic survival and dispersal rate.
  •  
2.
  • Rehnstam-Holm, Ann-Sofi, 1959-, et al. (författare)
  • Vibrio-arter i sydsvenska vatten orsakade badsårsfeber : ökande frekvens av bakterierna, visar studier på musslor
  • 2009
  • Ingår i: Läkartidningen. - 0023-7205 .- 1652-7518. ; 106:7, s. 435-438
  • Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)abstract
    • Vibrios are autochthonous in estuarine and seawater environments, and have an important role in the decomposition of both particulate and dissolved organic matter. A considerable number of pathogenic strains have been described, including important human pathogens. Analyses of V. cholerae, V. parahaemolyticus and V. vulnificus genes in blue mussels (Mytilus edulis) from southern Sweden were conducted during summer-autumn 2006. 61% of the samples were positive for non-O1/O139 V. cholera (toxR positives), but all were negative for the choleratoxin gene ctx. 89% of the mussel samples contained V. parahaemolyticus and 61% of these were positive for the virulence genes tdh and trh. V. vulnificus were detected in 72% of the samples. Ongoing studies include analyses of Vibrio-phytoplankton interrelationships and survival of clinical Vibrio strains in the marine environment.
  •  
Skapa referenser, mejla, bekava och länka
  • Resultat 1-2 av 2
Typ av publikation
tidskriftsartikel (2)
Typ av innehåll
övrigt vetenskapligt/konstnärligt (1)
refereegranskat (1)
Författare/redaktör
Jönsson, K. Ingemar, ... (1)
Rehnstam-Holm, Ann-S ... (1)
Collin, Betty, 1976- (1)
Rebecchi, L (1)
Funch, P. (1)
Faurby, Søren (1)
Lärosäte
Högskolan Kristianstad (2)
Språk
Svenska (1)
Engelska (1)
Forskningsämne (UKÄ/SCB)
Naturvetenskap (2)

År

Kungliga biblioteket hanterar dina personuppgifter i enlighet med EU:s dataskyddsförordning (2018), GDPR. Läs mer om hur det funkar här.
Så här hanterar KB dina uppgifter vid användning av denna tjänst.

 
pil uppåt Stäng

Kopiera och spara länken för att återkomma till aktuell vy