TY  - GEN
A1  - Cahsan, Binia De
A1  - Kiemel, Katrin
A1  - Westbury, Michael V.
A1  - Lauritsen, Maike
A1  - Autenrieth, Marijke
A1  - Gollmann, Günter
A1  - Schweiger, Silke
A1  - Stenberg, Marika
A1  - Nyström, Per
A1  - Drews, Hauke
A1  - Tiedemann, Ralph
T1  - Southern introgression increases adaptive immune gene variability in northern range margin populations of Fire-bellied toad
T2  - Postprints der Universität Potsdam : Mathematisch-Naturwissenschaftliche Reihe
N2  - Northern range margin populations of the European fire-bellied toad (Bombina bombina) have rapidly declined during recent decades. Extensive agricultural land use has fragmented the landscape, leading to habitat disruption and loss, as well as eutrophication of ponds. In Northern Germany (Schleswig-Holstein) and Southern Sweden (Skåne), this population decline resulted in decreased gene flow from surrounding populations, low genetic diversity, and a putative reduction in adaptive potential, leaving populations vulnerable to future environmental and climatic changes. Previous studies using mitochondrial control region and nuclear transcriptome-wide SNP data detected introgressive hybridization in multiple northern B. bombina populations after unreported release of toads from Austria. Here, we determine the impact of this introgression by comparing the body conditions (proxy for fitness) of introgressed and nonintrogressed populations and the genetic consequences in two candidate genes for putative local adaptation (the MHC II gene as part of the adaptive immune system and the stress response gene HSP70 kDa). We detected regional differences in body condition and observed significantly elevated levels of within individual MHC allele counts in introgressed Swedish populations, associated with a tendency toward higher body weight, relative to regional nonintrogressed populations. These differences were not observed among introgressed and nonintrogressed German populations. Genetic diversity in both MHC and HSP was generally lower in northern than Austrian populations. Our study sheds light on the potential benefits of translocations of more distantly related conspecifics as a means to increase adaptive genetic variability and fitness of genetically depauperate range margin populations without distortion of local adaptation.
T3  - Zweitveröffentlichungen der Universität Potsdam : Mathematisch-Naturwissenschaftliche Reihe - 1177 
KW  - Bombina bombina
KW  - heat shock protein
KW  - introgression
KW  - major histocompatibility complex
KW  - scaled mass index
Y1  - 2021
U6  - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus4-523883
SN  - 1866-8372
IS  - 14
ER  - 
TY  - GEN
A1  - Schnitzler, Joseph G.
A1  - Pinzone, Marianna
A1  - Autenrieth, Marijke
A1  - van Neer, Abbo
A1  - IJsseldijk, Lonneke L.
A1  - Barber, Jonathan  L.
A1  - Deaville, Rob
A1  - Jepson, Paul
A1  - Brownlow, Andrew
A1  - Schaffeld, Tobias
A1  - Thomé, Jean-Pierre
A1  - Tiedemann, Ralph
A1  - Das, Krishna
A1  - Siebert, Ursula
T1  - Inter-individual differences in contamination profiles as tracer of social group association in stranded sperm whales
T2  - Postprints der Universität Potsdam Mathematisch-Naturwissenschaftliche Reihe
N2  - Ecological and physiological factors lead to different contamination patterns in individual marine mammals. The objective of the present study was to assess whether variations in contamination profiles are indicative of social structures of young male sperm whales as they might reflect a variation in feeding preferences and/or in utilized feeding grounds. We used a total of 61 variables associated with organic compounds and trace element concentrations measured in muscle, liver, kidney and blubber gained from 24 sperm whales that stranded in the North Sea in January and February 2016. Combining contaminant and genetic data, there is evidence for at least two cohorts with different origin among these stranded sperm whales; one from the Canary Island region and one from the northern part of the Atlantic. While genetic data unravel relatedness and kinship, contamination data integrate over areas, where animals occured during their lifetime. Especially in long-lived animals with a large migratory potential, as sperm whales, contamination data may carry highly relevant information about aggregation through time and space.
T3  - Zweitveröffentlichungen der Universität Potsdam : Mathematisch-Naturwissenschaftliche Reihe - 692 
KW  - porpoises phococena-phococena
KW  - North-sea
KW  - physeter-macrocephalus
KW  - Galapagos-Islands
KW  - harbor porpoises
KW  - cetacean strandings
KW  - aggregations
KW  - pollutants
KW  - behavior
KW  - mammals
Y1  - 2019
U6  - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus4-426525
SN  - 1866-8372
IS  - 692
ER  -