@misc{SchnitzlerPinzoneAutenriethetal.2018,
  author    = {Schnitzler, Joseph G. and Pinzone, Marianna and Autenrieth, Marijke and van Neer, Abbo and IJsseldijk, Lonneke L. and Barber, Jonathan L. and Deaville, Rob and Jepson, Paul and Brownlow, Andrew and Schaffeld, Tobias and Thom{\´e}, Jean-Pierre and Tiedemann, Ralph and Das, Krishna and Siebert, Ursula},
  title     = {Inter-individual differences in contamination profiles as tracer of social group association in stranded sperm whales},
  series = {Postprints der Universit{\"a}t Potsdam Mathematisch-Naturwissenschaftliche Reihe},
  journal   = {Postprints der Universit{\"a}t Potsdam Mathematisch-Naturwissenschaftliche Reihe},
  number    = {692},
  issn      = {1866-8372},
  doi       = {10.25932/publishup-42652},
  url       = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-426525},
  pages     = {11},
  year      = {2018},
  abstract  = {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.},
  language  = {en}
}
@article{SchnitzlerPinzoneAutenriethetal.2018,
  author    = {Schnitzler, Joseph G. and Pinzone, Marianna and Autenrieth, Marijke and van Neer, Abbo and IJsseldijk, Lonneke L. and Barber, Jonathan L. and Deaville, Rob and Jepson, Paul and Brownlow, Andrew and Schaffeld, Tobias and Thome, Jean-Pierre and Tiedemann, Ralph and Das, Krishna and Siebert, Ursula},
  title     = {Inter-individual differences in contamination profiles as tracer of social group association in stranded sperm whales},
  series = {Scientific reports},
  volume    = {8},
  journal   = {Scientific reports},
  publisher = {Nature Publ. Group},
  address   = {London},
  issn      = {2045-2322},
  doi       = {10.1038/s41598-018-29186-z},
  pages     = {11},
  year      = {2018},
  abstract  = {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.},
  language  = {en}
}
@misc{AutenriethErnstDeavilleetal.2018,
  author    = {Autenrieth, Marijke and Ernst, Anja and Deaville, Rob and Demaret, Fabien and Ijsseldijk, Lonneke L. and Siebert, Ursula and Tiedemann, Ralph},
  title     = {Putative origin and maternal relatedness of male sperm whales (Physeter macrocephalus) recently stranded in the North Sea},
  series = {Mammalian biology = Zeitschrift f{\"u}r S{\"a}ugetierkunde},
  volume    = {88},
  journal   = {Mammalian biology = Zeitschrift f{\"u}r S{\"a}ugetierkunde},
  publisher = {Elsevier},
  address   = {M{\"u}nchen},
  issn      = {1616-5047},
  doi       = {10.1016/j.mambio.2017.09.003},
  pages     = {156 -- 160},
  year      = {2018},
  abstract  = {The globally distributed sperm whale (Physeter macrocephalus) has a partly matrilineal social structure with predominant male dispersal. At the beginning of 2016, a total of 30 male sperm whales stranded in five different countries bordering the southern North Sea. It has been postulated that these individuals were on a migration route from the north to warmer temperate and tropical waters where females live in social groups. By including samples from four countries (n = 27), this event provided a unique chance to genetically investigate the maternal relatedness and the putative origin of these temporally and spatially co-occuring male sperm whales. To utilize existing genetic resources, we sequenced 422 bp of the mitochondrial control region, a molecular marker for which sperm whale data are readily available from the entire distribution range. Based on four single nucleotide polymorphisms (SNPs) within the mitochondrial control region, five matrilines could be distinguished within the stranded specimens, four of which matched published haplotypes previously described in the Atlantic. Among these male sperm whales, multiple matrilineal lineages co-occur. We analyzed the population differentiation and could show that the genetic diversity of these male sperm whales is comparable to the genetic diversity in sperm whales from the entire Atlantic Ocean. We confirm that within this stranding event, males do not comprise maternally related individuals and apparently include assemblages of individuals from different geographic regions. (c) 2017 Deutsche Gesellschaft fur Saugetierkunde. Published by Elsevier GmbH. All rights reserved.},
  language  = {en}
}