@article{HeilerNahavandiAlbrecht2010,
  author    = {Heiler, Katharina C. M. and Nahavandi, Nahid and Albrecht, Christian},
  title     = {A new invasion into an Ancient lake : the invasion history of the dreissenid mussel Mytilopsis leucophaeata (Conrad, 1831) and its first record in the Caspian sea},
  issn      = {0076-2997},
  doi       = {10.4002/040.053.0112},
  year      = {2010},
  language  = {en}
}
@phdthesis{Nahavandi2011,
  author    = {Nahavandi, Nahid},
  title     = {Genetic and morphological analysis on the evolution of the Ponto-Caspian amphipod Pontogammarus maeoticus},
  address   = {Potsdam},
  pages     = {54 S.},
  year      = {2011},
  language  = {en}
}
@article{NahavandiKetmaierPlathetal.2013,
  author    = {Nahavandi, Nahid and Ketmaier, Valerio and Plath, Martin and Tiedemann, Ralph},
  title     = {Diversification of Ponto-Caspian aquatic fauna - morphology and molecules retrieve congruent evolutionary relationships in Pontogammarus maeoticus (Amphipoda: Pontogammaridae)},
  series = {Molecular phylogenetics and evolution},
  volume    = {69},
  journal   = {Molecular phylogenetics and evolution},
  number    = {3},
  publisher = {Elsevier},
  address   = {San Diego},
  issn      = {1055-7903},
  doi       = {10.1016/j.ympev.2013.05.021},
  pages     = {1063 -- 1076},
  year      = {2013},
  abstract  = {The geological history of the Ponto-Caspian region, with alternating cycles of isolation and reconnection among the three main basins (Black and Azov Seas, and the more distant Caspian Sea) as well as between them and the Mediterranean Sea, profoundly affected the diversification of its aquatic fauna, leading to a high degree of endemism. Two alternative hypotheses on the origin of this amazing biodiversity have been proposed, corresponding to phases of allopatric separation of aquatic fauna among sea basins: a Late Miocene origin (10-6 MYA) vs. a more recent Pleistocene ancestry (<2 MYA). Both hypotheses support a vicariant origin of (1) Black + Azov Sea lineages on the one hand, and (2) Caspian Sea lineages on the other. Here, we present a study on the Ponto-Caspian endemic amphipod Pontogammarus maeoticus. We assessed patterns of divergence based on (a) two mitochondrial and one nuclear gene, and (b) a morphometric analysis of 23 morphological traits in 16 populations from South and West Caspian Sea, South Azov Sea and North-West Black Sea. Genetic data indicate a long and independent evolutionary history, dating back from the late Miocene to early Pleistocene (6.6-1.6 MYA), for an unexpected, major split between (i) a Black Sea clade and (ii) a well-supported clade grouping individuals from the Caspian and Azov Seas. Absence of shared haplotypes argues against either recent or human-mediated exchanges between Caspian and Azov Seas. A mismatch distribution analysis supports more stable population demography in the Caspian than in the Black Sea populations. Morphological divergence largely followed patterns of genetic divergence: our analyses grouped samples according to the basin of origin and corroborated the close phylogenetic affinity between Caspian and Azov Sea lineages. Altogether, our results highlight the necessity of careful (group-specific) evaluation of evolutionary trajectories in marine taxa that should certainly not be inferred from the current geographical proximity of sea basins alone. (C) 2013 Elsevier Inc. All rights reserved.},
  language  = {en}
}
@article{NahavandiKetmaierTiedemann2012,
  author    = {Nahavandi, Nahid and Ketmaier, Valerio and Tiedemann, Ralph},
  title     = {Intron structure of the elongation factor 1-alpha gene in the ponto-caspian amphipod pontogammarus maeoticus (Sowinsky, 1894) and its phylogeographic utility},
  series = {Journal of crustacean biology},
  volume    = {32},
  journal   = {Journal of crustacean biology},
  number    = {3},
  publisher = {Brill},
  address   = {San Antonio},
  issn      = {0278-0372},
  doi       = {10.1163/193724012X626584},
  pages     = {425 -- 433},
  year      = {2012},
  abstract  = {We tested the utility of a 230 base pair intron fragment of the highly conserved nuclear gene Elongation Factor 1-alpha (EF1-alpha) as a proper marker to reconstruct the phylogeography of the marine amphipod Pontogammarus maeoticus (Sowinsky, 1894) from the Caspian and Black Seas. As a prerequisite for further analysis, we confirmed by Southern blot analysis that EF1-alpha is encoded at a single locus in P. maeoticus. We included 15 populations and 60 individuals in the study. Both the phylogeny of the 27 unique alleles found and population genetic analyses revealed a significant differentiation between populations from the aforementioned sea basins. Our results are in remarkable agreement with recent studies on a variety of species from the same area, which invariably support a major phylogeographic break between the Caspian and Black Seas. We thus conclude that our EF1-alpha intron is an informative marker for phylogeographic studies in amphipods at the shallow population level.},
  language  = {en}
}
@article{NahavandiPlathTiedemannetal.2011,
  author    = {Nahavandi, Nahid and Plath, Martin and Tiedemann, Ralph and Mirzajani, Ali R.},
  title     = {Sexual and natural selection on morphological traits in a marine amphipod, Pontogammarus maeoticus (Sowinsky, 1894)},
  series = {Marine biology research},
  volume    = {7},
  journal   = {Marine biology research},
  number    = {2},
  publisher = {Taylor \& Francis Group},
  address   = {Oslo},
  issn      = {1745-1000},
  doi       = {10.1080/17451001003713589},
  pages     = {135 -- 146},
  year      = {2011},
  abstract  = {Sexual selection often leads to sexual dimorphism, where secondary sexual traits are more expressed in the male sex. This may be due, for example, to increased fighting or mate-guarding abilities of males expressing those traits. We investigated sexually dimorphic traits in four populations of a marine amphipod, Pontogammarus maeoticus (Gammaridea: Pontogammaridae), the most abundant amphipod species in the sublittoral zone along the southern shoreline of the Caspian Sea. Male amphipods are typically larger in body size than females, and have relatively larger posterior gnathopods and antennae. However, it remains to be studied for most other body appendages whether or not, and to what extent, they are sexually dimorphic. Using Analysis of Covariance (ANCOVA), we compared the relationships between body size and trait expression for 35 metric characters between males and females, and among the four populations examined by performing three different Discriminant Function Analyses (DFA). We detected several thus far undescribed sexual dimorphic traits such as the seventh peraeopods or the epimeral plates. We also found that the size of the propodus of the first and second gnathopods increases with increasing body size, and this allometric increase was stronger in males than in females. Finally, we found that the degree of sexual dimorphism in the expression of the width of the third epimeral plate varies across sites, suggesting that differences in ecology might affect the strength of sexual selection in different populations.},
  language  = {en}
}