TY  - JOUR
A1  - Bacskai-Atkari, Julia
T1  - Cyclical change in Hungarian comparatives
JF  - Diachronica
N2  - This paper examines cyclical changes in comparative subclauses, showing how operators are reanalysed as complementisers via the general mechanism of the relative cycle, and how this is related to whether certain lexical elements have to be deleted at the left periphery. I also show that only operators appearing without a lexical XP can be grammaticalised, which follows from the nature of the formal features associated with the various operator elements. Though the main focus is on Hungarian historical data, the framework can be applied to other languages too, such as German and Italian, since the changes stem from general principles of economy.
KW  - Comparative Deletion
KW  - comparative subclause
KW  - complementiser combinations
KW  - economy
KW  - left periphery
KW  - reanalysis
KW  - relative cycle
KW  - reinforcement
Y1  - 2014
U6  - https://doi.org/10.1075/dia.31.4.01bac
SN  - 0176-4225
SN  - 1569-9714
VL  - 31
IS  - 4
SP  - 465
EP  - 505
PB  - Benjamins
CY  - Amsterdam
ER  - 
TY  - JOUR
A1  - Plath, Martin
A1  - Pfenninger, Markus
A1  - Lerp, Hannes
A1  - Riesch, Rüdiger
A1  - Eschenbrenner, Christoph
A1  - Slattery, Patrick A.
A1  - Bierbach, David
A1  - Herrmann, Nina
A1  - Schulte, Matthias
A1  - Arias-Rodriguez, Lenin
A1  - Rimber Indy, Jeane
A1  - Passow, Courtney
A1  - Tobler, Michael
T1  - Genetic differentiation and selection against migrants in evolutionarily replicated extreme environments
JF  - Evolution
N2  - We investigated mechanisms of reproductive isolation in livebearing fishes (genus Poecilia) inhabiting sulfidic and nonsulfidic habitats in three replicate river drainages. Although sulfide spring fish convergently evolved divergent phenotypes, it was unclear if mechanisms of reproductive isolation also evolved convergently. Using microsatellites, we found strongly reduced gene flow between adjacent populations from different habitat types, suggesting that local adaptation to sulfidic habitats repeatedly caused the emergence of reproductive isolation. Reciprocal translocation experiments indicate strong selection against immigrants into sulfidic waters, but also variation among drainages in the strength of selection against immigrants into nonsulfidic waters. Mate choice experiments revealed the evolution of assortative mating preferences in females from nonsulfidic but not from sulfidic habitats. The inferred strength of sexual selection against immigrants (RIs) was negatively correlated with the strength of natural selection (RIm), a pattern that could be attributed to reinforcement, whereby natural selection strengthens behavioral isolation due to reduced hybrid fitness. Overall, reproductive isolation and genetic differentiation appear to be replicated and direct consequences of local adaptation to sulfide spring environments, but the relative contributions of different mechanisms of reproductive isolation vary across these evolutionarily independent replicates, highlighting both convergent and nonconvergent evolutionary trajectories of populations in each drainage.
KW  - Ecological speciation
KW  - isolation-by-adaptation
KW  - local adaptation
KW  - Poecilia mexicana
KW  - reinforcement
KW  - sexual isolation
Y1  - 2013
U6  - https://doi.org/10.1111/evo.12133
SN  - 0014-3820
VL  - 67
IS  - 9
SP  - 2647
EP  - 2661
PB  - Wiley-Blackwell
CY  - Hoboken
ER  -