Isolation mechanisms in closely related grasshopper species Chorthippus albomarginatus and Ch. oschei (Orthoptera: Acrididae)

@article{citeulike:2284843, abstract = {Abstract\ \ Two closely related grasshopper species Chorthippus albomarginatus and Ch. oschei are known to hybridize in the narrow contact zone at the territory of Ukraine and Moldova. Different isolaton mechanisms providing reproductive isolation between the two species were studied. In choice mating experiments, females of the both species demonstrated a strong assortative mating (80–90\% preference for the conspecific males). Comparison of the parental and hybrid viability revealed a reduced hatching and increased larval mortality in F1 and F2 hybrids. In choice mating experiments, the hybrid females mated less assortatively than the parental females. An assymmetry was found in mating preferences and in viability of hybrids. The results demonstrate the existence of pre-and post-mating isolation between Ch. albomarginatus and Ch. oschei. A possible fate of the hybrid zone is discussed.}, author = {Vedenina, V. and Kulygina, N. and Panyutin, A. }, citeulike-article-id = {2284843}, doi = {http://dx.doi.org/10.1134/S0013873807030037}, journal = {Entomological Review}, keywords = {chorthippus, courtship, grasshopper, hybrids, phenotype, song, speciation}, month = {June}, number = {3}, pages = {263--272}, posted-at = {2008-01-24 14:08:21}, priority = {2}, title = {Isolation mechanisms in closely related grasshopper species Chorthippus albomarginatus and Ch. oschei (Orthoptera: Acrididae)}, url = {http://dx.doi.org/10.1134/S0013873807030037}, volume = {87}, year = {2007} }

TY - JOUR ID - citeulike:2284843 L3 - citeulike-article-id:2284843 TI - Isolation mechanisms in closely related grasshopper species Chorthippus albomarginatus and Ch. oschei (Orthoptera: Acrididae) JF - Entomological Review VL - 87 IS - 3 SP - 263 EP - 272 N2 - Abstract  Two closely related grasshopper species Chorthippus albomarginatus and Ch. oschei are known to hybridize in the narrow contact zone at the territory of Ukraine and Moldova. Different isolaton mechanisms providing reproductive isolation between the two species were studied. In choice mating experiments, females of the both species demonstrated a strong assortative mating (80–90% preference for the conspecific males). Comparison of the parental and hybrid viability revealed a reduced hatching and increased larval mortality in F1 and F2 hybrids. In choice mating experiments, the hybrid females mated less assortatively than the parental females. An assymmetry was found in mating preferences and in viability of hybrids. The results demonstrate the existence of pre-and post-mating isolation between Ch. albomarginatus and Ch. oschei. A possible fate of the hybrid zone is discussed. KW - chorthippus KW - courtship KW - grasshopper KW - hybrids KW - phenotype KW - song KW - speciation AU - Vedenina, V AU - Kulygina, N AU - Panyutin, A PY - 2007/06/26/ UR - http://dx.doi.org/10.1134/S0013873807030037 ER -