Fluctuating and directional asymmetry of the blue mussel (Mytilus edulis): improving methods of morphological analysis to explore species performance at the northern border of its range

D. Lajus, M. Katolikova, P. Strelkov, H. Hummel

Результат исследований: Научные публикации в периодических изданияхстатья

8 Цитирования (Scopus)

Аннотация

In this work we examined morphological variation at different levels to study performance and population structuring of the blue mussel Mytilus edulis. Our objectives were: (i) to develop an integrated technique for analyzing morphological variation in blue mussels and, based on this technique; (ii) to perform a morphometric description of mussels from the northern part of their range; and (iii) to verify the hypothesis that populations at the outer range of their distribution have reduced performance due to harsh climatic conditions. Means, directional asymmetry (i.e., systematic differences between left and right structures), fluctuating asymmetry (random deviations from perfect symmetry, a measure of developmental instability), factorial variation (difference between total variance and variance of fluctuating asymmetry, an indirect index of genotypic variation), and measurement error were examined for 14 bilateral characters of muscle scars on mussel shells. Also, we analyzed one non-bilateral character. F
Язык оригиналаанглийский
Страницы (с-по)488-514
ЖурналSymmetry
Номер выпуска7
DOI
СостояниеОпубликовано - 2015

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