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Biological Systematics has changed dramatically during the past 60 years from a handicraft or art to an accepted branch of science proper, due to the work of Willi Hennig, who was born in 1913. The scientific method of reconstructing phylogenetic relationships of organisms bases on Hennig's approach, the "Phylogenetic Systematics". The method is now so widely accepted and applied that it can firmly be regarded a paradigm, named 'cladistics'.
In contrast, the life and personality of its founder is remarkably little known in the scientific community. The present book offers a detailed biography of Willi Hennig, and traces the roots of his thinking from his schooldays until his death in 1976. Some outstanding academic teachers and friends of his are introduced, too.
The book offers an insight into the historical development of a 'scientific revolution', and highlights the life and the work of a 'cautious revolutioniser' in a Germany of dictatorship, war, and separation.
In contrast, the life and personality of its founder is remarkably little known in the scientific community. The present book offers a detailed biography of Willi Hennig, and traces the roots of his thinking from his schooldays until his death in 1976. Some outstanding academic teachers and friends of his are introduced, too.
The book offers an insight into the historical development of a 'scientific revolution', and highlights the life and the work of a 'cautious revolutioniser' in a Germany of dictatorship, war, and separation.
Author:
Biological Systematics has changed dramatically during the past 60 years from a handicraft or art to an accepted branch of science proper, due to the work of Willi Hennig, who was born in 1913. The scientific method of reconstructing phylogenetic relationships of organisms bases on Hennig's approach, the "Phylogenetic Systematics". The method is now so widely accepted and applied that it can firmly be regarded a paradigm, named 'cladistics'.
In contrast, the life and personality of its founder is remarkably little known in the scientific community. The present book offers a detailed biography of Willi Hennig, and traces the roots of his thinking from his schooldays until his death in 1976. Some outstanding academic teachers and friends of his are introduced, too.
The book offers an insight into the historical development of a 'scientific revolution', and highlights the life and the work of a 'cautious revolutioniser' in a Germany of dictatorship, war, and separation.
In contrast, the life and personality of its founder is remarkably little known in the scientific community. The present book offers a detailed biography of Willi Hennig, and traces the roots of his thinking from his schooldays until his death in 1976. Some outstanding academic teachers and friends of his are introduced, too.
The book offers an insight into the historical development of a 'scientific revolution', and highlights the life and the work of a 'cautious revolutioniser' in a Germany of dictatorship, war, and separation.
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Jumping tests with 39 individuals from eight alticine species were conducted, and the metafemoral spring of the species studied morphologically by scanning electron microscopy. An individual of Longitarsus anchusae reached a maximum jump length of 289 body lengths, and the remaining L. anchusae individuals performed remarkably longer jumps than individuals of other species. The 28 individuals of Altica cf. lythri (n = 2), Crepidodera aurata (n = 9), Crepidodera aurea (n = 1), Phyllotreta atra (n = 3), Phyllotreta nemorum (n = 7), and Psylliodes chrysocephala (n = 1) showed a linear relationship of maximum jump length and hind femur volume, which was used as a surrogate for muscle volume. No such relation was found in Aphthona coerulea (n = 8). It became clear that jumping performance in L. anchusae is determined by their elongated hind legs, while in the other species, the shape of the metafemoral spring contributes to the maximum jumping distance in a species-specific way. The relative length of the apical lobe of this organ probably plays a crucial role: the shorter this lobe, the greater the maximum distance jumped.