Papers by Martin B Hebsgaard
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Geology, 2005
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Journal of Zoological Systematics and Evolutionary Research, Aug 1, 2008
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Systematic Entomology, Oct 1, 2004
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Journal of Molecular Evolution, Dec 1, 2006
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Molecular Phylogenetics and Evolution, Dec 1, 2006
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MorphoBank datasets, Jun 30, 2020
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Molecular Phylogenetics and Evolution, Mar 1, 2023
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Cladistics, Apr 29, 2019
Climate fluctuations and tectonic reconfigurations associated with environmental changes play lar... more Climate fluctuations and tectonic reconfigurations associated with environmental changes play large roles in determining patterns of adaptation and diversification, but studies documenting how such drivers have shaped the evolutionary history and diversification dynamics of limnic organisms during the Mesozoic are scarce. Members of the heteropteran infraorder Nepomorpha, or aquatic bugs, are ideal for testing the effects of these determinants on their diversification pulses because most species are confined to aquatic environments during their entire life. The group has a relatively mature taxonomy and is well represented in the fossil record. We investigated the evolution of Nepomorpha based on phylogenetic analyses of morphological and molecular characters sampled from 115 taxa representing all 13 families and approximately 40% of recognized genera. Our results were largely congruent with the phylogenetic relationships inferred from morphology. A divergence dating analysis indicated that Nepomorpha began to diversify in the late Permian (approximately 263 Ma), and diversification analyses suggested that palaeoecological opportunities probably promoted lineage diversification in this group.
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Insect Science, Oct 20, 2011
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Science, Dec 22, 2006
Recent molecular evidence suggests that crustaceans may have successfully invaded land as insects.
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Systematic Biology, Oct 5, 2009
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Proceedings of the National Academy of Sciences of the United States of America, 2008
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Springer eBooks, Oct 30, 2008
In early years, the field of ancient DNA was largely a race on breaking age boundaries resulting ... more In early years, the field of ancient DNA was largely a race on breaking age boundaries resulting in outrageous reports that later proved due to contamination. An improved understanding of the processes responsible for DNA degradation and the effects of damage on ancient DNA templates and contamination risk have started providing a more solid basis for research. However, the field
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Functional Ecology, 2004
Summary The relationship between heat shock protein Hsp70 expression level and the duration of he... more Summary The relationship between heat shock protein Hsp70 expression level and the duration of heat‐induced male sterility was investigated in four populations of Drosophila buzzatii Patterson and Wheeler. The effect of heat hardening on the duration of sterility was further examined after flies developed at either 25 or 31 °C. In addition, Hsp70 expression was measured in testes after development at three different thermal regimes. Four main hypotheses were tested: (i) Hsp70 is expressed in testes of D. buzzatii males even at non‐stressful temperatures, and the level of expression increases with increasing rearing temperature. (ii) Hsp70 expression level differs between populations and is negatively correlated with the duration of poststress sterility. (iii) Experimentally induced Hsp70 expression at the pupal stage shortens the sterility period of flies reared above the temperature threshold of sterility. (iv) In contrast, a hardening treatment during the pupal stage of flies rear...
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Molecular Phylogenetics and Evolution
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permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided t... more permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
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Polar Science, 2010
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Papers by Martin B Hebsgaard