Post details: On research into the evolutionary origins of insects

12/22/06

Permalinkby 07:17:28 am, Categories: Literature - Articles, 341 words   English (UK)

On research into the evolutionary origins of insects

Crustaceans are found as marine organisms in Cambrian rocks. Hexapods are documented in freshwater and terrestrial environments, but no earlier than the Devonian. “A key problem is the almost complete absence of fossils that connect hexapods to the other major arthropod subphyla”, that is Crustacea, Myriapoda and Chelicerata. In the absence of fossilized transitional forms, there are few constraints for theories of insect evolution and “hexapods have been phylogenetically linked to all of these major arthropod taxa”. Recent research, involving “morphological and molecular-based studies” has concluded “that hexapods originated within the crustaceans rather than as a sister group”. It claims this makes sense of several lines of evidence and there is clearly a desire to have an evolutionary story.
What makes this science rather than speculation? Reasoned argument + critical thought + circumstantial evidence might be characteristics used to justify the legitimacy of this work as science. However, there is very little primary data, and very little scope for the testing of hypotheses and for falsification. There is no benefit to humanity in sight. All the common objections to ID as science (except for one) apply to this research. And ID has amply demonstrated the use of reasoned argument + critical thought + circumstantial evidence. What objection is the exception? It is that all causation within science is natural. That’s the real stumbling block. But is not a problem for science. It is a problem for secularized science.

The Origin of Insects
Henrik Glenner, Philip Francis Thomsen, Martin Bay Hebsgaard, Martin Vinther Sorensen, and Eske Willerslev
Science 314, 22 December 2006: 1883-1884.

First para: Although hexapods--those arthropods having six legs, including insects--are the most diverse group of contemporary animals in terms of biological niches and number of species, their origin is highly debated. A key problem is the almost complete absence of fossils that connect hexapods to the other major arthropod subphyla, namely Crustacea, Myriapoda (such as centipedes and millipedes), and Chelicerata (such as scorpions and spiders). Over the years, hexapods (insects, springtails, proturnas, and diplurans) have been phylogenetically linked to all of these major arthropod taxa (1).

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