iBet uBet web content aggregator. Adding the entire web to your favor.
iBet uBet web content aggregator. Adding the entire web to your favor.



Link to original content: https://pubmed.ncbi.nlm.nih.gov/12028781/
Shifts in hexapod diversification and what Haldane could have said - PubMed Skip to main page content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.

Https

The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Access keys NCBI Homepage MyNCBI Homepage Main Content Main Navigation
. 2002 May 7;269(1494):969-74.
doi: 10.1098/rspb.2002.1957.

Shifts in hexapod diversification and what Haldane could have said

Peter J Mayhew  1
Affiliations

Shifts in hexapod diversification and what Haldane could have said

Peter J Mayhew. Proc Biol Sci. .

Abstract

Data on species richness and taxon age are assembled for the extant hexapod orders (insects and their six-legged relatives). Coupled with estimates of phylogenetic relatedness, and simple statistical null models, these data are used to locate where, on the hexapod tree, significant changes in the rate of cladogenesis (speciation-minus-extinction rate) have occurred. Significant differences are found between many successive pairs of sister taxa near the base of the hexapod tree, all of which are attributable to a shift in diversification rate after the origin of the Neoptera (insects with wing flexion) and before the origin of the Holometabola (insects with complete metamorphosis). No other shifts are identifiable amongst supraordinal taxa. Whilst the Coleoptera have probably diversified faster than either of their putative sister lineages, they do not stand out relative to other closely related clades. These results suggest that any Creator had a fondness for a much more inclusive clade than the Coleoptera, definitely as large as the Eumetabola (Holometabola plus bugs and their relatives), and possibly as large as the entire Neoptera. Simultaneous, hence probable causative events are discussed, of which the origin of wing flexion has been the focus of much attention.

PubMed Disclaimer

Similar articles

See all similar articles

Cited by

See all "Cited by" articles

References

    1. Proc Biol Sci. 1995 Jun 22;260(1359):329-33 - PubMed
    1. Philos Trans R Soc Lond B Biol Sci. 1994 May 28;344(1309):305-11 - PubMed
    1. Science. 1994 Jun 10;264(5165):1590-3 - PubMed
    1. J Mol Evol. 1998 Jul;47(1):93-108 - PubMed
    1. Science. 1998 Jul 24;281(5376):555-9 - PubMed

LinkOut - more resources