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1 October 2005 Phylogenetic Analyses of Fat Body Endosymbionts Reveal Differences in Invasion Times of Blaberid Wood-feeding Cockroaches (Blaberidae: Panesthiinae) into the Japanese Archipelago
Kiyoto Maekawa, Masahiro Kon, Tadao Matsumoto, Kunio Araya, Nathan Lo
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Abstract

Cockroaches have endosymbiotic bacteria in their fat bodies. Recent molecular phylogenetic analyses on both hosts and endosymbionts have revealed that co-evolution has occurred throughout the history of cockroaches and termites. Co-cladogenesis was also shown among closely related taxa (woodroach genus Cryptocercus; Cryptocercidae), and thus endosymbiont data are likely to be useful for biogeographical analyses. To test the possibility of co-cladogenesis among inter- and intraspecific taxa, as well as the utility of endosymbiont data for inferring biogeographical scenarios, we analyzed rRNA genes of endosymbionts of Japanese and Taiwanese Panesthiinae (Salganea and Panesthia; Blaberidae), on which phylogenetic analyses previously had been performed based on the mitochondrial genes. Statistical analyses on the topologies inferred from both endosymbiont and host mitochondria genes showed that co-cladogenesis has occurred. The endosymbiont sequences examined appear to have evolved in a clock-like manner, and their rate of evolution based on the host fossil data showed a major difference in the time of invasion of the two Japanese genera, that is congruent with the recent analyses of their mitochondrial genes.

Kiyoto Maekawa, Masahiro Kon, Tadao Matsumoto, Kunio Araya, and Nathan Lo "Phylogenetic Analyses of Fat Body Endosymbionts Reveal Differences in Invasion Times of Blaberid Wood-feeding Cockroaches (Blaberidae: Panesthiinae) into the Japanese Archipelago," Zoological Science 22(10), 1061-1067, (1 October 2005). https://doi.org/10.2108/zsj.22.1061
Received: 18 June 2005; Accepted: 1 August 2005; Published: 1 October 2005
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