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Poole, J. R.

Publications and source records attributed to Poole, J. R..

2 recordsLinked to original sources

The herpetofauna of Despotiko Island (Cyclades, Greece)

The Aegean islands are a known hotspot for herpetofauna and have been extensively studied in this area. However, there are still numerous islands that lack this research. This includes the uninhabited islet of Despotiko found in the Paros archipelago, Cyclades. It is known for its importance in archaeology, which in turn attracts tourism. However, there is not yet a complete understanding on the presence of herpetofauna there, with the last published records written in 1977. In an effort to address this, a combination of past ad-hoc sightings and visual surveys were carried out during summer 2024. These yielded two new records of reptile species, Eryx jaculus and Lacerta citrovittata. Furthermore, the enclosed archaeological site had greater reptile diversity and richness than outside the site. This highlights the potential importance of the archaeological site as a key reptile habitat. Our findings help to improve our understanding of reptilian diversity in the archipelago, providing avenues for further research into the potential interactions between archaeological sites and reptile diversity.

ecology↗

The RAG transposon is active through the deuterostome evolution and domesticated in jawed vertebrates.

RAG1 and RAG2 are essential subunits of the V(D)J recombinase required for the generation of the variability of antibodies and T-cell receptors in jawed vertebrates. It was demonstrated that the amphioxus homologue of RAG1-RAG2 is encoded in an active transposon, belonging to the transposase DDE superfamily. The data provided supports to the possibility that the RAG transposon has been active through the deuterostome evolution and is still active in several lineages. The RAG transposon corresponds to several families present in deuterostomes. RAG1-RAG2 V(D)J recombinase evolved from one of them, partially due to the new ability of the transposon to interact with the cellular reparation machinery. Considering the fact that the RAG transposon survived millions of years in many different lineages, in multiple copies, and that DDE transposases evolved their association with proteins involved in repair mechanisms, we propose that the apparition of V(D)J recombination machinery could be a predictable genetic event.

immunology↗