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Lemur diversity gene study

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Orkin et al 2024 reported,
“Within the past 2,000 years, lemurs underwent major declines in effective population size that corresponded to the timing of human population expansion in Madagascar. In multiple regions of the island, we identified chronological trajectories of inbreeding that are consistent across genera and species, suggesting localized effects of human activity. Our results show how the extraordinary diversity of these long-neglected, endangered primates has been influenced by ecological and anthropogenic factors.”

Figure 1. A lemur mother and her twin babies travel around like an opossum and here babies, surviving in the trees while dinosaurs were on the ground. ” data-image-caption=”

Figure 1. A lemur mother and her twin babies travel around like an opossum and here babies, surviving in the trees while dinosaurs were on the ground.

” data-medium-file=”https://pterosaurheresies.wordpress.com/wp-content/uploads/2022/06/lemur-twins588.jpg?w=300″ data-large-file=”https://pterosaurheresies.wordpress.com/wp-content/uploads/2022/06/lemur-twins588.jpg?w=584″ class=”size-full wp-image-69140″ src=”https://pterosaurheresies.wordpress.com/wp-content/uploads/2022/06/lemur-twins588.jpg” alt=”Figure 1. A lemur mother and her twin babies travel around like an opossum and here babies, surviving in the trees while dinosaurs were on the ground.” width=”584″ height=”483″ srcset=”https://pterosaurheresies.wordpress.com/wp-content/uploads/2022/06/lemur-twins588.jpg?w=584&h=483 584w, https://pterosaurheresies.wordpress.com/wp-content/uploads/2022/06/lemur-twins588.jpg?w=150&h=124 150w, https://pterosaurheresies.wordpress.com/wp-content/uploads/2022/06/lemur-twins588.jpg?w=300&h=248 300w, https://pterosaurheresies.wordpress.com/wp-content/uploads/2022/06/lemur-twins588.jpg 588w” sizes=”(max-width: 584px) 100vw, 584px” />

Figure 1. A lemur mother and her twin babies travel around like an opossum and her babies, surviving in the trees while dinosaurs were on the ground. Cretaceous birds were not large enough to attack lemurs.

Actually when Madagascar became an island
it became a Cenozoic refugium for lemurs, a clade of basal-most primates that once spread across North America and probably the rest of the world during the Cretaceous. Maybe earlier. Lemurs are basal to bats and tree shrews, hedgehogs, moles and shrews… as well as the odd taxa leading to Stylinodon.

Talk about “extraordinary diversity”

Add taxa to your own cladogram to find this out for yourself.

References
Joseph D. Orkin et al (more than a dozen co-authors) 2024.
Ecological and anthropogenic effects on the genomic diversity of lemurs in Madagascar, Nature Ecology & Evolution. DOI: 10.1038/s41559-024-02596-1


Source: https://pterosaurheresies.wordpress.com/2025/01/10/lemur-diversity-gene-study/



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