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Negative correlation between mean female age at first birth and rates of molecular evolution in primates, with predictions of the reproductive age in early hominins

 
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Контент предоставлен MultiModal LLC and Multimodal LLC. Весь контент подкастов, включая выпуски, графику и описания подкастов, загружается и предоставляется непосредственно MultiModal LLC and Multimodal LLC или его партнером по платформе подкастов. Если вы считаете, что кто-то использует вашу работу, защищенную авторским правом, без вашего разрешения, вы можете выполнить процедуру, описанную здесь https://ru.player.fm/legal.
Link to bioRxiv paper: http://biorxiv.org/cgi/content/short/2020.08.09.232769v1?rss=1 Authors: Bajdek, P. Abstract: mtDNA-based phylogenetic trees of the order Primates were constructed by the minimum evolution (ME) and maximum likelihood (ML) methods. Branch lengths were compared with the mean female age at first birth in the taxa studied. Higher reproductive age in females triggers a lower number of generations through time and, on average, at the molecular level smaller evolutionary distances between related taxa. However, this relationship is significant when the phylogeny is resolved by the ME method rather than the ML method. Reliability of the minimum evolution approach is discussed. In contrast to most studies, the ME tree recovers Tarsius bancanus (Tarsiiformes) as a member of the Strepsirrhini, which phylogeny is supported by a strong branch length-reproductive age relationship and which is proposed as a novel heuristic method to test phylogeny. However, branches of certain taxa on the constructed phylogenetic tree show anomalous lengths relative to the mean female age at first birth, such as e.g. the human branch. As estimated in this paper, early members of the human lineage have likely reproduced at higher rates than modern humans, some forms possibly giving first birth at the mean age of 10-12 years, which is more comparable to the mean age at first birth in extant gorillas than to that typical of living humans and chimpanzees. Probable early reproduction in human ancestors is also supported by the comparably more evolved mitochondrial DNA in Denisovans than in modern humans, and by a smaller body mass in most fossil hominins, which often triggers fast maturation in primates. Copy rights belong to original authors. Visit the link for more info
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Архивные серии ("Канал не активен" status)

When? This feed was archived on December 15, 2021 15:07 (2+ y ago). Last successful fetch was on March 29, 2021 12:55 (3y ago)

Why? Канал не активен status. Нашим серверам не удалось получить доступ к каналу подкаста в течении длительного периода времени.

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Manage episode 288621296 series 2902310
Контент предоставлен MultiModal LLC and Multimodal LLC. Весь контент подкастов, включая выпуски, графику и описания подкастов, загружается и предоставляется непосредственно MultiModal LLC and Multimodal LLC или его партнером по платформе подкастов. Если вы считаете, что кто-то использует вашу работу, защищенную авторским правом, без вашего разрешения, вы можете выполнить процедуру, описанную здесь https://ru.player.fm/legal.
Link to bioRxiv paper: http://biorxiv.org/cgi/content/short/2020.08.09.232769v1?rss=1 Authors: Bajdek, P. Abstract: mtDNA-based phylogenetic trees of the order Primates were constructed by the minimum evolution (ME) and maximum likelihood (ML) methods. Branch lengths were compared with the mean female age at first birth in the taxa studied. Higher reproductive age in females triggers a lower number of generations through time and, on average, at the molecular level smaller evolutionary distances between related taxa. However, this relationship is significant when the phylogeny is resolved by the ME method rather than the ML method. Reliability of the minimum evolution approach is discussed. In contrast to most studies, the ME tree recovers Tarsius bancanus (Tarsiiformes) as a member of the Strepsirrhini, which phylogeny is supported by a strong branch length-reproductive age relationship and which is proposed as a novel heuristic method to test phylogeny. However, branches of certain taxa on the constructed phylogenetic tree show anomalous lengths relative to the mean female age at first birth, such as e.g. the human branch. As estimated in this paper, early members of the human lineage have likely reproduced at higher rates than modern humans, some forms possibly giving first birth at the mean age of 10-12 years, which is more comparable to the mean age at first birth in extant gorillas than to that typical of living humans and chimpanzees. Probable early reproduction in human ancestors is also supported by the comparably more evolved mitochondrial DNA in Denisovans than in modern humans, and by a smaller body mass in most fossil hominins, which often triggers fast maturation in primates. Copy rights belong to original authors. Visit the link for more info
  continue reading

128 эпизодов

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