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Temporal instability of lake charr phenotypes: synchronicity of growth rates and morphology linked to environmental variables?

 
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Manage episode 288621311 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/2020.08.13.249557v1?rss=1 Authors: Chavarie, L., Voelker, S., Hansen, M., Bronte, C., Muir, A., Zimmerman, M., Krueger, c. Abstract: Pathways through which phenotypic variation arises among individuals arise can be complex. One assumption often made in relation to intraspecific diversity is that the stability or predictability of the environment will interact with expression of the underlying phenotypic variation. To address biological complexity below the species level, we investigated variability across years in morphology and annual growth increments between and within two sympatric lake charr ecotypes in Rush Lake, USA. We found a rapid phenotypic shift in body and head shape within a decade. The magnitude and direction of the observed phenotypic change was consistent in both ecotypes, which suggests similar pathways caused the temporal variation over time. Over the same time period, annual growth increments declined for both lake charr ecotypes and corresponded with a consistent phenotypic shift of each ecotype. Despite ecotype-specific annual growth changes in response to winter conditions, the observed annual growth shift for both ecotypes was linked, to some degree, with variation in the environment. Particularly, a declining trend in regional cloud cover was associated with an increase of early stage (age 1-3) annual growth for lake charr of Rush Lake. Underlying mechanisms causing reduced growth rates and constrained morphological modulation are not fully understood. An improved knowledge of the biology hidden within the expression of phenotypic variation promises to clarify our understanding of temporal morphological diversity and instability. Copy rights belong to original authors. Visit the link for more info
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Artwork
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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.

What now? You might be able to find a more up-to-date version using the search function. This series will no longer be checked for updates. If you believe this to be in error, please check if the publisher's feed link below is valid and contact support to request the feed be restored or if you have any other concerns about this.

Manage episode 288621311 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/2020.08.13.249557v1?rss=1 Authors: Chavarie, L., Voelker, S., Hansen, M., Bronte, C., Muir, A., Zimmerman, M., Krueger, c. Abstract: Pathways through which phenotypic variation arises among individuals arise can be complex. One assumption often made in relation to intraspecific diversity is that the stability or predictability of the environment will interact with expression of the underlying phenotypic variation. To address biological complexity below the species level, we investigated variability across years in morphology and annual growth increments between and within two sympatric lake charr ecotypes in Rush Lake, USA. We found a rapid phenotypic shift in body and head shape within a decade. The magnitude and direction of the observed phenotypic change was consistent in both ecotypes, which suggests similar pathways caused the temporal variation over time. Over the same time period, annual growth increments declined for both lake charr ecotypes and corresponded with a consistent phenotypic shift of each ecotype. Despite ecotype-specific annual growth changes in response to winter conditions, the observed annual growth shift for both ecotypes was linked, to some degree, with variation in the environment. Particularly, a declining trend in regional cloud cover was associated with an increase of early stage (age 1-3) annual growth for lake charr of Rush Lake. Underlying mechanisms causing reduced growth rates and constrained morphological modulation are not fully understood. An improved knowledge of the biology hidden within the expression of phenotypic variation promises to clarify our understanding of temporal morphological diversity and instability. Copy rights belong to original authors. Visit the link for more info
  continue reading

128 эпизодов

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