The delayed effect of climatic conditions on pre-fledging nestling haematocrit in a suboscine species in Patagonia
AbstractHaematocrit, the proportion of blood comprising erythrocytes, is often used as a proxy of individual condition. Nestling haematocrit is influenced by several factors, but ambient temperature is generally agreed as a key driver. It is unclear which day(s) in embryonic or nestling development...
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2023
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dataone:sha256:6a72b520e2bd6f625ccd3fdc4fc1c23382ec210d83fe25fa54df21cb2065722a 2024-10-03T18:45:36+00:00 The delayed effect of climatic conditions on pre-fledging nestling haematocrit in a suboscine species in Patagonia Churchill, Joseph Birker, Martje Versteegh, Maaike Altamirano, Tomás Vasquez, Rodrigo Komdeur, Jan 2023-04-27T00:00:00Z https://search.dataone.org/view/sha256:6a72b520e2bd6f625ccd3fdc4fc1c23382ec210d83fe25fa54df21cb2065722a unknown Climate Climate Change Temperature Evolution environmental change precipitation Climate Breakdown nestlings Other Thorn tailed rayadito haematocrit Dataset 2023 dataone:urn:node:BOREALIS 2024-10-03T18:19:22Z AbstractHaematocrit, the proportion of blood comprising erythrocytes, is often used as a proxy of individual condition. Nestling haematocrit is influenced by several factors, but ambient temperature is generally agreed as a key driver. It is unclear which day(s) in embryonic or nestling development are most influential in determining pre-fledgling haematocrit. This is important, because if we are able to identify what day(s) nestlings are physiologically most vulnerable to climatic conditions, this may inform future conservation management and help mitigate the effects. We investigated the effect of ambient temperature, precipitation, body size, brood size, age, food abundance and habitat on nestling haematocrit in Aphrastura spinicauda (thorn-tailed Rayaditos). We collected this data from two climatically different locations in Chile: Northern Patagonia (Pucón) and Sub-Antarctic Patagonia (Navarino Island), located ~1800 km further south. We aimed to identify the key drivers of nestling haematocrit and find when nestlings are physiologically most vulnerable to climatic conditions. We confirm that ambient temperature is the key driver of nestling haematocrit, with increasing ambient temperatures nestling haematocrit decreased. However, precipitation also affected haematocrit in the late incubation stage. At low and high precipitation, nestling haematocrit was low and is optimal in light rainfall. Our results show a delayed effect of ambient temperature and precipitation in late incubation and on the day of hatching which can determine pre-fledgling haematocrit, which may cause lower post-fledgling fitness. We found that climatic conditions on the day haematocrit was collected were not important in determining haematocrit. We found that haematocrit was higher in the sub-Antarctic area and that higher temperatures and precipitation on the day of hatching will result in lower nestling haematocrit and poorer pre-fledgling condition. As atmospheric temperatures rise, nestling fitness is at risk. This is a threat to many bird species, especially those in locations vulnerable to climate breakdown. Dataset Antarc* Antarctic Unknown Antarctic Patagonia Lower Post ENVELOPE(-128.482,-128.482,59.925,59.925) |
institution |
Open Polar |
collection |
Unknown |
op_collection_id |
dataone:urn:node:BOREALIS |
language |
unknown |
topic |
Climate Climate Change Temperature Evolution environmental change precipitation Climate Breakdown nestlings Other Thorn tailed rayadito haematocrit |
spellingShingle |
Climate Climate Change Temperature Evolution environmental change precipitation Climate Breakdown nestlings Other Thorn tailed rayadito haematocrit Churchill, Joseph Birker, Martje Versteegh, Maaike Altamirano, Tomás Vasquez, Rodrigo Komdeur, Jan The delayed effect of climatic conditions on pre-fledging nestling haematocrit in a suboscine species in Patagonia |
topic_facet |
Climate Climate Change Temperature Evolution environmental change precipitation Climate Breakdown nestlings Other Thorn tailed rayadito haematocrit |
description |
AbstractHaematocrit, the proportion of blood comprising erythrocytes, is often used as a proxy of individual condition. Nestling haematocrit is influenced by several factors, but ambient temperature is generally agreed as a key driver. It is unclear which day(s) in embryonic or nestling development are most influential in determining pre-fledgling haematocrit. This is important, because if we are able to identify what day(s) nestlings are physiologically most vulnerable to climatic conditions, this may inform future conservation management and help mitigate the effects. We investigated the effect of ambient temperature, precipitation, body size, brood size, age, food abundance and habitat on nestling haematocrit in Aphrastura spinicauda (thorn-tailed Rayaditos). We collected this data from two climatically different locations in Chile: Northern Patagonia (Pucón) and Sub-Antarctic Patagonia (Navarino Island), located ~1800 km further south. We aimed to identify the key drivers of nestling haematocrit and find when nestlings are physiologically most vulnerable to climatic conditions. We confirm that ambient temperature is the key driver of nestling haematocrit, with increasing ambient temperatures nestling haematocrit decreased. However, precipitation also affected haematocrit in the late incubation stage. At low and high precipitation, nestling haematocrit was low and is optimal in light rainfall. Our results show a delayed effect of ambient temperature and precipitation in late incubation and on the day of hatching which can determine pre-fledgling haematocrit, which may cause lower post-fledgling fitness. We found that climatic conditions on the day haematocrit was collected were not important in determining haematocrit. We found that haematocrit was higher in the sub-Antarctic area and that higher temperatures and precipitation on the day of hatching will result in lower nestling haematocrit and poorer pre-fledgling condition. As atmospheric temperatures rise, nestling fitness is at risk. This is a threat to many bird species, especially those in locations vulnerable to climate breakdown. |
format |
Dataset |
author |
Churchill, Joseph Birker, Martje Versteegh, Maaike Altamirano, Tomás Vasquez, Rodrigo Komdeur, Jan |
author_facet |
Churchill, Joseph Birker, Martje Versteegh, Maaike Altamirano, Tomás Vasquez, Rodrigo Komdeur, Jan |
author_sort |
Churchill, Joseph |
title |
The delayed effect of climatic conditions on pre-fledging nestling haematocrit in a suboscine species in Patagonia |
title_short |
The delayed effect of climatic conditions on pre-fledging nestling haematocrit in a suboscine species in Patagonia |
title_full |
The delayed effect of climatic conditions on pre-fledging nestling haematocrit in a suboscine species in Patagonia |
title_fullStr |
The delayed effect of climatic conditions on pre-fledging nestling haematocrit in a suboscine species in Patagonia |
title_full_unstemmed |
The delayed effect of climatic conditions on pre-fledging nestling haematocrit in a suboscine species in Patagonia |
title_sort |
delayed effect of climatic conditions on pre-fledging nestling haematocrit in a suboscine species in patagonia |
publishDate |
2023 |
url |
https://search.dataone.org/view/sha256:6a72b520e2bd6f625ccd3fdc4fc1c23382ec210d83fe25fa54df21cb2065722a |
long_lat |
ENVELOPE(-128.482,-128.482,59.925,59.925) |
geographic |
Antarctic Patagonia Lower Post |
geographic_facet |
Antarctic Patagonia Lower Post |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
_version_ |
1811923956768178176 |