The delayed effect of climatic conditions on pre-fledging nestling haematocrit in a suboscine species in Patagonia ...

• Main Authors: Churchill, Joseph, Birker, Martje, Versteegh, Maaike, Altamirano, Tomás, Vasquez, Rodrigo, Komdeur, Jan
• Format: Article in Journal/Newspaper
• Language: unknown
• Published: Zenodo 2023
• Subjects: Thorn tailed rayadito; Climate Change; nestlings; haematocrit; Temperature; precipitation; environmental change; Climate Breakdown; Climate; Evolution; Antarctic; Patagonia; Polo; Cape Horn; Antarc*
• Online Access: https://dx.doi.org/10.5281/zenodo.7840282; https://zenodo.org/record/7840282

Haematocrit, 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 ... : Microsoft excel (CSV files) and R in RStudio v3.5.3 statistical software.Funding provided by: Cape Horn International Center* Crossref Funder Registry ID: Award Number: Chile ANID/BASAL FB10018 / CHIC-ANID PIA/BASAL PFB210018-ChileFunding provided by: Universidad de Chile Crossref Funder Registry ID: http://dx.doi.org/10.13039/501100005853 Award Number: ANID ACE210006 / AFB-170008- CONICYT-ChileFunding provided by: Rijksuniversiteit Groningen Crossref Funder Registry ID: http://dx.doi.org/10.13039/501100001721 Award Number: Marco-polo scholarship and Adaptive life scholarshipFunding provided by: Instituto de Ecología y Biodiversidad Crossref Funder Registry ID: http://dx.doi.org/10.13039/501100019575 Award Number: CONICYT PFB-23 ...