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• W2896665972 abstract "Birds, across their annual cycle, progress through sequences of life-history stages such as reproduction and molt. The mechanisms that control annual avian itineraries involve endocrine responses triggered by seasonal environmental factors, including changes in resource availability and/or photoperiod. However, at equatorial latitudes birds are exposed to different degrees of seasonality, and the mechanisms underlying phenology of birds near the equator remain less explored. We studied the silver-beaked tanager, an endemic Amazonian songbird, from an equatorial lowland population. Remarkably, in this species, song behavior has been shown to be seasonally aligned to minimal changes in day length near the equator. Here, we aimed to further explore the phenology of silver-beaked tanagers by assessing shifts of food sources utilization as potential ultimate factors. We measured triple isotopic tracers of carbon (δ13C), nitrogen (δ15N) and sulphur (δ34S) in blood and feathers of birds throughout a whole year. In addition, we assessed the degree of seasonality in the molting activity, in relation to circulating levels of corticosterone, as well as to testosterone as a proxy of the reproductive condition of males.There was important seasonal variation of δ34S values in relation to rainfall patterns and changes in estuarine water composition. Despite the seasonal rainfall, we found no substantial variation in the foraging ecology of birds over seasons. This was accompanied by uniform levels of corticosterone throughout the year, probably associated with the absence of drastic seasonal resource shortages. Even so, silver-beaked tanagers showed a marked seasonal molting schedule, which was related to variation in the circulating levels of both corticosterone and testosterone.These findings suggest that foraging niche is not life history stage-dependent in silver-beaked tanagers, and highlight rainfall as an important environmental cue for bird phenology. Our stable isotope results encourage further studies addressing the influence of estuarine water dynamics on bird timing. In addition, the results suggest a primary role of steroid hormones in regulating seasonal life history stages under the absence of a marked photoperiod. Contrary to what might be expected for a tropical songbird, our physiological data in silver-beaked tanagers do not support reproduction-molt overlapping." @default.
• W2896665972 created "2018-10-26" @default.
• W2896665972 creator A5009162312 @default.
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• W2896665972 date "2018-10-29" @default.
• W2896665972 modified "2023-10-05" @default.
• W2896665972 title "Seasonality at the equator: isotope signatures and hormonal correlates of molt phenology in a non-migratory Amazonian songbird" @default.
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• W2896665972 cites W1860504940 @default.
• W2896665972 cites W1964369605 @default.
• W2896665972 cites W1964857605 @default.
• W2896665972 cites W1964926035 @default.
• W2896665972 cites W1970245186 @default.
• W2896665972 cites W1981748148 @default.
• W2896665972 cites W1987196911 @default.
• W2896665972 cites W1988019730 @default.
• W2896665972 cites W1998409072 @default.
• W2896665972 cites W2004062636 @default.
• W2896665972 cites W2005638112 @default.
• W2896665972 cites W2008265836 @default.
• W2896665972 cites W2011886716 @default.
• W2896665972 cites W2016125208 @default.
• W2896665972 cites W2017093604 @default.
• W2896665972 cites W2022830058 @default.
• W2896665972 cites W2024890572 @default.
• W2896665972 cites W2025044168 @default.
• W2896665972 cites W2026916609 @default.
• W2896665972 cites W2031559390 @default.
• W2896665972 cites W2035219164 @default.
• W2896665972 cites W2038041472 @default.
• W2896665972 cites W2045040114 @default.
• W2896665972 cites W2049757027 @default.
• W2896665972 cites W2050843169 @default.
• W2896665972 cites W2053727984 @default.
• W2896665972 cites W2059472735 @default.
• W2896665972 cites W2060404262 @default.
• W2896665972 cites W2062168261 @default.
• W2896665972 cites W2066588101 @default.
• W2896665972 cites W2068317062 @default.
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• W2896665972 cites W2091644770 @default.
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• W2896665972 cites W2111266201 @default.
• W2896665972 cites W2113023092 @default.
• W2896665972 cites W2113396319 @default.
• W2896665972 cites W2116845089 @default.
• W2896665972 cites W2123365787 @default.
• W2896665972 cites W2124645832 @default.
• W2896665972 cites W2127777975 @default.
• W2896665972 cites W2131000806 @default.
• W2896665972 cites W2132539548 @default.
• W2896665972 cites W2135210328 @default.
• W2896665972 cites W2135630518 @default.
• W2896665972 cites W2139568647 @default.
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• W2896665972 cites W2155009193 @default.
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• W2896665972 cites W2158228934 @default.
• W2896665972 cites W2158345841 @default.
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• W2896665972 doi "https://doi.org/10.1186/s12983-018-0284-7" @default.
• W2896665972 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/6205779" @default.
• W2896665972 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/30386404" @default.
• W2896665972 hasPublicationYear "2018" @default.
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