野生の七面鳥の営巣生存に関する従来の常識を覆す研究結果(Study Overturns Conventional Wisdom About Wild Turkey Nesting Survival)

ad

2023-12-13 ノースカロライナ州立大学(NCState)

◆新研究によれば、野生の七面鳥の繁殖期の降水量は繁殖成功とは関連しておらず、従来の認識に反しています。これにより、気候変動が野生の七面鳥の個体群に与える影響に新たな見解がもたらされました。抱卵期間の降水が巣の生存に良い予測子でなく、逆に高温が生存率を向上させることが示されました。ただし、巣の成功に影響を与える他の要因や不確実性も考慮され、気候変動が七面鳥の個体群にどのような影響を与えるかははっきりしていません。

<関連情報>

天候と東部野生の七面鳥の巣の成功との関連性の頑健な評価 Robust assessment of associations between weather and eastern wild turkey nest success

Wesley W. Boone, Christopher E. Moorman, David J. Moscicki, Bret A. Collier, Michael J. Chamberlain, Adam J. Terando, Krishna Pacifici
The Journal of Wildlife Management  Published: 15 November 2023
DOI:https://doi.org/10.1002/jwmg.22524

野生の七面鳥の営巣生存に関する従来の常識を覆す研究結果(Study Overturns Conventional Wisdom About Wild Turkey Nesting Survival)

Abstract

Temperature and precipitation have been identified as factors that potentially influence eastern wild turkey (Meleagris gallopavo silvestris) reproduction, but robust analyses testing the relationship between weather parameters and turkey nest success are lacking. Therefore, we assessed how weather influenced turkey daily nest survival using 8 years of data collected from 715 nests across the southeastern United States. We also conducted exploratory analyses investigating if weather conditions during or prior to nesting best predicted nest success. We then assessed the possible implications of climate change through 2041–2060 for future eastern wild turkey daily nest survival and nest success for variables determined significant in analyses. During incubation, positive anomalies of minimum daily temperature were associated with greater daily nest survival. Precipitation during nesting was not a good predictor of daily nest survival. Exploratory analyses unexpectedly indicated that weather conditions in January prior to incubation were more important to nest success than weather conditions during incubation. In January, negative anomalies of minimum temperature and greater average daily precipitation were associated with greater nest success. Projections of future nest success or daily nest survival based on these relationships with the predictive covariates, and informed by climate models, suggest that nest success may increase as January precipitation increases and that daily nest survival may increase as temperature during incubation increases. These positive associations could be offset by a negative association between nest success and the expected increases in January minimum average temperature. Additional research is needed to investigate causes of these relationships and assess the implications of climate change for eastern wild turkey poult survival.

生物環境工学
ad
ad
Follow
ad
タイトルとURLをコピーしました