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Patterns and Drivers of Social Nest Visitation Behavior in Wild Tree Swallows
Patterns and Drivers of Social Nest Visitation Behavior in Wild Tree Swallows
Patterns and Drivers of Social Nest Visitation Behavior in Wild Tree Swallows

상세정보

자료유형  
 학위논문 서양
최종처리일시  
20260202104834
ISBN  
9798293824038
DDC  
574.5
저자명  
Ryan, Thomas Augustine John.
서명/저자  
Patterns and Drivers of Social Nest Visitation Behavior in Wild Tree Swallows
발행사항  
[Sl] : Cornell University, 2025
발행사항  
Ann Arbor : ProQuest Dissertations & Theses, 2025
형태사항  
147 p
주기사항  
Source: Dissertations Abstracts International, Volume: 87-03, Section: B.
주기사항  
Advisor: Vitousek-Bemis, Maren.
학위논문주기  
Thesis (Ph.D.)--Cornell University, 2025.
초록/해제  
요약Social interactions are an important factor in determining organismal fitness and frequently change in response to challenging conditions. Extra-territorial visitation behavior is one particularly poorly understood form of social interaction which appears to be common in birds. Understanding the patterns and drivers of these and other social interactions in wild animals can be challenging; however, long-term, automated data collection can provide new insights, particularly when paired with experimental manipulations of the environmental context in which those interactions occur. Here, I explored a social nest visitation behavior in a wild population of tree swallows in Ithaca, NY.In Chapter 1, using a 12-year automated monitoring dataset, I explored patterns of visitation from thousands of visits and hundreds of nests. With those patterns, I evaluated multiple, non-exclusive hypotheses to explain visitation prevalence. Visitation patterns were inconsistent with commonly supported hypotheses for extra-territorial visitation (mistakes, extra-pair mating, competition for nest sites, or prospecting) and instead were consistent with both the social byproduct and information gathering hypotheses.In Chapter 2, I tested whether glucocorticoids influenced this social visitation behavior. Using an experimental manipulation to increase circulating corticosterone levels, I found that birds with experimentally elevated corticosterone made more trips to neighbors' nests, particularly during early and late nestling stages. These results suggest that glucocorticoids promote social behavior and access to nest-based social information, a potential benefit following challenging conditions.In Chapter 3, I explored a different organismal response to better understand the timescales over which tree swallows respond to challenging weather conditions during breeding. Specifically, I examined how weather conditions alter the energetic response to a subsequent acute challenge in breeding female tree swallows. Using a three-year dataset, I assessed if weather over 3- or 72-hour timescales predicted baseline and stress-induced glucose levels. Weather conditions did not affect baseline glucose; however, birds that experienced lower temperatures over the preceding 72 hours had higher stress-induced glucose when faced with an acute stressor. These findings support the idea that the glucose stress response may be primed by exposure to prior challenges.In Chapter 4, I investigated how natural temperature variation and experimental nest cooling affect social nest visitation behavior. Social visitation behavior decreased at extreme temperatures, particularly as temperatures declined, with each additional prior day below 18.5°C further decreasing visit frequency. However, experimental nest cooling did not affect visitation rates. This indicated that cold weather may influence social behavior through its effects on food availability. This decline in social interactions could represent a hidden cost to breeding tree swallows through reducing access to social information.Together, this research demonstrates that social nest visitation in tree swallows is best explained by providing an avenue to gather social information from neighboring conspecifics among a closely aggregated population of wild birds. The frequency of these social interactions is influenced by both physiological mediators (glucocorticoids promote visitation) and environmental constraints (extreme temperatures reduce visitation). Social information gathering represents an important but underappreciated component of social interaction in wild organisms.
일반주제명  
Ecology
일반주제명  
Endocrinology
일반주제명  
Biology
일반주제명  
Environmental science
키워드  
Behavioral ecology
키워드  
Glucocorticoids
키워드  
Glucose
키워드  
Social visitation
키워드  
Temperature
키워드  
Tree swallows
기타저자  
Cornell University Ecology and Evolutionary Biology
기본자료저록  
Dissertations Abstracts International. 87-03B.
전자적 위치 및 접속  
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■1001  ▼aRyan,  Thomas  Augustine  John.▼0(orcid)0000-0002-9096-1029
■24510▼aPatterns  and  Drivers  of  Social  Nest  Visitation  Behavior  in  Wild  Tree  Swallows
■260    ▼a[Sl]▼bCornell  University▼c2025
■260  1▼aAnn  Arbor▼bProQuest  Dissertations  &  Theses▼c2025
■300    ▼a147  p
■500    ▼aSource:  Dissertations  Abstracts  International,  Volume:  87-03,  Section:  B.
■500    ▼aAdvisor:  Vitousek-Bemis,  Maren.
■5021  ▼aThesis  (Ph.D.)--Cornell  University,  2025.
■520    ▼aSocial  interactions  are  an  important  factor  in  determining  organismal  fitness  and  frequently  change  in  response  to  challenging  conditions.  Extra-territorial  visitation  behavior  is  one  particularly  poorly  understood  form  of  social  interaction  which  appears  to  be  common  in  birds.  Understanding  the  patterns  and  drivers  of  these  and  other  social  interactions  in  wild  animals  can  be  challenging;  however,  long-term,  automated  data  collection  can  provide  new  insights,  particularly  when  paired  with  experimental  manipulations  of  the  environmental  context  in  which  those  interactions  occur.  Here,  I  explored  a  social  nest  visitation  behavior  in  a  wild  population  of  tree  swallows  in  Ithaca,  NY.In  Chapter  1,  using  a  12-year  automated  monitoring  dataset,  I  explored  patterns  of  visitation  from  thousands  of  visits  and  hundreds  of  nests.  With  those  patterns,  I  evaluated  multiple,  non-exclusive  hypotheses  to  explain  visitation  prevalence.  Visitation  patterns  were  inconsistent  with  commonly  supported  hypotheses  for  extra-territorial  visitation  (mistakes,  extra-pair  mating,  competition  for  nest  sites,  or  prospecting)  and  instead  were  consistent  with  both  the  social  byproduct  and  information  gathering  hypotheses.In  Chapter  2,  I  tested  whether  glucocorticoids  influenced  this  social  visitation  behavior.  Using  an  experimental  manipulation  to  increase  circulating  corticosterone  levels,  I  found  that  birds  with  experimentally  elevated  corticosterone  made  more  trips  to  neighbors'  nests,  particularly  during  early  and  late  nestling  stages.  These  results  suggest  that  glucocorticoids  promote  social  behavior  and  access  to  nest-based  social  information,  a  potential  benefit  following  challenging  conditions.In  Chapter  3,  I  explored  a  different  organismal  response  to  better  understand  the  timescales  over  which  tree  swallows  respond  to  challenging  weather  conditions  during  breeding.  Specifically,  I  examined  how  weather  conditions  alter  the  energetic  response  to  a  subsequent  acute  challenge  in  breeding  female  tree  swallows.  Using  a  three-year  dataset,  I  assessed  if  weather  over  3-  or  72-hour  timescales  predicted  baseline  and  stress-induced  glucose  levels.  Weather  conditions  did  not  affect  baseline  glucose;  however,  birds  that  experienced  lower  temperatures  over  the  preceding  72  hours  had  higher  stress-induced  glucose  when  faced  with  an  acute  stressor.  These  findings  support  the  idea  that  the  glucose  stress  response  may  be  primed  by  exposure  to  prior  challenges.In  Chapter  4,  I  investigated  how  natural  temperature  variation  and  experimental  nest  cooling  affect  social  nest  visitation  behavior.  Social  visitation  behavior  decreased  at  extreme  temperatures,  particularly  as  temperatures  declined,  with  each  additional  prior  day  below  18.5°C  further  decreasing  visit  frequency.  However,  experimental  nest  cooling  did  not  affect  visitation  rates.  This  indicated  that  cold  weather  may  influence  social  behavior  through  its  effects  on  food  availability.  This  decline  in  social  interactions  could  represent  a  hidden  cost  to  breeding  tree  swallows  through  reducing  access  to  social  information.Together,  this  research  demonstrates  that  social  nest  visitation  in  tree  swallows  is  best  explained  by  providing  an  avenue  to  gather  social  information  from  neighboring  conspecifics  among  a  closely  aggregated  population  of  wild  birds.  The  frequency  of  these  social  interactions  is  influenced  by  both  physiological  mediators  (glucocorticoids  promote  visitation)  and  environmental  constraints  (extreme  temperatures  reduce  visitation).  Social  information  gathering  represents  an  important  but  underappreciated  component  of  social  interaction  in  wild  organisms.
■590    ▼aSchool  code:  0058.
■650  4▼aEcology
■650  4▼aEndocrinology
■650  4▼aBiology
■650  4▼aEnvironmental  science
■653    ▼aBehavioral  ecology
■653    ▼aGlucocorticoids
■653    ▼aGlucose
■653    ▼aSocial  visitation
■653    ▼aTemperature
■653    ▼aTree  swallows
■690    ▼a0329
■690    ▼a0409
■690    ▼a0306
■690    ▼a0768
■71020▼aCornell  University▼bEcology  and  Evolutionary  Biology.
■7730  ▼tDissertations  Abstracts  International▼g87-03B.
■790    ▼a0058
■791    ▼aPh.D.
■792    ▼a2025
■793    ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17359098▼nKERIS▼z이  자료의  원문은  한국교육학술정보원에서  제공합니다.

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