Nature versus nurture: Structural equation modeling indicates that parental care does not mitigate consequences of poor environmental conditions in Eastern Bluebirds (Sialia sialis)
Open Access
- 20 October 2021
- journal article
- research article
- Published by Wiley in Ecology and Evolution
- Vol. 11 (21), 15237-15248
- https://doi.org/10.1002/ece3.8207
Abstract
How organisms respond to variation in environmental conditions and whether behavioral responses can mitigate negative consequences on growth, condition, and other fitness measures are critical to our ability to conserve populations in changing environments. Offspring development is affected by environmental conditions and parental care behavior. When adverse environmental conditions are present, parents may alter behaviors to mitigate the impacts of poor environmental conditions on offspring. We determined whether parental behavior (provisioning rates, attentiveness, and nest temperature) varied in relation to environmental conditions (e.g., food availability and ectoparasites) and whether parental behavior mitigated negative consequences of the environment on their offspring in Eastern Bluebirds (Sialia sialis). We found that offspring on territories with lower food availability had higher hematocrit, and when bird blow flies (Protocalliphora spp.) were present, growth rates were reduced. Parents increased provisioning and nest attendance in response to increased food availability but did not alter behavior in response to parasitism by blow flies. While parents altered behavior in response to resource availability, parents were unable to override the direct effects of negative environmental conditions on offspring growth and hematocrit. Our work highlights the importance of the environment on offspring development and suggests that parents may not be able to sufficiently alter behavior to ameliorate challenging environmental conditions.This publication has 69 references indexed in Scilit:
- Poor Nutritional Conditions During the Early Larval Stage Reduce Risk-Taking Activities of Fire Salamander Larvae (Salamandra salamandra)Ethology, 2011
- Incubation temperature influences locomotor performance in young wood ducks (Aix sponsa)Journal of Experimental Zoology – A (JEZ-A), 2011
- Behavior as a Key Component of Integrative Biology in a Human-altered WorldIntegrative and Comparative Biology, 2010
- Disparities and access to healthy food in the United States: A review of food deserts literatureHealth & Place, 2010
- Offspring size and timing of hatching determine survival and reproductive output in a lizardOecologia, 2009
- Temperature and life history: experimental heating leads female tree swallows to modulate egg temperature and incubation behaviourJournal of Animal Ecology, 2008
- Parasite‐mediated growth patterns and nutritional constraints in a cavity‐nesting birdJournal of Animal Ecology, 2007
- CORRIDORS AND OLFACTORY PREDATOR CUES AFFECT SMALL MAMMAL BEHAVIORJournal of Mammalogy, 2005
- EVOLUTION OF PASSERINE INCUBATION BEHAVIOR: INFLUENCE OF FOOD, TEMPERATURE, AND NEST PREDATIONEvolution, 2000
- Effects of a Dipteran Ectoparasite on Immune Response and Growth Trade-Offs in Barn Swallow, Hirundo rustica, NestlingsOikos, 1998