Document of bibliographic reference 355444

BibliographicReference record

Type

Bibliographic resource

Type of document

Journal article

BibLvlCode

AS

Title

Territoriality constrains foraging activity and has carry-over effects on reproductive investment

Abstract

Colonial breeding provides benefits such as reduced predation risk, but also entails costs due to the enhanced levels of competition. In particular, it may require a significant amount of time and energy to establish a territory at the onset of reproduction, which in turn can impose carry-over effects on subsequent reproductive investments. Here we made use of GPS tracking devices to test how a colonial breeder, the lesser black-backed gull (Larus fuscus), balances its time investment between territorial and foraging activities throughout the pre-laying period, and investigated possible fitness consequences. As hypothesized, individuals that spent more time in their territories reduced their foraging time, foraged closer to the colony, and spent less time commuting during foraging trips. Although males initially invested more time in establishing a territory, both sexes gradually spent more time in their territory as the onset of egg laying, an energetically demanding period, approached. Furthermore, males that exhibited a higher territory attendance alleviated the females’ time constraints for foraging and their partners laid larger eggs. Our results highlight the importance of quantifying carry-over effects related to time budgets during the (often understudied) pre-laying period, to better comprehend fitness consequences of colonial breeding.

WebOfScience code

https://www.webofscience.com/wos/woscc/full-record/WOS:000805180800001

Bibliographic citation

Salas, R.; Baert, J.; Stienen, E.; Lens, L.; Müller, W. (2022). Territoriality constrains foraging activity and has carry-over effects on reproductive investment. Mar. Biol. (Berl.) 169(7): 87. https://dx.doi.org/10.1007/s00227-022-04073-4

Topic

Marine

Is peer reviewed

true