Match or mismatch

The influence of phenology on size-dependent life history and divergence in population structure

Jost Borcherding, Peter Beeck, Donald L. DeAngelis, Werner R. Scharf

Research output: Contribution to journalArticle

18 Citations (Scopus)

Abstract

1. In gape-limited predators, body size asymmetries determine the outcome of predator-prey interactions. Due to ontogenetic changes in body size, the intensity of intra- and interspecific interactions may change rapidly between the match situation of a predator-prey system and the mismatch situation in which competition, including competition with the prey, dominates. 2. Based on a physiologically structured population model using the European perch (Perca fluviatilis), analysis was performed on how prey density (bream, Abramis brama), initial size differences in the young-of-the-year (YOY) age cohort of the predator, and phenology (time-gap in hatching of predator and prey) influence the size structure of the predator cohort. 3. In relation to the seasonality of reproduction, the match situation of the predator-prey system occurred when perch hatched earlier than bream and when no gape-size limitations existed, leading to decreased size divergence in the predator age cohort. Decreased size divergence was also found when bream hatched much earlier than perch, preventing perch predation on bream occurring, which, in turn, increased the competitive interaction of the perch with bream for the common prey, zooplankton; i.e. the mismatch situation in which also the mean size of the age cohort of the predator decreased. 4. In between the total match and the mismatch, however, only the largest individuals of the perch age cohort were able to prey on the bream, while smaller conspecifics got trapped in competition with each other and with bream for zooplankton, leading to enlarged differences in growth that increased size divergence. 5. The modelling results were combined with 7 years of field data in a lake, where large differences in the length-frequency distribution of YOY perch were observed after their first summer. These field data corroborate that phenology and prey density per predator are important mechanisms in determining size differences within theYOYage cohort of the predator. 6. The results demonstrate that the switch between competitive interactions and a predator-prey relationship depended on phenology. This resulted in pronounced size differences in the YOY age cohort, which had far-reaching consequences for the entire predator population.

Original languageEnglish
Pages (from-to)1101-1112
Number of pages12
JournalJournal of Animal Ecology
Volume79
Issue number5
DOIs
StatePublished - Sep 1 2010

Fingerprint

Perches
phenology
population structure
life history
divergence
predator
bream
predators
perch
Population
Zooplankton
Body Size
Perca fluviatilis
predator-prey relationships
zooplankton
body size
Lakes
Abramis brama
intraspecific interaction
Reproduction

Keywords

  • Hatching date
  • Match-mismatch hypothesis
  • Perca fluviatilis
  • Physiologically structured population model
  • Predator-prey interactions
  • Size variation
  • Young-of-the-year

ASJC Scopus subject areas

  • Animal Science and Zoology
  • Ecology, Evolution, Behavior and Systematics
  • Medicine(all)

Cite this

Match or mismatch : The influence of phenology on size-dependent life history and divergence in population structure. / Borcherding, Jost; Beeck, Peter; DeAngelis, Donald L.; Scharf, Werner R.

In: Journal of Animal Ecology, Vol. 79, No. 5, 01.09.2010, p. 1101-1112.

Research output: Contribution to journalArticle

Borcherding, Jost ; Beeck, Peter ; DeAngelis, Donald L. ; Scharf, Werner R. / Match or mismatch : The influence of phenology on size-dependent life history and divergence in population structure. In: Journal of Animal Ecology. 2010 ; Vol. 79, No. 5. pp. 1101-1112.
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