Evolutionary Ecology
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Experimental microevolution: transplantation of pink salmon into the European North
Evolutionary Ecology - - 2011
Human-mediated translocations of species beyond their native ranges can enhance evolutionary processes in populations introduced to novel environments. We studied such processes in several generations of pink salmon Oncorhynchus gorbuscha introduced to the European North of Russia using a set of morphological and life-history traits as well as molecular genetic markers with different selective val......
Local sex-ratio dynamics: a model for the dioecious liverwort Marchantia inflexa
Evolutionary Ecology - Tập 15 - Trang 231-254 - 2001
In many dioecious bryophyte species, population sex ratios range from all female to all male. The focal species of the present study, the liverwort Marchantia inflexa, forms patches on rock and bark surfaces, and these differ widely in sex ratio at a rainforest field site in Trinidad. This analysis – to our knowledge the first modeling study of sex-ratio dynamics in a dioecious clonal organism – a......
Does seed dormancy benefit the mother plant by reducing sib competition?
Evolutionary Ecology - Tập 8 - Trang 422-430 - 1994
Seed dormancy has been considered, almost without exception, as a bet-hedging strategy in a temporally varying environment. However, in this paper we show that seed dormancy can improve the reproductive success of the mother plant when competition between sibling seedlings and adult plants is intense even if the environment is temporally invariable. We allow a cohort of sibling seeds to germinate ......
Variation in life-history traits among Urtica dioica populations with different history in parasitism by the holoparasitic plant Cuscuta europaea
Evolutionary Ecology - Tập 16 - Trang 433-454 - 2002
Several studies demonstrate that natural enemies (e.g. parasites) have profound negative effects on the life-history traits of their hosts. If the host can compensate for the negative effects of parasitic infection by altering its life history, these modifications may partly form the basis of resistance or tolerance against parasites. Thus, parasites may be of considerable importance in shaping th......
Ecological release and directional change in White Sands lizard trophic ecomorphology
Evolutionary Ecology - - 2015
Does breeding ecology alter selection on developmental and life history traits? A case study in two Ambystomatid salamanders
Evolutionary Ecology - Tập 30 - Trang 503-517 - 2016
Terrestrial breeding with extended incubation has evolved repeatedly in fishes and amphibians but raises challenges for embryos, which must conserve sufficient yolk to continue development until water is available. One means of avoiding premature yolk consumption is for embryos to slow their development such that yolk is consumed more slowly. However slower development is associated with smaller a......
The Bumpus house sparrow data: A reanalysis using structural equation models
Evolutionary Ecology - Tập 10 - Trang 387-404 - 1996
We analysed the data of H.C. Bumpus on the survival of house sparrows (Passer domesticus) using structural equation modelling techniques. Using data on seven morphological variables measured by Bumpus, we tested and confirmed a three-factor model that characterized physical attributes for general size, leg size and head size. Although males were physically larger than females, we found no differen......
Female and male contribution to egg size in salmonids
Evolutionary Ecology - Tập 15 - Trang 143-153 - 2001
Egg size contributes to other life history traits of an individual. It is traditionally considered as a maternally determined characteristic to which the male does not have any direct contribution. However, a recent finding in insects suggests that males can affect egg size also directly. In fish, the male effect could take place only during egg swelling, as the final egg size is reached after tha......
Evolution of cannibalism in the larval stage of pelagic fish
Evolutionary Ecology - Tập 13 - Trang 191-209 - 1999
Larvae of several ocean pelagic fish species, such as tunas and marlins, have been known to have large jaws, but the ecological significance of this unique morphological character has been hardly analyzed in evolutionary ecology. Pelagic spawners produce small and nutrition-poor ova, and spawning and nursery grounds of the open ocean migratory fishes are oligotrophic. We hypothesize that cannibali......
The hidden effect of inadvertent social information use on fluctuating predator–prey dynamics
Evolutionary Ecology - Tập 35 - Trang 101-114 - 2020
Understanding biotic interactions and abiotic forces that govern population regulation is crucial for predicting stability from both theoretical and applied perspectives. In recent years, social information has been proposed to profoundly affect the dynamics of populations and facilitate the coexistence of interacting species. However, we have limited knowledge about how social information use inf......
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