Results 21 to 30 of about 1,020 (210)
Genetic divergence and aggressiveness within a supercolony of the invasive ant Linepithema humile [PDF]
NeoBiota, 2022 Biological invasions constitute an opportunity to study the evolutionary processes behind species’ adaptations. The invasive potential of some species, like the Argentine ant (Linepithema humile), has likely been increasing because they show low ...
Iago Sanmartín-Villar +4 more
doaj +3 more sources
Feeding strategies and intraspecific competition in German yellowjacket (Vespula germanica). [PDF]
PLoS ONE, 2018 The German yellowjacket (Vespula germanica) is an opportunist predator and a scavenger, whose eclectic diet also includes honey, brood, dead and live honey-bees.
Michelina Pusceddu +3 more
doaj +1 more source
Intraspecific Competition and the Promotion of Ecological Specialization [PDF]
, 2021 Abstract The evolution of ecological specialization can be summed up in a single question: why would a species evolve a more-restricted niche space? Various hypotheses have been developed to explain the promotion or suppression of ecological specialization. One hypothesis, competitive diversification, states that increased intraspecific
Abdel H. Halloway, Joel S. Brown
openaire +1 more source
Competition between Medicago sativa and Dactylis glomerata in mixed culture
Notulae Botanicae Horti Agrobotanici Cluj-Napoca, 1991 The higs yield obtained from mixte culture of Medicago sativa and Dactylis glomerata in favourable cultivating conditions, show the superiority of this mixture in obtaining rich and constant yields.
Ioan ROTAR, Aurelia MOLDOVAN
doaj +1 more source
Virus infection suppresses Nicotiana benthamiana adaptive phenotypic plasticity. [PDF]
PLoS ONE, 2011 Competition and parasitism are two important selective forces that shape life-histories, migration rates and population dynamics. Recently, it has been shown in various pathosystems that parasites can modify intraspecific competition, thus generating an ...
Stéphanie Bedhomme, Santiago F Elena
doaj +1 more source
Egg chemoattractants moderate intraspecific sperm competition [PDF]
Evolution Letters, 2017 AbstractInteractions among eggs and sperm are often assumed to generate intraspecific variation in reproductive fitness, but the specific gamete-level mechanisms underlying competitive fertilization success remain elusive in most species. Sperm chemotaxis–the attraction of sperm by egg-derived chemicals—is a ubiquitous form of gamete signaling ...
Lymbery, Rowan A. +2 more
openaire +2 more sources
Frontiers in Marine ScienceIntraspecific competition and resource diversity are considered major drivers of niche differentiation, which are expected to promote population niche expansion by driving individuals to feed on alternative resources and/or by enhancing individual diet ...
Rodgee Mae Guden +3 more
doaj +1 more source
Frontiers in Plant Science, 2019 Clonal plants may face various types of resource heterogeneity in their natural habitats; as such, spatial or temporal resource heterogeneity can affect the growth of clonal plants.
Hongwei Yu +3 more
doaj +1 more source
Widespread disruptive selection in the wild is associated with intense resource competition
BMC Evolutionary Biology, 2012 Background Disruptive selection has been documented in a growing number of natural populations. Yet, its prevalence within individual systems remains unclear. Furthermore, few studies have sought to identify the ecological factors that promote disruptive
Martin Ryan A, Pfennig David W
doaj +1 more source
Bipolar patterns of intraspecific competition in bryozoans [PDF]
Marine Ecology Progress Series, 2005 Polar shores probably represent the most dynamic and extremely disturbed environ- ments on the globe. Nevertheless intense battles amongst sessile organisms for space are common- place on hard substrata, mainly between fast-growing pioneer species. In this study we examined spatial interactions in encrusting species at 3 sites within each of 2 high ...
DKA Barnes, P Kuklinski
openaire +3 more sources