Results 31 to 40 of about 1,751,270 (289)

Interactions between native and invasive species: A systematic review of the red squirrel-gray squirrel paradigm

open access: yesFrontiers in Ecology and Evolution, 2023
The eastern gray squirrel (Sciurus carolinensis) has been labeled as one of the 100 worst invasive alien species by the IUCN. In Europe, the species has been introduced to Britain, Ireland and Italy, and its subsequent spread has resulted in wide-scale ...
Lucas A. Wauters   +6 more
doaj   +1 more source

Short-term indirect interactions between two moth (Lepidoptera: Noctuidae) species mediated by shared parasitoids: The benefit of being scarce

open access: yesEuropean Journal of Entomology, 2003
Despite the impact of parasitoids on insect populations being extensively studied, indirect parasitoid-mediated effects remain rarely documented in natural communities.
Tiit TEDER, Toomas TAMMARU
doaj   +1 more source

Natural enemies and biodiversity: The double-edged sword of trophic interactions

open access: yesMètode Science Studies Journal: Annual Review, 2019
Natural enemies, that is, species that inflict harm on others while feeding on them, are fundamental drivers of biodiversity dynamics and represent a substantial portion of biodiversity as well.
Alexandre Mestre, Robert D. Holt
doaj   +1 more source

Differential impact of a shared nematode parasite on two gamebird hosts: implications for apparent competition [PDF]

open access: yes, 2001
If the deleterious effects of non-specfic parasites are greater on vulnerable host species than on reservoir host species then exclusion of the vulnerable host through apparent competition is more likely. Evidence suggests that such a mechanism occurs in
Tompkins, David M   +2 more
core   +1 more source

Apparent mass of small children: Experimental measurements [PDF]

open access: yes, 2004
A test facility and protocol were developed for measuring the seated, vertical, whole-body vibration response of small children of less than 18 kg in mass over the frequency range from 1 to 45 Hz.
Giacomin, J
core   +1 more source

Predation determines different selective pressure on pea aphid host races in a complex agricultural mosaic. [PDF]

open access: yesPLoS ONE, 2013
Field assessments were conducted to examine the interplay between host plant and predation in complex agricultural mosaic on pea aphid clover and alfalfa races. In one experiment, we examined the relative fitness on clover race (CR) and alfalfa race (AR)
Adalbert Balog, Oswald J Schmitz
doaj   +1 more source

Antagonism of kinin effects on epithelia by Hoe 140: apparently competitive and non‐competitive interactions [PDF]

open access: yesBritish Journal of Pharmacology, 1992
Hoe‐140, a potent kinin receptor antagonist, was investigated for its ability to inhibit the effects of lysylbradykinin (kallidin) on a cultured colonic epithelium, HCA‐7 Colony 29, derived from a human adenocarcinoma. Measurements of electrogenic chloride secretion (as short circuit current), and of intracellular Ca2+ (from Fura‐2 fluorescence) were ...
A W, Cuthbert   +2 more
openaire   +2 more sources

Population dynamics of apparent competition in a host–parasitoid assemblage

open access: yesJournal of Animal Ecology, 1998
Summary The population dynamics of two moth species, Plodia interpunctella (Hübner) and Ephestia kuehniella Zeller in the presence of their shared parasitoid, Venturia canescens (Gravenhorst), were studied in well replicated time series experiments.
Bonsall, M, Hassell, M
openaire   +2 more sources

Competition among Aedes aegypti larvae. [PDF]

open access: yesPLoS ONE, 2018
Adult Aedes aegypti mosquitoes are important vectors of human disease. The size of the adult female affects her success, fitness, and ability to transmit diseases. The size of the adults is determined during the aquatic larval stage.
Kurt Steinwascher
doaj   +1 more source

Evaluating population impacts of predation by owls on storm petrels in relation to proposed island mouse eradication

open access: yesEcosphere, 2019
We quantify the expected demographic benefit to a seabird of conservation concern, the ashy storm‐petrel Oceanodroma homochroa, from the proposed eradication of introduced house mice Mus musculus on the South Farallon Islands, California. A key objective
Nadav Nur   +4 more
doaj   +1 more source

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