Researches on Population Ecology
1437-5613
0034-5466
Cơ quản chủ quản: N/A
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Các bài báo tiêu biểu
The genetics and ecology of sympatric speciation: A case study
Tập 40 - Trang 175-187 - 1998
Mating occurs on the larval host plant in allRhagoletis species (Diptera: Tephritidae). We show how this attribute, when coupled with certain differences in other biological traits, strongly influences the mode of speciation. In species of thesuavis species group, host shifts have never occurred during speciation, and larvae feed in the husks of any walnut species(Juglans spp.), which are highly t...... hiện toàn bộ
Territory establishment of young bio-clawed shrew,Sorex unguiculatus (Dobson) (Insectivora, Soricidae)
Tập 30 - Trang 83-93 - 1988
A model of the plant-to-plant movement of aphids I. Description of the model
Tập 9 - Trang 53-61 - 1967
The plant-to-plant movement of insects in one of the factors determining the distribution of individuals in insect populations. In this report the movement of barley aphids was analyzed by a statistical model. The model is represented as the convolution of three probability functions:
...... hiện toàn bộ
Effects of plant density on the survival rate of cabbage pests
Tập 41 - Trang 183-188 - 1999
The population density of herbivores depends on the spatial scale as well as the temporal scale. In a small-scale, short-term experiment, the number of individuals entering from the surrounding area will be most influential in determining the herbivore density. In large-scale, long-term experiments, however, the density of herbivores will rather be influenced by the survival rate of individuals i...... hiện toàn bộ
Different response in respiration between predaceous and phytophagous lady beetles (Coleoptera: Coccinellidae) to starvation
Tập 24 - Trang 132-141 - 1982
Survival times and changes in the respiratory rates and the live body weights of a predaceous lady beetle,Coccinella septempunctata bruckii
Mulsant, and a phytophagous lady beetle,Henosepilachna vigintioctopunctata
Fabricius, under starved conditions were compared.
...... hiện toàn bộ
Interactions among fungal endophytes, grasses and herbivores
Tập 38 - Trang 191-201 - 1996
The interaction between two species often depends on the presence or absence of a third species. One widespread three-species interaction involves fungal endophytes infecting grasses and the herbivores that feed upon them. The endophytes are allied with the fungal family Clavicipitaceae and grow systemically in intercellular spaces in above-ground plant tissues including seeds. Like relatedClavice...... hiện toàn bộ
Species diversity preserved in different numbers of nature reserves of the same total area
Tập 27 - Trang 137-143 - 1985
The expected number of species occurring in different numbers of reserves of the same total area is examined on different assumptions of the spatial distribution and the probability of extinction. The advantage of one large reserve or several smaller ones of equal total area depends on the spatial distributions of species and the stage after the establishement of reserves. In general, several smal...... hiện toàn bộ
Habitat use by the refuging predator,Agriosphodrus dohrni Signoret I. Nymphal microhabitat suitability and density dependent microhabitat selection by ovipositing females
Tập 28 - Trang 321-332 - 1986
Component analysis and modelling of the movement process: The simulation of simple tracks
- 1982
A model for the simulation of simple snail tracks is presented. The parameters required by the model include: (1) the distribution of turn angles at each step; (2) the mean and (3) the variance of step sizes; (4) the initial bearing angle and (5) the proportion of time spent moving. The model readily generates realistic tracks and predicts adequately values of parameters not specifically built int...... hiện toàn bộ
Insect migration: Variability and success in a capricious environment
Tập 36 - Trang 165-171 - 1994
Stochastic effects of climate and weather have a pervasive influence on the induction, performance and evolution of migration. In wing-dimorphic species, their influence on habitat quality, and on rates of development of the migrant itself, maintains variation in responses to environmental cues determining wing-form and migratory behaviour. Migrants flying above their flight boundary layer rely on...... hiện toàn bộ