Researches on Population Ecology
1437-5613
0034-5466
Cơ quản chủ quản: N/A
Phân tích ảnh hưởng
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...
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: The probability thatl
individuals are located on a plant at timet 1 is represented by the following
equation $$R\l...
Dynamics of an enclosed population of pine mice,Microtus pinetorum
Tập 10 - Trang 21-30 - 1968
Enclosed populations of pine mice were studied over a 28-month period and
compared with populations in surrounding natural areas. The enclosed populations
reached densities far greater than any observed in surrounding natural areas. It
is suggested that the restriction placed on dispersal by the enclosure walls and
the addition of food in the form of trap bait could have allowed the enclosed
popul...
An analysis of the kinematics of swarming ofAnarete pritchardi kim (Diptera: Cecidomyiidae)
Tập 16 - Trang 1-42 - 1974
Movies of swarming of a cecidomyiid midgeAnarete pritchardi Kim, are analysed to
provide kinematic data for swarming. Statistical characteristics calculated from
the basic data are the mean, variance, standard deviation, skewness, and
kurtosis of the insect coordinates; insect number-density distribution in space,
frequency distribution of insect velocities; velocity autocorrelation
coefficients; ...
Mô hình mối quan hệ giữa sự phong phú và cấp bậc của các loài trong một cộng đồng ở môi trường sống mở Dịch bởi AI
Tập 22 - Trang 51-68 - 1980
Một mô hình toán học được đề xuất để mô tả mối quan hệ giữa sự phong phú và cấp
bậc của các loài theo thứ tự từ loài phong phú nhất đến loài phong phú nhất ít
hơn trong một cộng đồng ở môi trường sống mở. Mô hình này được rút ra như một hệ
quả của phương trình diện tích loài (Kobayashi, 1975), mà có thể được kỳ vọng
trong trường hợp khi các cá thể của mỗi loài phân bố đồng đều trên một khu vực
sốn...
A new method of sequential sapling to classify populations relative to a critical density
Tập 17 - Trang 239-239 - 1976
Evolution of mutualistic symbiosis: A differential equation model
Tập 38 - Trang 211-218 - 1996
In geological history, rapid speciation, called adaptive radiation, has occurred
repeatedly. The origins of such newly developing taxa often evolved from the
symbiosis of different species. Mutualistic symbioses are generally considered
to evolve from parasitic relationships. As well as the previous model of host
population with discrete generations, a differential equation model of host
populatio...
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...
Movement patterns of threeAthalia sawflies in relation to the spatio-temporal distributions of their habitats
Tập 34 - Trang 1-14 - 1992
I compared the differences in the movement intensity of three species of
sympatricAthalia sawflies,A. japonica, A. rosae andA. infumata feeding on
cruciferous plants. Mark-release-recapture census was conducted to estimate
movement distance, sex ratio and age composition of adult sawflies. In addition,
the sex ratio of newlyemerged adults was examined by rearing field-collected
larvae until adult ...