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Feeding rates and prey : predator size ratios of the nauplii and adult females of the marine cyclopoid copepod Oithona davisae
predator size Feeding rates and prey
2014/11/28
We studied the feeding behavior of the nauplii and adult females of the marine cyclopoid copepod Oithona
davisae in the laboratory. Functional response experiments showed that O. davisae can feed on ...
Food web consequences of size-based predation and vertical migration of an invertebrate predator (Leptodora kindtii)
size-based predation an invertebrate predator
2014/4/2
In an intensive study of the vertical and horizontal distribution of zooplankton in a eutrophic lake (Katepwa
Lake), we found that only adult Leptodora kindtii (. 5 mm in body size) exhibited diel ve...
Existence of Periodic Solution for a Predator-prey System with Feedback Control
Hassell-Varely type predator-prey coincidence degree theorem Lyapunov function global stability
2012/9/24
A Hassell-Varely type predator-prey system with feedback controls is studied. Using the comparison, continuation theorems and coincidence degree theorem, the existence of positive periodic solutions f...
Existence and Uniqueness of the Positive Solution to a Predator-prey Model with Stochastic Perturbation
Itos formula Brownian motion existence and uniqueness
2012/9/24
In this paper, a predator-prey model is estab lished with the modified Holling-type II schemes with stochastic perturbation. We mainly use Lyapun ov function and comparison theorem to show that there ...
A Lotka-Volterra model with impulsive effects on the prey and stage structure on the predator
Stage structure Impulsive Global attractivity Permanence
2010/9/21
In this paper, we consider a Lotka-Volterra model with impulsive effects on the prey and stage structure on the predator. We prove that all solutions of the system are uniformly ultimately bounded, su...
Nonconstant predator harvesting on ratio-dependent predator-prey models
Predator-prey models harvesting dynamical systems
2010/9/21
The dynamics of a ratio-dependent predator-prey model with two different non-constant harvesting functions depending on the predator population is studied. Equilibria and periodic orbits are computed ...
Physical factors influencing the distribution of a top predator in a subtropical oligotrophic estuary
Physical factors top predator a subtropical oligotrophic estuary
2014/4/18
We used longline fishing to determine the effects of distance from the ocean, season, and short-term variation in abiotic conditions on the abundance of juvenile bull sharks (Carcharhinus leucas) in a...
Permanence and periodic solution for a predator-prey model with mixed-type functional response
Predator-prey model mixed-type functional response
2010/9/14
In this paper, a predator-prey model with mixed-type functional response is investigated. Sufficient conditions are derived that guarantee the permanence of the system. Meanwhile, when the system is p...
The chaos and control of a prey-predator model with some unknown parameters
Dynamic estimators Attractors Unknown parameters
2010/9/14
In this paper we study the problems of chaos and control of the prey-predator model with some unknown parameters. We will use the non-linear feedback control approach to stabilize this system about it...
Response of the invertebrate predator Bythotrephes to a climate-linked increase in the duration of a refuge from fish predation
Response of the invertebrate predator Bythotrephes climate-linked increase duration of a refuge fish predation
2014/4/17
Climate warming can affect ecological food chains directly by increasing the rates of physiological processes and indirectly by changing habitat use and altering predator-prey interactions. In Lake Ma...
A global mathematical investigation of a predator-prey model
predator-prey plane differential system
2010/4/8
We construct a global bifurcation diagram of the plane differential system $$ {l} \dot x = x(1-x)-x y/(a+x^2), \dot y = y(\delta-\beta y/x), x(t)>0, y(t)>0, a>0, \delta>0, \beta>0, $$ which describes ...
Reproductive Ecology of Macroscytus japonensis as a Post-dispersal Seed Predator
burrower bug Prunus verecunda seed cache seed predation seed rot
2009/8/24
We examined the reproductive ecology of the burrower bugs (Macroscytus japonensis) that suck seeds of cherry (Prunus verecuude) dispersed on forest floors and induce rotting of the seeds. The burrower...
Predator Suites and Flabellinid Nudibranch Nematocyst Complements in the Gulf of Maine
Scientific Diving nudibranch nematocyst defense
2009/5/6
Nematocysts are a primary defense mechanism for combating predation in aeolid nudibranchs, and predator presence influences nematocyst uptake through nudibranch response to chemical cues from predato...
Behavior and Sound Production by Longspine Squirrelfish Holocentrus rufus During Playback of Predator and Conspecific Sounds
Longspine squirrelfish Holocentrus rufus sound underwater speaker
2009/5/6
Fishes and marine mammals make sounds and listen for predators and conspecifics, i.e., they communicate underwater using sound. Longspine squirrelfish Holocentrus rufus are nocturnal reef fishes livi...
Predator-Prey Interactions Between Orius insidiosus（Heteroptera：Anthocoridae）and Frankliniella tritici（Thysanoptera：Thripidae）in Cotton Blooms
Predator-Prey Interactions Orius insidiosus (Heteroptera: Anthocoridae) Frankliniella tritici (Thysanoptera: Thripidae) Cotton Blooms
2009/4/30
The insidious flower bug, Orius insidiosus (Say), is reported to effectively suppress Frankliniella species thrips populations. The objective of this study was to determine the effectiveness of this p...