Results 11 to 20 of about 143,183 (293)

Review of inter and intraspecific predation by shorebirds

Ornis Fennica, 2020
Predation is often the most important driver of breeding productivity and population dynamics in birds, with an increasing impact in the currently rapidly changing world. Despite decades of intensive research, our understanding of trophic interactions and food webs is still limited.
Kubelka, Vojtech
openaire   +3 more sources

Variable Intraspecific Space Use Supports Optimality in an Apex Predator [PDF]

Scientific Reports, 2021
Abstract Within optimality theory, an animal’s home range can be considered a fitness-driven attempt to obtain resources for survival and reproduction while minimizing costs. We assessed whether brown bears (Ursus arctos) in two island populations maximized resource patches within home ranges (Resource Dispersion Hypothesis [RDH]) or occupied ...
S. P. Finnegan, N. J. Svoboda, N. L. Fowler, S. L. Schooler, J. L. Belant   +4 more
openaire   +4 more sources

Unbalanced population structure and reliance on intraspecific predation by largemouth bass in an agricultural pond with no available prey fish

Journal of Freshwater Ecology, 2020
The carnivorous largemouth bass Micropterus salmoides has been introduced to many regions and poses a threat to native aquatic organisms due to predation, resulting in a significant decrease in biodiversity.
Natsuru Yasuno, Yasufumi Fujimoto, Tetsuo Shimada, Shuichi Shikano, Eisuke Kikuchi   +4 more
doaj   +1 more source

Generalist predators disrupt parasitoid aphid control by direct and coincidental intraguild predation [PDF]

, 2011
Generalist predators and parasitoids are considered to be important regulators of aphids. The former not only feed on these pests, but might also consume parasitoids at all stages of development.
D. Sint, Bell, J. R., M. Traugott, Symondson, William Oliver Christian, Sint, D., Traugott, Michael, Raso, L., L. Raso, Symondson, W. O. C. (William O. C.), Symondson, W.O.C., W.O.C. Symondson, Symondson, W. O. C., Traugott, M., J.R. Bell, Bell, J.R.   +14 more
core   +1 more source

The evolution of crypsis when pigmentation is physiologically costly

Animal Biodiversity and Conservation, 2020
Predation is one of the main selective forces in nature, frequently selecting for crypsis in prey. Visual crypsis usually implies the deposition of pigments in the integument. However, acquisition, synthesis, mobilisation and maintenance of pigments may
G. Moreno–Rueda
doaj   +1 more source

Cooperation and Lateral Forces: Moving Beyond Bottom-Up and Top-Down Drivers of Animal Population Dynamics

Frontiers in Psychology, 2022
Biologists have long known that animal population dynamics are regulated by a combination of bottom-up (resource availability) and top-down forces (predation).
Ying-Yu Chen, Dustin R. Rubenstein, Sheng-Feng Shen, Sheng-Feng Shen   +3 more
doaj   +1 more source

The Predatory Ability and Intraspecific Interference Response of Arma chinensis to the Larvae of Ectropis grisescens [PDF]

Chaye kexue
To explore the biological control potential of Arma chinensis, a predatory insect, against Ectropis grisescens larvae, the predation and search effect of 4th-5th instar Arma chinensis nymphs and female adults on 3rd-5th instar larvae of Ectropis ...
GUO Shibao, CHEN Junhua, ZHANG Long, LI Feifan, LIU Hongmin, SHI Hongzhong
doaj   +1 more source

Intraspecific predation in the Liolaemus lizard radiation: a primer [PDF]

Animal Biology, 2012
Intraspecific predation (cannibalism) occurs in a number of lizard species, although the incidence of this trophic behaviour appears to be infrequent. Within the South AmericanLiolaemuslizard evolutionary radiation, the primary component of the carnivorous diet (herbivory has also evolved in several species) includes a diversity of arthropods and other
openaire   +2 more sources

Population variation in the trophic niche of the Trinidadian guppy from different predation regimes

Scientific Reports, 2017
Population variation in trophic niche is widespread among organisms and is of increasing interest given its role in both speciation and adaptation to changing environments.
Eugenia Zandonà, Christopher M. Dalton, Rana W. El-Sabaawi, Jason L. Howard, Michael C. Marshall, Susan S. Kilham, David N. Reznick, Joseph Travis, Tyler J. Kohler, Alexander S. Flecker, Steven A. Thomas, Catherine M. Pringle   +11 more
doaj   +1 more source

The trade-off between starvation and predation risk in overwintering redshanks (Tringa totanus) [PDF]

, 2010
In order to meet their energy budget animals must often increase their risk of predation, either through their choice of foraging location or by decreasing anti-predation behaviours, which are incompatible with foraging.
Sansom, Alex
core   +2 more sources