Intraspecific interactions at high predator densities affect the predation efficiency ofNeoseiulus californicus(Acari: Phytoseiidae) when prey density is low DOI
Nikos E. Papanikolaou, George D. Broufas, Theodore Kypraios

et al.

Ecological Entomology, Journal Year: 2022, Volume and Issue: 47(5), P. 770 - 777

Published: May 17, 2022

Abstract Quantifying functional responses is a cornerstone in evaluating the predation efficiency of biological control agents such as predatory insects and mites. In this study, we investigate whether Neoseiulus californicus (Acari: Phytoseiidae) consuming prey driven by intraspecific interactions. For purpose, laboratory response experiments were conducted using one, two, three or four predators at several initial egg densities two‐spotted spider mite, Tetranychus urticae Tetranychidae). The data fitted to predator‐dependent Crowley–Martin model which accounts for results suggest that high densities, i.e. predator satiated, interactions did not affect potential N . , maximum number T. eggs can be attacked individuals differ between treatments (i.e., densities). However, low highest density individuals), detected, revealed estimated attack rates, per capita consumption densities. While mean rates significantly when two exposed prey, increased individuals, rate was considerable lower compared other These indicate are more intense where satiated therefore digestion breaks do exist. contrast, exist, so may fully accommodate cost also should considered measured.

Language: Английский

Generalized Lotka-Volterra Systems with Time Correlated Stochastic Interactions DOI
Samir Suweis, Francesco Ferraro,

Christian Grilletta

et al.

Physical Review Letters, Journal Year: 2024, Volume and Issue: 133(16)

Published: Oct. 16, 2024

In this Letter, we explore the dynamics of species abundances within ecological communities using generalized Lotka-Volterra (GLV) model. At variance with previous approaches, present an analysis GLV temporal stochastic fluctuations in interaction strengths between species. We develop a dynamical mean field theory (DMFT) tailored for scenarios colored noise interactions, which term annealed disorder, and simple functional responses. Our DMFT framework enables us to show that disorder acts as effective environmental noise; i.e., every experiences time-dependent environment shaped by collective presence all other then derive analytical predictions abundance distribution well match empirical observations. results suggest favors coexistence leads large pool very rare systems, supporting insurance biodiversity. This Letter offers new insights not only into modeling ecosystem but also proposes novel methodologies examining systems.

Language: Английский

Citations

9
The rise of the Functional Response in invasion science: a systematic review DOI Creative Commons
Larissa Faria, Ross N. Cuthbert, James W. E. Dickey

et al.

NeoBiota, Journal Year: 2023, Volume and Issue: 85, P. 43 - 79

Published: June 9, 2023

Predicting which non-native species will negatively impact biodiversity is a longstanding research priority. The Functional Response (FR; resource use in relation to availability) classical ecological concept that has been increasingly applied quantify, assess and compare impacts of species. Despite this recent growth, an overview applications knowledge gaps across relevant contexts currently lacking. We conducted systematic review using combination terms regarding FR invasion science synthesise scientific studies apply the approach field suggest new areas where it could have valuable applications. Trends publications about general were compared through Activity Index. Data extracted from papers reveal temporal, bibliographic, geographic trends, patterns study attributes such as type interaction habitat investigated, taxonomic groups used, context-dependencies assessed. In total, 120 included review. identified substantial unevenness reporting FRs science, despite rapidly growing number studies. To date, geographically skewed towards North America Europe, well predator-prey interactions freshwater habitats. Most focused on few invertebrates fishes. Species origin, life stage, environmental temperature complexity most frequently considered context-dependencies. conclude while thus far narrowly applied, broad potential application can be used test major hypotheses field.

Language: Английский

Citations

19
Feeding Behaviour of the Mite Blattisocius mali on Eggs of the Fruit Flies Drosophila melanogaster and D. hydei DOI Creative Commons
Katarzyna Michalska,

Agnieszka Mrowińska,

Marcin Studnicki

et al.

Diversity, Journal Year: 2023, Volume and Issue: 15(5), P. 652 - 652

Published: May 11, 2023

Many predatory mites use insects for dispersal; however, their possible negative effects on insect hosts during transportation and offspring while preying in the hosts’ habitats are still poorly understood. A recent study has revealed that mite Blattisocius mali can not only spread by means of drosophilid fruit flies but also feed bodies dispersal. The aim this was to examine capability B. prey upon eggs fly determine effect egg’s age voracity predator. Drosophila melanogaster oviposited agar media 1 h D. hydei 8 or 16 h. During 10-h experiments with fifteen per cage, a single female predator totally consumed average 3.62 ± 0.673 “1-h” 3.00 0.612 “8-h” hydei, it partially 2.75 0.586 each species. In involving destroyed similar number “16-h” eggs, significantly more younger than older eggs. Ethological observations showed returned some fed usually from side where first puncture made, then did they consume them whole.

Language: Английский

Citations

5
Short handling times allow for active prey selection in suspension feeding copepods DOI Creative Commons
Fredrik Ryderheim, Uffe Høgsbro Thygesen, Thomas Kiørboe

et al.

Limnology and Oceanography, Journal Year: 2023, Volume and Issue: 68(4), P. 891 - 901

Published: Feb. 13, 2023

Abstract The time it takes copepods to handle prey can vary depending on the properties of prey, but is still largely unknown how handling times may affect copepod feeding efficiency. We compiled data prey‐handling derived from video observations in 10 species calanoid and cyclopoid consuming a large variety prey. Prey‐handling by five orders magnitude, largest fraction this variation explained relative size: larger longer handle. When normalized volume (volume handled per unit time), however, are more efficiently than smaller Within overarching pattern there distinct differences among species. Thus, certain size much faster small However, when further normalizing predator size, for all (except Mesocyclops spp.) collapse common relationship. Handling generally not limiting maximum consumption rates, less so This allows room selectivity, indeed known be highly selective feeders. Our predict that afford limited encounter rate, consistent with behavior. argue fast allow optimize their diet through one key evolutionary success pelagic copepods.

Language: Английский

Citations

3
Adaptive experimental design produces superior and more efficient estimates of predator functional response DOI Creative Commons
Nikos E. Papanikolaou, Hayden Moffat, Argyro A. Fantinou

et al.

PLoS ONE, Journal Year: 2023, Volume and Issue: 18(7), P. e0288445 - e0288445

Published: July 20, 2023

Ecological dynamics are strongly influenced by the relationship between prey density and predator feeding behavior-that is, predatory functional response. A useful understanding of this requires us to distinguish competing models response, robustly estimate model parameters. Recent advances in topic have revealed bias comparison, as well parameter estimation response studies, mainly attributed quality data. Here, we propose that an adaptive experimental design framework can mitigate these challenges. We then present first practical demonstration improvements it offers over standard design. Our results reveal efficiently identify preferred among models, produce much more precise posterior distributions for estimated By increasing efficiency experimentation, will lead reduced logistical burden.

Language: Английский

Citations

1
Changes in prey body size differentially reduces predation risk across predator and prey abundances DOI Open Access
Edd Hammill,

Kayla Hancey,

Michael H. Cortez

et al.

Oikos, Journal Year: 2023, Volume and Issue: 2023(10)

Published: July 11, 2023

Trophic interactions underpin the structure of ecological communities by describing rates at which consumers exploit their resources. The predators consume prey are influenced traits, with many species inducing defensive modifications to traits following threat predation. Here we use different clonal lines protist Paramecium being consumed Stenostomum highlight how differences in impact Clonal differed body width and ability induce changes width. By using a factorial cross predator abundances for demonstrate evolutionary or induced alterations can relative Our experiments show interference among impacts predation rate, increased handling times. Given that reductions strength interspecific associated levels overall community stability, our results indicate individual level may scale up whole communities.

Language: Английский

Citations

0
Intraspecific interactions at high predator densities affect the predation efficiency ofNeoseiulus californicus(Acari: Phytoseiidae) when prey density is low DOI
Nikos E. Papanikolaou, George D. Broufas, Theodore Kypraios

et al.

Ecological Entomology, Journal Year: 2022, Volume and Issue: 47(5), P. 770 - 777

Published: May 17, 2022

Abstract Quantifying functional responses is a cornerstone in evaluating the predation efficiency of biological control agents such as predatory insects and mites. In this study, we investigate whether Neoseiulus californicus (Acari: Phytoseiidae) consuming prey driven by intraspecific interactions. For purpose, laboratory response experiments were conducted using one, two, three or four predators at several initial egg densities two‐spotted spider mite, Tetranychus urticae Tetranychidae). The data fitted to predator‐dependent Crowley–Martin model which accounts for results suggest that high densities, i.e. predator satiated, interactions did not affect potential N . , maximum number T. eggs can be attacked individuals differ between treatments (i.e., densities). However, low highest density individuals), detected, revealed estimated attack rates, per capita consumption densities. While mean rates significantly when two exposed prey, increased individuals, rate was considerable lower compared other These indicate are more intense where satiated therefore digestion breaks do exist. contrast, exist, so may fully accommodate cost also should considered measured.

Language: Английский

Citations

0