How Predator Incursions Affect Critical Patch Size: The Role of the Functional Response

2001 ◽  
Vol 158 (4) ◽  
pp. 368-375 ◽  
Author(s):  
Robert Stephen Cantrell ◽  
Chris Cosner ◽  
William F. Fagan
Keyword(s):  
Functional Response ◽  
Patch Size ◽  
Critical Patch Size

scholarly journals Functional response of Harmonia axyridis preying on Acyrthosiphon pisum nymphs: the effect of temperature

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Yasir Islam ◽  
Farhan Mahmood Shah ◽  
Xu Rubing ◽  
Muhammad Razaq ◽  
Miao Yabo ◽  
...  
Keyword(s):  
Functional Response ◽  
High Performance ◽  
Acyrthosiphon Pisum ◽  
Harmonia Axyridis ◽  
Effect Of Temperature ◽  
Functional Responses ◽  
Aphid Control ◽  
Host Aphid ◽  
Predator Foraging

AbstractIn the current study, we investigated the functional response of Harmonia axyridis adults and larvae foraging on Acyrthosiphon pisum nymphs at temperatures between 15 and 35 °C. Logistic regression and Roger’s random predator models were employed to determine the type and parameters of the functional response. Harmonia axyridis larvae and adults exhibited Type II functional responses to A. pisum, and warming increased both the predation activity and host aphid control mortality. Female and 4th instar H. axyridis consumed the most aphids. For fourth instar larvae and female H. axyridis adults, the successful attack rates were 0.23 ± 0.014 h−1 and 0.25 ± 0.015 h−1; the handling times were 0.13 ± 0.005 h and 0.16 ± 0.004 h; and the estimated maximum predation rates were 181.28 ± 14.54 and 153.85 ± 4.06, respectively. These findings accentuate the high performance of 4th instar and female H. axyridis and the role of temperature in their efficiency. Further, we discussed such temperature-driven shifts in predation and prey mortality concerning prey-predator foraging interactions towards biological control.

scholarly journals Critical Role of TLR2 and MyD88 for Functional Response of Macrophages to a Group IIA-Secreted Phospholipase A2 from Snake Venom

PLoS ONE ◽  
2014 ◽  
Vol 9 (4) ◽  
pp. e93741 ◽  
Author(s):  
Elbio Leiguez ◽  
Karina Cristina Giannotti ◽  
Vanessa Moreira ◽  
Márcio Hideki Matsubara ◽  
José María Gutiérrez ◽  
...  
Keyword(s):  
Phospholipase A2 ◽  
Functional Response ◽  
Snake Venom ◽  
Critical Role ◽  
Secreted Phospholipase A2

Role of nematodes in the food web: nematodes as predator and prey.

2021 ◽  
pp. 216-246
Author(s):  
Christoph Ptatscheck
Keyword(s):  
Food Web ◽  
Functional Response ◽  
Trophic Interactions ◽  
Individual Species ◽  
Energy Fluxes ◽  
Direct Observations ◽  
Microcosm Studies

Abstract This chapter provides information on the role of nematodes in the food web, including their participation in matter and energy fluxes within ecosystems. It highlights that nematodes are both predators and prey for organisms ranging from protozoans to vertebrates, based on gut analyses and direct observations. Functional response experiments, microcosm studies, and enclosures/exclosures in the field can be used to investigate the intensity of these trophic interactions and their impact on individual species as well as entire communities.

scholarly journals Critical patch size reduction by heterogeneous diffusion

2020 ◽  
Vol 102 (4) ◽  
Author(s):  
M. A. F. dos Santos ◽  
V. Dornelas ◽  
E. H. Colombo ◽  
C. Anteneodo
Keyword(s):  
Patch Size ◽  
Size Reduction ◽  
Critical Patch Size

scholarly journals The role of patch size in ecosystem engineering capacity: a case study of aquatic vegetation

2019 ◽  
Vol 81 (3) ◽  
Author(s):  
Sofia Licci ◽  
Heidi Nepf ◽  
Cécile Delolme ◽  
Pierre Marmonier ◽  
Tjeerd J. Bouma ◽  
...  
Keyword(s):  
Patch Size ◽  
Aquatic Vegetation ◽  
Ecosystem Engineering
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