scholarly journals Seasonal Occurrence of Oligota kashmirica benefica NAOMI (Coleoptera: Staphylinidae) on Arrowroot and Effect of Prey Consumption Rate on Development and Oviposition.

1993 ◽  
Vol 37 (2) ◽  
pp. 75-82 ◽  
Author(s):  
Takeshi SHIMODA ◽  
Norizumi SHINKAJI ◽  
Hiroshi AMANO
Keyword(s):  
Consumption Rate ◽  
Prey Consumption ◽  
Seasonal Occurrence ◽  
Oligota Kashmirica Benefica

scholarly journals Predation rate of Thrips tabaci larvae by Neoseiulus cucumeris is influenced by prey density and presence of a host plant

2014 ◽  
Vol 67 ◽  
pp. 197-203
Author(s):  
M-C. Nielsen ◽  
M.M. Davidson ◽  
R.C. Butler
Keyword(s):  
Host Plant ◽  
Prey Density ◽  
Consumption Rate ◽  
Predation Rate ◽  
Prey Consumption ◽  
Thrips Tabaci ◽  
Neoseiulus Cucumeris ◽  
Onion Bulbs ◽  
Consumption Data ◽  
Negative Effect

Prey consumption rate by natural enemies may be affected by the preys host plant and prey density The predation rate of the mite Neoseiulus cucumeris at different densities of firstinstar Thrips tabaci larvae in the presence (onion) or absence (green plastic) of a host was measured In the first experiment using a disc bioassay N cucumeris exhibited a typeII densitydependent functional response to prey on both disc types Prey consumption was reduced on onion relative to plastic A second experiment using onion bulbs and green plastic bulbs indicated a decrease in the consumption rate on plastic bulbs compared with plastic discs The survival or recapture of N cucumeris on onion bulbs was less than 7 and no prey consumption data were obtained The results indicate that onion as a host plant has a negative effect on consumption of T tabaci by N cucumeris and on survival of the predator mite

scholarly journals Pachycondyla obscuricornis as natural enemy of the spittlebug Deois flavopicta

2004 ◽  
Vol 39 (6) ◽  
pp. 607-609 ◽  
Author(s):  
Edison Ryoiti Sujii ◽  
Maria Alice Garcia ◽  
Eliana Maria Gouveia Fontes ◽  
Robert James O'Neil
Keyword(s):  
Aggressive Behavior ◽  
Foraging Behavior ◽  
Natural Enemy ◽  
Field Data ◽  
Consumption Rate ◽  
Predation Rate ◽  
Prey Consumption ◽  
Potential Control ◽  
Recruitment Behavior

The objective of this work was to evaluate the potential control of the ant Pachycondyla obscuricornis Emery (Hymenoptera Formicidae) on populations of nymphs of the spittlebug, Deois flavopicta Stal (Hemiptera Cercopidae). Foraging behavior and prey consumption rate of P. obscuricornis were evaluated. Field data revealed that P. obscuricornis does not show aggressive behavior against individuals of the same species, when they are not carrying a prey; they can patrol distances larger than 10 m searching for prey, and they can build their nest as close as 1 m from each other. The ant has a solitary patrolling habit, there is no recruitment behavior, and individuals dislocate fast, browsing on soil and vegetation for prey. Predation rate on spittlebug nymphs increased relative to the spittlebug abundance, reaching 93.8% of captured prey. Pachycondyla obscuricornis is a voracious predator and may control the population of spittlebugs in cultivated pastures.

scholarly journals Hierarchical Functional Response of a Forager on a Wetland Landscape

2021 ◽  
Vol 9 ◽  
Author(s):  
Donald L. DeAngelis ◽  
Simeon Yurek ◽  
Stephen Tennenbaum ◽  
Hyo Won Lee
Keyword(s):  
Functional Response ◽  
Time Scale ◽  
Consumption Rate ◽  
Prey Consumption ◽  
Water Levels ◽  
Hierarchical Level ◽  
Short Time Scale ◽  
Functional Responses ◽  
Wetland Landscape ◽  
Wading Bird

We show that for some foragers the form that a functional response takes depends on the temporal and spatial scales considered. In representing the consumption rate of an organism, it may be necessary to use a hierarchy of functional responses. Consider, for example, a wading bird foraging in wetland landscape characterized by a spatial distribution of potential foraging sites, such as ponds. At the smallest time scale of minutes or hours, during which a wading bird is foraging within a single site, the functional response will reflect the local density of prey, as well as features of the site that affect the feeding rate, such as water depth. At this short time scale, which is determined by the giving up time of the wading bird in a particular site, prey density may be relatively constant. The food intake from a particular pond is then the product of the time spent before giving-up time and moving to another site and the rate of prey consumption at that site. A prey-centered functional response is most appropriate for describing the prey consumption rate. We propose that over the longer time scale of a day, during which a wading bird may visit several foraging sites, the type of functional response can be considered to be patch centered. That is, it is influenced by the spatial configuration of sites with available prey and the wading bird’s strategy of choosing among different sites and decisions on how long to stay in any given sites. Over the time scale of a day, if the prey densities stay relatively constant, the patch-centered functional response for a constant environment is adequate. However, on the longer time scale of a breeding season, in which changing water levels result in temporal changes in the availability of prey in sites, a third hierarchical level may be relevant. At that scale, the way in which the landscape pattern changes through time, and how the wading bird responds, influences the functional response. This hierarchical concept applies to a colony of breeding wading birds foraging in wetlands such as the Everglades.

Seasonal occurrence and hatching of calanoid eggs in sediments of the northern Baltic Sea

1998 ◽  
Vol 171 ◽  
pp. 133-143 ◽  
Author(s):  
T Katajisto ◽  
M Viitasalo ◽  
M Koski
Keyword(s):  
Baltic Sea ◽  
Seasonal Occurrence

Birds eaten by King James V of Scotland in 1525–1533, and the prices decreed by his daughter Mary Queen of Scots in 1551

2006 ◽  
Vol 33 (1) ◽  
pp. 135-139
Author(s):  
W. R. P. Bourne
Keyword(s):  
Quantitative Information ◽  
Seasonal Occurrence ◽  
Household Accounts

The household accounts of King James V of Scotland provide the first quantitative information on the seasonal occurrence of birds there, and some first records.

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