Effect of Prey Density and Insecticides on Prey Consumption by Cyrtophora citricola (Araneae: Araneidae)
نویسندگان
چکیده
منابع مشابه
The Influence of Otolithes ruber Consumption on Prey and Comparison with that Harvested by Fisheries
The Otolithes ruber is considered a valuable fish in the Indo-West Pacific. Estimates of the Q/B ratio and parameters of equations to ‘predict’ Q/B values for O. ruber in northwestern part of the Persian Gulf and the effects of different age-groups (age 1 to 6 year) on prey are presented. The age and food item of O. ruber were recorded on data collected from monthly samplings by bottom tra...
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—Reduced suspended-sediment loads (i.e., turbidity) in many Midwestern prairie rivers have been hypothesized as contributing to the replacement of species that historically occupied highly turbid main-channel habitats by visually feeding species that are competitively superior in less-turbid waters. We examined the relationship between prey consumption and turbidity for six fish species from th...
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A number of studies show that predators can depress prey growth rates by inducing reductions in foraging activity, but the size of this non-lethal effect is quite variable. Here I investigate how prey density and resource productivity may alter the extent to which predators depress the growth rates of their prey. Theory predicts that when resources are overgrazed, an increase in predation risk ...
متن کاملBacterial predator-prey interaction at low prey density.
A bacterial predator-prey interaction was studied using Bdellovibrio and bioluminescent prey bacteria. The attacking bdellovibrio causes decay of bioluminescence, which is correlated with bdellovibrio penetration into the prey. The behavior of the prey and predator populations over time was found to be well described by a Lotka-Volterra model. By using this model, the probability of bdellovibri...
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ژورنال
عنوان ژورنال: Pakistan Journal of Zoology
سال: 2018
ISSN: 0030-9923
DOI: 10.17582/journal.pjz/2018.50.4.1387.1392