Effects of methyl parathion on red-winged blackbird (Agelaius Phoeniceus) incubation behavior and nesting success

1990 ◽  
Vol 9 (6) ◽  
pp. 807-813 ◽  
Author(s):  
S. Mark Meyers ◽  
John L. Cummings ◽  
Richard S. Bennett
Keyword(s):  
Methyl Parathion ◽  
Nesting Success ◽  
Agelaius Phoeniceus ◽  
Incubation Behavior

Optimal niche space of the redwinged blackbird (Agelaius phoeniceus). I. Nesting success in marsh and upland habitat

1972 ◽  
Vol 50 (2) ◽  
pp. 247-263 ◽  
Author(s):  
Raleigh J. Robertson
Keyword(s):  
Nesting Success ◽  
Predation Pressure ◽  
Agelaius Phoeniceus ◽  
Breeding Density ◽  
Niche Space ◽  
Fundamental Niche ◽  
Nesting Density ◽  
Different Parts

Survival value of different parts of the fundamental niche of the redwinged blackbird was determined by comparing nesting success in marsh and upland habitats. Marsh nesting populations had greater success than those in uplands because of a smaller proportion of nests destroyed by predators. Predation pressure in marshes was negatively correlated with the depth of water beneath the nest, and the synchrony and density of nesting in marshes in some cases has a swamping effect on local predator populations. The structure and phenology of marsh compared with upland vegetation is an important factor in determining nesting density and synchrony.Growth rates of nestlings and weight at fledging are similar between habitats. Genetic separation between marsh and upland populations is unlikely. Territoriality probably results in a limitation to breeding density in both habitats.The results support the hypothesis that where sympatric, redwings are excluded from their optimal niche space by yellow-headed blackbirds.

Inheritance of Resistance to Methyl Parathion in Sorgo 1

Crop Science ◽  
1964 ◽  
Vol 4 (4) ◽  
pp. 371-372 ◽  
Author(s):  
Otto H. Coleman ◽  
Jack L. Dean
Keyword(s):  
Methyl Parathion ◽  
Inheritance Of Resistance

Interactive toxic effects of agrochemicals on aquatic organisms

1999 ◽  
Vol 40 (1) ◽  
pp. 357-364 ◽  
Author(s):  
A. Kungolos ◽  
P. Samaras ◽  
A. M. Kipopoulou ◽  
A. Zoumboulis ◽  
G. P. Sakellaropoulos
Keyword(s):  
Daphnia Magna ◽  
Marine Bacterium ◽  
Methyl Parathion ◽  
Vibrio Fischeri ◽  
Interactive Effect ◽  
Algal Growth ◽  
Aquatic Organisms ◽  
Interactive Effects ◽  
Selenastrum Capricornutum ◽  
Toxic Compound

The effects of three common agrochemicals, lindane, methyl parathion and atrazine, on crustacean Daphnia magna, alga Selenastrum capricornutum and marine bacterium Vibrio fischeri were investigated in this study. Methyl parathion was the most toxic compound towards all three organisms, while lindane was more toxic to Daphnia magna and Vibrio fischeri than atrazine, and atrazine was more toxic to Selenastrum capricornutum than lindane. Among the three aquatic organisms, Selenastrum capricornutum was most sensitive in detecting lindane and atrazine toxicity, while Daphnia magna was most sensitive in detecting methyl parathion toxicity. The interactive effects of the pesticides were also investigated. The interactive effect between lindane and methyl parathion on survival of Daphnia magna was synergistic, while the ones between lindane and atrazine and between methyl parathion and atrazine were generally additive. The interactive effect of the three pesticides applied together on Daphnia magna was synergistic. The interactive effect of the three pesticides on the growth of Selenastrum capricornutum was antagonistic with few cases of addition, while the effect of all the three pairs of pesticides on algal growth was also antagonistic. The interactive effect of lindane and methyl parathion on Vibrio fischeri was additive.

Red-winged Blackbird (Agelaius phoeniceus)

2020 ◽  
Author(s):  
Ken Yasukawa ◽  
William A. Searcy
Keyword(s):  
Agelaius Phoeniceus
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