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30 September 2021 How soil abiotic factors affect the population fluctuation of Leitneria pugio (Acari: Mesostigmata: Halolaelapidae)
Sahebeh Ghasemi-Moghadam, Ali Ahadiyat, Yaghoub Fathipour, Alireza Saboori
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Abstract

Abiotic factors, such as temperature, humidity, soil elements, along with biotic factors affect terrestrial arthropod communities. Since the application of agricultural fertilizers with the entrance of different elements causes changes in the soil physicochemical conditions, fertilizers may cause fluctuation in the population density of edaphic arthropods. Given this opinion, in this research, the effect of common fertilizers on the population fluctuation and distribution pattern of the predatory mite Leitneria pugio (Karg) was investigated. The experimental treatments were granular urea fertilizer with two doses (200 and 400 kg per ha), poultry manure, zinc sludge (to simulate the accumulation of zinc sulfate fertilizer in the soil), and control in five blocks. Humidity, pH, temperature, NO3 and NO2 , and elements (organic Carbon, K, Na, P, Fe, Cu, Pb, Cr, Cd, Ni, Zn, and As) of soil were measured, and their relationship with the predatory mite population was determined by Pearson correlation coefficient. Iwao's patchiness, Taylor's power law, and Morisita's coefficient of dispersion were used for determining the spatial distribution pattern of L. pugio. The spatial pattern of L. pugio was aggregated, and the highest population density of the predator was observed in December in zinc sludge and control treatments, and in May, in zinc sludge treatment, on the average 60, 35, and 110 per m2, respectively. The relationship between mite's population and Cu and Pb was significantly positive, and L. pugio had a significantly negative relationship with P, NO3 and soil temperature. Nevertheless, the application of different fertilizers did not affect the spatial distribution pattern of the predator.

Sahebeh Ghasemi-Moghadam, Ali Ahadiyat, Yaghoub Fathipour, and Alireza Saboori "How soil abiotic factors affect the population fluctuation of Leitneria pugio (Acari: Mesostigmata: Halolaelapidae)," Systematic and Applied Acarology 26(10), 1900-1912, (30 September 2021). https://doi.org/10.11158/saa.26.10.5
Received: 15 May 2021; Accepted: 15 June 2021; Published: 30 September 2021
KEYWORDS
community structure
heavy metals
minerals
Parasitiformes
population density
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