Incidence and Seasonal Fluctuation of True Spiders Inhabiting Different Orchard Trees at Sohag Governorate

An update of the spider species associated with the most cultivated crops in Shandaweel district, Sohag Governorate, Egypt, with a focus on spider's incidence in dominant and stable habitats in the district; weeds, hlafa grass, citrus trees and ornamental plants during 2016 and 2017 years were illustrated. 18 families, 27 genera and 21 species were identified from 951 individuals (471 males & 480 females) and 2057 immature with total numbers of 3003 individuals during the study period. Salticidae, Cheiracanthiidae and Dictynidae families were the most dominant with frequency percentage of 38.86%, 11.52 % and 10.86 % respectively. Some families identified to genus or family level only like Oecobiidae, Oxyopidae, Pisauridae and Tetragnathidae. This study was also conducted to estimate the population fluctuation of spider families in Sohag Governorate over the two successive years, 2016 and 2017. The spider families reached the highest peaks on weeds in

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Occurrence and Abundance of Spiders in Various Agricultural Formations at Sohag Governorate, Egypt

El-Gepaly

Sallam

Mohamed

et al. 2018

Acarines: Journal of the Egyptian Society of Acarology

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Occurrence of Ootheca of Mantids and Their Natural Enemies in Citrus Orchards in Sohag, Egypt

El-Gepaly¹

2020

Egyptian Academic Journal of Biological Sciences. A, Entomology

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The giant African mantis, Sphodromantis viridis Forsskål, 1775 (Mantodea: Mantidae) was the most observed species of praying mantis in citrus orchards at Sohag Governorate, Egypt during 2017 and 2018 years. Besides, the Egyptian praying mantis, Miomantis paykulii (Stal, 1871) and the European mantis, Mantis religiosa, were observed in rare numbers. About 530 and 575 oothecae of mantis were collected in 2017 and 2018 respectively from about 46 hectares of citrus. The incubation of these oothecae resulted in complex fauna consisting of four hymenopteran parasitoids, Podagrion sp. (Torymidae: Hymenoptera), formicidae & Eupelmidae (Hymenoptera) and other hymenopteran specie, also four spider predators and Scolothrips sp. were found. Among the collected oothecae, totals of 28 and 25 oothecae hatched to mantis nymphs producing totals of 1536 and 1318 nymph/year for 2017 and 2018 years respectively. Podagrion sp. was the most common parasitic specie and the highest mean number of parasitoids/ootheca was in November with an average of 88 and 116 parasitoid/ootheca for 2107 and 2018 years respectively. Spiders were the most frequent among the oothecae fauna, as the spiders have emerged from the oothecae in the juvenile phase or adult. Incomplete parasitism was calculated after dissection of oothecae, the highest parasitism rate of oothecae was in May and March for 2017 and 2018 years, while the lowest rate was recorded in September for both years.

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Incidence and Seasonal Fluctuation of True Spiders Inhabiting Different Orchard Trees at Sohag Governorate

Cited by 2 publications

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Occurrence and Abundance of Spiders in Various Agricultural Formations at Sohag Governorate, Egypt

Occurrence and Abundance of Spiders in Various Agricultural Formations at Sohag Governorate, Egypt

Occurrence of Ootheca of Mantids and Their Natural Enemies in Citrus Orchards in Sohag, Egypt

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