Document Details

Document Type : Article In Journal 
Document Title :
Predaceous and :Parasitic, Ground-dwelling Arthropods in Different Ecosystems in Western Saudi Arabia
المفترسات والطفيليات من مفصليات الأرجل التي تقطن التربة في أنظمة بيئية مختلفة بالمنطقة الغربية من المملكة العربية السعودية
 
Subject : Zoology 
Document Language : English 
Abstract : Populations of predaceous and parasitic ground-dwelling arthropods have been investigated in three ecosystems: a) natural ecosystem of uncultivated land, b) a continuously cultivated vegetable agroecosystem and c) a permanent agroecosystem of date palm-citrus orchard during an 8 monthspepod starting October 1985 through May 1986 by pitfall trapping to determine their species composition and abundance. Araneae, Formicid~ e., Histeridae and Carabidae were consistently the most abundant of the preda"eous-parasitic arthropod complex. From data analysis Chi square (X2) the ratio of the arthropod taxa present in the three ecosystems showed high significant differences at 1 "I" level of probability. The composition of this complex did not vary in the three ecosystems, but their respective numbers have declined at the onset of winter (November to De, cember). True Spider (Araneae) represented oj distinct group averaged 39.4% and one family of them, the Lycosidae, hilS amounted for 72:1% of all true spiders, harvestmen and sunspiders put10gether. 
ISSN : 1012-1319 
Journal Name : Science Journal 
Volume : 3 
Issue Number : 1 
Publishing Year : 1411 AH
1991 AD 
Number Of Pages : 7 
Article Type : Article 
Added Date : Sunday, October 11, 2009 

Researchers

Researcher Name (Arabic)Researcher Name (English)Researcher TypeDr GradeEmail
عبدالرحمن فرج الله A. A. FARAGALLAResearcher  
محمد عمر طاهرM. O. TAHERResearcher  

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