جنبه های زیست محیطی تعیین کننده غنای گونه های خانواده Dytiscidae

نوع مقاله : مقاله پژوهشی

نویسندگان

گروه علوم جانوری، دانشکده علوم، دانشگاه شهرکرد، شهرکرد، ایران

10.22034/aej.2023.378440.2922

چکیده

قاب بالان آبزی از خانواده (Dytiscidae) به عنوان قاب بالان غواص شکارچی شناخته می‌شوند. این گروه از حشرات با بیش از 4000 گونه بزرگ ترین و متنوع ترین خانواده از قاب بالان آبزی به شمار می روند. هدف از این مطالعه شناسایی جنبه های زیست محیطی موثر بر جمعیت این نوع قاب بالان آبزی بود. نمونه برداری ها به کمک ساچوک و تور مخصوص نمونه برداری به مدت یک سال در شش ایستگاه و در منطقه شهرکرد و در هر فصل از سال نمونه برداری شد و عوامل اکولوژیکی مانند دمای آب (WT)، مقدار pH آب و هدایت الکتریکی آب (EC) اندازه گیری گردید. دادها به کمک رگرسیون خطی و نیز از طریق تجزیه و تحلیل همبستگی کانونی (CAA) مورد بررسی قرار گرفتند. بای پلات‌های CCA و رگرسیون خطی نشان داد که دمای آب با ضریب همبستگی 1/336 قوی‌ترین تأثیر را بر توزیع گونه های خانواده Dytiscidae دارد (P<0/01). به علاوه، این مطالعه نشان داد که متغیرهای اندازه‌گیری شده (pH ،EC ،(WT متغیر های پیش‌بینی‌کننده‌ عالی در جهت غنای خانواده Dytiscidae بودند. نتایج پژوهش حاضر نشان داد که عوامل اکولوژیکی مؤثر بر غنای جمعیت خانواده Dytiscidae به شکل ذیل نشان داده می شود: دمای آب> EC آب> pH آب.

کلیدواژه‌ها

موضوعات

عنوان مقاله [English]

Environmental aspects determining richness of predaceous diving beetle species (Family Dytiscidae)

نویسندگان [English]

  • Mahsa Ebrahimian Dehkordi
  • Mohammad Saeed Heydarnejad
Department of Animal Sciences, Faculty of Science, Shahrekord University, Shahrekord, Iran
چکیده [English]

Aquatic beetles from the Dytiscidae family are known as predatory diving beetles. This group of insects, with more than 4000 species, is the largest and the most diverse family of aquatic insects. The aim of this study was to identify the environmental aspects affecting the population of this type of aquatic beetles. Sampling was done seasonally with the help of a net and a special sampling net for one year at six stations in the Shahrekord region, and ecological factors such as water temperature (WT), water pH and water electrical conductivity (EC) were measured. The data were analyzed with the help of linear regression and also through Canonical Correspondence Analysis (CCA). CCA bi-plots and linear regression showed that water temperature with a correlation coefficient of 1.336 has the strongest effect on the distribution of the aquatic beetles (P<0.01). In addition, this study showed that the measured variables (pH, EC, WT) are excellent predictor variables in the direction of the richness of the predaceous diving beetles. The results of the present study showed that the ecological factors affecting the richness of predaceous diving beetle population are shown as follows: water temperature > water EC > water pH

کلیدواژه‌ها [English]

  • Aquatic Coleoptera
  • ؛ Shahrekord
  • ؛ Dytiscidae
  • ؛ Ecological Factors؛
  • Iran

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فصلنامه محیط زیست جانوری
دوره 15، شماره 4
بهمن 1402
صفحه 317-322

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