بوم شناسی حلزونهای خانواده لیمنه ایده و تأثیر برخی شاخصهای شیمیایی بر پراکنش آنها در زیستگاههای آبی استان آذربایجان غربی

نویسندگان

1 گروه پاتوبیولوژی، دانشکده دامپزشکی دانشگاه تبریز، تبریز- ایران

2 گروه پاتوبیولوژی، دانشکده دامپزشکی دانشگاه ارومیه ، ارومیه- ایران

3 پژوهشکده آرتمیا و جانوراد آبزی دانشگاه ارومیه، ارومیه- ایران

4 گروه زراعت و اصلاح نباتات، دانشکده کشاورزی دانشگاه ارومیه، ارومیه- ایران

چکیده

زمینه مطالعه: گونه‌های مختلفی از حلزون‌های پولموناتای آب شیرین خانوادۀ لیمنه‌ایده به عنوان میزبان واسط ترماتودهای دی ژه نه‌آ در دنیا و ایران مطرح می‌باشند. هدف: از اهداف این تحقیق بوم شناسی حلزون‌های لیمنه ایده و تأثیر متغیرهای فیزیکی و شیمیایی آب بر پراکنش و تراکم جمعیتی آنها بود. روش کار: حلزون‌های لیمنه‌ ایده به روش تصادفی خوشه‌ای از 16 منبع آبی استان آذربایجان غربی جمع‌آوری و شناسایی شدند. آب زیستگاه‌ها نیز نمونه برداری و آنالیز شیمیائی گردیدند. نتایج: گونه‌های مختلف حلزون‌های لیمنه‌ایده در زیستگاه‌های تحت مطالعه به جز در فصل زمستان، پراکنش مشابهی در آب‌های با جریان آرام نهرها یا تالا‌ب‌های با آب راکد داشتند. تراکم حلزون‌های لیمنه‌آ اوریکولاریا، لیمنه‌آ گدروزیانا و لیمنه‌آ استاگنالیس در دو نیمه سال در بین ایستگاه‌های مختلف اختلاف معنی‌دار داشت. غلظت نیترات و کلسیم به ترتیب با تراکم و اندازه حلزون‌ها همبستگی نسبتاً بالایی داشتند. در حالی که همبستگی بین نیتریت یا فسفات با تراکم جمعیتی و یا اندازه حلزون‌ها وجود نداشت. نتیجه گیری نهایی: نتایج بیانگر تأثیر فصل، شاخص‌های فیزیکی و شیمیایی بر پراکنش و تراکم جمعیتی حلزون‌ها در استان بود که می‌توانند برای اجرای برنامه‌های کنترلی بر ضد ترماتودهای انگلی در منطقه مفید باشند.

کلیدواژه‌ها


عنوان مقاله [English]

Ecology of snail family Lymnaeidae and effects of certain chemical components on their distribution in aquatic habitats of West Azarbaijan, Iran

نویسندگان [English]

  • Abbas Imani Baran 1
  • Mohammad Yakhchali 2
  • Reza MalekzadehViayeh 3
  • Baharak Sehhatnia 3
  • Reza Darvishzadeh 4
1 Department of Pathobiology, Parasitology division, Faculty of Veterinary Medicine, Tabriz University, Tabriz- Iran
2 Department of Pathobiology, Parasitology division, Faculty of Veterinary Medicine, Nazlu campus, Urmia University, Urmia- Iran
3 Artemia and Aquatic Animals Research Institute, Urmia University, Urmia- Iran
4 Department of Agronomy and Plant breeding, Faculty of Agriculture, Urmia University, Urmia- Iran
چکیده [English]

BACKGROUND: Freshwater pulmonate family Lymnaeidae are well-known for their role in transmission of diginean trematodes worldwide. Objectives: The study was aimed to investigate the ecology and effects of physical and chemical components of the environment on their distribution and populaion density. Methods: The lymnaeid snails were randomly collected from 16 freshwater habitats in West Azarbaijan Province and water samples were also provided from the habitats for chemical analysis. Results: The distribution patterns of the lymnaeid snails in all the examined sites were almost identical throughout the year except in winter. The snails were mostly found in lentic waters or slow-moving streams with muddy beds. The population densities of Lymnaea auricularia, L. gedrosiana and L. stagnalis significantly differed among the investigated waters during the course of study. The concentration of nitrate had significant positive correlations with the snails’ density while there was no significant correlation between nitrite or phosphate concentration with the population density and body size. Conclusions: The results indicated that distribution and density of the snails were affected by season and physicochemical characteristics of environments. These results can be useful for launching the control programs against parasitic trematodes in the region.

کلیدواژه‌ها [English]

  • Ecology
  • Lymnaeidae
  • snail
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