زیست‌شناسی و الگوی غذایی گونه آسیبپذیر وزغ تالشی (Bufo eichwaldi) (Amphibia; Anura; Bufonidae) در ایران
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Abstract:
چکیده دوزیستان شکارچیان فرصتطلبی هستند که از منابع غذایی با فراوانی بیشتر در محیط اطرافشان تغذیه میکنند. این گروه، به‌دلیل تغذیه از حشرات، دارای اهمیت بسزایی در تعادل و کنترل بیولوژیکی آفات کشاورزی اکوسیستمهای مختلف هستند. در این تحقیق که در سال 1395 در شمال غرب استان گیلان انجام گرفت، ضمن بررسی وضعیت زیستی گونه در معرض آسیب وزغ تالشی (Bufo eichwaldi)، محتویات معده57 نمونه، به روش شستشوی معده (stomach flushing) بررسی و الگوی غذایی این گونه مشخص گردید. 642 گزینه غذایی(عمدتاً بیمهرگان) و غیر غذایی (بقایای گیاهی و سنگریزه) از محتویات معده جمع‌آوری و شناسایی گردید. گزینههای غذایی مربوط به 4 شاخه جانوری، عمدتاً بندپایان (3/83%) و 7 رده بودند که رده حشرات با 14 راسته، و در بین آنها، راسته بال غشائیان (Hymenoptera) و قاببالان (Coleoptera) دارای بیشترین مشاهده بودند که تنوع بالای گزینههای غذایی این گونه انعکاسی از تنوع بالای بیمهرگان منطقه مورد مطالعه است. هر چند منطقه مورد مطالعه دارای شرایط اقلیمی مناسب زیست این گونه میباشد، اما متأسفانه در سالیان اخیر فعالیتهای انسانی، بهخصوص تخریب زیستگاه، باعث کاهش تعداد این گونه آسیبپذیر شده، به گونهای که اخیراً در فهرست گونههای در معرض آسیب IUCN قرار گرفته است.
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Journal title
volume 7 issue 2
pages 45- 53
publication date 2018-11-22
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