گزارش حضور اسفنج Clathria sp روی کلنی های زنده مرجان در جزیره کیش، خلیج فارس

نوع مقاله : زیست شناسی (جانوری)


1 گروه علوم دریایی، دانشکده منابع طبیعی و محیط زیست، واحد علوم و تحقیقات، دانشگاه آزاد اسلامی، تهران، ایران

2 موسسه زیست شناسی دریا هاوایی، کانیوهه، امریکا


آبسنگ­ های مرجانی جزو متنوع ­ترین و پرتولید ­ترین اکوسیستم­ های دریایی می­ باشند که فاکتورهای زیستی و غیر ­زیستی مختلفی سلامت و حیات این اکوسیستم­ ها را تهدید می­ کنند. یکی از فاکتورهای زیستی موثر در تخریب مرجان­ ها، حضور موجوداتی است که بر روی کلنی­ های مرجان، توانایی زندگی و رشد دارند. Clathria sp نوعی اسفنج قشری است که توانایی رشد روی سطح کلنی­ های زنده مرجان را دارد و به­ نظر می­ رسد با تولید ترکیبات سمی می ­تواند منجر به مرگ مرجان ­ها شود. در رابطه با حضور این نوع اسفنج روی اجتماعات مرجانی خلیج فارس اطلاعاتی در دسترس نیست و هدف از مطالعه حاضر بـررسی حضور آن روی کلنی ­های زنده مرجان­ های جزیره کیش می­ باشد. به این منظور، 4 ایستگاه در بخش ­های شرق تا جنوب­ شرقی جزیره کیش تعیین شد و در هر ایستگاه، در طول ترانسکت ­هایی به ­طول 20 متر، کلنی ­های مرجان به ­صورت مستقیم و تک به تک مورد بررسی بصری قرار گرفت. بر اساس نتایج اسفنج Clathria sp روی 18 درصد (9±) از کلنی­ هایPorites sp جزیره کیش حضور داشتند. 


عنوان مقاله [English]

The presence of Clathria sp. on living coral colonies in Kish Island, Persian Gulf

نویسندگان [English]

  • Mahsa Alidoost Salimi 1
  • Pargol Ghavam Mostafavi 1
  • Greta Aeby 2
  • Seyed Mohammad Reza Fatemi 1
1 Department of Marine Science, Faculty of Natural Resources and Environment, Science and Research Branch, Islamic Azad University, Tehran, Iran
2 Hawai of Institute of Marine Biology, Hawaii, Kāne‘ohe, USA
چکیده [English]

Coral reefs are one of the most important marine ecosystems and their health and resilience have been threatened by several biotic and abiotic factors. The presence of organisms that are capable of overgrowth on living corals is known as one of the destructive biotic factor. Clathria sp. is an encrusting sponge that can overgrow on living coral colonies and it has been suggested that Clathria sp. can lead to death of corals by producing toxin substances. However, there is a lack of information about the occurrence of this sponge in the Persian Gulf. The purpose of this study is to investigate its presence in the coral communities of Kish Island. Regarding the aim, four sites were selected in the eastern and southeastern parts of the Kish Island and at each site, 20 meters long transect was laid down and coral colonies were examined directly along the transect. Based on the result, Clathria sp. was observed on 18% (9 ±) of the colonies of Porites sp. in the coral carpet of Kish Island.

کلیدواژه‌ها [English]

  • Clathria sp
  • encrusting sponge
  • coral reefs
  • Porites sp
  • Kish Island
  • Persian Gulf
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