کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5758185 | 1412747 | 2016 | 40 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Lowered temperature and reduced salinity retarded development of early life history stages of Acropora valida from the marginal environment
ترجمه فارسی عنوان
کاهش دما و کاهش رشد شوری از مراحل اولیه زایمان آکوپورا را از محیط حاشیه ای انتخاب کنید
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کلمات کلیدی
هنگ کنگ، میزان رشد جنین مرجان ها، انحراف رشد، آکروپورا، درجه حرارت، شوری
موضوعات مرتبط
مهندسی و علوم پایه
علوم زمین و سیارات
اقیانوس شناسی
چکیده انگلیسی
To better understand the possible consequences of the co-occurrence of salinity and temperature stresses on reef building corals in subtropical marginal environment, laboratory based experiments were conducted on early embryonic developmental success of the newly fertilized eggs of Acropora valida from Hong Kong under different interactive temperature [24, 27 (ambient), 30 °C] and salinity [33 psu (ambient), 30, 28, 26 psu] treatments. Our results showed the effect of temperature to be comparatively stronger than that of salinity in affecting rate of embryonic development. There was a 4 h delay in embryonic development at lowered (24 °C) and slightly accelerated development at elevated (30 °C) temperatures. In addition, the interaction of temperature and salinity significantly affected the proportion of abnormal embryos. At 27 °C and 30 °C, the percentage of developmental abnormalities was generally low (<25 %) in salinities that ranged from 33 to 28 psu. A significant increase was observed at 26 psu treatment. Similar low level of abnormal embryonic development was observed at 24 °C except that increased abnormalities were already observed at a higher salinity of 28 psu. These results demonstrated that lowered temperature and reduced salinity (24 °C and 26 psu) have the potential to negatively impact the reproductive success of this coral species, and would ultimately lead to substantial decline in sexual recruitment. Such negative impact, however, could be alleviated under a warmer ocean, therefore allowing the persistence of this coral species in the long-term. These results are important for a better understanding of the possible consequences of climate change on reef building scleractinian corals in a subtropical marginal environment like Hong Kong.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Regional Studies in Marine Science - Volume 8, Part 3, November 2016, Pages 430-438
Journal: Regional Studies in Marine Science - Volume 8, Part 3, November 2016, Pages 430-438
نویسندگان
Apple Pui Yi Chui, Chung Wing Yeung, Ryan Ho Leung Tsang, Yu Hin Leung, Tsz Yan Ng, Ka Ho Chai, Put Jr.,