Journal of Tropical Oceanography >
Effects of salinity on larval development of two common barnacles from the southeast coast of China
Received date: 2018-02-12
Online published: 2018-12-24
Supported by
Science Technology Department of Zhejiang Province Program (2017F50017);Promotion Program for Guangdong Provincial Ocean and Fishery Technology (A201701C06)
Copyright
The acorn barnacles Amphibalanus reticulatus and Tetraclita squamosa squamosa are common fouling species off the southeast coast of China, which play an important role in marine ecosystems. Understanding the effects of salinity on larval development of the two common barnacles will increase our knowledge on marine biology and may also provide data useful in the field of marine fouling control. In this study, the nauplius larvae of the barnacles A. reticulatus and T. squamosa squamosa were reared in seawater with salinities of 6‰, 12‰, 18‰, 24‰, 30‰ (Control), and 36‰, respectively. After being cultured for five days, the surviving individuals were counted, and their developmental stages were analyzed. The mean values of larval survival rate and the percentage of larvae at various developmental stages in the control and treatment groups were compared with the Least Significant Difference (LSD) test. The results showed significant negative impacts on larval development and survival of both species when the salinity was equal or less than or equal to 18‰. In the salinities of 6‰, 12‰ and 18‰, larval development was inhibited significantly, even to the point where all larvae died. If the salinity rose to 24‰ or higher, there was no significant difference in the larval survival rates of both barnacle species between the control and treatment groups. The salinity at 30‰ was the optimum for larval development of A. reticulatus. Moreover, the larvae of T. squamosa squamosa had greater tolerance to salinity stress with no significant differences occurred during its larval development among the groups in the salinities of 24‰, 30‰ and 36‰.
CAO Wenhao , YAN Jin , FENG Meiping , HAN Shuaishuai , LIN Mingqing . Effects of salinity on larval development of two common barnacles from the southeast coast of China[J]. Journal of Tropical Oceanography, 2018 , 37(6) : 85 -91 . DOI: 10.11978/2018019
Fig. 1 Larval survival rates of A. reticulatus at different salinities图1 不同盐度条件下网纹藤壶无节幼虫存活率 |
Fig. 2 The percentages of A. reticulatus larvae surviving at various developmental stages in different salinities图2 不同盐度条件下网纹藤壶各期无节幼虫百分比 |
Fig. 3 Larval survival rates of T. squamosa squamosa at different salinities图3 不同盐度条件下鳞笠藤壶无节幼虫存活率 |
Fig. 4 The percentages of T. squamosa squamosa larvae surviving at various developmental stages in different salinities图4 不同盐度条件下鳞笠藤壶各期无节幼虫百分比 |
The authors have declared that no competing interests exist.
[1] |
|
[2] |
|
[3] |
|
[4] |
|
[5] |
|
[6] |
|
[7] |
|
[8] |
|
[9] |
|
[10] |
|
[11] |
|
[12] |
|
[13] |
|
[14] |
|
[15] |
|
[16] |
|
[17] |
|
[18] |
|
[19] |
|
[20] |
|
[21] |
|
[22] |
|
[23] |
|
[24] |
中国科学院中国动物志编辑委员会, 2007. 中国动物志, 无脊椎动物, 第42卷, 甲壳动物亚门, 蔓足下纲, 围胸总目[M]. 北京: 科学出版社: 63.
Editiorial Committee of Fauna Sinica,
|
[25] |
|
[26] |
|
[27] |
|
[28] |
|
[29] |
|
[30] |
|
[31] |
|
[32] |
|
[33] |
|
[34] |
|
[35] |
|
[36] |
|
[37] |
|
[38] |
|
[39] |
|
[40] |
|
[41] |
|
[42] |
|
[43] |
|
/
〈 |
|
〉 |