Effects of ethylenediaminetetraacetic acid on growth and survival of long‐spined sea urchin Diadema antillarum larvae

IF 1.4 4区农林科学 Q3 FISHERIES North American Journal of Aquaculture Pub Date : 2023-10-16 DOI:10.1002/naaq.10305

Md Mahbubul Hassan, Aaron R. Pilnick, Joshua T. Patterson

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Abstract

Abstract Objective The presence of heavy metals in seawater is a major challenge for hatchery culture of sea urchin larvae due to their sensitivity to metal pollution. The impact of heavy metals in seawater for sensitive marine larviculture could be minimized via chelation of metals using chemical compounds such as ethylenediaminetetraacetic acid (EDTA). Methods In this study the effects of EDTA were tested for the long‐spined sea urchin Diadema antillarum during larviculture at two concentrations (10 μM and 50 μM) and two exposure durations (6 and 24 days postfertilization). Growth and survival of larvae were evaluated as response variables. Result Significant differences in growth and survival of larvae were found among the treatments at different EDTA concentrations and exposure durations. The 10‐μM EDTA treatment enhanced growth and survival of larvae relative to control for both exposure durations. The 50‐μM EDTA treatment was unsuitable for long‐spined sea urchin larviculture due to reductions in growth and survival. Conclusion The use of 10 μM EDTA during embryo incubation and larviculture is expected to improve long‐spined sea urchin larval fitness, leading to improved hatchery production.

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乙二胺四乙酸对长棘海胆抗棘双足幼虫生长和存活的影响

摘要目的海胆幼虫对重金属污染非常敏感，海水中重金属的存在是海胆孵化养殖面临的主要挑战。通过使用乙二胺四乙酸(EDTA)等化合物螯合金属，可以最大限度地减少海水中重金属对敏感海洋幼体养殖的影响。方法采用2种浓度(10 μM和50 μM)和2种暴露时间(受精后6天和24天)，研究EDTA对长棘海胆的影响。以幼虫的生长和存活为响应变量。结果不同EDTA浓度和暴露时间对幼虫的生长和存活率有显著影响。与对照组相比，在两种暴露时间下，10 μM EDTA处理均能促进幼虫的生长和存活。由于生长和存活率降低，50 μM EDTA处理不适合长棘海胆幼体养殖。结论10 μM EDTA在长棘海胆胚胎孵育和幼体培养过程中可提高长棘海胆幼体的适应性，从而提高孵育产量。

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来源期刊

North American Journal of Aquaculture 农林科学-渔业

CiteScore

2.50

自引率

0.00%

发文量

审稿时长

18-36 weeks

期刊介绍： The North American Journal of Aquaculture publishes papers on new research and practical experience in all areas of intensive and extensive fish culture. Topics include broodstock selection and spawning, nutrition and feeding, health and water quality, facilities and production technology, and the management of ponds, pens, and raceways. The journal will consider papers dealing with ways to improve the husbandry of any aquatic species—marine or freshwater, vertebrate or invertebrate—raised for commercial, scientific, recreational, enhancement, or restoration purposes that may be of interest to practitioners in North America. Its scope includes both basic and applied science, but applied scientific endeavors—including practical experiences, descriptive studies, and other nontraditional, but pertinent works—are emphasized.