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首页> 外文期刊>Latin american journal of aquatic research >Experimental cultures of giant lion's paw Nodipecten subnodosus in equatorial waters of the eastern Pacific: progress in larval development and suspended culture
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Experimental cultures of giant lion's paw Nodipecten subnodosus in equatorial waters of the eastern Pacific: progress in larval development and suspended culture

机译：东太平洋赤道水域大狮子爪亚诺贝氏菌的实验养殖：幼体发育和悬浮培养的进展

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ABSTRACT The bivalve Nodipecten subnodosus is one of the largest scallop species and has been selected as an appropriate species for mariculture, adapting the culture technology for production in equatorial waters of the eastern Pacific Ocean. A study of its larval development was performed, comparing standard technology with different treatments in terms of larval density (two and four larvae mL-1), temperature (24, 27, and 29°C), photoperiod limitation (darkness) and antibiotic treatment (Florfenicol 1.2 mg L-1). The juveniles obtained (11 mm) were transplanted to suspended culture in Ayangue Bay, Santa Elena Province, Ecuador. Results show suboptimal larval cultures, probably due to water quality. The only treatment that produced competent larvae for metamorphosis (50% larvae with eyespot) was the darkness treatment after 18 days when the larvae reached 193.4 ± 15.69 μm in length with 33±1.48% survival. However, growth rate (6.2 μm d-1) was also lower than that reported for the N. subnodosus. Juveniles in intermediate culture showed the highest growth rates so far reported for the species (9.3 mm month-1) and reached 64 mm in eight months. The rapid growth in suspended culture conditions with the estimation of 55% survival, suggest N. subnodosus as an emerging species for the diversification of aquaculture in Ecuador.
机译：摘要双壳类Nodipecten subnodosus是最大的扇贝物种之一，已被选为适合海水养殖的物种，使养殖技术适应了东太平洋赤道水域的生产要求。对其幼虫的发育进行了研究，将标准技术与不同处理方法的幼虫密度（两个和四个幼虫mL-1），温度（24、27和29°C），光周期限制（黑暗）和抗生素处理进行了比较（氟苯尼考1.2 mg L-1）。将获得的幼体（11毫米）移植到厄瓜多尔圣埃琳娜省阿扬格湾的悬浮培养物中。结果显示，可能是由于水质所致，幼体培养欠佳。唯一能使幼虫变态的幼虫（> 50％带有眼斑的幼虫）是18天后的暗处理，当幼虫的长度达到193.4±15.69μm，存活率为33±1.48％时。但是，其生长速率（6.2μmd-1）也低于所报道的亚隐孢子虫。迄今为止，中间培养的幼鱼显示出该物种迄今为止最高的生长速率（9.3 mm month-1），并在八个月内达到了64 mm。悬浮培养条件下的快速生长估计存活率超过55％，这表明亚诺斯猪笼草是厄瓜多尔水产养殖多样化的新兴物种。

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