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首页> 外文期刊>North American Journal of Aquaculture >Performance of Two Egg Collector Designs for Use with Mummichogs
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Performance of Two Egg Collector Designs for Use with Mummichogs

机译：用于Mummichogs的两种鸡蛋收集器设计的性能

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The Mummichog Fundulus heteroclitus is a popular marine baitfish in the species' natural range along the east coast of North America from Florida to the Gulf of St. Lawrence. Interest in commercial culture of Mummichogs has grown over the last two decades, but little research has been conducted to examine species-specific culture techniques; thus, Mummichog culture has not advanced. Our objectives were to evaluate the performance of two egg collectors designed to mimic the structures of natural substrates and to maximize labor efficiency. A tray-style collector (TSC) and a disk-style collector (DSC) were both placed in each of six 5,000-L tanks stocked with approximately 700 adult Mummichogs of both sexes. The numbers of eggs collected, fertilized eggs, and viable larvae that hatched as well as the time required to rinse collectors during each biweekly collection were compared between the two designs. Over the 8-week study, there was no significant difference between designs in terms of the number of eggs collected or the total rinse time. However, the percentage of unfertilized eggs collected was twice as high for TSCs (mean +/- SD = 8.53 +/- 0.59%) than for DSCs (4.42 +/- 0.36%). Additionally, larval yield was significantly higher for DSCs (79.10 +/- 12.93%) than for TSCs (72.63 +/- 13.95%). Based on these results, we conclude that both designs are efficient at collecting Mummichog eggs and that the DSC is the more advantageous design for maximizing fertilization rate and larval yield.
机译：Mummichog Fundulus heteroclitus是在该物种自然范围内从佛罗里达州到圣劳伦斯湾的一种自然流行的海鱼。在过去的二十年中，人们对Mummichogs的商业文化产生了浓厚的兴趣，但很少进行研究来研究特定于物种的养殖技术。因此，Mummichog文化尚未发展。我们的目标是评估两个模仿天然基质结构并最大程度提高劳动效率的卵收集器的性能。托盘式收集器（TSC）和圆盘式收集器（DSC）均放置在六个5,000升的水箱中，每个水箱中装有大约700个男女成年Mummichogs。在两种设计之间，比较了每两周一次收集的卵的数量，受精卵和孵化的活幼虫的数量以及冲洗收集器所需的时间。在为期8周的研究中，设计之间在收集的卵数或总冲洗时间方面无显着差异。但是，TSC收集的未受精卵的百分比是TSC的两倍（平均+/- SD = 8.53 +/- 0.59％），比DSC的高了两倍（4.42 +/- 0.36％）。此外，DSC的幼虫产量（79.10 +/- 12.93％）显着高于TSC的幼虫产量（72.63 +/- 13.95％）。根据这些结果，我们得出结论，两种设计都可以有效地收集Mummichog卵，而DSC是使受精率和幼虫产量最大化的更有利的设计。

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