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维持 双斑蝽螈的实验室培养物,这是一种用于昆虫农业和无脊椎动物生理学的多功能正翅目动物模型
维持 双斑蝽螈的实验室培养物,这是一种用于昆虫农业和无脊椎动物生理学的多功能正翅目动物模型
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JoVE Journal Biology
Maintaining Laboratory Cultures of Gryllus bimaculatus, a Versatile Orthopteran Model for Insect Agriculture and Invertebrate Physiology

维持 双斑蝽螈的实验室培养物,这是一种用于昆虫农业和无脊椎动物生理学的多功能正翅目动物模型

Full Text
3,809 Views
08:30 min
June 8, 2022

DOI: 10.3791/63277-v

Martin K. Ventura1, Valerie J. Stull2, Susan M. Paskewitz1

1Department of Entomology,University of Wisconsin-Madison, 2Global Health Institute,University of Wisconsin-Madison

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Please note that some of the translations on this page are AI generated. Click here for the English version.

Overview

This paper describes standardized methods for the long-term rearing of Gryllus bimaculatus, an important model organism and food source. The approaches outlined are derived from practices common in the North American cricket farming industry.

Key Study Components

Research Area

  • Laboratory rearing techniques
  • Edible cricket farming
  • Alternative model organisms

Background

  • Gryllus bimaculatus is increasingly used for both human and animal nutrition.
  • Standardized rearing practices ensure consistency in laboratory studies.
  • Techniques mimic real-world farming conditions.

Methods Used

  • Detailed methods for preparing substrates and managing environmental conditions
  • Gryllus bimaculatus as the primary organism
  • Laboratory-scale cricket farming operations

Main Results

  • Establishment of a reliable rearing system
  • Successful incubation and hatching of eggs
  • Monitoring and maintaining health indicators

Conclusions

  • This study demonstrates effective techniques for rearing crickets in a laboratory setting.
  • The findings are significant for advancing research in alternative protein sources and model organism studies.

Frequently Asked Questions

What is Gryllus bimaculatus used for?
Gryllus bimaculatus is used as a food source for both humans and animals, and it serves as an alternative model organism in research.
Why is standardization important in laboratory rearing?
Standardization helps ensure consistent results and facilitates replication of experiments across different studies.
What methods are used to maintain hydration in the substrate?
A five-to-one ratio of water to dry coconut coir is used to maintain optimal hydration conditions for rearing.
How does this research impact cricket farming?
The techniques can help improve cricket farming operations by providing a laboratory benchmark for best practices in rearing.
What conditions are required for incubation of crickets?
Crickets require an incubator set to 27 degrees Celsius and humidity levels around 60%, with a 12-hour light/dark photoperiod.
How often should feed be replaced during rearing?
Feed should be replaced every two days to prevent mold growth and ensure optimal nutrition.
What indicators are monitored for the health of the crickets?
Key indicators include growth rates, feeding behavior, and health of the environment, including mold presence on feed.

本文概述了标准化重要因素的基本方法,例如密度,饲料可用性,水合作用来源和环境控制,用于长期饲养可食用蟋蟀 Grylus bimaculatus的实验室培养物。

这些技术描绘了饲养Grylus bimaculatus的实用和经过验证的方法,Gryllus bimaculatus是一种用于动物饲料和人类食物的关键迷你牲畜物种,也是越来越重要的替代模式生物。这些用于培养Grylus bimaculatus的实验室方法源自整个北美蟋蟀养殖业中常见的技术,代表了蟋蟀养殖作业的实验室规模的传真。首先,将一个干净的容器放在天平上,并称量一团大约相当于人类拳头大小的干椰子椰壳。

然后,将椰壳纤维放入可密封的清洁容器中,该容器可容纳高达原始体积六倍的膨胀。用干净的手,轻轻地从从较大块中取出的那块上轻轻地分解一团的椰壳纤维。接下来,使用250毫升量程圆柱体,测量正确体积的去离子水,以达到五份水与一份干椰壳纤维质量的五比一比例,并缓慢加入被测得的去离子水,均匀地使所有椰壳纤维颗粒水。

之后,手动浸渍团块以确保均匀的水合作用,并重新去皮先前称重椰壳的容器。称出75克湿润的椰壳纤维,并使用干净的塑料勺将其转移到100毫米×15毫米的培养皿中,以确保椰壳均匀地分布在培养皿的底部并且没有团块。然后,用实验室胶带标记培养皿的侧面,并标明出生菌落和卵子收集事件的日期。

将另外45毫升去离子水测量到量筒中,并在培养皿中包装的椰壳膜表面上均匀地加水,以确保均匀的水合作用。培养皿包装完成后,将剩余的湿椰壳纤维密封在气密容器中,以便在零下20摄氏度储存。将水合产卵基质放入包含所需蟋蟀亲本的笼子中,尽可能远离饲料,并记录日期和时间。

然后,在工作台面上放置一个可高温高压灭菌的小垃圾容器。接下来,在垃圾箱旁边的长凳上放置一个干净的,空的,29.3升的塑料笼。将另一个装有母蟋蟀和产卵基质的29.3升笼子放在空笼子的垃圾容器的另一侧。

24小时后,从母蟋蟀笼中取出产卵基质,并将其定位在可高压灭菌的废物容器上。检查产卵基材的顶部是否有蟋蟀可能踢到椰壳表面的任何碎屑或饲料颗粒。接下来,用干净的Scoopula或塑料勺将椰壳纤维污染物去除到废物容器中,并将塑料勺放入废物容器中。

然后,将清洁的产卵基材放在干净的29.3升笼子中。之后,将笼子放在12小时黑暗,12小时光照光周期的培养箱中,在60%相对湿度下设置为27摄氏度。将装有种畜的笼子放回原始位置,并从工作台面上清除所有物品。

然后,将废物容器放入设施内的冰箱中,专用于储存可能被蟋蟀蛋污染的物品。接下来,用10%漂白剂溶液消毒工作台面,并静置60秒。用干净的纸巾擦干工作表面。

打开冰箱后,将纸巾丢弃在废物容器中。选择两个未使用的 30.8 厘米 x 30.8 厘米商用鸡蛋纸盒。用美工刀或强力剪刀将它们切成六条尺寸相等的10.1厘米宽的独立条带。

然后,用手刷掉切边,去除纸板上悬垂的颗粒。接下来,将六个单独的10.1厘米×30.8厘米纸箱垂直放入笼子的底部,纸箱的较长轴跨越29.3升笼子的较窄水平轴。将第七块纸箱平放在六个直立件的顶部。

选择三条原石后,将大约25厘米×25厘米的牛皮纸巾折成两半。然后,放置两个,使它们覆盖纸箱结构的近端的顶部,并将一个放在远端侧的纸箱堆叠上。产卵后第11天,将产卵底物移入笼子的近端右上角。

当观察到舱口时,将放置在纸箱顶部的纸巾弄雾,直到它们被润湿,但不会主动脱落水。然后,用70%乙醇彻底擦拭100毫米培养皿盖的两侧,并使其干燥。接下来,将 50 克进料舀入 60 瓦的单份搅拌机中,以 10,000 rpm 的速度研磨一分钟。

测量一克饲料后,将其摇到笼子里的培养皿盖上。使用勺子或勺子的干净端,将食物尽可能均匀地摊开在盘子的底部。之后,每两天更换一次饲料。

将旧饲料丢弃在可高温高压灭菌的废物容器中。监测饲料上的霉菌生长。如果饲料开始变白或变绿,丢弃培养皿并立即喂食。

产卵后14天,使用2.54厘米的画笔将所有蟋蟀从椰壳表面和培养皿侧面刷入笼中,以去除附着在出生椰壳纤维基质上的蟋蟀。接下来,将除去的产卵基质放入可高温高压灭菌的废物容器中,并将其储存在冰箱中直至高压灭菌。然后,用新鲜的椰壳纤维皿替换出生基质以进行补水。

使用去离子水洗瓶,加水直至椰壳膜表面闪闪发光,但不结块。蟋蟀来自平均质量为21毫克的种群。在实验结束时,所有成年蟋蟀和成年蟋蟀的平均质量为0.724克。

在65天大时,当实验结束时,有30名成年男性在场,平均质量为0.721克,而对于58名成年女性,平均质量为0.841克。放养和收获之间的存活率为89%,每周通过所有笼子中所有蟋蟀的总数来衡量。在第65天,大约68%的蟋蟀已经达到成年幼年。

浇水或雾化时,避免在外壳底部形成水滴。将纸巾放在避难所上可以产生湿度梯度,并吸收雾化产生的水滴。该程序可作为许多生命科学领域的研究人员将Grylus bimaculatus作为模式生物饲养的模板。

迄今为止,几乎没有关于饲养双斑鳃鳗或任何其他保尿代谢样生物的正式方案发表。编纂和标准化昆虫农业中使用的昆虫饲养方法将更好地比较研究小组之间的结果。

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