Inhibition of Microorganisms on a Carrion Breeding Resource: The Antimicrobial Peptide Activity of Burying Beetle (Coleoptera: Silphidae) Oral and Anal Secretions
Inhibition of Microorganisms on a Carrion Breeding Resource: The Antimicrobial Peptide Activity of Burying Beetle (Coleoptera: Silphidae) Oral and Anal Secretions
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DOI：
10.1603/en10137
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发表时间：
2011-06-01
影响因子：
1.7
通讯作者：
Smith, Rosemary J.
中科院分区：
文献类型：
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作者：
Hall, Carrie L.;Wadsworth, Nicholas K.;Smith, Rosemary J.
食腐动物和微生物之间争夺腐肉中的营养物质是有据可查的。作为食物网能量的重要贡献者，腐肉不仅是食腐动物的食物来源，也是许多昆虫的生殖资源。其中一个例子是隐翅虫属（鞘翅目：隐翅虫科）的埋葬甲虫，它们的繁殖依赖于定位和成功地隔离脊椎动物的腐肉。在整个合作准备腐肉和喂养幼虫后代的过程中，亲代甲虫在腐肉上涂上口腔和肛门分泌物，在实验室中已知这种分泌物可以减少霉菌和细菌的生长。我们验证了以下假设，即微虫的分泌物会减弱自然存在的微生物的生长，这些微生物可能在腐肉资源中定植，并且分泌物中的活性抗菌成分是与其他昆虫产生的类似的小抗菌肽（amp）。
Competition between scavengers and microorganisms for the nutrients within carrion is well documented. As a significant contributor to food web energetics, carrion serves not only as a food source for scavengers, but also as a reproductive resource for many insects. One example are the burying beetles of the Nicrophorus genus (Coleoptera: Silphidae) whose reproduction is dependent on locating and successfully sequestering vertebrate carrion. Throughout the cooperative preparation of carrion and feeding of the larval offspring, parental beetles coat the carrion with oral and anal secretions known to attenuate the growth of molds and bacteria in the laboratory. We test the hypotheses that Nicrophorus secretions attenuate the growth of naturally occurring microorganisms likely to be found colonizing the carrion resource, and that the active antimicrobial components of the secretions are small antimicrobial peptides (AMPs) similar to those produced by other insects.