Inbreeding avoidance through cryptic female choice in the cannibalistic orb-web spider Argiope lobata
Inbreeding avoidance through cryptic female choice in the cannibalistic orb-web spider Argiope lobata
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同类相食的圆网蜘蛛 Argiope lobata 通过神秘的雌性选择来避免近交
DOI：
10.1093/beheco/arp097
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发表时间：
2009
影响因子：
2.4
通讯作者：
J. Schneider
中科院分区：
文献类型：
--
作者：
Klaas W. Welke;J. Schneider
在没有直接利益的情况下，一妻多夫制的适应价值往往被认为在于通过加性遗传效应产生更有活力或更有吸引力的后代。替代模型通过选择性匹配相容基因组提出非加性效应。如果遗传不相容性，例如，通过杂交，近亲繁殖，或自私的遗传因素，降低了后代的生存能力，选择应该有利于前或交配后避免近亲繁殖的机制。交配后避免近亲繁殖可能是通过一妻多夫结合隐性雌性选择实现的。由于雌性蜘蛛有成对的、独立的精子储存器官，一次只能填充一个，它们被认为是研究神秘的雌性选择的理想生物。在这里，我们使用地中海物种的圆网金蛛来调查女性是否会以不同的方式对待兄弟姐妹或非兄弟姐妹的射精。在双交配试验中使用兄弟姐妹和nonsibling男性在所有可能的组合，我们实验操作的男性交配到精子储存器官，随后计数精子在这些存储器官。这个实验设计使我们能够明确地将射精分配给单个男性。我们发现，没有差异存储的精子从第一个男性，但存储的精子量显着减少，从第二个男性，如果他是一个兄弟姐妹。我们的研究结果表明，女性神秘地选择精子，通过存储不同的数量，以贸易更兼容的男性。版权所有2009年，牛津大学出版社。
The adaptive value of polyandry in the absence of direct benefits is often assumed to lie in the production of more viable or more attractive offspring, mediated by additive genetic effects. Alternative models propose nonadditive effects through the selective matching of compatible genomes. If genetic incompatibility, for example, through hybridization, inbreeding, or selfish genetic elements, reduces viability of offspring, selection should favor pre- or postcopulatory mechanisms of inbreeding avoidance. Postcopulatory inbreeding avoidance might be achieved by polyandry in combination with cryptic female choice. Because female spiders have paired and independent sperm storage organs that are only filled one at a time, they have been suggested to be ideal organisms to investigate cryptic female choice. Here we used orb-web spiders of the Mediterranean species Argiope lobata to investigate whether females treat ejaculates from siblings or nonsiblings differently. In double-mating trials using sibling and nonsibling males in all possible combinations, we experimentally manipulated which male mated into which sperm storage organ and subsequently counted spermatozoa in these storage organs. This experimental design allowed us to unambiguously assign ejaculates to individual males. We found no differential storage of sperm from first males but a significantly reduced amount of stored sperm from the second male if he was a sibling. Our results suggest that females cryptically chose sperm to trade up to more compatible males through storing different quantities. Copyright 2009, Oxford University Press.
昆虫交配系统的进化
DOI：
10.1093/acprof:oso/9780199678020.003.0004
发表时间：
2014
期刊：
--
影响因子：
--
作者：
Ritchie M
通讯作者：
Ritchie M
协助自私基因自杀。
DOI：
10.1093/jhered/90.1.191
发表时间：
1999
期刊：
The Journal of heredity
影响因子：
--
作者：
Thomson,MS;Beeman,RW
通讯作者：
Beeman,RW