Does traumatic secretion transfer manipulate mating roles or reproductive output in a hermaphroditic sea slug?
Does traumatic secretion transfer manipulate mating roles or reproductive output in a hermaphroditic sea slug?
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创伤性分泌物转移是否会影响雌雄同体海蛞蝓的交配角色或生殖输出？
DOI：
10.1007/s00265-013-1551-4
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发表时间：
2013
影响因子：
2.3
通讯作者：
Anthes
中科院分区：
文献类型：
--
作者：
Werminghausen;Anthes
同时雌雄同体的Siphopteronsp 的交配。涉及在授精前用管心针形状的阴茎附属物将前列腺液注射到交配伴侣体内。据推测，这种创伤性分泌物转移会操纵性别角色或接受者的短期生殖输出。为了测试创伤性分泌物转移的操纵效果，我们切除了男性行为个体的管心针，然后将它们与未经治疗的焦点个体配对。然后，在“无注射组”和具有假处理交配伙伴的“对照组”之间，比较焦点个体的交配行为和产卵量。我们发现，在授精前和授精期间将阴茎管心插入不同部位，但前列腺液注射仅限于第一阶段。在这里，注射是进入前足区域，表明前列腺分泌物针对附近的男性或女性交配道。我们对创伤性分泌物转移的实验操作并不影响所表现出的交配作用。两种治疗中的交配通常是相互的，因此双方都扮演雄性和雌性交配角色。此外，精子接受者的生殖输出在治疗之间没有差异。我们得出的结论是，该物种的创伤性分泌物转移要么影响目前未测量的特征，例如捐赠者的亲子份额，要么这些海蛞蝓非常适合创伤性分泌物转移，以至于这种影响太微妙而无法在我们当前的测定中检测到。
Copulation in the simultaneous hermaphroditeSiphopteronsp. involves injection of prostate fluids into the mating partner with a stylet-shaped penile appendage before insemination. It has been hypothesised that such traumatic secretion transfer manipulates sex roles or the recipient’s short-term reproductive output. To test manipulative effects of traumatic secretion transfer, we ablated the stylet of male-acting individuals and then paired them to untreated focal individuals. Mating behaviour and egg output of focal individuals was then compared between this ‘no injection group’ and a ‘control group’ with sham-treated mating partners. We found that penile stylets were inserted at different areas prior to and during insemination, but prostate fluid injection was restricted to the first phase. Here, injections were into the anterior foot region, indicating that prostate secretions target the nearby male or female copulatory tracts. Our experimental manipulation of traumatic secretion transfer did not affect the exhibited mating roles. Matings in both treatments were usually reciprocal so that both partners acted in the male as well as female mating role. Moreover, sperm recipient reproductive output did not differ between treatments. We conclude that traumatic secretion transfer in this species either affects currently unmeasured traits, for instance the donor’s paternity share, or that these sea slugs are so well-adapted to traumatic secretion transfer that the effects were too subtle to be detected in our current assays.
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影响因子：
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作者：
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DOI：
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发表时间：
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期刊：
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影响因子：
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发表时间：
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