The gin trap as a device facilitating coercive mating in sagebrush crickets
The gin trap as a device facilitating coercive mating in sagebrush crickets
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杜松子陷阱作为促进山艾蟋蟀强制交配的装置
DOI：
10.1098/rspb.1995.0118
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发表时间：
1995
期刊：
影响因子：
--
通讯作者：
L. V. Swanson
中科院分区：
文献类型：
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作者：
S. Sakaluk;Patricia J. Bangert;Anne;C. Gack;L. V. Swanson
雌性山艾树蟋蟀（Cyphoderris strepitans）在交配时以雄性肉质的后翅为食，并从它们造成的伤口中摄取血淋巴。与此同时，雄性会用一种专门的腹部夹器官来保护雌性，这种器官被称为杜松子酒陷阱。虽然杜松子酒陷阱显然具有生殖作用，但其确切的功能意义仍然未知。本研究的目的是确定杜松子酒陷阱的适应意义，通过独立操纵的能力，男性提供和安全的女性在交配。当雄性的后翅保持完整时，功能和实验禁用杜松子酒陷阱的雄性的交配成功率没有差异。然而，当男性的后翅被删除，男性与功能杜松子酒陷阱经历了显着更高的交配成功率比那些杜松子酒陷阱已被禁用。我们的结论是，杜松子酒陷阱功能作为一个设备，男性后翅材料不足，能够迫使女性不愿意接受他们的精囊交配。
Female sagebrush crickets (Cyphoderris strepitans) feed on males’ fleshy hind wings during copulation and ingest haemolymph from the wounds they inflict. At the same time, males physically secure females using a specialized, abdominal pinching organ known as a gin trap. Although the gin trap clearly serves a reproductive role, its precise functional significance remains unknown. The objective of the present study was to determine the adaptive significance of the gin trap by independently manipulating the ability of males to provision and secure females during copulation. When the hind wings of males were left intact, there was no difference in the mating success of males with functional and experimentally disabled gin traps, respectively. However, when males’ hind wings were removed, males with functional gin traps experienced a significantly higher mating success than those whose gin traps had been disabled. We conclude that the gin trap functions as a device by which males with insufficient hind-wing material are able to force copulations upon females unwilling to accept their spermatophores.