Protective Geometry and Reproductive Anatomy as Candidate Determinants of Clutch Size Variation in Pentatomid Bugs

文献类型： 外文期刊

第一作者： Abram, Paul K.

作者： Abram, Paul K.;Capko, Clarissa;Abram, Paul K.;Capko, Clarissa;Guerra-Grenier, Eric;Capko, Clarissa;Aquino, Michely Ferreira Santos;Beers, Elizabeth H.;Blassioli-Moraes, Maria Carolina;Borges, Miguel;Laumann, Raul Alberto;Cingolani, M. Fernanda;Cusumano, Antonino;De Clercq, Patrick;Fernandez, Celina A.;Gariepy, Tara D.;Haye, Tim;Haye, Tim;Hoelmer, Kim;Mcpherson, J. E.;Saunders, Thomas E.;Hardy, Ian C. W.

作者机构：

关键词： egg masses; circle packing; ovariole number; Pentatomidae; reproductive strategies; selfish herd

期刊名称：AMERICAN NATURALIST （ 影响因子：2.9； 五年影响因子：3.5 ）

ISSN： 0003-0147

年卷期： 2023 年

页码：

收录情况： SCI

摘要： Many animals lay their eggs in clusters. Eggs on the periphery of clusters can be at higher risk of mortality. We asked whether the most commonly occurring clutch sizes in pentatomid bugs could result from geometrical arrangements that maximize the proportion of eggs in the cluster's interior. Although the most common clutch sizes do not correspond with geometric optimality, stink bugs do tend to lay clusters of eggs in shapes that protect increasing proportions of their offspring as clutch sizes increase. We also considered whether ovariole number, an aspect of reproductive anatomy that may be a fixed trait across many pentatomids, could explain observed distributions of clutch sizes. The most common clutch sizes across many species correspond with multiples of ovariole number. However, there are species with the same number of ovarioles that lay clutches of widely varying size, among which multiples of ovariole number are not overrepresented. In pentatomid bugs, reproductive anatomy appears to be more important than egg mass geometry in determining clutch size uniformity. In addition, our analysis demonstrates that groups of animals with little variation in ovariole number may nonetheless lay a broad range of clutch shapes and sizes.

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