Conservative whole-organ scaling contrasts with highly labile suborgan scaling differences among compound eyes of closely related Formica ants.
Conservative whole-organ scaling contrasts with highly labile suborgan scaling differences among compound eyes of closely related Formica ants.
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DOI：
10.1002/ece3.2695
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发表时间：
2017-03
影响因子：
2.6
通讯作者：
Niven JE
中科院分区：
文献类型：
--
作者：
Perl CD;Rossoni S;Niven JE
静态异速生长决定了器官大小与体重的关系。这些异速生长关系在多大程度上可以自由进化，以及它们在密切相关的物种之间如何不同，一直存在广泛的争论，目前仍不清楚;截距的变化似乎很常见，但斜率的变化要少得多。在这里，我们比较的缩放关系，支配的复眼结构的四个密切相关的蚂蚁属蚁种。这些物种之间的比较显示，截距的变化，但不是斜率的异速生长缩放关系的眼睛面积，小面数，和平均小面直径。此外，小面直径和数量之间的缩放在所有四个物种中是保守的。与此相反，从复眼的不同区域的小面直径不同的截距和斜率在一个单一的物种，当比较物种之间的同源区域。因此，即使物种在整个器官的尺度上是保守的，它们在器官内的区域尺度上也会有很大的不同。这至少部分地解释了物种如何能够产生符合属范围尺度关系的器官，同时仍然能够在器官的特定区域进行差异化投资，以产生与其生态学相匹配的特定特征。
Static allometries determine how organ size scales in relation to body mass. The extent to which these allometric relationships are free to evolve, and how they differ among closely related species, has been debated extensively and remains unclear; changes in intercept appear common, but changes in slope are far rarer. Here, we compare the scaling relationships that govern the structure of compound eyes of four closely related ant species from the genus Formica. Comparison among these species revealed changes in intercept but not slope in the allometric scaling relationships governing eye area, facet number, and mean facet diameter. Moreover, the scaling between facet diameter and number was conserved across all four species. In contrast, facet diameters from distinct regions of the compound eye differed in both intercept and slope within a single species and when comparing homologous regions among species. Thus, even when species are conservative in the scaling of whole organs, they can differ substantially in regional scaling within organs. This, at least partly, explains how species can produce organs that adhere to genus wide scaling relationships while still being able to invest differentially in particular regions of organs to produce specific features that match their ecology.