Darter fishes exhibit variable intraspecific head shape allometry and modularity
Darter fishes exhibit variable intraspecific head shape allometry and modularity
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鲈鱼表现出不同的种内头部形状异速生长和模块化
DOI：
10.1002/ar.25088
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发表时间：
2023
期刊：
影响因子：
--
通讯作者：
Arbour, Jessica H.
中科院分区：
文献类型：
--
作者：
Goodwin, Maris R.;Arbour, Jessica H.
异速生长，解剖比例和身体大小之间的关系，可能会限制或促进形态的多样化。我们研究了异速生长的影响镖鲈鱼形态，显示了各种营养形态。这项研究旨在解决（a）是否有显着的变化，在镖鲈头部异速生长，（B）如果异速生长有助于头部形状的多样性在成人，（c）如果镖鲈显示头部形状模块化与异速生长。我们使用几何形态计量学来量化10个不同物种的头部形状，并测试异速生长斜率的异质性。此外，我们量化了镖鲈头部眶前区和眶后区之间的模块化程度，无论是在身体大小校正之前还是之后。我们发现，不同的物种有独特的异速生长斜率，特别是在theSimopercasubgenus，和密切相关的镖鲈物种往往表现出个体发育的分歧，有助于在成年人中观察到的头部形状的多样性。我们认为，这种模式可能是由于相似的少年饮食，由于张口限制。我们还发现，几个物种显示出显着的头部形状的模块化，但模块化是进化不稳定的，只有有时头部形状异速生长的影响。总体而言，我们的工作表明，个体发育的形状发展可能是重要的镖鲈头部形状的演变，特别是在觅食性状和微生境的演变。
Allometry, the relationship between anatomical proportions and body size, may either limit or facilitate the diversification of morphology. We examined the impact of allometry in darter fish morphology, which displays a variety of trophic morphologies. This study aimed to address (a) whether there was significant variation in darter head allometry, (b) if allometry contributed to head shape diversity in adults, and (c) if darters show head shape modularity associated with allometry. We used geometric morphometrics to quantify head shape across 10 different species and test for heterogeneity in allometric slopes. In addition, we quantified the degree of modularity between the preorbital and postorbital regions of the darter head, both before and after correction for body size. We found that different species have unique allometric slopes, particularly among theSimopercasubgenus, and that closely related darter species tend to show ontogenetic divergence, contributing to the diversity of head shapes observed in adults. We suggest that such a pattern may result from the similarity of juvenile diets due to gape limitation. We also found that several species show significant modularity in head shape but that modularity was evolutionarily labile and only sometimes impacted by head shape allometry. Overall, our work suggests that ontogenetic shape development may have been important to the evolution of head shape in darters, particularly in the evolution of foraging traits and microhabitat.
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影响因子：
3.7
作者：
Claverie T;Wainwright PC
通讯作者：
Wainwright PC
田纳西州的鱼
DOI：
--
发表时间：
1994
期刊：
影响因子：
--
作者：
D. Etnier;W. Starnes
通讯作者：
W. Starnes
影响因子：
1.4
作者：
P. Wainwright;Barton A. Richard
通讯作者：
Barton A. Richard
飞镖手手册
DOI：
10.2307/1444425
发表时间：
1983
期刊：
Proceedings of the Royal Society of London. Series B: Biological Sciences
影响因子：
--
作者：
L. Page
通讯作者：
L. Page
影响因子：
5.4
作者：
Arbour JH;Curtis AA;Santana SE
通讯作者：
Santana SE