Dorsal cortex volume in male side-blotched lizards (Uta stansburiana) is associated with different space use strategies.
Dorsal cortex volume in male side-blotched lizards (Uta stansburiana) is associated with different space use strategies.
复制标题
DOI：
10.1016/j.anbehav.2009.03.020
复制
发表时间：
2009-07-01
期刊：
影响因子：
2.5
通讯作者：
Pravosudov, Vladimir V.
中科院分区：
文献类型：
--
作者：
LaDage, Lara D.;Riggs, Becky J.;Sinervo, Barry;Pravosudov, Vladimir V.
空间能力与许多生态相关的行为有关，如领土，配偶选择，导航和获取食物资源。鸟类和哺乳动物对空间能力的不同要求已经被证明会影响海马体，海马体是大脑中负责空间处理的区域。在一些鸟类和哺乳动物物种中，对空间能力的更高要求与更大的海马体积有关。内侧和背侧皮质是哺乳动物海马的假定爬行动物同源物，但很少有研究探讨这些脑区和爬行动物的差异空间使用策略之间的关系。此外，在鸟类和哺乳动物中的许多研究比较了不同利用空间的物种之间的海马属性，这可能会混淆物种特异性效应与空间利用差异行为的影响。在这里，我们调查了空间使用策略和内侧和背侧皮质体积的男性侧斑蜥蜴（Uta stansburiana）之间的关系。在这个物种中，男性出现在三个不同的变体，每个变体使用不同的空间生态位：大领土持有者，小领土持有者和非领土持有者的家庭范围小于小领土持有者的领土。我们发现，大领土持有人有较大的背侧皮质体积相对于其余的端脑相比，非领土男性，和小领土持有人的中间。这些结果表明，占据大片领土的某些方面可能会对空间能力提出要求，这反映在被认为部分负责空间处理的大脑区域中。
Spatial abilities have been associated with many ecologically-relevant behaviors such as territoriality, mate choice, navigation and acquisition of food resources. Differential demands on spatial abilities in birds and mammals have been shown to affect the hippocampus, the region of the brain responsible for spatial processing. In some bird and mammal species, higher demands on spatial abilities are associated with larger hippocampal volumes. The medial and dorsal cortices are the putative reptilian homologues of the mammalian hippocampus, yet few studies have examined the relationship between these brain areas and differential spatial use strategies in reptiles. Further, many studies in birds and mammals compare hippocampal attributes between species that utilize space differently, potentially confounding species-specific effects with effects due to differential behaviors in spatial use. Here, we investigated the relationship between spatial use strategies and medial and dorsal cortical volumes in males of the side-blotched lizard (Uta stansburiana). In this species, males occur in three different morphs, each morph using different spatial niches: large territory holders, small territory holders and non-territory holders with home ranges smaller than the territories of small territory holders. We found that large territory holders had larger dorsal cortical volumes relative to the remainder of the telencephalon compared with non-territorial males, and small territory holders were intermediate. These results suggest that some aspect of holding a large territory may place demands on spatial abilities, which is reflected in a brain region thought partially responsible for spatial processing.
登录
查看更多内容
影响因子：
1.7
作者：
Day, LB;Crews, D;Wilczynski, W
通讯作者：
Wilczynski, W
影响因子：
1.7
作者：
Ehmer, B;Reeve, HK;Hoy, RR
通讯作者：
Hoy, RR
DOI：
10.1073/pnas.87.16.6349
发表时间：
1990-08-01
影响因子：
11.1
作者：
JACOBS, LF;GAULIN, SJC;HOFFMAN, GE
通讯作者：
HOFFMAN, GE
影响因子：
2.7
作者：
López, JC;Vargas, JP;Salas, C
通讯作者：
Salas, C
影响因子：
2.1
作者：
Comendant, T;Sinervo, B;Wingfield, J
通讯作者：
Wingfield, J