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首页> 外文期刊>Bulletin de la Societe Zoologique de France >RELATIONS ENTRE LA NEOTENIE DES AMPHIBIENS URODELES ET LES HETEROCHRONIES VOLUMETRIQUES MULTIDIMENSIONNELLES DES ETAGES ENCEPHALIQUES OU DES STRUCTURES INTRATELENCEPHALIQUES
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RELATIONS ENTRE LA NEOTENIE DES AMPHIBIENS URODELES ET LES HETEROCHRONIES VOLUMETRIQUES MULTIDIMENSIONNELLES DES ETAGES ENCEPHALIQUES OU DES STRUCTURES INTRATELENCEPHALIQUES

机译：尿失禁两栖动物的神经元与脑电层或脑内结构的多维体积异质性的关系

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We have coined the term neurotaxonomy to denote the mathematical interface between neuroanatomy and taxonomy. In a previous study, multidimensional analysis of the volumetric indices of structures of the telencephalon in over 40 Urodela (sub)species provided a taxonomy (THIREAU & DORE, 1998, 1999b, 2000 ; THIREAU et al., 1997a). In the present study, we have investigated the relationships between neurotaxonomy and neoteny by performing a series of multidimensional analyses which have shown that: a. whereas an analysis of the volumetric indices of the five main brain parts (telen-, dien-, mesen-, meten-, myelencephalon) does not provide a taxonomy of species, it does distinguish obligate neotenes (Necturus maculosus and Amphiuma tridactylum) from other species. The difference lies mainly in a larger size of the myelencephalon; b. while the bulbus olfactorius accessorius (BOA) is either developed (Axolotl), reduced (Amphiuma tridactylum) or absent (Proteidae), a finer analysis of the volumetric indices of the structures that make up the telencephalon provides evidence of a mosaic of volumetric heterochronies, showing the complex impact of neoteny in these species. The considered question of a relationships between brain and neoteny was considered by ROTH et al, 1993, and EISTHEN et al., 1994, but without any quantitative multidimensional analysis. The importance of these views is now generally recognized in Evolutionary-developmental works, of most importance in the neurobiology field (EAGLESON, 1996; FERNANDEZ et al, 1998...). Neoteny can therefore be seen as a driving force in brain evolution, entailing an important volumetric reorganization of the telencephalon (particularly at the bulbus olfactorius level) of Urodela. From a general point of view, the notion of see-saws between contiguous areas seems to be a frequent strategy in response to various constraints (genetics, epigenetics, endocranial...) which the brain is subject to during the topographic positioning of its volumetric organization. In conclusion, Man himself (DEVAUD, 2000), with his brain organization, should take a parsimonious benefit from one of the major phylogenetic process within vertebrates: i.e. the future in olfactive brain space.
机译：我们创造了术语“神经分类学”来表示神经解剖学和分类学之间的数学接口。在先前的研究中，对40多个Urodela（亚）物种的端脑结构体积指数进行了多维分析，提供了一个分类法（THIREAU＆DORE，1998，1999b，2000； THIREAU等，1997a）。在本研究中，我们通过进行一系列的多维分析研究了神经分类学与新生儿神经衰弱之间的关系。而对五个主要脑部（telen，dien，mesen，meten，myelencephalon）的体积指数的分析并不能提供物种的分类，但确实可以将专性新腱（Necturus maculosus和Amphiuma tridactylum）区分开来。种类。区别主要在于较大的髓脑大小。 b。嗅球（BOA）已发育（Axolotl），已还原（Amphiuma tridactylum）或已缺失（Proteidae），但对构成端脑的结构的体积指数的更精细分析提供了体积异时性镶嵌的证据，显示了新物种在这些物种中的复杂影响。 ROTH等，1993和EISTHEN等，1994考虑了大脑与新生儿的关系这一被认为的问题，但没有进行任何定量的多维分析。这些观点的重要性现已在进化-发展工作中得到普遍认可，在神经生物学领域最为重要（EAGLESON，1996； FERNANDEZ等，1998 ...）。因此，新天体被视为大脑进化的一种“驱动力”，这导致乌罗德勒的远脑（尤其是嗅球水平）的重要体积重组。从一般的角度来看，连续区域之间的跷跷板概念似乎是响应各种约束（遗传学，表观遗传学，颅内...等）的常用策略。组织。总之，Man自己（DEVAUD，2000年）及其大脑组织应该从脊椎动物的主要系统发育过程之一（即嗅觉大脑空间中的“未来”）中受益匪浅。

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