墨西哥湾软体动物群：北美内陆海的特有性

English | 2025 | ISBN: 9781032883588 | 238 pages | True PDF EPUB | 139.81 MB

Recent biodiversity studies, reported here for the first time, have shown that the molluscan fauna of the Gulf of Mexico is far richer and more complex than previously thought. As a result of these new discoveries, the Gulf malacofauna is shown to contain large numbers of endemic species that reside within four separate biogeographical subdivisions of the larger Carolinian Molluscan Province: the Floridian, Suwannean, Texan, and Yucatanean Subprovinces. These four Gulf biotic components, with each supporting its own endemic fauna, are shown here to be separated by distinct ecological and oceanographic barriers. The resultant physical and genetic isolation has led to the evolution of spectacular sibling species radiations, many unknown and undescribed until now. Some of the most conspicuous and important of these are found in the gastropod families Fasciolariidae, Volutidae, Conidae, Muricidae, and Busyconidae, all of which are dominant predators in their respective benthonic ecosystems. The species within these ecologically-important families, along with hundreds of endemic taxa in 50 other gastropod and bivalve families, are illustrated here on 132 color plates and are discussed in detail in the individual chapters. Special attention is given to the mollusks of poorly studied and virtually unknown ecosystems such as those on the deep reefs off the Florida Keys and Dry Tortugas, the deep water coralline algal beds off western Florida, the Flower Garden Reefs off Texas, the petroleum seeps and brine pools of the Sigsbee Escarpment, the Campeche Bank Archipelago, and the deep water areas at the mouth of the Yucatan Channel. This new book is unlike previous taxonomic surveys of the Gulf of Mexico mollusks in that it highlights only the endemic species and genera and does not cover the large number of widespread Carolinian and Caribbean taxa that occur with them. In this aspect, the book is designed to be an augmentation to previous faunal surveys, adding hundreds more taxa that had been missed in these older surveys or were described after those earlier works had been published. The emphasis on endemic species and species complexes is meant to underscore the special nature of the Gulf of Mexico malacofauna, setting it aside from all others in the Tropical Western Atlantic Region.

最近的生物多样性研究首次报告了墨西哥湾 molluscan 动物群比先前认为要丰富得多且复杂。由于这些新的发现，墨西哥湾软体动物群落显示包含大量特有物种，这些特有种居住在较大的卡罗林 molluscan 地区中的四个单独的地生物地理分区中：佛罗里达、苏凡纳、德克萨斯和尤卡aya纳子地分区。这四种墨西哥湾生物组成的成分各自支持自己的特有种群，并且在这里显示出通过明显的生态和海洋学屏障进行分隔。这种物理和遗传的隔离导致了壮观的近缘物种辐射，许多以前未知和未描述的现象目前也已揭示。这些最显眼和重要的例子包括在腹足纲 Fasciolariidae、Volutidae、Conidae、Muricidae 和 Busyconidae 家族中发现的种类。所有这些都是它们各自底栖生态系统中的主要掠食者。这些在生态上重要家庭中的物种，以及 50 多个其他软体动物和瓣鳃纲家族中的数百个特有种，在 132 张彩色插页图中进行详细说明，并在单独章节中讨论。特别注意了对研究较少且几乎完全未知生态系统的研究，如佛罗里达群岛和多米尼加海的深海礁、西佛罗里达附近的珊瑚藻床、德克萨斯附近的福乐花园礁、西弗州 Sigbee 斜坡石油渗出处和盐水池、Campeche 半岛和尤卡gyana 海峡入口附近的深海水域。这本书不像以前对墨西哥湾 molluscan 的分类调查那样强调广泛的卡罗林尼亚和加勒比物种，而仅仅关注特有种系和属，并且不涵盖它们与这些物种共存的大量物种。在这一点上，该书旨在补充之前的动物群调查，增加了先前调查中遗漏或在这些早期作品出版之后才描述了更多种。强调特有种和物种复合体的焦点旨在突出墨西哥湾 molluscan 动物群的独特性质，将它与其他热带西大西洋地区的动物群区分开来。

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