Overview of Neotropical-Caribbean freshwater ostracode fauna (Crustacea, Ostracoda): identifying areas of endemism and assessing biogeographical affinities
Overview of Neotropical-Caribbean freshwater ostracode fauna (Crustacea, Ostracoda): identifying areas of endemism and assessing biogeographical affinities
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DOI：
10.1007/s10750-016-2747-1
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发表时间：
2017-02-01
期刊：
影响因子：
2.6
通讯作者：
Schwalb, Antje
中科院分区：
文献类型：
--
作者：
Cohuo, Sergio;Macario-Gonzalez, Laura;Schwalb, Antje
来自新热带-加勒比地区的淡水介形类可能是进化和古环境研究的极好工具，但它们的使用有限，因为大规模物种的分类学、环境和地理偏好的综合数据仍然未知。根据现有文献和田野调查结果，在新热带-加勒比地区共记录到118种。约74%的物种局限于该地区，其中大多数由于环境异质性而显示出有限的分布区。根据对地方性的简约分析，确定了五个特有地区：(1)佛罗里达州南部，(2)墨西哥南部-中美洲北部，(3)古巴，(4)小安的列斯群岛，和(5)委内瑞拉北部-阿鲁巴-库拉索-特立尼达。修订了这些地区的保护状况，并建议将具有特有类群的湖泊生态系统纳入环境保护倡议。生物地理分析表明，新热带-加勒比海地区介形虫动物群与新热带-新生代地区介形虫区系有很强的分化。物种交流很少归因于火山活动和不规则地形等生态和地理障碍。新热带-加勒比海地区的动物群亲缘关系表明，墨西哥南部、佛罗里达南部和安的列斯群岛之间的关系更密切，这表明它们有着共同的生物地理史。中美洲和恰帕斯-危地马拉高地被视为与世隔绝的地区。
Freshwater ostracodes from the Neotropical-Caribbean region are potentially excellent tools for evolutionary and paleoenvironmental studies but their use is limited, because integrated data in taxonomy, environmental, and geographical preferences of the species at large scale remain unknown. A total of 118 species were recorded in the Neotropical-Caribbean region based on existing literature and results from fieldwork. About 74% of the species are restricted to the region and most of them show limited distributional areas as a consequence of environmental heterogeneity. Based on Parsimony Analysis of Endemicity, five areas of endemism were identified: (1) southern Florida, (2) southern Mexico-northern Central America, (3) Cuba, (4) Lesser Antilles, and (5) northern Venezuela-Aruba-Curacao-Trinidad. The conservation status of these areas was revised and lake ecosystems with endemic taxa were proposed to be included in environmental protection initiatives. Biogeographical analysis showed a strong differentiation between the ostracode faunas of the Neotropical-Caribbean region and the Neotropical-Neogen region. Few exchanges of species were attributed to ecological and geographical barriers such as volcanism and irregular orography. Faunal affinities within the Neotropical-Caribbean region indicated closer relationship between southern Mexico, southern Florida and the Antilles suggesting a common biogeographical history. Middle Central America and Chiapas-Guatemala highlands were discriminated as isolated regions.