■热带地区的水生生态系统通常是鱼类物种丰富度较高的环境。这些系统也是世界上最脆弱的系统之一,威胁热带地区的整体生物多样性。作为第一步,重要的是要列举任何生态系统中的物种,以促进其保护。这项研究旨在调查智利佛得角泻湖中的鱼类动物,QuintanaRoo,在尤卡坦半岛,幸运的是,一个在墨西哥受到良好保护的系统,基于带有mtDNA条形码的动物区系调查。
■我们收集了幼虫,少年,泻湖中的成鱼和成鱼,以及针对不同生命阶段的各种采样装备。使用形态学和DNA条形码鉴定物种。物种和鱼类浮游生物生物量的丰度(湿重,抽吸技术)是从43个样本中计算的。
■我们收集了197只成鱼和幼鱼以及3722只幼虫,其中306份标本进行了DNA测序,成功率为96.7%。我们确定了13个家庭,24属,和我们库存中的27个物种。使用Chao1丰富度估算器,估计物种数量占潜在总丰富度的75%。类群和类鱼占鱼类总丰度的87.9%,and,和鲤科动物一起,也占鱼类浮游生物生物量最高。
■通过形态和分生指数对成鱼和幼鱼进行了鉴定,然而,幼虫需要DNA条形码来识别物种。丛生的高生物量和丰富的幼虫,gobiids和cyprinodontis表明智利佛得角泻湖对于该地区这些物种的繁殖可能很重要。Microgobiusmicrolepis,一种海洋虾虎鱼,首次在内陆寡盐系统中报道。这项研究为墨西哥尤卡坦半岛智利佛得角泻湖的未来环境评估和生物监测提供了基础。
UNASSIGNED: Aquatic ecosystems in the tropics are typically environments with a high species richness of fishes. These systems are also among the most vulnerable in the world, threatening the overall biodiversity of tropical regions. As a first step, it is important to enumerate the species in any ecosystem to promote its conservation. This study aims to inventory the ichthyofauna in the Chile Verde Lagoon, Quintana Roo, on the Yucatan Peninsula, a system fortunately well protected in Mexico, based on faunal surveys backed up with mtDNA barcodes.
UNASSIGNED: We collected larvae, juveniles, and adults of fishes in the lagoon with a variety of sampling gear targeting various life stages. Species were identified using both morphology and DNA barcodes. The abundance of species and ichthyoplankton biomass (wet weight, suction technique) were calculated from 43 samples.
UNASSIGNED: We collected 197 adult and juvenile fishes and 3,722 larvae, of which 306 specimens were DNA-sequenced with a success rate of 96.7%. We identified 13 families, 24 genera, and 27 species in our inventory. The species number was estimated to comprise 75% of the potential total richness using the Chao 1 richness estimator. Clupeids and gobiids accounted for 87.9% of the total abundance of fishes, and, together with cyprinodontids, also accounted for the highest ichthyoplankton biomass.
UNASSIGNED: Adult and juvenile fishes were identified by morphology and meristic values, however larvae required DNA barcoding to identify species. The high biomass and abundance of larvae of clupeids, gobiids and cyprinodontids suggests that the Chile Verde Lagoon may be important for reproduction of these species in the region. Microgobius microlepis, a marine goby species, is reported for the first time in an inland oligohaline system. This study provides a basis for future environmental assessment and biomonitoring of the Chile Verde Lagoon in the Yucatan Peninsula of Mexico.