Biological traits analysis of free-living nematodes as indicators of environmental quality at Lake Bacalar, Mexico

Jesús‐Navarrete, Alberto de; Álvarez-Legorreta, T.

doi:10.1007/s10201-021-00693-9

Cited by 5 publications

(4 citation statements)

References 49 publications

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“…Water temperature in February averaged 24.05 ± 0.75 °C and in March 24.87 ± 1.80, with the subsequent months about 4 °C warmer, and consistent ( = 28.90 ± 0.55 °C). This change of temperature is less noticeable in deeper systems, such as the nearby Lake Bacalar with a mean depth of 13.3 m (data taken from De Jesús-Navarrete & Legorreta, 2022 ) and an annual variation of approximately 2 °C ( Tobón Velázquez et al 2019 ).…”

Section: Resultsmentioning

confidence: 99%

Discovering the fish fauna of a lagoon from the southeast of the Yucatan Peninsula, Mexico, using DNA barcodes

Uh-Navarrete,

Valdez-Moreno,

Callejas-Jiménez

et al. 2023

PeerJ

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Background 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. Methods 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. Results 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. Conclusion 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.

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Section: Resultsmentioning

confidence: 99%

Discovering the fish fauna of a lagoon from the southeast of the Yucatan Peninsula, Mexico, using DNA barcodes

Uh-Navarrete,

Valdez-Moreno,

Callejas-Jiménez

et al. 2023

PeerJ

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“…and the mortality of 94,339 specimens of the native freshwater snail Pomacea flagellate in August 2020 was reported and attributed to the prevailing poor water quality conditions [72]. Significant alterations in the physicochemical parameters of water quality have been reported at various sites around BL following the passage of Tropical Storm Cristobal, from oligotrophic [38,73,74] to eutrophic conditions [74]. Other intense hydrometeorological events impacted the surrounding lands of BL, such as hurricane Dean (category 5) on 21 August 2007, which produced very intense winds up to 278 km/h and accumulated precipitation of 81 mm [45,75].…”

Section: Natural Disturbancesmentioning

confidence: 99%

“…The concentrations of phosphates are below the detection limits of 0.01 and 0.1 mg/L. However, the orthophosphate values have been reported as 0.003 mg/L ± 0.002 [38]. The pH values ranged from a minimum of 6.6 [39] to a maximum of 8.3 [40].…”

Section: Introductionmentioning

confidence: 99%

Investigating the Morphometry and Hydrometeorological Variability of a Fragile Tropical Karstic Lake of the Yucatán Peninsula: Bacalar Lagoon

Carrillo,

Yescas,

Nieto-Oropeza

et al. 2024

Hydrology

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Comprehensive morphometric and hydrometeorological studies on Bacalar Lagoon, Mexico’s largest tropical karstic lake and a significant aquatic system of the Yucatán Peninsula, are lacking. This study provides a detailed analysis of its bathymetry, morphometry, and hydrometeorological characteristics. The lake’s main basin stretches more than 52.7 km in length, with widths varying from 0.18 km to 2.28 km. It has a volume of 554.4 million cubic meters, with an average depth of 8.85 m, reaching depths of up to 26 m in the north and featuring sub-lacustrine dolines in the south, with depths of 38 m, 48.5 m, and 63.6 m. The study reveals seasonal variations in surface water temperature, closely linked to air temperature (r = 0.89), and immediate responses of water levels to hydrometeorological events. Water level fluctuations also exhibit seasonal patterns that are correlated with regional aquifer conditions, with a lag of 2 months after seasonal rainfall. Interannual variability in rainfall and water levels was observed. From 2010 to 2012, rainfall consistently remained below its mean climatic value, due to a prolonged La Niña event, while the exceptionally wet conditions in 2020 were also associated with La Niña. Extreme and anomalous hydrometeorological events, such as those following tropical storm Cristobal in 2020, revealed the fragility of Bacalar Lagoon, causing a notable transformation in lake color and transparency, shifting it from its typical oligotrophic state to eutrophic conditions that lasted longer than a year. These color changes raise questions about the factors impacting ecological health in tropical karstic regions. Additional factors affecting water quality in the BL in 2020, such as deforestation, coastline changes, and urban growth, warrant further investigation. Our study can serve as a starting landmark.

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“…被誉为"亚洲水塔" (Immerzeel et al, 2010;Zhang et al, 2019), 是地球上海拔最高、数量最多和面积最大的高原内陆湖区。盐湖是青藏高原最主要的湖泊类型(贾沁贤等, 2017), 数量占面积大于1 km 2 的湖泊总数量的30% (郑喜玉, 1988) (Williams, 1991;郑绵平和齐文, 2006), 随着科学技术的发展, 对盐湖生物学的研究越来越重视, 国内学者们先后对西藏 (沈嘉瑞和宋大祥, 1963, 1964, 1965)、青海(许木启等, 2002)、内蒙古 (霍元子等, 2005)等地的一些盐湖的浮游生物多样性进行了研究。目前对于湖泊底栖生物特别是自由生活线虫的研究较少 (Wu & Liang, 1999;戴友芝等, 2000;李金金和黄勇, 2009;闫福桂等, 2010), 对于内陆淡水及高盐湖泊的研究也远没有海洋生境的研究广泛 (Hakenkamp & Morin, 2000;Ristau et al, 2015;Marco et al, 2021;Jesús-Navarrete & Legorreta, 2022) 物种多样性指数, 自由生活线虫丰富度指数(d) (Margalef, 1958)、Shannon-Wiener多样性指数(H') (Shannon & Weaver, 1963)、均匀度指数(J) (Pielou, 1977)和Simpson多样性指数(1 -λ) (Simpson, 1949) 的计算公式如下:…”

Section: 青藏高原气候严寒发育了大量的湖泊和冰川unclassified

Diversity and community characteristics of free-living nematodes in plateau salt lakes in Nagqu City, Tibet

Zhang¹,

Zhao²,

Sun³

et al. 2023

Biodiversity Science

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Aim: Being considered effective indicator species, free-living nematodes have great application potential in ecological monitoring. Therefore, the study of free-living nematodes in the Tibetan Plateau salt lakes may be of great importance to improve the benthic communities and ecological environment assessment systems for plateau salt lakes. The aim of this study is to assess diversity and community structure of free-living nematodes. Methods: Quantitative investigations of free-living nematodes and their relationships with environmental factors were conducted by collecting sediment samples in 11 plateau salt lakes, including Kyêbxang Co, Dagze Co and Yibug Caka etc. in Nagqu City, Tibet, China, from July to August 2020. Results: Total average abundance of free-living nematodes was 13.98 ± 22.21 ind./10 cm 2 . The abundance of free-living nematodes in euhalines (32.31-49.85) (19.33 ± 29.99 ind./10 cm 2 ) was higher than those in oligohalines (0.64-4.70) (12.43 ± 4.18 ind./10 cm 2 ) and mesohalines (10.20-11.82) (3.67 ± 0.73 ind./10 cm 2 ). A total of 21 genera,•研究报告•

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Biological traits analysis of free-living nematodes as indicators of environmental quality at Lake Bacalar, Mexico

Cited by 5 publications

References 49 publications

Discovering the fish fauna of a lagoon from the southeast of the Yucatan Peninsula, Mexico, using DNA barcodes

Discovering the fish fauna of a lagoon from the southeast of the Yucatan Peninsula, Mexico, using DNA barcodes

Investigating the Morphometry and Hydrometeorological Variability of a Fragile Tropical Karstic Lake of the Yucatán Peninsula: Bacalar Lagoon

Diversity and community characteristics of free-living nematodes in plateau salt lakes in Nagqu City, Tibet

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