Checklist of Arrenurids (Acari: Hydrachnidia: Arrenuridae) of Mexico, with New Records from the Yucatan Peninsula, and the Description of Five New Species of the Subgenera Megaluracarus and Dadayella

Montes-Ortiz, Lucía; Elías‐Gutiérrez, Manuel; Ramírez-Sánchez, Marcia M.

doi:10.3390/d14040276

Cited by 5 publications

(7 citation statements)

References 19 publications

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“…Our ABGD analysis identified barcode gap between 3-7%, which is lower than threshold obtained for springdwelling water mite species by Blattner et al (2019) (6-9%). Interspecific COI barcode distances for congeneric water mite species have most often been estimated as greater than 10% Więcek et al 2020;Montes-Ortiz et al 2022), and correspond to the values obtained in this study. However, it is noteworthy that among very closely related species of Atractides and Torrenticola interspecific K2P distances had values of about 6% and 4%, respectively (Pešić et al 2020a;Pešić et al 2020b).…”

Section: Discussionsupporting

confidence: 85%

“…The number of studies of water mites that incorporate molecular data is growing, and previously unrecognized diversity has been frequently revealed (e.g. Stålstedt et al 2013;García-Jiménez et al 2017;Pešić et al 2020a;Montes-Ortiz et al 2022). However, considering more than 7,500 described species found on all continents except Antarctica, placed into 55 families, 85 subfamilies and 485 genera (Di Sabatino et al 2008;Smit 2020), only small number of water mite taxa have been involved in those studies.…”

Section: Introductionmentioning

confidence: 99%

“…Further studies with more genes are needed. To date, there are very few studies targeting certain aspects of taxonomical assessments of Arrenurus, where the validity of morphospecies is tested with the application of molecular markers (e.g Blattner et al 2019;Alarcón-Elbal et al 2020;Montes-Ortiz et al 2022)…”

mentioning

confidence: 99%

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Species boundaries among extremely diverse and sexually dimorphic Arrenurus water mites (Acariformes: Hydrachnidia: Arrenuridae)

Więcek

Broda

Proctor

et al. 2023

saa

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Arrenurus (Arrenuridae) is the most species-rich genus of mites with about 1000 named species that inhabit standing, and to a lesser extent, running water habitats around the world. To date, distinguishing species of Arrenurus has been based on male reproductive morphology. Here, we use morphological and molecular approaches to examine species boundaries among 42 named species of Arrenurus, including four named species that have colour variants (red and green A. americanus, and red and blue A. intermedius, A. manubriator and A. apetiolatus), and two unnamed morphospecies. In this study, we examine male genital structures with the use of SEM techniques, and apply mitochondrial (COI barcode region) and nuclear (28S rRNA) gene fragments to test whether male morphology reflects species boundaries in Arrenurus assessed by molecular analyses. Our results reveal that male reproductive morphology parallels species boundaries as judged by molecular data. We discuss the cases of genetically poorly diversified, yet morphologically clearly defined named species. Moreover, we show that based on the species we examined, colour morphs within otherwise morphologically similar specimens represent within-species variation and, in the absence of other diagnostic traits, colour itself can be misleading in distinguishing species. Our outcomes on molecular taxonomy of Arrenurus provide a background for testing hypotheses about speciation rate in water mites.

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Section: Discussionsupporting

confidence: 85%

Section: Introductionmentioning

confidence: 99%

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Species boundaries among extremely diverse and sexually dimorphic Arrenurus water mites (Acariformes: Hydrachnidia: Arrenuridae)

Więcek

Broda

Proctor

et al. 2023

saa

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“…All these animals interact and have a role within this community, as we demonstrate with a mite predating Bosmina tubicen, a strict planktonic cladoceran (Montes-Ortiz et al, 2019). We have currently described this new fauna (Montes-Ortiz et al, 2022) but not at the pace of the "turbo-taxonomy" (Fisher et al, 2017).…”

Section: Taxonomic Impedimentmentioning

confidence: 76%

“…Our proposal is the construction of "rapid baselines" with recovering specimens, when possible, for later description (Montes-Ortiz et al, 2022).…”

Section: Taxonomic Impedimentmentioning

confidence: 99%

Relevance of DNA barcodes for biomonitoring of freshwater animals

Elías‐Gutiérrez

Valdéz-Moreno²

2023

Front. Environ. Sci.

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The COI gene, colloquially named the DNA barcode, is a universal marker for species identification in the animal kingdom. Nevertheless, due to the taxonomic impediment, there are various proposals for molecular operational taxonomic units (MOTUs) because high-throughput sequencers can generate millions of sequences in one run. In the case of freshwater systems, it is possible to analyze whole communities through their DNA using only water or sediment as a sample. Using DNA barcodes with these technologies is known as metabarcoding. More than 90% of studies based on eDNA work with MOTUs without previous knowledge of the biodiversity in the habitat. Despite this problem, it has been proposed as the future for biomonitoring. All these studies are biased toward the Global North and focused on freshwater macrofaunae. Few studies include other regions of the world or other communities, such as zooplankton and phytoplankton. The future of biomonitoring should be based on a standardized gene, for example, COI, the most studied gene in animals, or another secondary consensual gene. Here, we analyzed some proposals with 28S or 12S. The studies on eDNA can focus on analyses of the whole community or a particular species. The latter can be an endangered or exotic species. Any eDNA study focused on a community study should have a well-documented DNA baseline linked to vouchered specimens. Otherwise, it will be tough to discriminate between false positives and negatives. Biomonitoring routines based on eDNA can detect a change in a community due to any perturbation of the aquatic ecosystem. Also, it can track changes along the history of an epicontinental environment through the analyses of sediments. However, their implementation will be complex in most megadiverse Neotropical countries due to the lack of these baselines. It has been demonstrated that a rapid functional construction of a DNA baseline is possible, although the curation of the species can take more time. However, there is a lack of governmental interest in this kind of research and subsequent biomonitoring.

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Checklist of Water mites in Mexico. Historical background and DNA barcoding perspectives

Montes-Ortiz,

Cohuo,

Elías-Gutiérrez

2024

Acarologia

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Water mites are the most ubiquitous, abundant, diverse, and ecologically important group of arachnids in all freshwater environments. In Mexico, despite being a megadiverse country, only 271 species have been recorded so far since 1873. This is probably due to the scarcity of taxonomists in the country or the inherent complex morphology of this group, which challenges its systematics and its integration into other research studies. Molecular identification has been highly useful for practical applications of these organisms, while taxonomic identification work continues. Until now, a species checklist and reference information about water mites diversity and distribution in Mexico is lacking. In this work, we compiled species described or recorded in Mexico and provided preliminary data for a COI barcode library of the water mites in the country. This checklist includes 271 species from 25 families and 61 genera. In addition, the COI barcode library is supplied in a public dataset from the BOLD database (boldsystems.org); it contains 794 sequences corresponding to 103 BINs or putative species, of which only five of them have been identified to the species. We predict that the discovery of hidden diversity of mites will continue and improve after the use of integrative taxonomy tools. Also, their value as indicators of water quality will be re-evaluated, helping in the conservation of freshwater environments and the evaluation of the global warming impact.

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Checklist of Arrenurids (Acari: Hydrachnidia: Arrenuridae) of Mexico, with New Records from the Yucatan Peninsula, and the Description of Five New Species of the Subgenera Megaluracarus and Dadayella

Cited by 5 publications

References 19 publications

Species boundaries among extremely diverse and sexually dimorphic Arrenurus water mites (Acariformes: Hydrachnidia: Arrenuridae)

Species boundaries among extremely diverse and sexually dimorphic Arrenurus water mites (Acariformes: Hydrachnidia: Arrenuridae)

Relevance of DNA barcodes for biomonitoring of freshwater animals

Checklist of Water mites in Mexico. Historical background and DNA barcoding perspectives

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