Reproductive isolation, morphological and ecological differentiation among cryptic species of Euchlanis dilatata, with the description of four new species

Kordbacheh, Azar; Shapiro, Ashanti N.; Walsh, Elizabeth J.

doi:10.1007/s10750-019-3892-0

Cited by 11 publications

(5 citation statements)

References 96 publications

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“…For example, the Brachionus plicatilis complex has as many as 15 cryptic species [45]. Several species complexes have already been reported in Mexico [25,[28][29][30]. The geographic location of Mexico (as a corridor between South and North America) [46] also supports the possible occurrence of diverse rotifer species in different federal entities.…”

Section: Discussionmentioning

confidence: 90%

Rotifer Species Diversity in Mexico: An Updated Checklist

2021

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A review of the Mexican rotifer species diversity is presented here. To date, 402 species of rotifers have been recorded from Mexico, besides a few infraspecific taxa such as subspecies and varieties. The rotifers from Mexico represent 27 families and 75 genera. Molecular analysis showed about 20 cryptic taxa from species complexes. The genera Lecane, Trichocerca, Brachionus, Lepadella, Cephalodella, Keratella, Ptygura, and Notommata accounted for more than 50% of all species recorded from the Mexican territory. The diversity of rotifers from the different states of Mexico was highly heterogeneous. Only five federal entities (the State of Mexico, Michoacán, Veracruz, Mexico City, Aguascalientes, and Quintana Roo) had more than 100 species. Extrapolation of rotifer species recorded from Mexico indicated the possible occurrence of more than 600 species in Mexican water bodies, hence more sampling effort is needed. In the current review, we also comment on the importance of seasonal sampling in enhancing the species richness and detecting exotic rotifer taxa in Mexico.

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Section: Discussionmentioning

confidence: 90%

Rotifer Species Diversity in Mexico: An Updated Checklist

2021

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“…Whether this can be considered a case of niche displacement for syntopic species is still premature. Most other rotifer species complexes, such as also those within the genera Euchlanis, Polyarthra, and Synchaeta, revealed cryptic species that differentially respond to the environment (Obertegger et al, 2012(Obertegger et al, , 2014Kordbacheh et al, 2019). Such ecological differentiation has not been disentangled for all cryptic species, and for several of them the differential niche axes amongst cryptic taxa within each complex have not yet been described, e.g.…”

Section: Rotifersmentioning

confidence: 99%

Cryptic diversity, niche displacement and our poor understanding of taxonomy and ecology of aquatic microorganisms

2022

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The analysis of ecological niche is an important task to correctly identify the role exerted by species within ecosystems, to assess their vulnerability, to plan effective measures addressed at fulfilling the postulates of biological conservation, and ultimately to prevent biodiversity loss. However, for the majority of organisms our knowledge about the actual extent of their ecological niche is quite limited. This is especially true for microscopic organisms. Evidence exists that in different geographical areas allegedly conspecific populations can show different, if not antithetical, ecological requirements and not-overlapping ecological niches. This opinion paper discusses whether this “niche displacement” effectively occurs between conspecific populations or if the pattern is rather due to an inaccurate identification of species and/or to an insufficient knowledge about population and community ecology. Hence, some subjectively selected study cases when alleged phenomena of niche displacements take place are presented, and shortfalls in the correct assessment of the identity and ecological niches of microscopic aquatic eukaryotes, namely phytoplankton, zooplankton, and meiofauna are shown.

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“…However, the challenge is still to integrate DNA sequence information in the current taxonomic system (Jörger & Schrödl ). A recent paper describing how to use integrative taxonomy approach to examine boundaries between Euchlanis dilatata cryptic species (Kordbacheh, Shapiro, & Walsh, ) seems to indicate how we can cope with this challenge.…”

Section: Conclusion Ie the Expected Future Of Faunistic Researchmentioning

confidence: 99%

Does the world need faunists? Based on rotifer (Rotifera) occurrence reflections on the role of faunistic research in ecology

Ejsmont-Karabin

2019

Internat Rev Hydrobiol

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Most faunistic studies of large‐scale patterns concern terrestrial vertebrates, whereas smaller organisms, and in particular, freshwater invertebrates like rotifers receive less attention. As a result, the “rotiferologists” effect”, that is sampling intensity, is among the most influential factors observed, globally or locally, on species richness. Because there are many more small, isolated patches of habitats available to the specialist species, greater specialization has occurred in those forms than in ubiquitous species. This rule also applies to rotifers. Results show that: (a) the total number of rotifer species observed in a lake depends on both the number of samples collected and the type and number of lake habitats involved; and (b) the originality (variability) of rotifer fauna in particular lakes is more pronounced with the more species found in a lake. The important purpose of faunistic studies is the registration of indigenous species. The inflow of alien species is currently one of the greatest threats to the preservation of natural fauna. However, if we do not recognize the composition of natural communities, we will not be able to recognize the invaders. The second most important goal is to enable tracking of long‐term changes in species diversity of rotifer fauna. Rotifers seem to be sensitive enough to climate change and pollution of the aquatic environment. Thus, for the reasons described above, faunistics will be still necessary.

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Reproductive isolation, morphological and ecological differentiation among cryptic species of Euchlanis dilatata, with the description of four new species

Cited by 11 publications

References 96 publications

Rotifer Species Diversity in Mexico: An Updated Checklist

Rotifer Species Diversity in Mexico: An Updated Checklist

Cryptic diversity, niche displacement and our poor understanding of taxonomy and ecology of aquatic microorganisms

Does the world need faunists? Based on rotifer (Rotifera) occurrence reflections on the role of faunistic research in ecology

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