Enigmatic Bythinella Species in Bükk Mountains With the Description of Bythinella Thermophila N. Sp. (Gastropoda: Amnicolidae)

Glöer, Peter; Varga, András; Mrkvicka, Alexander C.

doi:10.37828/em.2015.3.6

Cited by 2 publications

(3 citation statements)

References 3 publications

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“…The B. thermophila was described only in 2015, from this very branch of the tepid water spring of the Kács Tükör Spring (Glöer et al, 2015). No studies have been carried out so far and we have no factual data on the species.…”

Section: Resultsmentioning

confidence: 96%

“…It is important to note that the tepid water spring is also home to the protected Microcolpia daudebartii (Prevost, 1821), and the recently described, new-toscience snail species Bythinella thermophila Glöer, Varga & Mrkvicka, 2015(Glöer et al, 2015. The Kács Spring waters are also inhabited by the protected Bythinella pannonica (Frauenfeld, 1865).…”

Section: Introductionmentioning

confidence: 99%

“…In the present study, population density records from the direct outlet of the tepidwater Tükör Spring are presented and compared. At the study site, the number of individuals of the accompanying malacofauna of the species under study was also recorded (Microcolpia daudebartii (Prevost, 1821), Bythinella thermophila Glöer, Varga et Mrkvicka, 2015, Bythinella pannonica (Frauenfeld, 1865. The data were recorded in 2006 (general survey), 2010 (drastic reduction) and 2021 (relocation).…”

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confidence: 99%

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On the Theodoxus prevostianus (C. Pfeiffer, 1828) population of the Tükör Spring in Kács (Hungary)

Ötvös¹,

Varga²

2023

Hist. nat. bulg.

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For the past nearly 15 years, we have been conducting freshwater malacological studies in the Kács spring area, a wetland of great importance in the South-Eastern Bükk (Hungary). The focus of our research is the species Theodoxus prevostianus (C. Pfeiffer, 1828). In the present study, population density records from the direct outlet of the tepidwater Tükör Spring are presented and compared. At the study site, the number of individuals of the accompanying malacofauna of the species under study was also recorded (Microcolpia daudebartii (Prevost, 1821), Bythinella thermophila Glöer, Varga et Mrkvicka, 2015, Bythinella pannonica (Frauenfeld, 1865). The data were recorded in 2006 (general survey), 2010 (drastic reduction) and 2021 (relocation). On the stone slab squares used to record individual counts, we detected a high-density population in 2006, a drastically reduced population in 2010 and a high-density population again in 2021.

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Section: Resultsmentioning

confidence: 96%

Section: Introductionmentioning

confidence: 99%

mentioning

confidence: 99%

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On the Theodoxus prevostianus (C. Pfeiffer, 1828) population of the Tükör Spring in Kács (Hungary)

Ötvös¹,

Varga²

2023

Hist. nat. bulg.

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How an Ecological Race Is Forming: Morphological and Genetic Disparity among Thermal and Non-Thermal Populations of Aquatic Lymnaeid Snails (Gastropoda: Lymnaeidae)

et al. 2023

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Hot (geothermal) pools and streams, a specific type of aquatic biotopes having almost worldwide distribution, maintain rich faunas of animals belonging to various taxa. Snails (Gastropoda) represent one of such groups, which form populations in geothermal waterbodies of all continents. Some freshwater snail species produce morphologically distinct hot-water populations, whose rank is often debated (full species or thermal ‘ecotype’, or ‘race’). In this study, we used six species of pond snails (family Lymnaeidae) to investigate the morphological and genetic consequences of infiltration of freshwater snails into geothermal habitats. In particular, we aimed at studying the changes in shell shape and proportions as well as the formation of unique hot-water haplotypes and the occurrence of the latter beyond geothermal waterbodies. All six species studied demonstrate diminutive body size in hot sites accompanied, in four species, by apparent alterations in shell proportions. A phenomenon of phenotypic ‘juvenilization’, when adult and able to reproduce individuals demonstrate shell proportions characteristic for full-grown individuals living under ‘normal’ conditions, is described. Unique ‘thermal’ haplotypes, not found beyond the geothermal sites, were normally restricted to a single locality, and no signs of frequent ‘travels’ of snails from one thermal habitat to another are seen. In the vast majority of cases, these exclusive haplotypes are separated from their ancestors by only a few (1–3) mutational steps, which may indicate their relatively recent origin. We are inclined to relate both size reduction and ‘juvenilization’ to the life-cycle re-adjustment following the penetration of lymnaeids to thermal habitats. The ecological (‘thermal’) intraspecific races of different species, forming in geothermal habitats, exhibit, to a great extent, evolutionary predictability (=convergent evolution; =parallelisms). The dilemma ‘ecological race vs. young species’ in application to the taxonomy of these hot-water populations is briefly discussed.

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Enigmatic Bythinella Species in Bükk Mountains With the Description of Bythinella Thermophila N. Sp. (Gastropoda: Amnicolidae)

Cited by 2 publications

References 3 publications

On the Theodoxus prevostianus (C. Pfeiffer, 1828) population of the Tükör Spring in Kács (Hungary)

On the Theodoxus prevostianus (C. Pfeiffer, 1828) population of the Tükör Spring in Kács (Hungary)

How an Ecological Race Is Forming: Morphological and Genetic Disparity among Thermal and Non-Thermal Populations of Aquatic Lymnaeid Snails (Gastropoda: Lymnaeidae)

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