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6. A comprehensive DNA barcode inventory of Austria’s fish species

Author

Zangl, Lukas, primary, Schäffer, Sylvia, additional, Daill, Daniel, additional, Friedrich, Thomas, additional, Gessl, Wolfgang, additional, Mladinić, Marija, additional, Sturmbauer, Christian, additional, Wanzenböck, Josef, additional, Weiss, Steven J., additional, and Koblmüller, Stephan, additional

Published
2022
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7. Plos One / A comprehensive DNA barcode inventory of Austria’s fish species

Author

Zangl, Lukas, Zangl, Lukas, Schäffer, Sylvia, Daill, Daniel, Friedrich, Thomas, Gessl, Wolfgang, Mladinić, Marija, Sturmbauer, Christian, Wanzenböck, Josef, Weiss, Steven J., Koblmüller, Stephan, Zangl, Lukas, Zangl, Lukas, Schäffer, Sylvia, Daill, Daniel, Friedrich, Thomas, Gessl, Wolfgang, Mladinić, Marija, Sturmbauer, Christian, Wanzenböck, Josef, Weiss, Steven J., and Koblmüller, Stephan

Abstract

Austria is inhabited by more than 80 species of native and non-native freshwater fishes. Despite considerable knowledge about Austrian fish species, the latest Red List of threatened species dates back 15 years and a systematic genetic inventory of Austria’s fish species does not exist. To fulfill this deficit, we employed DNA barcoding to generate an up-to-date and comprehensive genetic reference database for Austrian fish species. In total, 639 newly generated cytochrome c oxidase subunit 1 (COI) sequences were added to the 377 existing records from the BOLD data base, to compile a near complete reference dataset. Standard sequence similarity analyses resulted in 83 distinct clusters almost perfectly reflecting the expected number of species in Austria. Mean intraspecific distances of 0.22% were significantly lower than distances to closest relatives, resulting in a pronounced barcoding gap and unique Barcode Index Numbers (BINs) for most of the species. Four cases of BIN sharing were detected, pointing to hybridization and/or recent divergence, whereas in Phoxinus spp., Gobio spp. and Barbatula barbatula intraspecific splits, multiple BINs and consequently cryptic diversity were observed. The overall high identification success and clear genetic separation of most of the species confirms the applicability and accuracy of genetic methods for bio-surveillance. Furthermore, the new DNA barcoding data pinpoints cases of taxonomic uncertainty, which need to be addressed in further detail, to more precisely assort genetic lineages and their local distribution ranges in a new National Red-List., Version of record

Published
2022
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9. Expression variations in ectodysplasin-A gene (eda) may contribute to morphological divergence of scales in haplochromine cichlids

Author

Wagner, Maximilian, Bračun, Sandra, Duenser, Anna, Sturmbauer, Christian, Gessl, Wolfgang, Ahi, Ehsan Pashay, and Organismal and Evolutionary Biology Research Programme

Subjects
Lake Tanganyika, RUNX2, SHH EXPRESSION, Lake Victoria, Tanzania, African cichlids, WNT, ENHANCER, FISH, Animals, Biology, Phylogeny, Adaptive radiation, General Medicine, Cichlids, Scale morphology, Ectodysplasins, EVOLUTION, Chemistry, Lakes, DIFFERENTIATION, TARGET, East African lakes, Lake Malawi, 1181 Ecology, evolutionary biology, PATTERNS, Human medicine, Gene expression
Abstract

Background Elasmoid scales are one of the most common dermal appendages and can be found in almost all species of bony fish differing greatly in their shape. Whilst the genetic underpinnings behind elasmoid scale development have been investigated, not much is known about the mechanisms involved in moulding of scales. To investigate the links between gene expression differences and morphological divergence, we inferred shape variation of scales from two different areas of the body (anterior and posterior) stemming from ten haplochromine cichlid species from different origins (Lake Tanganyika, Lake Malawi, Lake Victoria and riverine). Additionally, we investigated transcriptional differences of a set of genes known to be involved in scale development and morphogenesis in fish. Results We found that scales from the anterior and posterior part of the body strongly differ in their overall shape, and a separate look on scales from each body part revealed similar trajectories of shape differences considering the lake origin of single investigated species. Above all, nine as well as 11 out of 16 target genes showed expression differences between the lakes for the anterior and posterior dataset, respectively. Whereas in posterior scales four genes (dlx5, eda, rankl and shh) revealed significant correlations between expression and morphological differentiation, in anterior scales only one gene (eda) showed such a correlation. Furthermore, eda displayed the most significant expression difference between species of Lake Tanganyika and species of the other two younger lakes. Finally, we found genetic differences in downstream regions of eda gene (e.g., in the eda-tnfsf13b inter-genic region) that are associated with observed expression differences. This is reminiscent of a genetic difference in the eda-tnfsf13b inter-genic region which leads to gain or loss of armour plates in stickleback. Conclusion These findings provide evidence for cross-species transcriptional differences of an important morphogenetic factor, eda, which is involved in formation of ectodermal appendages. These expression differences appeared to be associated with morphological differences observed in the scales of haplochromine cichlids indicating potential role of eda mediated signal in divergent scale morphogenesis in fish.

Published
2021

12. Appetite regulating genes may contribute to herbivory versus carnivory trophic divergence in haplochromine cichlids

Author

Ahi, Ehsan Pashay, Duenser, Anna, Singh, Pooja, Gessl, Wolfgang, Sturmbauer, Christian, Ahi, Ehsan Pashay, Duenser, Anna, Singh, Pooja, Gessl, Wolfgang, and Sturmbauer, Christian

Abstract

Feeding is a complex behaviour comprised of satiety control, foraging, ingestion and subsequent digestion. Cichlids from the East African Great Lakes are renowned for their diverse trophic specializations, largely predicated on highly variable jaw morphologies. Thus, most research has focused on dissecting the genetic, morphological and regulatory basis of jaw and teeth development in these species. Here for the first time we explore another aspect of feeding, the regulation of appetite related genes that are expressed in the brain and control satiety in cichlid fishes. Using qPCR analysis, we first validate stably expressed reference genes in the brain of six haplochromine cichlid species at the end of larval development prior to foraging. We next evaluate the expression of 16 appetite related genes in herbivorous and carnivorous species from the parallel radiations of Lake Tanganyika, Malawi and Victoria. Interestingly, we find increased expression of two appetite-regulating genes (anorodgenic genes), cart and npy2r, in the brain of carnivorous species in all the three lakes. This supports the notion that appetite gene regulation might play a part in determining trophic niche specialization in divergent cichlid species, already prior to exposure to different diets. Our study contributes to the limited body of knowledge on the neurological circuitry that controls feeding transitions and adaptations in cichlids and other teleosts.

Published
2020
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13. Figure 4 from: Englmaier GK, Rodríguez NV, Waidbacher H, Palandačić A, Tesfaye G, Gessl W, Meulenbroek P (2020) New data on Garra makiensis (Cyprinidae, Labeoinae) from the Awash River (Ethiopia) with remarks on its relationships to congeners on the Arabian Peninsula. ZooKeys 984: 133-163. https://doi.org/10.3897/zookeys.984.55982

Author

Englmaier, Gernot K., primary, Rodríguez, Nuria Viñuela, additional, Waidbacher, Herwig, additional, Palandačić, Anja, additional, Tesfaye, Genanaw, additional, Gessl, Wolfgang, additional, and Meulenbroek, Paul, additional

Published
2020
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14. Figure 8 from: Englmaier GK, Rodríguez NV, Waidbacher H, Palandačić A, Tesfaye G, Gessl W, Meulenbroek P (2020) New data on Garra makiensis (Cyprinidae, Labeoinae) from the Awash River (Ethiopia) with remarks on its relationships to congeners on the Arabian Peninsula. ZooKeys 984: 133-163. https://doi.org/10.3897/zookeys.984.55982

Author

Englmaier, Gernot K., primary, Rodríguez, Nuria Viñuela, additional, Waidbacher, Herwig, additional, Palandačić, Anja, additional, Tesfaye, Genanaw, additional, Gessl, Wolfgang, additional, and Meulenbroek, Paul, additional

Published
2020
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15. Figure 5 from: Englmaier GK, Rodríguez NV, Waidbacher H, Palandačić A, Tesfaye G, Gessl W, Meulenbroek P (2020) New data on Garra makiensis (Cyprinidae, Labeoinae) from the Awash River (Ethiopia) with remarks on its relationships to congeners on the Arabian Peninsula. ZooKeys 984: 133-163. https://doi.org/10.3897/zookeys.984.55982

Author

Englmaier, Gernot K., primary, Rodríguez, Nuria Viñuela, additional, Waidbacher, Herwig, additional, Palandačić, Anja, additional, Tesfaye, Genanaw, additional, Gessl, Wolfgang, additional, and Meulenbroek, Paul, additional

Published
2020
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16. Supplementary material 2 from: Englmaier GK, Rodríguez NV, Waidbacher H, Palandačić A, Tesfaye G, Gessl W, Meulenbroek P (2020) New data on Garra makiensis (Cyprinidae, Labeoinae) from the Awash River (Ethiopia) with remarks on its relationships to congeners on the Arabian Peninsula. ZooKeys 984: 133-163. https://doi.org/10.3897/zookeys.984.55982

Author

Englmaier, Gernot K., primary, Rodríguez, Nuria Viñuela, additional, Waidbacher, Herwig, additional, Palandačić, Anja, additional, Tesfaye, Genanaw, additional, Gessl, Wolfgang, additional, and Meulenbroek, Paul, additional

Published
2020
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17. Figure 6 from: Englmaier GK, Rodríguez NV, Waidbacher H, Palandačić A, Tesfaye G, Gessl W, Meulenbroek P (2020) New data on Garra makiensis (Cyprinidae, Labeoinae) from the Awash River (Ethiopia) with remarks on its relationships to congeners on the Arabian Peninsula. ZooKeys 984: 133-163. https://doi.org/10.3897/zookeys.984.55982

Author

Englmaier, Gernot K., primary, Rodríguez, Nuria Viñuela, additional, Waidbacher, Herwig, additional, Palandačić, Anja, additional, Tesfaye, Genanaw, additional, Gessl, Wolfgang, additional, and Meulenbroek, Paul, additional

Published
2020
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18. Figure 2 from: Englmaier GK, Rodríguez NV, Waidbacher H, Palandačić A, Tesfaye G, Gessl W, Meulenbroek P (2020) New data on Garra makiensis (Cyprinidae, Labeoinae) from the Awash River (Ethiopia) with remarks on its relationships to congeners on the Arabian Peninsula. ZooKeys 984: 133-163. https://doi.org/10.3897/zookeys.984.55982

Author

Englmaier, Gernot K., primary, Rodríguez, Nuria Viñuela, additional, Waidbacher, Herwig, additional, Palandačić, Anja, additional, Tesfaye, Genanaw, additional, Gessl, Wolfgang, additional, and Meulenbroek, Paul, additional

Published
2020
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19. Supplementary material 1 from: Englmaier GK, Rodríguez NV, Waidbacher H, Palandačić A, Tesfaye G, Gessl W, Meulenbroek P (2020) New data on Garra makiensis (Cyprinidae, Labeoinae) from the Awash River (Ethiopia) with remarks on its relationships to congeners on the Arabian Peninsula. ZooKeys 984: 133-163. https://doi.org/10.3897/zookeys.984.55982

Author

Englmaier, Gernot K., primary, Rodríguez, Nuria Viñuela, additional, Waidbacher, Herwig, additional, Palandačić, Anja, additional, Tesfaye, Genanaw, additional, Gessl, Wolfgang, additional, and Meulenbroek, Paul, additional

Published
2020
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20. Figure 1 from: Englmaier GK, Rodríguez NV, Waidbacher H, Palandačić A, Tesfaye G, Gessl W, Meulenbroek P (2020) New data on Garra makiensis (Cyprinidae, Labeoinae) from the Awash River (Ethiopia) with remarks on its relationships to congeners on the Arabian Peninsula. ZooKeys 984: 133-163. https://doi.org/10.3897/zookeys.984.55982

Author

Englmaier, Gernot K., primary, Rodríguez, Nuria Viñuela, additional, Waidbacher, Herwig, additional, Palandačić, Anja, additional, Tesfaye, Genanaw, additional, Gessl, Wolfgang, additional, and Meulenbroek, Paul, additional

Published
2020
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21. Figure 9 from: Englmaier GK, Rodríguez NV, Waidbacher H, Palandačić A, Tesfaye G, Gessl W, Meulenbroek P (2020) New data on Garra makiensis (Cyprinidae, Labeoinae) from the Awash River (Ethiopia) with remarks on its relationships to congeners on the Arabian Peninsula. ZooKeys 984: 133-163. https://doi.org/10.3897/zookeys.984.55982

Author

Englmaier, Gernot K., primary, Rodríguez, Nuria Viñuela, additional, Waidbacher, Herwig, additional, Palandačić, Anja, additional, Tesfaye, Genanaw, additional, Gessl, Wolfgang, additional, and Meulenbroek, Paul, additional

Published
2020
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22. Figure 7 from: Englmaier GK, Rodríguez NV, Waidbacher H, Palandačić A, Tesfaye G, Gessl W, Meulenbroek P (2020) New data on Garra makiensis (Cyprinidae, Labeoinae) from the Awash River (Ethiopia) with remarks on its relationships to congeners on the Arabian Peninsula. ZooKeys 984: 133-163. https://doi.org/10.3897/zookeys.984.55982

Author

Englmaier, Gernot K., primary, Rodríguez, Nuria Viñuela, additional, Waidbacher, Herwig, additional, Palandačić, Anja, additional, Tesfaye, Genanaw, additional, Gessl, Wolfgang, additional, and Meulenbroek, Paul, additional

Published
2020
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24. Figure 3 from: Englmaier GK, Rodríguez NV, Waidbacher H, Palandačić A, Tesfaye G, Gessl W, Meulenbroek P (2020) New data on Garra makiensis (Cyprinidae, Labeoinae) from the Awash River (Ethiopia) with remarks on its relationships to congeners on the Arabian Peninsula. ZooKeys 984: 133-163. https://doi.org/10.3897/zookeys.984.55982

Author

Englmaier, Gernot K., primary, Rodríguez, Nuria Viñuela, additional, Waidbacher, Herwig, additional, Palandačić, Anja, additional, Tesfaye, Genanaw, additional, Gessl, Wolfgang, additional, and Meulenbroek, Paul, additional

Published
2020
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28. Oriental or not: First record of an alien weatherfish (Misgurnus) species in Austria verified by molecular data.

Author

Zangl, Lukas, Jung, Michael, Gessl, Wolfgang, Koblmüller, Stephan, and Ratschan, Clemens

Subjects
GENETIC barcoding, HAPLOTYPES, SPECIES, INTRODUCED species, INSULIN aspart
Abstract

Weatherfishes of the genus Misgurnus are natively distributed across large parts of Eurasia. Since the end of the 20th century, two alien weatherfish species, the oriental weatherfish, Misgurnus anguillicaudatus, and the large-scaled loach, Paramisgurnus dabryanus, have been reported from Europe. Here, we provide a first record of alien Misgurnus for Austria (Inn river). Based on morphology and DNA barcoding in combination with sequences of the nuclear RAG1 gene we found that this alien Austrian weatherfish is neither M. anguillicaudatus nor P. dabryanus, but Misgurnus bipartitus, the northern weatherfish. Fish from further upstream the Inn in Germany, previously identified as M. anguillicaudatus, share their COI haplotype with the Austrian samples and other M. bipartitus, suggesting a misidentification of these German fishes and raising alarm that alien Misgurnus might be already present across large parts of the middle and lower Inn drainage. [ABSTRACT FROM AUTHOR]

Published
2020
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29. Austrian gudgeons of the genus Gobio (Teleostei: Gobionidae): A mixture of divergent lineages.

Author

Zangl, Lukas, Daill, Daniel, Gessl, Wolfgang, Friedrich, Thomas, and Koblmüller, Stephan

Subjects
RIBOSOMAL proteins, HYBRID zones, CYTOCHROME oxidase, NUCLEAR proteins, AMINO acid sequence, OSTEICHTHYES
Abstract

Gudgeons of the genus Gobio are small Eurasian fishes whose systematics, taxonomy, and phylogenetic relationships have been the matter of a long‐standing debate. Two species, Gobio gobio and G. obtusirostris have been reported for Austria, with a potential hybrid zone in the upper Danube. Phylogenetic and phylogeographic analysis of mitochondrial cytochrome oxidase subunit I and control region sequences, as well as nuclear ribosomal protein S7 sequences, however, shows that the proposed hybrid zone is not restricted to the upper Danube, but spans large parts of the Austrian Danube system (upper Danube, Rába & Mur systems). Moreover, our data show that also a third lineage, closely related to species from the southern Balkan, contributed to the gene pool of Austrian Gobio. Patterns of intra‐lineage genetic diversity indicate that the distinct Gobio lineages expanded their distribution recently (most likely post‐glacially) to come into secondary contact and hybridize in the Danube system. [ABSTRACT FROM AUTHOR]

Published
2020
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