Figure 5 - uploaded by Gaël Denys
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-Distribution map of the three recognized Barbatula spp. in France and Spain adapted and modified from Kottelat and Freyhof (2007): Barbatula leoparda in yellow, Barbatula barbatula in blue and Barbatula quignardi in orange. Locations: Têt River at Nefiach (1), Tech River at Céret (2) and at Elne (3).
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This study described a new stone loach species in France, Barbatula leoparda, which is endemic to French Catalonia (Têt and Tech river drainages). Seven specimens were compared to 49 specimens of B. barbatula (Linnaeus, 1758) and 71 specimens of B. quignardi (Băcescu-Meşter, 1967). This new species is characterized by the presence of blotches on th...
Context in source publication
Context 1
... leoparda is located in the rivers Têt and Tech in southern France (Fig. 5). It occurs principally in foothill section (> 100 m of altitude) where the populations are more abundant than in lowland section. This area is characterized by a predominantly Mediterranean rainfall regime with two noticeable low rain periods (a large one in summer, and a small one in the heart of the winter), as well as periods of ...
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... This difference had however not been checked with molecular data. Combining morphological and molecular data led to the description of Barbatula leoparda Gauliard, Dettai, Persat, Keith and Denys, 2019 in French Catalonia, and highlighted the need for a revision of B. quignardi (Gauliard et al., 2019). ...
... This difference had however not been checked with molecular data. Combining morphological and molecular data led to the description of Barbatula leoparda Gauliard, Dettai, Persat, Keith and Denys, 2019 in French Catalonia, and highlighted the need for a revision of B. quignardi (Gauliard et al., 2019). ...
... Geiger et al. (2014) grouped samples from the Rhône river with this species according to mitochondrial data. However, Băcescu-Meşter (1967) and Gauliard et al. (2019) highlighted morphological differences between the populations from the Lez River and the Rhône catchment. We prefer to consider each population separated until more data is available. ...
This study revalidates Barbatula hispanica, previously considered a junior synonym of B. quignardi . This species is found in the Ebro drainage and in Cantabria (Spain) as well as in the Adour drainage (Southwestern France). It is characterized by an upper lip with a well-marked medial incision and an interorbital width 18.5–33.7% of the HL. The species delineation is corroborated by the cytochrome oxidase subunit 1 molecular marker. We provide the sequence of 12S rDNA (950 bp) as reference for environmental DNA studies, and discuss also the taxonomy of B. quignardi which would be restricted to the Lez River.
... The specimen (41.7 mm of standard length, SL) was caught in the type locality of B. quignardi: Lez River at Prades-le-Lez (Hérault Dept.) on the 24 Novem-ber 2010, by Gaël Denys and the Office National de l'Eau et des Milieux Aquatiques (ONEMA) (Fig. 1). It was morphologically identified following Gauliard et al. (2019) with a pelvic-fin length of 15.4% SL, a caudal peduncle depth 1.7 times in its length and no blotch on the belly and the jugular area. These morphomeristic data as well as the origin (type locality) make certain its belonging to the right species. ...
The complete mitochondrial DNA sequence of Barbatula quignardi (Teleostei, Nemacheilidae) was sequenced from a museum voucher caught in its type locality (Lez River). The sequence was 16,641 bp in length, consisted of 13 protein-coding genes, 22 transfer RNA genes including 2 tRNA-Leu and 2 tRNA-Ser, 2 ribosomic RNA genes and the control region. Intergenic space and overlapping gene sequences were found. The base
composition of the whole mtDNA was 28.7% A, 26.2% T, 27.2% C and 17.9% G.
... The cytochrome oxidase subunit 1 (COI; 592 bp) mitochondrial marker was amplified for molecular delineation. We also provide the sequences for the complete 12S rDNA (12S; 962 bp) for type specimens of each of the new described species (Gauliard et al., 2019), as they are often used for environmental DNA inventories (e.g. Valentini et al., 2016). ...
French minnows of the genus Phoxinus are revised based on molecular data (COI and 12S rDNA markers), morphological characters and nuptial colouration patterns. The results delineate six groups of populations, which are recognised as species. Phoxinus phoxinus is found in eastern France in the lower and middle Rhine and Seine drainages. Phoxinus bigerri occurs in the Adour drainage and populations from the Lake Geneva basin and the upper Rhine drainage are identified as Phoxinus csikii. Phoxinus dragarum, new species, from the Garonne drainage, is distinguished by its unique nuptial colour pattern (green stripe in Z3 reaching up to the anal fin base and Z4 greenish yellow in male; Z4 green-ochre and black line below in Z5 reaching from the pectoral fin bases to the anal fin base in female), and by an incomplete lateral line generally reaching to a point in front of the anal fin base or just shortly beyond the origin of the last anal fin ray. Phoxinus fayollarum, new species, from the Loire drainage, is distinguished by its unique nuptial colour pattern (green bars in Z3 and Z4, Z4 bright yellow, and belly red in male; green stripe in Z3, Z4 yellow-pinkish, and red spots at the pectoral, pelvic and anal fin base in female). Minnows of the Rhône drainage are identified as Phoxinus septimaniae. We consider Pisciculus varius and Phoxynus montanus as nomben oblitum and Phoxinus septimaniae as nomen protectum, and Leuciscus obtusus as incertae sedis within Leuciscidae.
The occurrence of the Stone loach Barbatula barbatula (L., 1758) in Piedmont, NW Italy: a temporary appearance? (Actinopterygii: Nemacheilidae). In summer 2020 and 2021 some specimens of the Stone loach were collected in the Piccola Dora Stream (high Dora Riparia River drainage) both in its upper French stretch and in the lower Italian one (Turin Metropolitan Province). According to our morphological study, the specimens were identified as Barbatula barbatula (Linnaeus, 1758), nevertheless this widespread Eurasian species, could be carefully revised, both in its anatomic and genetic characters. Following the first, surprising finding of the Stone loach, we planned intense field work in the high Dora Riparia drainage, just to obtain more detailed information about the Stone loach population living in this alpine area: our sampling activity seems to prove the absence of a rich and self-sustaining population, at least in the Italian territory. However few observations were carried out in the upper French stretch of the Piccola Dora Stream. In Northern Italy, the Stone loach was previously reported in its central and eastern portion: so, our record here reported, however not native and unestablished, extends the occurrence of the Stone loach to the westernmost part of the Po drainage in NW Italy. KEY WORDS-Western Po River drainage, Cesana Torinese (TO), Claviere (TO), France-Montgenèvre, Torrente Piccola Dora, exotic fish species. RIASSUNTO-Alcuni esemplari di cobìte barbatello sono stati raccolti nelle estati del 2020 e del 2021 nel Torrente Piccola Dora, alto bacino del Fiume Dora Riparia, sia nel tratto iniziale scorrente in Francia che in quello successivo, compreso nell'area provinciale della Città Metropolitana di Torino. L'analisi morfologica effettuata sugli esemplari a nostra disposizione ed il confronto con i taxa segnalati sul vicino territorio francese, portano a ritenere gli esemplari di questa nuova stazione italiana come appartenenti alla specie Barbatula barbatula (Linnaeus, 1758), un taxon ampiamente diffuso in Eurasia, ma che necessita di una revisione sistematica, su base morfologica e molecolare. Le ricerche condotte in quest'area, a seguito del primo e sorprendente ritrovamento, non hanno evidenziato la presenza di una popolazione in grado di autoriprodursi, ma, al contrario, supportano l'ipotesi di una comparsa temporanea di questa specie ittica, quanto meno nel tratto di torrente scorrente nel territorio italiano. La segnalazione di cobìte barbatello nel territorio piemontese riportata in questa nota, pur riferita ad una specie qui alloctona e di possibile presenza occasionale, amplia notevolmente l'areale del cobìte barbatello in Nord Italia, estendendolo alle estreme propaggini occidentali del bacino del Po. INTRODUZIONE La famiglia Nemacheilidae, compresa nel va-stissimo ordine dei Cypriniformes, è rappresen-tata da piccoli pesci bentonici somiglianti ai cobìti propriamente detti (fam. Cobitidae), tanto che nel passato vennero inseriti per molti anni in quest'ultimo raggruppamento sistema-tico ed ancora oggi condividono il nome volgare italiano generico di cobìte con le specie di Cobi-tidae sensu stricto, così come quello di "Loach" in lingua inglese. Sono note circa 800 specie di nemacheilidi (più nel dettaglio 945 specie de-scritte, delle quali 793 valide: Fricke et al. 2022), che raggiungono la massima diversità nelle ac-que dolci (ma alcune sono pure presenti nelle acque salmastre) dell'Asia sub-tropicale e tropi-cale (Kottelat, 2012), mentre poche di queste, ri-partite nei due generi Barbatula ed Oxynoema-cheilus, rappresentano la famiglia in Europa, compresa l'Italia nord-orientale (Kottelat & Freyhof, 2007). Nel loro complesso i cobìti, an
Risk analyses for invasive species often assume that the characteristics of future invaders will resemble those already successful, but these features may change.
Here, we use data from more than 3,500 fish sampling events, sequencing of mitochondrial and nuclear genes and analyses of several traits describing non‐native fish to describe the irruption and rapid expansion of non‐native loaches in Catalonia, north‐east Iberian Peninsula, and framing this surge in the knowledge of previous invasions.
We report the establishment of at least five ( Cobitis bilineata , Misgurnus anguillicaudatus , Misgurnus bipartitus , Paramisgurnus dabryanus , and a yet undescribed Barbatula species) non‐native loach species in Catalonia, most of which are currently spreading. Furthermore, one of the two regionally native loach species ( Cobitis paludica ) has been introduced and is spreading through river basins where it is not native.
Genetic analyses were fundamental to understand loach invasions, by clarifying specific statuses, identifying the origin of non‐native populations and/or detecting independent introduction events. Genetic results also highlighted the unresolved taxonomy of loaches, particularly for European Barbatula .
Loaches are recent, diverse, and successful invaders whose traits differ from those of most previously established invasive fish species, signalling potential weaknesses of prevention of biological invasions based on prohibited species lists. We call for the development of more flexible management tools (e.g. based on fish traits and not only on species identities) and prioritising prevention and rapid responses to new introductions.
The data presented here cover ∼4 decades of electrofishing surveys in mainland France rivers. Despite some changes in field protocols and sampling site locations over time, the ASPE database offers a unique set of 47,869 georeferenced and standardised sampling surveys. Fish individuals are identified to species, measured and weighted. Additional information encompasses habitat features as well as "river health" assessment by two fish-based indices. Though preferentially focused on fishes, the surveys also report crayfish data. Numerous studies have been already published using these data, mainly on the fields of macroecology, community and/or population ecology and bioassessment. However, we believe much more knowledge can be gained from the database in fields such as population dynamics or conservation practices in the context of global change.
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 bar-coding 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.
