A recent record of Romanogobio antipai (Actinopterygii, Cyprinidae, Gobioninae) from the Danube River in Bulgaria
The Danube delta gudgeon, Romanogobio antipai, has been considered to be extinct because there were no reliable recent observations. The latest record confirmed by a voucher specimen dating from 1992. We report here on a specimen of R. antipai collected in 2016 in the Bulgarian sector of the Danube...
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Pensoft Publishers
2019-02-01
|
| Series: | ZooKeys |
| Online Access: | https://zookeys.pensoft.net/article/32434/download/pdf/ |
| _version_ | 1818343470918533120 |
|---|---|
| author | Nina G. Bogutskaya Tihomir Stefanov Alexander M. Naseka Oleg A. Diripasko |
| author_facet | Nina G. Bogutskaya Tihomir Stefanov Alexander M. Naseka Oleg A. Diripasko |
| author_sort | Nina G. Bogutskaya |
| collection | DOAJ |
| description | The Danube delta gudgeon, Romanogobio antipai, has been considered to be extinct because there were no reliable recent observations. The latest record confirmed by a voucher specimen dating from 1992. We report here on a specimen of R. antipai collected in 2016 in the Bulgarian sector of the Danube main stream using a bottom drift net at a depth of 8 m. The species determination is supported by morphological examination including discriminant and cluster analyses in comparison with three syntypes and five non-type specimens of R. antipai, samples of the R. kesslerii species complex and R. vladykovi. Romanogobio antipai most clearly differs from both R. kesslerii and R. vladykovi by proportional measurements (caudal peduncle depth, head width, eye horizontal diameter, and interorbital width), from R. kesslerii also by the number of scales above and below the lateral line (6 and 4, respectively, (vs. commonly 5 and 3), and from R. vladykovi, also by 8½ branched dorsal-fin rays (vs. 7½) and the vertebral caudal region longer than the abdominal vertebral region (abdominal+caudal vertebrae 19+21 or 20+21, vs. commonly 20+20 or variants with a caudal region shorter than the abdominal one). The possibility that R. antipai represents a deep-water cophenotype of either R. kesslerii or R. vladykovi, cannot be excluded. The new record demonstrates that R. antipai is still extant in the lower Danube but may be restricted to greater depths in the main channel and the deltaic branches. |
| first_indexed | 2024-12-13T16:31:06Z |
| format | Article |
| id | doaj.art-45bb0ccd42fe40ed886f913fe233a08e |
| institution | Directory Open Access Journal |
| issn | 1313-2989 1313-2970 |
| language | English |
| last_indexed | 2024-12-13T16:31:06Z |
| publishDate | 2019-02-01 |
| publisher | Pensoft Publishers |
| record_format | Article |
| series | ZooKeys |
| spelling | doaj.art-45bb0ccd42fe40ed886f913fe233a08e2022-12-21T23:38:30ZengPensoft PublishersZooKeys1313-29891313-29702019-02-0182510512210.3897/zookeys.825.3243432434A recent record of Romanogobio antipai (Actinopterygii, Cyprinidae, Gobioninae) from the Danube River in BulgariaNina G. Bogutskaya0Tihomir Stefanov1Alexander M. Naseka2Oleg A. Diripasko3Naturhistorisches Museum WienNational Museum of Natural HistoryNaturhistorisches Museum WienInstitute of Fisheries and Marine EcologyThe Danube delta gudgeon, Romanogobio antipai, has been considered to be extinct because there were no reliable recent observations. The latest record confirmed by a voucher specimen dating from 1992. We report here on a specimen of R. antipai collected in 2016 in the Bulgarian sector of the Danube main stream using a bottom drift net at a depth of 8 m. The species determination is supported by morphological examination including discriminant and cluster analyses in comparison with three syntypes and five non-type specimens of R. antipai, samples of the R. kesslerii species complex and R. vladykovi. Romanogobio antipai most clearly differs from both R. kesslerii and R. vladykovi by proportional measurements (caudal peduncle depth, head width, eye horizontal diameter, and interorbital width), from R. kesslerii also by the number of scales above and below the lateral line (6 and 4, respectively, (vs. commonly 5 and 3), and from R. vladykovi, also by 8½ branched dorsal-fin rays (vs. 7½) and the vertebral caudal region longer than the abdominal vertebral region (abdominal+caudal vertebrae 19+21 or 20+21, vs. commonly 20+20 or variants with a caudal region shorter than the abdominal one). The possibility that R. antipai represents a deep-water cophenotype of either R. kesslerii or R. vladykovi, cannot be excluded. The new record demonstrates that R. antipai is still extant in the lower Danube but may be restricted to greater depths in the main channel and the deltaic branches.https://zookeys.pensoft.net/article/32434/download/pdf/ |
| spellingShingle | Nina G. Bogutskaya Tihomir Stefanov Alexander M. Naseka Oleg A. Diripasko A recent record of Romanogobio antipai (Actinopterygii, Cyprinidae, Gobioninae) from the Danube River in Bulgaria ZooKeys |
| title | A recent record of Romanogobio antipai (Actinopterygii, Cyprinidae, Gobioninae) from the Danube River in Bulgaria |
| title_full | A recent record of Romanogobio antipai (Actinopterygii, Cyprinidae, Gobioninae) from the Danube River in Bulgaria |
| title_fullStr | A recent record of Romanogobio antipai (Actinopterygii, Cyprinidae, Gobioninae) from the Danube River in Bulgaria |
| title_full_unstemmed | A recent record of Romanogobio antipai (Actinopterygii, Cyprinidae, Gobioninae) from the Danube River in Bulgaria |
| title_short | A recent record of Romanogobio antipai (Actinopterygii, Cyprinidae, Gobioninae) from the Danube River in Bulgaria |
| title_sort | recent record of romanogobio antipai actinopterygii cyprinidae gobioninae from the danube river in bulgaria |
| url | https://zookeys.pensoft.net/article/32434/download/pdf/ |
| work_keys_str_mv | AT ninagbogutskaya arecentrecordofromanogobioantipaiactinopterygiicyprinidaegobioninaefromthedanuberiverinbulgaria AT tihomirstefanov arecentrecordofromanogobioantipaiactinopterygiicyprinidaegobioninaefromthedanuberiverinbulgaria AT alexandermnaseka arecentrecordofromanogobioantipaiactinopterygiicyprinidaegobioninaefromthedanuberiverinbulgaria AT olegadiripasko arecentrecordofromanogobioantipaiactinopterygiicyprinidaegobioninaefromthedanuberiverinbulgaria AT ninagbogutskaya recentrecordofromanogobioantipaiactinopterygiicyprinidaegobioninaefromthedanuberiverinbulgaria AT tihomirstefanov recentrecordofromanogobioantipaiactinopterygiicyprinidaegobioninaefromthedanuberiverinbulgaria AT alexandermnaseka recentrecordofromanogobioantipaiactinopterygiicyprinidaegobioninaefromthedanuberiverinbulgaria AT olegadiripasko recentrecordofromanogobioantipaiactinopterygiicyprinidaegobioninaefromthedanuberiverinbulgaria |