Two mitochondrial genes (cytochrome oxidase I and cytochrome b) were examined to compare an isolated population of the Italian minnow in the central Apennines to other populations in the species’ range (Po plain) and other European minnow species. Both mitochondrial markers showed a new haplotype, fixed in a sample of 30 specimens, never observed in the main species distribution range, and ostensibly divergent from other Italian minnow haplotypes. The result suggests a long history of isolation, probably preceding the Holocene retreat northwards of the Po River. This relict population is now at serious extinction risk owing to habitat loss and predation by alien trout restocked into the wild for recreational fishing purposes.

Caputo Barucchi, V.; Marconi, M.; Splendiani, A.; Casari, S.; Girardi, M.; Gandolfi, A. (2022). Mitochondrial DNA suggests uniqueness of an isolated population of the Italian minnow (Phoxinus lumaireul Schinz, 1840) (Teleostei: Cyprinidae) in central Apennines (Italy). THE EUROPEAN ZOOLOGICAL JOURNAL, 89 (1): 711-718. doi: 10.1080/24750263.2022.2079738 handle: http://hdl.handle.net/10449/75595

Mitochondrial DNA suggests uniqueness of an isolated population of the Italian minnow (Phoxinus lumaireul Schinz, 1840) (Teleostei: Cyprinidae) in central Apennines (Italy)

Casari, S.;Girardi, M.;Gandolfi, A.
Ultimo
2022

Abstract

Two mitochondrial genes (cytochrome oxidase I and cytochrome b) were examined to compare an isolated population of the Italian minnow in the central Apennines to other populations in the species’ range (Po plain) and other European minnow species. Both mitochondrial markers showed a new haplotype, fixed in a sample of 30 specimens, never observed in the main species distribution range, and ostensibly divergent from other Italian minnow haplotypes. The result suggests a long history of isolation, probably preceding the Holocene retreat northwards of the Po River. This relict population is now at serious extinction risk owing to habitat loss and predation by alien trout restocked into the wild for recreational fishing purposes.
Central Italy
Phoxinus lumaireul
Cytochrome oxidase I
Cytochrome b
Relict populations
Settore BIO/07 - ECOLOGIA
Caputo Barucchi, V.; Marconi, M.; Splendiani, A.; Casari, S.; Girardi, M.; Gandolfi, A. (2022). Mitochondrial DNA suggests uniqueness of an isolated population of the Italian minnow (Phoxinus lumaireul Schinz, 1840) (Teleostei: Cyprinidae) in central Apennines (Italy). THE EUROPEAN ZOOLOGICAL JOURNAL, 89 (1): 711-718. doi: 10.1080/24750263.2022.2079738 handle: http://hdl.handle.net/10449/75595
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