A new possible breeding site of <i>Alosa fallax</i> (Lacépède 1803) (Actinopterygii: Clupeiformes: Alosidae) on the Tyrrhenian coast of Central Italy
The River Mignone (Tarquinia, Viterbo, central Italy) is one of the best preserved watercourses in Lazio. Here, in April and May of the years 2020-2023, a conspicuous contingent of Alosa fallax (Lacépède 1803) was reported. The frenetic behaviour of the individuals observed, some of which showed sw...
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| Language: | English |
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PAGEPress Publications
2024-04-01
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| Series: | Natural History Sciences |
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| Online Access: | https://sisn.pagepress.org/nhs/article/view/682 |
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| author | Vincenzo Ferri Paolo Crescia Christiana Soccini Stefano Celletti |
| author_facet | Vincenzo Ferri Paolo Crescia Christiana Soccini Stefano Celletti |
| author_sort | Vincenzo Ferri |
| collection | DOAJ |
| description |
The River Mignone (Tarquinia, Viterbo, central Italy) is one of the best preserved watercourses in Lazio. Here, in April and May of the years 2020-2023, a conspicuous contingent of Alosa fallax (Lacépède 1803) was reported. The frenetic behaviour of the individuals observed, some of which showed swollen bellies and considerable size, suggested that this watercourse may represent a potential new breeding station for this threatened migratory euryhaline fish species. The correct recognition of the sex of A. fallax in the field, problematic during the breeding season, is crucial for understanding its population structure as indicators of possible reproduction. To this end, statistical analysis (Mann-Whitney U-test) of 20 morphometric measurements made on individuals captured and subsequently released revealed significant differences between the sexes for seven morphometric characters, confirming a sex ratio compatible with reproduction. However, the presence of a transverse dam with no fish ladder and the dispersion of biocides from farmland in the final stretch may represent a serious threat to effective reproduction.
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| first_indexed | 2024-04-24T11:17:23Z |
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| issn | 2385-0442 2385-0922 |
| language | English |
| last_indexed | 2024-04-24T11:17:23Z |
| publishDate | 2024-04-01 |
| publisher | PAGEPress Publications |
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| series | Natural History Sciences |
| spelling | doaj.art-a6860b82e3cc481483a64c990c5e121f2024-04-11T07:12:51ZengPAGEPress PublicationsNatural History Sciences2385-04422385-09222024-04-0111110.4081/nhs.2024.682A new possible breeding site of <i>Alosa fallax</i> (Lacépède 1803) (Actinopterygii: Clupeiformes: Alosidae) on the Tyrrhenian coast of Central ItalyVincenzo Ferri0Paolo Crescia1Christiana Soccini2Stefano Celletti3Centro Studi Naturalistici Arcadia, Tarquinia (Viterbo)Gruppo Naturalistico della Maremma Laziale (GNML), Località San Giorgio, Tarquinia (Viterbo)Centro Studi Naturalistici Arcadia, Tarquinia (Viterbo)Gruppo Naturalistico della Maremma Laziale (GNML), Località San Giorgio, Tarquinia (Viterbo) The River Mignone (Tarquinia, Viterbo, central Italy) is one of the best preserved watercourses in Lazio. Here, in April and May of the years 2020-2023, a conspicuous contingent of Alosa fallax (Lacépède 1803) was reported. The frenetic behaviour of the individuals observed, some of which showed swollen bellies and considerable size, suggested that this watercourse may represent a potential new breeding station for this threatened migratory euryhaline fish species. The correct recognition of the sex of A. fallax in the field, problematic during the breeding season, is crucial for understanding its population structure as indicators of possible reproduction. To this end, statistical analysis (Mann-Whitney U-test) of 20 morphometric measurements made on individuals captured and subsequently released revealed significant differences between the sexes for seven morphometric characters, confirming a sex ratio compatible with reproduction. However, the presence of a transverse dam with no fish ladder and the dispersion of biocides from farmland in the final stretch may represent a serious threat to effective reproduction. https://sisn.pagepress.org/nhs/article/view/682Alosa fallaxClupeiformesnew breeding siteconservation |
| spellingShingle | Vincenzo Ferri Paolo Crescia Christiana Soccini Stefano Celletti A new possible breeding site of <i>Alosa fallax</i> (Lacépède 1803) (Actinopterygii: Clupeiformes: Alosidae) on the Tyrrhenian coast of Central Italy Natural History Sciences Alosa fallax Clupeiformes new breeding site conservation |
| title | A new possible breeding site of <i>Alosa fallax</i> (Lacépède 1803) (Actinopterygii: Clupeiformes: Alosidae) on the Tyrrhenian coast of Central Italy |
| title_full | A new possible breeding site of <i>Alosa fallax</i> (Lacépède 1803) (Actinopterygii: Clupeiformes: Alosidae) on the Tyrrhenian coast of Central Italy |
| title_fullStr | A new possible breeding site of <i>Alosa fallax</i> (Lacépède 1803) (Actinopterygii: Clupeiformes: Alosidae) on the Tyrrhenian coast of Central Italy |
| title_full_unstemmed | A new possible breeding site of <i>Alosa fallax</i> (Lacépède 1803) (Actinopterygii: Clupeiformes: Alosidae) on the Tyrrhenian coast of Central Italy |
| title_short | A new possible breeding site of <i>Alosa fallax</i> (Lacépède 1803) (Actinopterygii: Clupeiformes: Alosidae) on the Tyrrhenian coast of Central Italy |
| title_sort | new possible breeding site of i alosa fallax i lacepede 1803 actinopterygii clupeiformes alosidae on the tyrrhenian coast of central italy |
| topic | Alosa fallax Clupeiformes new breeding site conservation |
| url | https://sisn.pagepress.org/nhs/article/view/682 |
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