Ecology and conservation of the Mediterranean trout in the central Apennines (Italy)
The Mediterranean brown trout is one of the freshwater fish species complex at greater risk of extinction in the Mediterranean area. The introduction of alien invasive species and their interaction with the native fauna represent some of the major threats to the survival of this species. Currently,...
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ftuniperugiairis:oai:research.unipg.it:11391/1452906 2024-02-11T10:06:45+01:00 Ecology and conservation of the Mediterranean trout in the central Apennines (Italy) Massimo LORENZONI Antonella CAROSI Massimo GIOVANNOTTI Gianandrea LA PORTA Andrea SPLENDIANI Vincenzo CAPUTO BARUCCHI Lorenzoni, Massimo Carosi, Antonella Giovannotti, Massimo LA PORTA, Gianandrea Splendiani, Andrea CAPUTO BARUCCHI, Vincenzo 2019 ELETTRONICO http://hdl.handle.net/11391/1452906 https://doi.org/10.4081/jlimnol.2018.1806 eng eng info:eu-repo/semantics/altIdentifier/wos/WOS:000463363000001 volume:78 issue:1 firstpage:1 lastpage:13 numberofpages:13 journal:JOURNAL OF LIMNOLOGY http://hdl.handle.net/11391/1452906 doi:10.4081/jlimnol.2018.1806 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-85067383633 Mediterranean river basin native trout demographic characteristics environmental features biodiversity conservation info:eu-repo/semantics/article 2019 ftuniperugiairis https://doi.org/10.4081/jlimnol.2018.1806 2024-01-24T18:00:31Z The Mediterranean brown trout is one of the freshwater fish species complex at greater risk of extinction in the Mediterranean area. The introduction of alien invasive species and their interaction with the native fauna represent some of the major threats to the survival of this species. Currently, the genetic variability of the Mediterranean trout is being compromised by the introgressive hybridization with the Atlantic trout (Salmo trutta Linnaeus, 1758). Therefore, it is necessary to gain further knowledge on genetic and demographic characteristics of Mediterranean trout populations, that, combined with environmental and angling data, will allow to undertake sound conservation strategies. The aims of the present study were to analyze: i) the demographic characteristics of the Mediterranean trout in seven central Apennine river basins where native populations are threatened by stocking with the domestic trout of north Atlantic origin; ii) the influence of both environmental parameters and different fishery management strategies on the status of native trout populations. The project focuses on 14 sites included in the Natura 2000 EU wide network of nature protection areas, established under the 1992 Habitat Directive. A total of 25 watercourses were investigated for a total of 32 sampling sites. A census of the fish fauna was carried out by electrofishing at each sampling location. Fish and environmental data were collected in spring and autumn 2014. The results obtained in the present research allowed us to detect the presence of three residual Mediterranean trout populations with a high degree of genetic integrity in the study area. The native trout populations were characterized by higher abundances and higher adult density values. Well-structured native populations with higher legal-size specimens density and poor body conditions in terms of relative weight were observed in the no-fishing areas, probably due to the presence of intraspecific competition phenomena. The environmental analysis confirmed the key ... Article in Journal/Newspaper North Atlantic IRIS Università degli Studi di Perugia Journal of Limnology 78 1 |
institution |
Open Polar |
collection |
IRIS Università degli Studi di Perugia |
op_collection_id |
ftuniperugiairis |
language |
English |
topic |
Mediterranean river basin native trout demographic characteristics environmental features biodiversity conservation |
spellingShingle |
Mediterranean river basin native trout demographic characteristics environmental features biodiversity conservation Massimo LORENZONI Antonella CAROSI Massimo GIOVANNOTTI Gianandrea LA PORTA Andrea SPLENDIANI Vincenzo CAPUTO BARUCCHI Ecology and conservation of the Mediterranean trout in the central Apennines (Italy) |
topic_facet |
Mediterranean river basin native trout demographic characteristics environmental features biodiversity conservation |
description |
The Mediterranean brown trout is one of the freshwater fish species complex at greater risk of extinction in the Mediterranean area. The introduction of alien invasive species and their interaction with the native fauna represent some of the major threats to the survival of this species. Currently, the genetic variability of the Mediterranean trout is being compromised by the introgressive hybridization with the Atlantic trout (Salmo trutta Linnaeus, 1758). Therefore, it is necessary to gain further knowledge on genetic and demographic characteristics of Mediterranean trout populations, that, combined with environmental and angling data, will allow to undertake sound conservation strategies. The aims of the present study were to analyze: i) the demographic characteristics of the Mediterranean trout in seven central Apennine river basins where native populations are threatened by stocking with the domestic trout of north Atlantic origin; ii) the influence of both environmental parameters and different fishery management strategies on the status of native trout populations. The project focuses on 14 sites included in the Natura 2000 EU wide network of nature protection areas, established under the 1992 Habitat Directive. A total of 25 watercourses were investigated for a total of 32 sampling sites. A census of the fish fauna was carried out by electrofishing at each sampling location. Fish and environmental data were collected in spring and autumn 2014. The results obtained in the present research allowed us to detect the presence of three residual Mediterranean trout populations with a high degree of genetic integrity in the study area. The native trout populations were characterized by higher abundances and higher adult density values. Well-structured native populations with higher legal-size specimens density and poor body conditions in terms of relative weight were observed in the no-fishing areas, probably due to the presence of intraspecific competition phenomena. The environmental analysis confirmed the key ... |
author2 |
Lorenzoni, Massimo Carosi, Antonella Giovannotti, Massimo LA PORTA, Gianandrea Splendiani, Andrea CAPUTO BARUCCHI, Vincenzo |
format |
Article in Journal/Newspaper |
author |
Massimo LORENZONI Antonella CAROSI Massimo GIOVANNOTTI Gianandrea LA PORTA Andrea SPLENDIANI Vincenzo CAPUTO BARUCCHI |
author_facet |
Massimo LORENZONI Antonella CAROSI Massimo GIOVANNOTTI Gianandrea LA PORTA Andrea SPLENDIANI Vincenzo CAPUTO BARUCCHI |
author_sort |
Massimo LORENZONI |
title |
Ecology and conservation of the Mediterranean trout in the central Apennines (Italy) |
title_short |
Ecology and conservation of the Mediterranean trout in the central Apennines (Italy) |
title_full |
Ecology and conservation of the Mediterranean trout in the central Apennines (Italy) |
title_fullStr |
Ecology and conservation of the Mediterranean trout in the central Apennines (Italy) |
title_full_unstemmed |
Ecology and conservation of the Mediterranean trout in the central Apennines (Italy) |
title_sort |
ecology and conservation of the mediterranean trout in the central apennines (italy) |
publishDate |
2019 |
url |
http://hdl.handle.net/11391/1452906 https://doi.org/10.4081/jlimnol.2018.1806 |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_relation |
info:eu-repo/semantics/altIdentifier/wos/WOS:000463363000001 volume:78 issue:1 firstpage:1 lastpage:13 numberofpages:13 journal:JOURNAL OF LIMNOLOGY http://hdl.handle.net/11391/1452906 doi:10.4081/jlimnol.2018.1806 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-85067383633 |
op_doi |
https://doi.org/10.4081/jlimnol.2018.1806 |
container_title |
Journal of Limnology |
container_volume |
78 |
container_issue |
1 |
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1790604674631467008 |