Interaction between Halobatrachus didactylus and Anguilla anguilla: What happens when these species occur in sympatry?
International audience The Lusitanian toadfish, Halobatrachus didactylus, and the European eel, Anguilla anguilla, are benthic fish species, which occur in sympatry in the southern Iberian Peninsula and north-west Africa. The consequences of this sympatry were evaluated through the analysis of distr...
Main Authors: | , , , , |
---|---|
Other Authors: | , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
HAL CCSD
2008
|
Subjects: | |
Online Access: | https://hal.archives-ouvertes.fr/hal-00343713 |
id |
ftccsdartic:oai:HAL:hal-00343713v1 |
---|---|
record_format |
openpolar |
spelling |
ftccsdartic:oai:HAL:hal-00343713v1 2023-05-15T13:26:52+02:00 Interaction between Halobatrachus didactylus and Anguilla anguilla: What happens when these species occur in sympatry? Costa, Jose Lino Domingos, Isabel Almeida, Armando Jorge Feunteun, Eric Costa, Maria Jose Biologie des organismes marins et écosystèmes (BOME) Centre National de la Recherche Scientifique (CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Muséum national d'Histoire naturelle (MNHN) 2008 https://hal.archives-ouvertes.fr/hal-00343713 en eng HAL CCSD Paris : Muséum national d'histoire naturelle hal-00343713 https://hal.archives-ouvertes.fr/hal-00343713 ISSN: 0399-0974 EISSN: 2101-0315 Cybium : Revue Internationale d’Ichtyologie https://hal.archives-ouvertes.fr/hal-00343713 Cybium : Revue Internationale d’Ichtyologie, Paris : Muséum national d'histoire naturelle, 2008, 32 (2), pp.111-117 Batrachoididae Anguillidae Anguilla anguilla Halobatrachus didactylus Lusitanian toadfish European eel Portugal Mira estuary spatial segregation trophic relations [SDV.EE.IEO]Life Sciences [q-bio]/Ecology environment/Symbiosis [SDE.BE]Environmental Sciences/Biodiversity and Ecology info:eu-repo/semantics/article Journal articles 2008 ftccsdartic 2020-12-26T12:34:15Z International audience The Lusitanian toadfish, Halobatrachus didactylus, and the European eel, Anguilla anguilla, are benthic fish species, which occur in sympatry in the southern Iberian Peninsula and north-west Africa. The consequences of this sympatry were evaluated through the analysis of distribution, abundance and feeding ecology of both species in the Mira estuary, a small system located on southern Portugal. A total of 1734 toadfish and 196 eels were caught with a beam-trawl in six sampling areas covering the entire estuary. Both species showed burrowing habits and a high diet overlap. The dominance and voracity of the toadfish, which includes glass and yellow eels in its diet, may contribute to explain the spatial segregation between the species, with eels occupying peripheral areas upstream (freshwater and upper estuary) and downstream (Zostera spp. beds near the sea). This spatial segregation reduces habitat availability for eels, which may have serious consequences on a population already subjected to an important loss of habitat due to anthropogenic causes. If this situation results from the interaction between the two species, it may become even more unfavourable to eels because subtropical species like the Lusitanian toadfish may spread northward as a result of raising temperatures caused by climate change Article in Journal/Newspaper Anguilla anguilla European eel Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) Mira ENVELOPE(10.500,10.500,-70.417,-70.417) |
institution |
Open Polar |
collection |
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) |
op_collection_id |
ftccsdartic |
language |
English |
topic |
Batrachoididae Anguillidae Anguilla anguilla Halobatrachus didactylus Lusitanian toadfish European eel Portugal Mira estuary spatial segregation trophic relations [SDV.EE.IEO]Life Sciences [q-bio]/Ecology environment/Symbiosis [SDE.BE]Environmental Sciences/Biodiversity and Ecology |
spellingShingle |
Batrachoididae Anguillidae Anguilla anguilla Halobatrachus didactylus Lusitanian toadfish European eel Portugal Mira estuary spatial segregation trophic relations [SDV.EE.IEO]Life Sciences [q-bio]/Ecology environment/Symbiosis [SDE.BE]Environmental Sciences/Biodiversity and Ecology Costa, Jose Lino Domingos, Isabel Almeida, Armando Jorge Feunteun, Eric Costa, Maria Jose Interaction between Halobatrachus didactylus and Anguilla anguilla: What happens when these species occur in sympatry? |
topic_facet |
Batrachoididae Anguillidae Anguilla anguilla Halobatrachus didactylus Lusitanian toadfish European eel Portugal Mira estuary spatial segregation trophic relations [SDV.EE.IEO]Life Sciences [q-bio]/Ecology environment/Symbiosis [SDE.BE]Environmental Sciences/Biodiversity and Ecology |
description |
International audience The Lusitanian toadfish, Halobatrachus didactylus, and the European eel, Anguilla anguilla, are benthic fish species, which occur in sympatry in the southern Iberian Peninsula and north-west Africa. The consequences of this sympatry were evaluated through the analysis of distribution, abundance and feeding ecology of both species in the Mira estuary, a small system located on southern Portugal. A total of 1734 toadfish and 196 eels were caught with a beam-trawl in six sampling areas covering the entire estuary. Both species showed burrowing habits and a high diet overlap. The dominance and voracity of the toadfish, which includes glass and yellow eels in its diet, may contribute to explain the spatial segregation between the species, with eels occupying peripheral areas upstream (freshwater and upper estuary) and downstream (Zostera spp. beds near the sea). This spatial segregation reduces habitat availability for eels, which may have serious consequences on a population already subjected to an important loss of habitat due to anthropogenic causes. If this situation results from the interaction between the two species, it may become even more unfavourable to eels because subtropical species like the Lusitanian toadfish may spread northward as a result of raising temperatures caused by climate change |
author2 |
Biologie des organismes marins et écosystèmes (BOME) Centre National de la Recherche Scientifique (CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Muséum national d'Histoire naturelle (MNHN) |
format |
Article in Journal/Newspaper |
author |
Costa, Jose Lino Domingos, Isabel Almeida, Armando Jorge Feunteun, Eric Costa, Maria Jose |
author_facet |
Costa, Jose Lino Domingos, Isabel Almeida, Armando Jorge Feunteun, Eric Costa, Maria Jose |
author_sort |
Costa, Jose Lino |
title |
Interaction between Halobatrachus didactylus and Anguilla anguilla: What happens when these species occur in sympatry? |
title_short |
Interaction between Halobatrachus didactylus and Anguilla anguilla: What happens when these species occur in sympatry? |
title_full |
Interaction between Halobatrachus didactylus and Anguilla anguilla: What happens when these species occur in sympatry? |
title_fullStr |
Interaction between Halobatrachus didactylus and Anguilla anguilla: What happens when these species occur in sympatry? |
title_full_unstemmed |
Interaction between Halobatrachus didactylus and Anguilla anguilla: What happens when these species occur in sympatry? |
title_sort |
interaction between halobatrachus didactylus and anguilla anguilla: what happens when these species occur in sympatry? |
publisher |
HAL CCSD |
publishDate |
2008 |
url |
https://hal.archives-ouvertes.fr/hal-00343713 |
long_lat |
ENVELOPE(10.500,10.500,-70.417,-70.417) |
geographic |
Mira |
geographic_facet |
Mira |
genre |
Anguilla anguilla European eel |
genre_facet |
Anguilla anguilla European eel |
op_source |
ISSN: 0399-0974 EISSN: 2101-0315 Cybium : Revue Internationale d’Ichtyologie https://hal.archives-ouvertes.fr/hal-00343713 Cybium : Revue Internationale d’Ichtyologie, Paris : Muséum national d'histoire naturelle, 2008, 32 (2), pp.111-117 |
op_relation |
hal-00343713 https://hal.archives-ouvertes.fr/hal-00343713 |
_version_ |
1766394930931957760 |