Uninvited dinner guests: the effect of invasive fish and temperature on the foraging efficiency of southern Iberian chub

Kodde, Alexa; Gkenas, Christos; Cheoo, Gisela; Ribeiro, Filipe; Magalhães, María Filomena

doi:10.29094/fishmed.2016.011

Cited by 4 publications

(6 citation statements)

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“…The species feeds predominantly on insects, small molluscs and crustaceans, and plant materials, but has an opportunistic feeding behaviour (Ribeiro, 2008). It exhibits a high degree of territoriality, especially during the breeding season (April-August; Ribeiro, 2008) when it is most aggressive and territorial (Doadrio, 2001;Kodde et al, 2016;Baduy et al, 2017). The above species' traits have the potential to facilitate the estab-8 Non-native cichlids in Portugal DOI: 10.29094/FiSHMED.2018.001 lishment and spread of A. facetus within Iberian drainages (Figure 4; Supplementary Material), and to significantly affect the host ecosystems via resource competition or predation (Kodde et al, 2016;Baduy, 2017).…”

Section: Discussionmentioning

confidence: 99%

Taxonomic re-evaluation of the non-native cichlid in Portuguese drainages

Carecho¹,

Baduy²,

Guerreiro³

et al. 2018

FiSHMED

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Section: Discussionmentioning

confidence: 99%

Taxonomic re-evaluation of the non-native cichlid in Portuguese drainages

Carecho¹,

Baduy²,

Guerreiro³

et al. 2018

FiSHMED

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“…Its presence in Foupana and Guadiana has been reported by locals since at least the 1970s, and fished in shallowed waters using baited baskets and used for human consumption (personal communication). In the Sado drainage, it has expanded to the mainstream and other tributaries compared to its previously determined presence in the Corona stream [39]. The dispersal of A. facetus across the Sado River drainage is recent, given that very few localities were previously known despite its arrival in 1984 [40].…”

Section: Distribution Of a Facetus In Southern Portugalmentioning

confidence: 96%

“…Direct impacts of A. facetus on native species (such as the decline of native species abundance or the introduction of diseases) were not yet identified. However, there is circumstantial evidence that points to deleterious effects, with recorded activities such as feeding on the eggs or larvae of other species or displacing other fish using highly aggressive behavior [28,29,39].…”

Section: Evaluation Of the Toolkits And Reasons For Increased Invasivmentioning

confidence: 99%

“…On the other hand, water temperature during winter can reach values at least as low as 6.6 • C (National Water Resources Information System-Portugal, available in http://snirh.pt/). The wide thermal amplitude in which A. facetus can live [29,50,51], together with its generalist and opportunist feeding behavior [29,39,58], could be a large advantage in Mediterranean streams, as it may outcompete other species during extreme events. In addition, we have shown that this species also presents salinity tolerance up to 15 PSU and possibly higher for smaller individuals [51,52].…”

Section: Evaluation Of the Toolkits And Reasons For Increased Invasivmentioning

confidence: 99%

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Distribution and Risk Assessment of Potential Invasiveness of Australoheros facetus (Jenyns, 1842) in Portugal

Baduy

Saraiva

Ribeiro

et al. 2019

Fishes

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Invasive species are recognized as a major cause of biodiversity decline. Legal regulations relating to the prevention, control, or eradication of invasive species should always be up-to-date, as the failure to recognize the problem, lack of adequate scientific information, or long legal intervals required to prepare the legislation may result in irreversible, possibly catastrophic, outcomes. This implies constant monitoring of the species distribution and levels of establishment, as well as detailed knowledge about its biology to predict dissemination and viability under changing environmental conditions. Pre-screening kits for potential invasive species are valuable tools for policy makers, as they provide information about if and how management measures should be taken. The Freshwater Fish Invasiveness Scoring Kit (FISK) and the Aquatic Species Invasiveness Screening Kit (AS-ISK) have been suggested as reliable tools to assess the potential risk of a species becoming invasive. The present study highlights the spread of the non-native chameleon cichlid Australoheros facetus in several streams of the major river drainages in southern Portugal and compares the fish assemblages and ecological indices in two selected sites in the Vascão and Odelouca rivers. We reviewed the current knowledge on the distribution, physiology, and behavior of A. facetus, and applied the toolkits FISK v2 and AS-ISK to this species to evaluate whether the species should be classified as invasive in Portugal. Field data show high abundance of the species in most streams and dominance in specific hotspots. The scores reached by the kits (FISK v2: 23; AS-ISK: 37) places A. facetus as a species with high potential of invasiveness and support the recent inclusion of this species in the invasive species list in Portugal (Decree-Law 92/2019), but, most of all, highlights the importance of frequent updates in both the field monitoring and the legal regulation and watch lists of invasive organisms.

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“…A previsibilidade dos caudais é crítica do ponto de vista ecológico, uma vez que os ciclos de vida dos vez que são capturados juvenis de inúmeras espécies marinhas que utilizam os estuários como áreas de viveiro, assim como juvenis de espécies diádromas (p.ex., lampreia-marinha, sável). mais eficientemente pelos recursos tróficos relativamente ao escalo do Sul50 . Em contrapartida, os efeitos da predação do achigã sobre as espécies de peixes nativos não são conclusivos51,52 .…”

unclassified

Peixes

Almeida¹,

al.²

2019

Rios De Portugal: Comunidades, Processos E Alterações

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Uninvited dinner guests: the effect of invasive fish and temperature on the foraging efficiency of southern Iberian chub

Cited by 4 publications

References 1 publication

Taxonomic re-evaluation of the non-native cichlid in Portuguese drainages

Taxonomic re-evaluation of the non-native cichlid in Portuguese drainages

Distribution and Risk Assessment of Potential Invasiveness of Australoheros facetus (Jenyns, 1842) in Portugal

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