Non-native freshwater fauna in Portugal: A review

Anastácio, Pedro M.; Ribeiro, Filipe; Capinha, César; Banha, Filipe; Gama, Mafalda; Filipe, Ana Filipa; Rebelo, Rui; Sousa, Ronaldo

doi:10.1016/j.scitotenv.2018.09.251

Cited by 47 publications

(36 citation statements)

References 129 publications

(112 reference statements)

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“…The high level of parental care in this species contributes to high recruitment and establishment success but, unlike for most native species, the larvae do not easily disperse to novel locations, which is confirmed by the lack of larvae collected in previous larval ecology studies [43]. In addition, the vast distribution indicates a wide tolerance to biotic and abiotic factors, a hallmark of a successful invasive species [44][45][46][47]. In Mediterranean-type streams, such as those where A. facetus is found, the fish assemblages are confined to pools, with low flow and loss of connectivity, increasing the pressure from competition and predation (including from terrestrial animals and the avifauna) [48,49].…”

Section: Distribution Of a Facetus In Southern Portugalmentioning

confidence: 73%

“…Although this neotropical cichlid seems to be restricted to a few basins in southern Portugal, its local abundance seems to be increasing. Despite being limited to a few sample sites, this species was dominant (abundance and biomass) in fish fauna already threatened by human activities, and poor in native but highly endemic species [45,58,60]. During the hot and dry summers in Mediterranean regions [61], such as southern Portugal, the fish fauna can be trapped in pools where the temperature increases rapidly and the dissolved oxygen decreases during the day, and even more at night when algae or plants are present; concomitantly, the resources diminish and, thus, the competition increases.…”

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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Section: Distribution Of a Facetus In Southern Portugalmentioning

confidence: 73%

Section: Evaluation Of the Toolkits And Reasons For Increased Invasivmentioning

confidence: 99%

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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“…Finally, as a consequence of global warming, and water deviation for irrigation and livestock, a reduction in water availability is expected in pools in the coming years [14] further increasing the pressure on U. delphinus.…”

Section: Discussionmentioning

confidence: 99%

“…[8]. Invasive bivalves may often become dominant (by attaining high density and biomass rapidly [9,10]), and therefore alter the community structure and function of invaded systems [11][12][13][14].…”

Section: Introductionmentioning

confidence: 99%

Patterns of Distribution of Bivalve Populations in a Mediterranean Temporary River

et al. 2020

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In the south of the Iberian Peninsula, many rivers are intermittent, a state most likely to be exacerbated by climate change, strongly affecting river biota. An additional challenge for native biota in this area is the arrival of new species, frequently aided by humans, and bivalves are particularly at risk. Here we assessed whether the native (Unio delphinus) and invasive (Corbicula fluminea) bivalves differed in habitat use. To address this question, we sampled populations of both species in six isolated permanent pools in the same river during summer in three consecutive years. U. delphinus occurred in all pools, while C. fluminea occurred only in the two most downstream pools. U. delphinus, but not C. fluminea, was found preferentially in patches under riparian vegetation cover. Both species were found in similar sediment types (coarse and fine gravel respectively). Although U. delphinus was present in all pools, recruitment was detected only in 2016, in one pool. We concluded that both species have the potential to compete for space, but a well-developed riparian vegetation cover may provide U. delphinus some advantage against C. fluminea.

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“…A recent study (Ribeiro et al, 2019) conducted in Portugal based on a self-administered questionnaire showed that high consumption rate of fish (between daily, and a minimum of three times a week), was reported by 47% of the respondents.…”

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confidence: 99%

Comparative study on nutritional composition of fish available in Portugal

Marques

Botelho

Guiné

2019

NFS

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Purpose The Mediterranean diet is one of the healthiest eating patterns and relies much on the regular consumption of fish, which is a source of unsaturated fatty acids, protein, vitamins and minerals. The purpose of this study was to describe and compare the macronutrients and micronutrients profile of 24 commercial fish species available in the Portuguese market. Design/methodology/approach A comparative study was undertaken based on nutritional datasheets provided by laboratories and based on the database of the Portuguese National Health Institute Doutor Ricardo Jorge. Findings The results obtained showed that while most of the fish species are low-fat, gilthead and salmon are considered high in fat, with salmon presenting significant amounts of unsaturated fatty acids. The blue shark shows the highest amounts of protein, whereas codfish shows significantly high levels of salt content. Sardine is much richer in terms of vitamins than the other species. With respect to minerals, there is a lot of variation among species. It is worth noticing the skate, with high amounts of sodium, calcium and phosphorous. Statistical analysis evidenced some relations between the properties evaluated, and it was possible to establish two distinct groups of fish through cluster analysis. Practical implications The species evaluated revealed a highly important nutritional value that should be an incentive to their regular consumption. Moreover, a lack of nutritional information about some micronutrients was found in several fish species, which should be studied in future studies. Originality/value This paper fulfils an identified need to compare nutritional composition of fish available in Portugal.

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Non-native freshwater fauna in Portugal: A review

Cited by 47 publications

References 129 publications

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

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

Patterns of Distribution of Bivalve Populations in a Mediterranean Temporary River

Comparative study on nutritional composition of fish available in Portugal

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