Distribution and demography of the critically endangered Lisbon arched-mouth nase, Iberochondrostoma olisiponense

Veríssimo, Ana; Gante, Hugo F.; Santos, Carlos David; Cheoo, Gisela; Oliveira, João M.; Cereja, Rui; Ribeiro, F. Ramôa

doi:10.29094/fishmed.2018.002

Cited by 7 publications

(5 citation statements)

References 1 publication

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Moreover, lotic systems exhibit higher species diversity particularly in the lower reaches of the Vouga where the occurrence of migratory fish like Mugilids is prevalent. According to previous studies, see [64], a high species richness was described in the Tagus mainstem which is consistent with the higher prey diversity found in S. lucioperca in this site, observed as "Other Fish" (generally native fish). Finally, a similar pattern of increasing proportions of Atyidae in the diet has been observed in another top predator, the European catfish (Silurus glanis), in the lotic Tagus that exhibited lower fish prey richness and higher proportions of Crustaceans, see [65].…”

Section: Discussionsupporting

confidence: 90%

Variation in Diet Patterns of the Invasive Top Predator Sander lucioperca (Linnaeus, 1758) across Portuguese Basins

Ribeiro

Gkenas

Gago

et al. 2021

Water

Self Cite

View full text Add to dashboard Cite

The introduction of non-native species is recognized as a major threat to biodiversity, particularly in freshwater ecosystems. Pikeperch Sander lucioperca, is a recent invader to Portugal, primarily providing commercial and angling interest. The aim of this work was to study the diet of this top predator across Portuguese basins and to evaluate its potential impact on recipient ecosystems. In total, 256 pikeperch stomachs from seven basins were examined, of which 88 (n = 34%) were empty. Pikeperch diet was dominated by R. rutilus, M. salmoides and Diptera in northern populations, while A. alburnus, P. clarkii and Atyidae were important prey in more humid highlands. Variation in diet was most strongly linked to latitude and ontogeny, with both size classes showing signs of cannibalism. The population niche breadth remained low and was accompanied by higher individual diet specialization, particularly in northern populations. Pikeperch dietary patterns denoted an opportunistic ability to use locally abundant prey in each ecosystem, and was size dependent, with larger individuals becoming more piscivores, causing a higher impact in the lotic systems. This first perspective about the pikeperch diet presents a very broad view of the feeding traits of this non-native predator across Portugal, being very important to deepen our knowledge about the impact of these introduced piscivores.

show abstract

Section: Discussionsupporting

confidence: 90%

Variation in Diet Patterns of the Invasive Top Predator Sander lucioperca (Linnaeus, 1758) across Portuguese Basins

Ribeiro

Gkenas

Gago

et al. 2021

Water

Self Cite

View full text Add to dashboard Cite

show abstract

“…Although current knowledge of the distributions of Iberian freshwater fishes has been updated (Cabral, 2005;Doadrio, 2001;Doadrio et al, 2011), species with restricted distribution ranges living mainly in places of difficult access are more susceptible to being overlooked. This situation becomes particularly critical for potentially threatened endemic species whose status should be included on national Red Lists (Veríssimo et al, 2018). More than 15 new Iberian endemic freshwater fish species have been described or reassigned since 2001 (Leunda et al, 2009;Doadrio et al, 2011;Mateus et al, 2013;CPE, 2017) and half of them meet criteria to be considered threatened (Doadrio, 2001;Cabral, 2005).…”

mentioning

confidence: 99%

First records of the Vettonian spined loach Cobitis vettonica in Portugal with update on its Iberian distribution

Perdices¹,

Coelho²

2020

FiSHMED

View full text Add to dashboard Cite

“…This far‐reaching penetration seems to be occurring in other Iberian rivers, as exemplified by the Ter, Guadiana, Ebro, and Fluviá cases, with observations at around 80, 70, 50, and 40 km, respectively (Fuentes et al, 2019, N Franch and S Bedmar personal observations). On the other hand, small coastal river basins can be fully reachable for the blue crab, introducing a relevant new threat for their biodiversity, often both valuable and highly threatened (Clavero et al, 2005; Veríssimo et al, 2018).…”

Section: Discussionmentioning

confidence: 99%

Far‐reaching blues: Long‐distance migration of the invasive Atlantic blue crab

Bedmar,

Oficialdegui,

Clavero

2024

Aquatic Conservation

View full text Add to dashboard Cite

Upstream migration of the Atlantic blue crab Callinectes sapidus is well described in its native range, but it is little known in invaded areas. Here, we report several long‐distance migration events of the blue crab in the Iberian Peninsula and use a global database to calculate the probability of occurrence of the species in relation to distance to sea. We then exemplify the potential of blue crab impacts on freshwaters by overlapping its probability of occurrence with that of the critically endangered European eel Anguilla anguilla. Finally, we evaluate the extent to which dam barriers can halt the upstream migration of the blue crab. Invasive blue crab has been detected at 108 km from the sea in the Guadalquivir River (the farthest distance reported in the non‐native range), at 71 km in the Guadiana River and at 53 km in the Ebro River. The probability of occurrence decreased steeply in the first upstream kilometres, but it is still concerning at a dozen kilometres from the river mouth (50% at 19 km, 25% at 38 km, and 3% at 100 km). The blue crab invasive potential widely overlaps (63%) with the Iberian range of the European eel. The blocking effect of dams on the potential invasion of freshwater systems by the blue crab was limited (13%). Our study highlights the need to study the upstream migration of the blue crab within its non‐native range, since it could involve serious impacts in reachable river and stream habitats.

show abstract

Distribution and demography of the critically endangered Lisbon arched-mouth nase, Iberochondrostoma olisiponense

Cited by 7 publications

References 1 publication

Variation in Diet Patterns of the Invasive Top Predator Sander lucioperca (Linnaeus, 1758) across Portuguese Basins

Variation in Diet Patterns of the Invasive Top Predator Sander lucioperca (Linnaeus, 1758) across Portuguese Basins

First records of the Vettonian spined loach Cobitis vettonica in Portugal with update on its Iberian distribution

Far‐reaching blues: Long‐distance migration of the invasive Atlantic blue crab

Contact Info

Product

Resources

About