Ex situ reproduction of Portuguese endangered cyprinids in the context of their conservation

Sousa‐Santos, Carla; Gil, Fátima; Almada, Vítor Carvalho

doi:10.1007/s10228-013-0383-6

Cited by 14 publications

(15 citation statements)

References 47 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…In spite of this biotic richness, leuciscids' populations are following the decreasing trends observed in freshwater species worldwide [2], and around 70% of the known species in the region belonging to this taxonomic group present some level of threat to their conservation [3]. Several attempts are currently implemented to counter current trends, including habitat restoration and ex-situ breeding programs targeting several species [4].…”

Section: Introductionmentioning

confidence: 99%

Molecular Epidemiology, Virulence Traits and Antimicrobial Resistance Signatures of Aeromonas spp. in the Critically Endangered Iberochondrostoma lusitanicum Follow Geographical and Seasonal Patterns

et al. 2021

Self Cite

View full text Add to dashboard Cite

Despite the fact that freshwater fish populations are experiencing severe declines worldwide, our knowledge on the interaction between endangered populations and pathogenic agents remains scarce. In this study, we investigated the prevalence and structure of Aeromonas communities isolated from the critically endangered Iberochondrostoma lusitanicum, a model species for threatened Iberian leuciscids, as well as health parameters in this species. Additionally, we evaluated the virulence profiles, antimicrobial resistance signatures and genomic relationships of the Aeromonas isolates. Lesion prevalence, extension and body condition were deeply affected by location and seasonality, with poorer performances in the dry season. Aeromonas composition shifted among seasons and was also different across river streams. The pathogenic potential of the isolates significantly increased during the dry season. Additionally, isolates displaying clinically relevant antimicrobial resistance phenotypes (carbapenem and fluroquinolone resistance) were detected. As it inhabits intermittent rivers, often reduced to disconnected pools during the summer, the dry season is a critical period for I. lusitanicum, with lower general health status and a higher potential of infection by Aeromonas spp. Habitat quality seems a determining factor on the sustainable development of this fish species. Also, these individuals act as reservoirs of important antimicrobial resistant bacteria with potential implications for public health.

show abstract

Section: Introductionmentioning

confidence: 99%

Molecular Epidemiology, Virulence Traits and Antimicrobial Resistance Signatures of Aeromonas spp. in the Critically Endangered Iberochondrostoma lusitanicum Follow Geographical and Seasonal Patterns

et al. 2021

Self Cite

View full text Add to dashboard Cite

show abstract

“…When habitat degradation is irreversible, other conservation measures are required. One of these measures involves the repopulation of habitats with specimens obtained by artificial reproduction (Sousa-Santos et al 2014), albeit the success rate of these procedures is often low (Holčík 1990).…”

Section: Introductionmentioning

confidence: 99%

Seasonal variation of blood biomarkers in huchen, Hucho hucho (Actinopterygii: Salmoniformes: Salmonidae) reared in captivity

Ihuţ¹,

Răducu²,

Cocan³

et al. 2020

Acta Ichthyol. Piscat.

View full text Add to dashboard Cite

“…Captive breeding is increasingly valuable in the conservation of Mediterranean endemic freshwater fishes (Carrizo et al, 2013;Maceda-Veiga, 2013;Sousa-Santos et al, 2014). In particular, Iberian cyprinids, with one of the highest proportions of threatened species recorded to date (Dar-wall et al, 2008), are good candidates for captive breeding and stock enhancement programs (Gil et al, 2010).…”

Section: Introductionmentioning

confidence: 99%

“…In Portugal, there is an ongoing captive breeding program targeting endangered and critically endangered Iberian cyprinids, since 2007 (Sousa-Santos et al, 2014). This program involves the capture of breeders in wild populations, the maintenance of brood stocks for three consecutive generations, the restocking of wild populations with captive-reared fish (ideally after river management actions) and, afterwards, the foundation of new stocks of wild breeders to proceed with the program, maximizing the preservation of the original genetic pool of target populations (see Sousa-Santos et al 2014 for details).…”

Section: Introductionmentioning

confidence: 99%

“…Among other species, this captive breeding program has been focused on the western ruivaco Achondrostoma occidentale (Robalo, Almada, Sousa Santos, Moreira & Doadrio 2005), a cyprinid listed as "Endangered" in the IUCN Red List Table 1. Captive stocks and restocking actions targeting the western ruivaco (based on Sousa-Santos et al 2014). For each stock, we present the year of foundation at the Vasco da Gama Aquarium (VGA, coordinates: 38°41'57.4"N 9°14'21.2"W) and at the Campelo Station (CS, coordinates: 39°59'56.3"N 8°15'57.5"W), the number of breeders used, and the year and number of fish release in the wild.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Growth and age structure in captive and wild stocks of the endangered western ruivaco Achondrostoma occidentale (Cyprinidae)

Mameri¹,

Sousa‐Santos²,

Robalo³

et al. 2018

Limnetica

View full text Add to dashboard Cite

Growth and age structure in captive and wild stocks of the endangered western ruivaco Achondrostoma occidentale (Cyprinidae)Declines in freshwater fish populations are occurring at a fast rate, increasing the importance of ex-situ conservation programs supported by sound knowledge of population dynamics and life-history traits of the target species. We analysed the growth and age structure of wild and captive stocks of the western ruivaco Achondrostoma occidentale, a Portuguese endangered cyprinid, targeted for captive breeding and restocking since 2007. Specifically, we compared maximum size, longevity, and length-at-age among captive and wild populations, restocked and non-restocked. We found considerable variation in length-at-age and longevity between captive-bred and wild fish, with the former generally growing faster and living longer. Analysis of length-age distributions among wild populations suggested a positive effect of restocking actions in fish abundance. Results highlight the value of captive breeding for the conservation of endangered cyprinids, and reinforce the need for detailed data on life-history trait variation between captive and wild stocks to assess the efficiency of ex-situ conservation programs.

show abstract

Ex situ reproduction of Portuguese endangered cyprinids in the context of their conservation

Cited by 14 publications

References 47 publications

Molecular Epidemiology, Virulence Traits and Antimicrobial Resistance Signatures of Aeromonas spp. in the Critically Endangered Iberochondrostoma lusitanicum Follow Geographical and Seasonal Patterns

Molecular Epidemiology, Virulence Traits and Antimicrobial Resistance Signatures of Aeromonas spp. in the Critically Endangered Iberochondrostoma lusitanicum Follow Geographical and Seasonal Patterns

Seasonal variation of blood biomarkers in huchen, Hucho hucho (Actinopterygii: Salmoniformes: Salmonidae) reared in captivity

Growth and age structure in captive and wild stocks of the endangered western ruivaco Achondrostoma occidentale (Cyprinidae)

Contact Info

Product

Resources

About