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Dams trigger exponential population declines of migratory fish. [PDF]
Sci AdvThe impact of dams on global migratory fish stocks is a major challenge and remains seriously underestimated. China has initiated a dozen fish rescue programs for the dams on the Yangtze River, focusing on five flagship species―Chinese sturgeon, Chinese paddlefish, Yangtze sturgeon, Chinese sucker, andCoreius guichenoti.
Huang Z, Li H.
europepmc +5 more sources
Partial migration: growth varies between resident and migratory fish. [PDF]
Biol Lett, 2015 Partial migration occurs in many taxa and ecosystems and may confer survival benefits. Here, we use otolith chemistry data to determine whether fish from a large estuarine system were resident or migratory, and then examine whether contingents display differences in modelled growth based on changes in width of otolith growth increments ...
Gillanders BM +3 more
europepmc +8 more sources
The case of a migratory fish bone. [PDF]
Clin Case Rep, 2014 Key Clinical MessageWe describe a case of a liver abscess due to an ingested foreign body that had migrated through the stomach. Endoscopic removal was performed and laparotomy was avoided.
Motallebzadeh R +2 more
europepmc +4 more sources
Fishing for the genetic basis of migratory behavior [PDF]
Cell, 2021 For many species, migrating at just the right time is essential for both survival and reproduction. A new study in salmon localizes a small genomic region associated with migration timing, which in turn affects other physiological traits, suggesting that a seemingly complex suite of migration traits is linked by one "simple" phenotype.
Olivia S, Harringmeyer +2 more
openaire +2 more sources
Effects of plunge pool configuration on downstream passage survival of juvenile blueback herring
Aquaculture and Fisheries, 2021 Anadromous alosines are widespread throughout the Northern Hemisphere. Juveniles of this clade are notoriously fragile animals that are at high risk of injury and death associated with passage at hydroelectric facilities.
Theodore Castro-Santos +3 more
doaj +1 more source
Warming Arctic summers unlikely to increase productivity of shorebirds through renesting
Scientific Reports, 2021 Climate change in the Arctic is leading to earlier summers, creating a phenological mismatch between the hatching of insectivorous birds and the availability of their invertebrate prey.
Sarah T. Saalfeld +4 more
doaj +1 more source
Three crayfish species of different origin in a medium-sized river system: a new state of affairs
Knowledge and Management of Aquatic Ecosystems, 2021 In view of contemporary changes in aquatic environments, determining the distribution of both native and emerging invasive crayfish species is increasingly important.
Radtke Grzegorz +4 more
doaj +1 more source
Ecosphere, 2022 Managers typically estimate wildlife abundance using surveys within a timeframe that favors increased detectability; however, the ability to account for probabilities of inclusion, detection, and/or presence within a given sampling area is often limited.
Daniel P. Bunting +4 more
doaj +1 more source
Diversity, 2021 Once exceptionally abundant, the Rusty Blackbird (Euphagus carolinus) has declined precipitously over at least the last century. The species breeds across the Boreal forest, where it is so thinly distributed across such remote areas that it is extremely ...
Brian S. Evans +4 more
doaj +1 more source
Optimizing surveys of fall‐staging geese using aerial imagery and automated counting
Wildlife Society Bulletin, 2023 Ocular aerial surveys allow efficient coverage of large areas and can be used to monitor abundance and distribution of wild populations. However, uncertainty around resulting population estimates can be large due to difficulty in visually identifying and
Emily L. Weiser +6 more
doaj +1 more source