Results 11 to 20 of about 1,924 (184)

Impacts of piscivorous birds on salmonid populations and game fisheries in Scotland: a review [PDF]

open access: yesWildlife Biology, 2008
Abstract The Scottish populations of salmonids are important both ecologically and economically. Game fisheries for Atlantic salmon Salmo salar, sea trout Salmo trutta trutta and brown trout Salmo trutta fari are all highly acclaimed and generate substantial levels of income for Scotland, but many populations are in decline and ...
Harris, Catriona   +3 more
core   +4 more sources

New specimens of Yanornis indicate a piscivorous diet and modern alimentary canal. [PDF]

open access: yesPLoS ONE, 2014
A crop adapted for an herbivorous diet of seeds has previously been documented in the Early Cretaceous birds Sapeornis and Hongshanornis. Here we report on several specimens of Yanornis that preserve a crop containing fish.
Xiaoting Zheng   +6 more
doaj   +2 more sources

Historic and contemporary use of catfish aquaculture by piscivorous birds in the Mississippi Delta [PDF]

open access: yesThe Condor, 2020
AbstractPiscivorous birds are the primary source of catfish (Ictalurus spp.) depredation at aquaculture facilities in northwestern Mississippi. Of particular concern is the Double-crested Cormorant (Phalacrocorax auritus), which can cost aquaculture producers millions of dollars annually through the depredation of cultured fish.
Paul C Burr   +4 more
openaire   +3 more sources

Morphological and molecular data on acuariid nematodes in European great cormorants (Phalacrocorax carbo sinensis) and pygmy cormorants (Microcarbo pygmaeus) [PDF]

open access: yesScientific Reports
The family Acuariidae is a speciose group of parasitic nematodes, infecting mostly birds as definitive hosts. This study focused on the characterization of two species of acuariids, collected in two different species of piscivorous birds, the European ...
Perla Tedesco   +6 more
doaj   +2 more sources

Essential trace (Zn, Cu, Mn) and toxic (Cd, Pb, Cr) elements in the liver of birds from Eastern Poland [PDF]

open access: yesActa Veterinaria, 2012
We have focused our study on the concentrations of essential heavy metals (Zn, Cu and Mn) and non-essential trace metals (Pb, Cd and Cr) in the livers of birds from Eastern Poland. The largest mean amount of Zn - as much as 279 mg/kg dry mass (d.m.) -
Komosa A., Kitowski I., Komosa Z.
doaj   +2 more sources

Effects of whitefish speciation on piscivorous birds : A dietary study of piscivorous birds in central and northern Sweden

open access: yes, 2021
The ecological communities we observe today are a product of the bidirectional interactions between ecological and evolutionary processes. Although the effects of ecological processes on population divergence and speciation have been studied extensively, far less is known about the effects of divergence and speciation on ecological dynamics.
Söderlund, Erik
openaire   +2 more sources

An Integrative Approach to Assessing the Impact of Mercury (Hg) on Avian Behaviour: From Molecule to Movement [PDF]

open access: yesJournal of Xenobiotics
Mercury (Hg) pollution is a widespread ecological threat with sublethal effects on wildlife. Birds, due to their ecological diversity and sensitivity, serve as effective models for evaluating the behavioural impacts of Hg exposure.
Dora Bjedov   +6 more
doaj   +2 more sources

Avian diversity and ethnoornithology in Pawukon - a 19th-Century Javanese manuscript : informing contemporary conservation of vulnerable species [PDF]

open access: yesJournal of Ethnobiology and Ethnomedicine
The progressive erosion of Traditional Ecological Knowledge (TEK) in Java, a process exacerbated by colonial disruption, has created a critical disjuncture in biodiversity data.
Rizka Apriani Putri   +2 more
doaj   +2 more sources

18S rRNA gene metabarcoding for investigation of gastrointestinal parasite diversity in great cormorants [PDF]

open access: yesScientific Reports
The great cormorant (Phalacrocorax carbo) is a migratory, fish-eating bird that may act as a carrier for various pathogens, raising potential ecological and public health concerns.
Subin Lee   +7 more
doaj   +2 more sources

Piscivore water bird diversity at freshwater tributaries of Zambezi River, Namibia

open access: yesKoedoe: African Protected Area Conservation and Science
Piscivorous waterbirds enhance wetlands’ diversity and have been seen as bio-indicators of ecological conditions within ecosystems. In addition to their ecological contribution, to wetlands functions and ecosystem services, these birds have been reported
Lucas P. Rutina   +2 more
doaj   +3 more sources

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