Diet analysis in piscivorous birds: What can the addition of molecular tools offer? [PDF]
AbstractIn trophic studies on piscivorous birds, it is vital to know which kind of dietary sample provides the information of interest and how the prey can be identified reliably and efficiently. Often, noninvasively obtained dietary samples such as regurgitated pellets, feces, and regurgitated fish samples are the preferred source of information. Fish
Oehm J +3 more
europepmc +5 more sources
Economic impact of predatory piscivorous birds on small-scale aquaculture farms in Kenya
This study assessed the economic loss due to pond-fish predation by piscivorous birds in small-scale aquaculture systems in western Kenya. Piscivorous birds were surveyed in the field through daily focal scan sampling to record abundance and species ...
Nickson Erick Otieno
doaj +4 more sources
The influence of meal size on prey DNA detectability in piscivorous birds. [PDF]
AbstractMolecular methods allow noninvasive assessment of vertebrate predator–prey systems at high taxonomic resolution by examining dietary samples such as faeces and pellets. To facilitate the interpretation of field‐derived data, feeding trials, investigating the impacts of biological, methodological and environmental factors on prey DNA detection ...
Thalinger B +3 more
europepmc +4 more sources
Sex-specific prey partitioning in breeding piscivorous birds examined via a novel, noninvasive approach. [PDF]
AbstractPiscivorous birds frequently display sex‐specific differences in their hunting and feeding behavior, which lead to diverging impacts on prey populations. Cormorants (Phalacrocoracidae), for example, were previously studied to examine dietary differences between the sexes and males were found to consume larger fish in coastal areas during autumn
Thalinger B +4 more
europepmc +4 more sources
Essential trace (Zn, Cu, Mn) and toxic (Cd, Pb, Cr) elements in the liver of birds from Eastern Poland [PDF]
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.) -
Kitowski I., Komosa A., Komosa Z.
core +3 more sources
Cormorant catch concerns for fishers: estimating the size-selectivity of a piscivorous bird. [PDF]
Conflict arises in fisheries worldwide when piscivorous birds target fish species of commercial value. This paper presents a method for estimating size selectivity functions for piscivores and uses it to compare predation selectivities of Great ...
Vladimir Troynikov +6 more
doaj +5 more sources
Connectivity between migrating and landlocked populations of a diadromous fish species investigated using otolith microchemistry [PDF]
Smelt Osmerus eperlanus has two different life history strategies in the Netherlands. The migrating population inhabits the Wadden Sea and spawns in freshwater areas.
Baeyens, W. +5 more
core +5 more sources
First record of <i>Paradilepis scolecina</i> (Rudolphi, 1819) Hsü, 1935 (Cestoda: Gryporhynchidae) in Republic of Korea with notes on ultrastructure and ecological risk in great cormorants, <i>Phalacrocorax carbo sinensis</i> (Staunton, 1796) (Aves: Phalacrocoracidae). [PDF]
Paradilepis scolecina (Rudolphi, 1819) Hsü, 1935 is a tapeworm widely distributed across the globe that uses piscivorous birds as definitive hosts. Although various piscivorous birds inhabit the Republic of Korea (Korea), this species has not previously ...
Lee HW +9 more
europepmc +2 more sources
Population structure of Clinostomum complanatum (Trematoda: Digenea) with new data on haplotype diversity of flukes from Slovakia and Italy. [PDF]
The fluke Clinostomum complanatum, a parasite of piscivorous birds, but also reptiles and rarely mammals, has established several foci in the western Palaearctic regions.
Juhásová Ľ +7 more
europepmc +2 more sources
THE ROLE OF PISCIVOROUS BIRDS OF PODICEPS GENUS IN THE ECOLOGY OF ERYSIPELOTHRIX RHUSIOPATHIAE BACTERIA [PDF]
Purpose. To analyze the role of piscivorous birds of Podiceps genus in the ecology of Erysipelothrix rhusiopathiae bacteria. Methodology. The serological examination of birds was performed using E.
O. Hulai, O. Zhukorskyi
doaj +2 more sources

