Results 21 to 30 of about 312,952 (138)

The helminth fauna of brown trout (Salmo trutta) from a sub-alpine lake revisited after 40 years with introduced European minnow (Phoxinus phoxinus)

open access: yesFauna Norvegica, 2021
The helminth fauna of brown trout (Salmo trutta) in the Norwegian subalpine lake, Øvre Heimdalsvatn was studied by examination of gills, eyes, body cavity, kidney, stomach, pyloric region and intestine in a total of 112 brown trout randomly sampled in ...
Reidar Borgstrøm   +3 more
doaj   +1 more source

SEMANTIC FEATURES OF THE NAMES OF ASTRAKHAN PISCIVOROUS BIRDS

open access: yesHUMANITARIAN RESEARCHES, 2021
The article is devoted to the description of the names of piscivorous birds in the Astrakhan dialects. The nominations of birds in the Russian language constitute a layer of common Slavic vocabulary. The Proto-Slavic vocabulary and wordformation system served as the basis for further historical development.
openaire   +1 more source

The energetic cost of mounting an immune response for Pallas’s long-tongued bat (Glossophaga soricina) [PDF]

open access: yesPeerJ, 2018
The acute phase response (APR) is the first line of defense of the vertebrate immune system against pathogens. Mounting an immune response is believed to be energetically costly but direct measures of metabolic rate during immune challenges contradict ...
Lucia V. Cabrera-Martínez   +2 more
doaj   +2 more sources

Impact of estuarine fronts on the dispersal of piscivorous birds in the German Bight [PDF]

open access: yesMarine Ecology Progress Series, 2001
ABSTRACT: Survey data on seabird distribution at sea, hydrographic data and optical satellite datacollected for the German Bight were used to analyse the variability of the distribution of wintering red-throated diver and black-throated diver Gavia stellata / arctica in relation to oscillations of the JutlandCoastal Current (JCC) and associated surface
H Skov, E Prins
openaire   +1 more source

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   +1 more source

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

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   +1 more source

Boyle and Birds' Company Law

open access: yes, 2011
Boyle & Birds' Company Law is a well established leading textbook for practitioners and those involved in the day-to-day administration of companies.
Birds, John, Clark, Bryan, Boyle, A.J.
core   +3 more sources

Piscivorous Bird Use of Aquaculture and Natural Water Bodies in Mississippi

open access: yesThe Journal of Wildlife Management, 2020
ABSTRACTDouble‐crested cormorants (Phalacrocorax auritus) and great egrets (Ardea alba) have an extensive history of human‐wildlife conflict with the aquaculture industry of western Mississippi, USA, due to their depredation of cultured catfish (Ictalurus spp.).
Paul C. Burr   +4 more
openaire   +2 more sources

The microbiome of African penguins (Spheniscus demersus) under managed care resembles that of wild marine mammals and birds

open access: yesScientific Reports, 2023
Animals under managed care in zoos and aquariums are ideal surrogate study subjects for endangered species that are difficult to obtain in the wild. We compared the fecal and oral microbiomes of healthy, managed African penguins (Spheniscus demersus) to ...
Ana G. Clavere Graciette   +4 more
doaj   +1 more source

Correction: Cormorant Catch Concerns for Fishers: Estimating the Size-Selectivity of a Piscivorous Bird

open access: yesPLoS ONE, 2014
A mathematical expression of "variance" in the first line immediately below Equation number 6 in the "Estimation procedure" of the Materials and Methods is incorrectly given. The correct expression is: exp(2ϴ3+ϴ24)(exp(ϴ24)-1).
Vladimir Troynikov   +6 more
openaire   +4 more sources

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