Results 41 to 50 of about 514,060 (181)

Seasonal fluctuations attenuate stimulatory or inhibitory impacts of colonial birds on abundance, structure and diversity of soil biota

open access: yesFrontiers in Microbiology, 2023
Soil microorganisms and free-living nematodes were investigated in association with the nesting and roosting habitats of the following piscivorous and omnivorous colonial birds: black kite (Milvus migrans), great cormorant (Phalacrocorax carbo), black ...
Stanislav Pen-Mouratov, Tamar Dayan
doaj   +1 more source

Evaluation of a snail trap prototype for monitoring the intermediate gastropod hosts of Bolbophorus spp. in commercial catfish ponds of the southeastern United States

open access: yesJournal of the World Aquaculture Society, 2023
Bolbophorus damnificus is a digenetic trematode causing significant economic losses within the United States commercial catfish industry. The indirect life cycle is complex, requiring piscivorous birds, aquatic snails, and fish to complete.
Bradley M. Richardson   +6 more
doaj   +1 more source

Survey of some wild birds and their feeding habits in three types at Assiut governorate, Egypt [PDF]

open access: yesArchives of Agriculture Sciences Journal, 2020
The habitat is important for living organisms in terms of food and shelter that it provides. To understand the impact of anthropogenic pressure on the feeding habits of the birds, one-year survey was conducted in three old areas at Assiut governorate ...
M. Omar
doaj   +1 more source

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

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

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

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

Habit and habitual status with relative diversity study of avifauna of Jaipurhat district of Bangladesh

open access: yesJournal of Advanced Biotechnology and Experimental Therapeutics, 2020
This investigation was carried out to observe the migration status and the feeding guild of the avian fauna including the relative diversity of Jaipurhat District of Bangladesh. Data were collected from November 2017 to October 2019.
Al Amin   +5 more
doaj   +1 more source

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