Results 81 to 90 of about 514,060 (181)

Contracaecum fioravantii n. sp. from the black-crowned night heron (Nycticorax nycticorax)

Parasitology
The genus Contracaecum comprises anisakid nematodes with complex life cycles involving aquatic intermediate hosts and piscivorous birds as definitive hosts.
Perla Tedesco, Nadav Davidovich, Sean A. Locke, Andrea Gustinelli, Monica Caffara   +4 more
doaj   +1 more source

A checklist of bird communities In Tamhini Wildlife Sanctuary, the northern Western Ghats, Maharashtra, India

Journal of Threatened Taxa, 2018
Bird communities in Tamhini Wildlife Sanctuary in the northern Western Ghats were studied using line transect and point count methods from the year 2011 to 2013.
Dhananjay Chavan Vinayak, Subhash Vitthal Mali   +1 more
doaj   +1 more source

Riverine Migration Success of Salmonid Smolts Following Their Entrainment in a Hydropower Off‐Channel Diversion in an Upland River

River Research and Applications, Volume 42, Issue 6, Page 1272-1282, July 2026.
ABSTRACT Salmonid fishes typically express anadromy. During their juvenile riverine emigration, their downstream movements can be inhibited by hydropower schemes that entrain fish in their intakes. Here, the riverine migration success of smolts of brown trout Salmo trutta (“trout smolt”) and Atlantic salmon Salmo salar smolts (“salmon smolt”) was ...
Bertram I. C. Warren, J. Robert Britton
wiley   +1 more source

Conserving the World's Specialist Riverine Birds

WIREs Water, Volume 13, Issue 4, July/August 2026.
Specialist riverine birds constitute a diverse bird group globally, highly adapted to rivers and streams. They are at risk from multiple threats to rivers, riparian zones and river catchments including impoundment, hydropower and abstraction; land‐use changes including urbanization and agricultural intensification; traditional and emerging pollutants ...
Ankita Sinha, Nilanjan Chatterjee, Steve J. Ormerod   +2 more
wiley   +1 more source

A case report of Clinostomum species infection of farmed Oreochromis niloticus in Kirinyaga County, Kenya

Sustainable Aquatic Research
A farm study was undertaken at a commercial farm in Sagana town, Kirinyaga County, Kenya, whereit was discovered that Oreochromis niloticus in earthen ponds had massive digenean fluke cysts on the skin.
Robert Waruiru, Nichodemus Kamuti, Finnan Ageng'o, Isaac Mulei, Beatrice Munde, Joel Gatagwu, Otieno Oginga, Paul Mbuthia   +7 more
doaj   +1 more source

Do Coexisting Cryptic Species of Predatory Peacock Bass (Cichliformes: Cichlidae) Partition Their Niche?

Ecology of Freshwater Fish, Volume 35, Issue 3, July 2026.
ABSTRACT The mechanisms facilitating coexistence of cryptic species in sympatry have long puzzled ecologists. Cryptic species have nearly identical morphology and, therefore, would be presumed to have high niche overlap and potential for interspecific competition and competitive exclusion when resources are limited. Lowland rivers in South America have
Benton L. Fry, Kirk O. Winemiller
wiley   +1 more source

Determination of Mercury Concentration in Different Tissues of Coot (Fulica Atra), Mallard (Anas Platyrhynchos) and Great Cormorant (Phalacrocorax Carbon) [PDF]

سلامت و محیط, 2012
Background and Objectives: The heavy metals pollution in aquatic ecosystems especially mercury, always makes concern about health of aquatic organisms. So, the purposes of this study were determination of total mercury in different tissues of the three ...
N Bahramifar, A Esmaili-Sari, J Azami
doaj  

Um nematodeo parasito do pinguim Spheniscus magellanicus (Forster) (Ascaridoidea, Anisakidae) A nematode parasite of the penguin Spheniscus magellanicus (Forster) (Ascaroidea, Anisakidae)

Memorias do Instituto Oswaldo Cruz, 1984
O material estudado foi coletado no "pinguim naufragado", Sphenicus magellanicus (Forster), na baia de Guanabara, Rio de Janeiro e cedido pela bióloga Carla Chediak.
Cláudia Portes Santos
doaj   +1 more source

Seabird bycatch in a Baltic coastal gillnet fishery is orders of magnitude larger than official reports

Avian Conservation and Ecology, 2022
Bycatch, or the incidental capture of non-target species in fisheries, has been identified as one of the major threats affecting seabird populations worldwide.
Julius Morkūnas, Steffen Oppel, Modestas Bružas, Yann Rouxel, Rasa Morkūnė, Daniel Mitchell   +5 more
doaj  

Abundance and prey capture success of Common Terns (Sterna hirundo) and Pied Kingfishers (Ceryle rudis) in relation to water clarity in south-east coastal Ghana

Avian Research, 2018
Background Water clarity may negatively influence rate of plunge diving and prey capture success of piscivorous plunge-diving birds, and therefore has implications for their conservation in polluted urban wetlands.
Lars H. Holbech, Francis Gbogbo, Timothy Khan Aikins   +2 more
doaj   +1 more source