Results 31 to 40 of about 751 (125)

Evaluating and Advancing the Use of Shore‐Based Observers for Scientific Sampling and Catch Verification in High‐Volume Fisheries

Fisheries Management and Ecology, Volume 33, Issue 3, Page 612-629, June 2026.
ABSTRACT Shore‐based observers are increasingly being used in place of at‐sea observers to monitor and sample commercial fisheries catch. However, few evaluations assess whether these programs meet their stated goals or how to optimize them, and industry data are rarely tested for accuracy despite serving as the foundation for catch accounting. Using a
Christian Gredzens, Andy Kingham, Jason E. Jannot   +2 more
wiley   +1 more source

More Is Not Always Better: Selective Trait Filtering Governs Assembly Under Emerging Flow Intermittency

Ecology and Evolution, Volume 16, Issue 4, April 2026.
The study examined how increasing flow intermittency affects macroinvertebrate community organisation in newly drying headwater streams. Results showed that drying selectively filters species and trait states, with resistance‐ and resilience‐related survival strategies responding differently to increasing intermittency.
Tamás Bozóki, Júlia Szeles, Gábor Várbíró, Márk Ficsór, Zoltán Csabai, Pál Boda   +5 more
wiley   +1 more source

Leeches (Hirudinea) in aquatic ecosystems of national park “Prielbrusye”

RUDN Journal of Ecology and Life Safety, 2017
The article provides information about the fauna of leeches living in the various reservoirs on especially protected natural territories of the Federal state budget establishment The National Park Prielbrusye.
Andrey Vladimirovich Yakimov, Susanna Konstantinovna Cherchesova, Vladimir Dmitrievich L’vov, Kaplan Khasanovich Zalihanov, Boris Georgievich Kojbaev   +4 more
doaj   +1 more source

Plant balls from a Pomeranian lake, their invertebrate and microplastic components

Oceanological and Hydrobiological Studies, 2023
Two balls with similar diameters (approximately 11–12cm) were found on the bottom of Lake Białe (Kashubian Lake District) at depths of 4m and 7m. The structures were made of tightly-packed plant remains represented mainly by decaying leaves of Larix sp ...
Witalis Bartosz, Kornijów Ryszard
doaj   +1 more source

Abundance and composition of invertebrate-feeding leeches in relation to fish status in ponds

The European Zoological Journal, 2023
Leeches feeding on invertebrates are an important component of freshwater communities, including those dominated by fish, but the effects of fish on their abundance and distribution are not well explored.
M. Nieoczym, R. Mencfel, A. Bielecki, J. M. Cichocka, J. Kloskowski   +4 more
doaj   +1 more source

Atividade predatória de Helobdella triserialis lineata (Hirudinea: Glossiphonidae) sobre formas imaturas de Aedes fluviatilis e Culex quinquefasciatus (Diptera: Culicidae) em laboratório Predatory activity of Helobdella triserialis lineata (Hirudinea: Glossiphonidae) on immature forms of Aedes ftuviatilis and Culex quinquefasciatus (Diptera: Culicidae) in the laboratory

Revista de Saúde Pública, 1984
Foi avaliada a atividade predatória, em laboratório, de Helobdella triserialis lineata (Hirudinea: Glossiphonidae) sobre ovos, larvas e pupas de Aedes fluviatilis e Culex quinquefasciatus (Diptera: Culicidae), bem como a influência da presença desses ...
Rotraut Anna Gertrud Bohlmann Cônsoli, Carlos Tito Guimarães, Cecília Pereira de Souza, Bernadete de Souza Santos   +3 more
doaj   +1 more source

Epidemiology of Leech Infestation in Livestock and Evaluation of Phytolacca dodecanda (Endod) for Aquatic Leech Control in Selected Districts of South, Central, and North Gondar Zones, Northwest Ethiopia

Veterinary Medicine International, Volume 2026, Issue 1, 2026.
The livestock industry in Ethiopia suffers greatly from parasites and parasitic diseases including leech infestation. Leech infestation is a serious disease of animals and occasionally humans, but it is usually ignored. A cross‐sectional study design was carried out from January 2022 to June 2022 to estimate the prevalence of leech infestation in ...
Moges Maru, Abrham Ayele Tsegaye, Zewdu Seyoum Tarekegn, Gashaw Getaneh Dagnaw, Seleshe Nigatu, Abibo Wondie, Elias Kebede, Tigist Kindie, Abiy Maru Alemayehu, Nega Yismaw Alemu, Shimelis Dagnachew, Sumanta Nandi   +11 more
wiley   +1 more source

Fish predation cues induce drifting and emergence in an experimental stream mesocosm system

Limnology and Oceanography, Volume 70, Issue S2, Page S364-S376, December 2025.
Abstract Predator–prey interactions are important drivers of adaptation in aquatic communities, shaping the behavior of invertebrates with cascading effects on community dynamics. Behavioral responses, such as moving with the downstream current (drift) or altering the timing of emergence, are strategies that reduce the risk of predator encounters ...
Anna‐Maria Vermiert, Iris Madge Pimentel, Philipp M. Rehsen, Jonathan Meisner, Martin Horstmann, Arne J. Beermann, Florian Leese, Linda C. Weiss, Ralph Tollrian   +8 more
wiley   +1 more source

FOOD COMPOSITION OF GRAYLING Thymallus thymallus L., FROM THE RIVER KRUŠNICA [PDF]

Croatian Journal of Fisheries, 2008
Total of 118 specimens of grayling (Thymallus thymallus L.) is caught with sport fishing techniques in the river Krušnica. The objectives of this research was to obtain data about the diet composition of these species in natural biotopes.
Azra Bećiraj Bakrač, Aleksandar Ivanc, Marina Piria, Radoslav Dekić   +3 more
doaj  

Filogenia y revisión de los Erpobdelliformes (Annelida, Arhynchobdellida) de México, con base en secuencias de ADN nuclear y mitocondrial

Revista Mexicana de Biodiversidad, 2005
SE ESTUDIAN LAS RELACIONES FILOGENÉTICAS DEL SUBORDEN ERPOBDELLIFORMES, UN GRUPO DE SANGUIJUELAS NO HEMATÓFAGAS DE VERTEBRADOS, CON BASE EN SECUENCIAS DE LA SUBUNIDAD I DEL CITOCROMO C OXIDASA DEL ADN MITOCONDRIAL, 12S ADNR DEL ADN MITOCONDRIAL Y 18S ...
VIRGINIA LEÓN REGAGNON, ALEJANDRO OCEGUERA FIGUEROA, MARK E. SIDDALL   +2 more
doaj   +1 more source