Results 51 to 60 of about 6,303 (216)
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 +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 +3 more
doaj
Biological research of Grabia River - fifty years of activity [PDF]
, 2005 Grabia, a small still close to natural conditions lowland river, has been an object of special interest for Łódź hydrobiologists for more than 50 years.
Siciński, Jacek, Tończyk, Grzegorz
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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 +2 more
doaj +1 more source
Redescription of Placobdella Multistriata ( Johansson, 1909) (Hirudinea: Glossiphoniidae)
Koedoe: African Protected Area Conservation and Science, 1979 Study of a large number of specimens of Placobdella multistriata (Johansson, 1909) revealed the unsatisfactory nature of the information currently available on this leech. The reason is evidently the fact that previous workers had very limited and poorly
J. H Oosthuizen
doaj +1 more source
Toxic effect of Raphia vinifera on fish leech (Piscicola geometra) [PDF]
, 2001 This study examines acute toxicity of Raphia vinifera on fish leech, Piscicola geometra. The leeches with a mean total length of (TL) 4.2+1.0cm were exposed to various concentrations of both crude powdered and ethanolic extracts of the botanical.
Adebisi, A.A., Fafioye, O.O.
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Molecular Ecology, Volume 34, Issue 22, November 2025.ABSTRACT Evolutionary transitions to carnivory represent profound shifts in feeding mode that are often accompanied by widespread changes in organismal function, behaviour and ecology. Such transitions have evolved numerous times among animals, and predator–prey interactions have been major drivers of animal evolution.
Joseph M. Mack, Alexandra E. Bely
wiley +1 more source
Ingestive behaviour and physiology of the medicinal leech [PDF]
, 1988 Ingestion lasts 25 min in Hirudo medicinalis and is characterized by pharyngeal peristalsis which fills the crop. This peristalsis has an initial rate of 2.4 Hz which decays smoothly to 1.2 Hz at termination of ingestion. During ingestion, the leech body
Dickinson, M. H. +3 more
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Restoration using flow deflectors: a question of fine‐scale spatial layout in headwater stream beds
Restoration Ecology, Volume 33, Issue 7, September 2025.Current European Union objectives for 2030 aim to restore ecosystems to halt biodiversity loss. Here, we studied the consequences of headwater stream restoration by placing large wood in the streambed to act as flow deflectors. We hypothesized that these flow deflectors would create a fine‐scale spatial arrangement of habitats, fostering a diverse and ...
Cybill Staentzel +4 more
wiley +1 more source
Genetic differentiation between Arctic and Antarctic monothalamous foraminiferans [PDF]
, 2018 Monothalamous (single-chambered) foraminifers are a major component of the benthic meiofauna in high latitude regions. Several morphologically similar species are common in the Arctic and Antarctic.
Bowser, Samuel +8 more
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