Results 51 to 60 of about 518 (171)

Waterborne transmission largely contributes to the epidemiology of a plankton parasite

Ecology, Volume 107, Issue 3, March 2026.
Abstract Understanding how parasites spread is crucial for preventing infections and predicting epidemic dynamics. These efforts are challenging for environment‐borne parasites because transmission is host density‐independent. We monitored the dynamics of Pasteuria ramosa, a common bacterial parasite of Daphnia magna with prolonged free‐living ...
Christina P. Tadiri, Dieter Ebert
wiley   +1 more source

Multiple stressor effects on water quality in Poplar Bay, Lake of the Woods, Canada: a midge-based assessment of hypolimnetic oxygen conditions over the last two centuries

Journal of Limnology, 2012
Chironomid and Chaoborus (midge) remains preserved in a dated sediment core from Poplar Bay, Lake of the Woods (LOW), Ontario, Canada, were used to assess the effects of multiple stressors (e.g., recent warming and shoreline development) on water quality
Jamie C. Summers, Roberto Quinlan, Joshua Kurek, Andrew M. Paterson, Kathleen M. Rühland, John P. Smol   +5 more
doaj   +1 more source

Chaoborus predation and sex-specific mortality in a copepod [PDF]

Limnology and Oceanography, 1997
The susceptibility to Chaoborus predation in males and in females with and without eggs of the freshwater copepod Eudiaptomus gracilis was studied in field enclosures and by videotaping and analyzing the predation cycle in the laboratory. Female mortality exceeded male mortality both in the field and in the laboratory. Chaoborus predation may therefore
openaire   +1 more source

Effects of environmental and individual variation on time patterns of extinction in small experimental populations

Oikos, Volume 2025, Issue 12, December 2025.
Predicting the fate of small populations is essential in ecology, epidemiology and conservation biology. Small populations can go extinct quickly or can develop into large established populations. These can still go extinct through demographic stochasticity, especially when declines in mean population size or large size fluctuations drive them into an ...
Souleyman Bakker, Tom J. M. Van Dooren, Romain Peronnet, Thomas Tully   +3 more
wiley   +1 more source

Hydroacoustic assessment of fish and Chaoborus (Diptera-Chaoboridae) distribution in three Neotropical lakes Avaliação hidroacústica da distribuição de peixes e Chaoborus sp. (Diptera-Chaoboridae) em três lagos neotropicais

Acta Limnologica Brasiliensia, 2012
AIM: This study aims to demonstrate the potential of hydroacoustics in the study of behavior of the invertebrate Chaoborus and fish in neotropical water environments; METHODS: Synoptic campaigns were conducted in May and June-2008 in Dom Helvécio and ...
José Fernandes Bezerra-Neto, Ludmila Silva Brighenti, Nelson Azevedo Santos Teixeira de Mello, Ricardo Motta Pinto-Coelho   +3 more
doaj  

Where Do You Fly From? Assessing Aerial Dispersal in Temporary Rivers Using Stable Isotopes

Freshwater Biology, Volume 70, Issue 10, October 2025.
ABSTRACT Dispersal is a crucial ecological process that facilitates gene flow and species exchange within ecosystems. In temporary rivers (TRs), dispersal is a key driver of community assembly because it determines the ability of the organisms to adapt to seasonal drying and maintain stable populations.
José María Fernández‐Calero, Daniel von Schiller, Guillermo Quevedo‐Ortiz, Anna Ticó Pifarré, Núria Cid, Miguel Cañedo‐Argüelles, Núria Bonada   +6 more
wiley   +1 more source

Fluctuations of the population of Daphnia laevis Birge 1878: a six-year study in a tropical lake

Brazilian Journal of Biology
The fluctuation of the population of Daphnia laevis in Lake Jacaré (Middle River Doce, Minas Gerais) was monitored monthly (at one point in the limnetic region) for six years (2002-2007) as part of the Program of Long-Term Ecological Research (LTER/UFMG).
LPM. Brandão, T. Fajardo, E. Eskinazi-Sant'Anna, S. Brito, P. Maia-Barbosa   +4 more
doaj   +1 more source

Vertical migration of Chaoborus larvae is induced by the presence of fish [PDF]

Limnology and Oceanography, 1990
Diel changes in the depth distribution of Chaoborus flavicans larvae in thermally stratified aquaria with a distinct light gradient revealed that the larvae responded behaviorally to the presence of fish. Both the midday and midnight mean depths of the population were greater in the presence of fish.
Piotr Dawidowicz, Joanna Pijanowska, Konrad Ciechomski   +2 more
openaire   +1 more source

Signals in Flux: Investigating the Seasonal Turnover of the Diel Vertical Migration‐Inducing Kairomone 5α‐Cyprinol Sulfate

Freshwater Biology, Volume 70, Issue 10, October 2025.
ABSTRACT 5α‐Cyprinol sulfate (CPS), a kairomone released by cyprinid fishes, induces diel vertical migration (DVM) in Daphnia and thus shapes ecosystem dynamics wherever both taxa co‐occur. Here, we provide the first in situ quantification of CPS turnover, revealing strong temporal variability in this chemical signal and its ecosystem‐wide consequences
Johanna Ahlers, Eric von Elert
wiley   +1 more source

Predators can influence the host‐parasite dynamics of their prey via nonconsumptive effects

Ecology and Evolution, 2020
Ecological communities are partly structured by indirect interactions, where one species can indirectly affect another by altering its interactions with a third species. In the absence of direct predation, nonconsumptive effects of predators on prey have
Nicolette Zukowski, Devin Kirk, Kiran Wadhawan, Dylan Shea, Denon Start, Martin Krkošek   +5 more
doaj   +1 more source