Results 41 to 50 of about 518 (171)
The Aggregation of Fish in the Metalimnion Constrains Zooplankton Diel Vertical Migration
ABSTRACT The role of fish predation in zooplankton diel vertical migration (DVM) is well established, where zooplankton move to deep waters during the day—to hide from visual predators in surface layers—and return to the epilimnion at night (i.e., ‘normal’ DVM), to feed on phytoplankton.
Riwan Leroux +3 more
wiley +1 more source
Degree of high phenotypic plasticity in wild populations of Daphnia in early spring
Inducible defenses have been empirically known as defensive phenotypes that are triggered by predator kairomones. We hypothesized that morphological defense of wild Daphnia varies not only with predator density, but also with the predator regime in the ...
Mariko Nagano, Hideyuki Doi
doaj +1 more source
Chaoborus prey capture efficiency in the light and dark1 [PDF]
The strike efficiency of fourth‐instar Chaoborus punctipennis larvae on different size copepods was measured in the light and dark in the laboratory. Dark measurements were made with near‐infrared illumination and a closed circuit television system. There was no significant difference between strike efficiency in the light and dark during either day ...
Michael C. Swift, Richard B. Forwarder.
openaire +1 more source
The Role of Inducible Defence in Ecological Models: Effects of Nonlocal Intraspecific Competition
ABSTRACT Phenotypic plasticity significantly influences species interactions, especially via inducible defensive mechanisms in predator–prey dynamics. This work proposes and explores a predator–prey scenario whereby the prey species demonstrates inducible defence mechanisms against predators.
Sangeeta Saha +2 more
wiley +1 more source
Abstract Genetic diversity of potentially invasive exotic species has been theorized to lead to increased invasion success. However, empirical work investigating this relationship is extremely limited, especially in the context of metacommunity connectivity. Native community connectivity may mitigate the effects of invasion, but such protective effects
Riley T. Lovejoy, Robert A. Hataway
wiley +1 more source
Chaoborus (Chaoborus) obscuripes
Published as part of Bitušík, Peter, Novikmec, Milan, Svitok, Marek & Hamerlík, Ladislav, 2024, New faunistic records of chironomids and phantom midges (Diptera, Chironomidae and Chaoboridae) from Ukraine indicate recent climatic refugia in the Eastern Carpathians, pp.
Bitušík, Peter +3 more
openaire +2 more sources
The primary factor that governs the size and species composition of zooplankton is still a controversial issue and temperature is considered the main factor responsible for latitudinal differences.
Marlene S. Arcifa +5 more
doaj +1 more source
(Uploaded by Plazi from the Biodiversity Heritage Library) No abstract provided.
openaire +2 more sources
Methane‐Derived Carbon Contributes to Fish Biomass in a Deep, Eutrophic Reservoir
ABSTRACT Methanotrophic bacteria oxidise large amounts of biogenic methane produced in freshwater and bind the original methane carbon in their biomass. When these bacteria are consumed by other organisms, methane‐derived carbon enters food webs. Methane‐derived carbon can support a substantial part of invertebrate biomass in some freshwater ecosystems.
Mojmír Vašek +9 more
wiley +1 more source
The diel vertical migration (DVM) of planktonic cladocerans and copepods was investigated in Lake Ştiucii, a natural shallow lake from north-western Romania.
Karina P. Battes, Laura Momeu
doaj +1 more source

