Results 101 to 110 of about 74,500 (289)

Experimentally testing the function of anal fins in the bluefin killifish, Lucania goodei

Journal of Fish Biology, EarlyView.
Abstract Anal fins are thought to affect many functions, including swimming, sperm flow and signalling. However, there are few experimental demonstrations of these functions. We manipulated male anal fins by placing a cut in the fin. We found that cut males had lower fertilization rates than uncut males.
Edie Smelko, Rebecca C. Fuller
wiley   +1 more source

Daphnia body size and population dynamics under predation by invertebrate and fish predators in Lago Maggiore: an approach based on contribution analysis

Journal of Limnology, 2008
Predation on Daphnia is size-specific: while zooplanktivorous fish select large, ovigerous females, carrying larger clutches, predation by invertebrates, particularly Cladocera, is generally regarded as acting mainly on young, small, non-ovigerous ...
Dmitry A. VORONOV, Leonard V. POLISHCHUK, Jacobus VIJVERBERG, Marina MANCA   +3 more
doaj   +1 more source

Size‐selective predation accounts for intra‐ and inter‐specific variation of inducible morphological defense of Daphnia

Ecosphere, 2020
Inducible defense is adaptive when prey organisms cope with fluctuations of predation risk, and there exists ample variations of inducible defense both within a species and between species even in a single habitat. Daphnia, a freshwater zooplankton genus,
Mariko Nagano, Takehito Yoshida
doaj   +1 more source

Effects of 432 Hz and 440 Hz Sound Frequencies on the Heart Rate, Egg Number, and Survival Parameters in Water Flea (<i>Daphnia magna</i>) [PDF]

, 2021
Çetin YAĞCILAR, Mehmet Yardımcı
openalex   +1 more source

Amazonian drought of 2023: Environmental conditions relevant to fishes

Journal of Fish Biology, EarlyView.
Abstract This paper provides a platform for the following studies within this Special Issue. ‘Ecophysiology of fishes in the two great tributaries of the Amazon in the Anthropocene’. It documents the water quality conditions and accompanying zooplankton community structure and biomass relative to fish health in the Rio Negro and Rio Solimões during the
Ora E. Johannsson, Thiago L. Nascimento, Helen Agasild, Priit Zingel, Rafael M. Duarte, Gudrun de Boeck, Anne Cremazy, Jhonatan Mota da Silva, Carolyn Morris, Chris M. Wood, Adalberto L. Val   +10 more
wiley   +1 more source

Phenotypically Plastic Responses to Predation Risk Are Temperature Dependent [PDF]

, 2019
Predicting how organisms respond to climate change requires that we understand the temperature dependence of fitness in relevant ecological contexts (e.g., with or without predation risk).
Cressler, Clayton E., DeLong, John, Luhring, Thomas M., Vavra, Janna M.   +3 more
core   +1 more source

Sublethal effects of DBE-DBCH diastereomers on physiology, behavior, and gene expression of Daphnia magna

, 2021
Asmerom Seyoum, Joubert Banjop Kharlyngdoh, Berkay Paylar, Per‐Erik Olsson   +3 more
openalex   +1 more source

The Keystone‐Pathogen Hypothesis Updated: The Role of Porphyromonas gingivalis in Periodontitis

Journal of Periodontal Research, EarlyView.
Porphyromonas gingivalis orchestrates a coordinated manipulation of immune and inflammatory responses in periodontal tissues which leads to the generation of a dysbiotic, subgingival biofilm community, and progression of periodontitis. The type 9 secretion system, lipid A modification, and the formation of outer membrane vesicles are important ...
Mike A. Curtis, James A. Garnett, Richard P. Darveau   +2 more
wiley   +1 more source