Results 1 to 10 of about 185 (99)
In search of new brain biomarkers of stress [PDF]
Research Results in Pharmacology, 2021 The aim: of the study was to investigate the level of ghrelin in various brain structures during a stress response in Zebrafish to a predator, to evaluate this indicator as a potential biomarker of stress, and the effect of a benzodiazepine tranquilizer (
Petr D. Shabanov +4 more
doaj +7 more sources
Morphology and efficiency of a specialized foraging behavior, sediment sifting, in neotropical cichlid fishes. [PDF]
PLoS ONE, 2014 Understanding of relationships between morphology and ecological performance can help to reveal how natural selection drives biological diversification.
Hernán López-Fernández +5 more
doaj +2 more sources
Similarities in biological processes can be used to bridge ecology and molecular biology. [PDF]
Evol Appl, 2020 Abstract Much of the research in biology aims to understand the origin of diversity. Naturally, ecological diversity was the first object of study, but we now have the necessary tools to probe diversity at molecular scales. The inherent differences in how we study diversity at different scales caused the disciplines of biology to be organized around ...
Hallin J +6 more
europepmc +2 more sources
Larval development of Hypsophrys nicaraguensis (Pisces: Cichlidae) under laboratory conditions
Revista de Biología Tropical, 2011 The cichlid Hypsophrys nicaraguensis is a popular fish known as butterfly, and despite its widespread use as pets, little is known about its reproductive biology.
Alex Molina Arias
doaj +7 more sources
Current Zoology, 2010 Olfactory cues that indicate predation risk elicit a number of defensive behaviors in fishes, but whether they are sufficient to also induce morphological defenses has received little attention. Cichlids are characterized by a high level of morphological
Maria E. ABATE, Andrew G. ENG, Les KAUFMAN
doaj +3 more sources
Ecological and evolutionary consequences of selective interspecific information use [PDF]
Ecology Letters, Volume 26, Issue 4, Page 490-503, April 2023., 2023 Recent work has shown that animals frequently use social information from individuals of their own species as well as of other species, yet the consequences of social information use remain poorly understood. Furthermore, information users may be selective in their social information use, deciding from whom and how to use information, but this has been
Reetta Hämäläinen +5 more
wiley +4 more sources
Habitat light sets the boundaries for the rapid evolution of cichlid fish vision, while sexual selection can tune it within those limits [PDF]
Molecular Ecology, Volume 29, Issue 8, Page 1476-1493, April 2020., 2020 Abstract Cichlid fishes' famous diversity in body coloration is accompanied by a highly diverse and complex visual system. Although cichlids possess an unusually high number of seven cone opsin genes, they express only a subset of these during their ontogeny, accounting for their astonishing interspecific variation in visual sensitivities. Much of this
Ralph F. Schneider +3 more
wiley +3 more sources
Molecular Ecology, Volume 30, Issue 8, Page 1880-1891, April 2021., 2021 Abstract The visual system of vertebrates has greatly contributed to our understanding of how different molecular mechanisms shape adaptive phenotypic diversity. Extensive work on African cichlid fishes has shown how variation in opsin gene expression mediates diversification as well as convergent evolution in colour vision.
Julián Torres‐Dowdall +3 more
wiley +1 more source
International Scholarly Research Notices, Volume 2011, Issue 1, 2011., 2011 Lowland streams of the Caribbean Costa Rican slope are naturally enriched by minerals and solutes such as phosphorus, a phenomenon known as geothermal input. The resulting stream phosphorus gradient affects the food web by altering primary production, leading to complex biotic and abiotic interactions.
Jimena Golcher Benavides +2 more
wiley +1 more source
The macroparasite fauna of cichlid fish from Nicaraguan lakes, a model system for understanding host-parasite diversification and speciation. [PDF]
Sci Rep, 2022 Santacruz A +2 more
europepmc +1 more source