Results 31 to 40 of about 17,678 (274)

Effects of different sampling intervals on apparent protein and energy digestibility of common feed ingredients by juvenile oscar fish (Astronotus ocellatus)=Diferentes intervalos de coleta na determinação da digestibilidade aparente da proteína e da energia de ingredientes comuns para o apaiari (Astronotus ocellatus) [PDF]

Acta Scientiarum: Animal Sciences, 2012
This study evaluated the apparent protein and energy digestibility of common feed ingredients (soybean meal, fish meal, wheat meal and corn) by juvenile oscars using two different sampling intervals (30 min. and 12h).
João Batista Kochenborger Fernandes, Nilva Kazue Sakomura, Laurindo André Rodrigues, Thiago El Hadi Perez Fabregat, Thiago Matias Torres do Nascimento   +4 more
doaj   +1 more source

Dynamics of sex chromosome evolution in a rapid radiation of cichlid fishes

bioRxiv, 2020
Sex is a fundamental trait that is determined, depending on the species, by different environmental and/or genetic factors, including various types of sex chromosomes.
Athimed El Taher, F. Ronco, Michael Matschiner, W. Salzburger, A. Böhne   +4 more
semanticscholar   +1 more source

The effect of experimental hybridization on cognition and brain anatomy: Limited phenotypic variation and transgression in Poeciliidae

Evolution, Volume 76, Issue 12, Page 2864-2878, December 2022., 2022
Abstract Hybridization can promote phenotypic variation and often produces trait combinations distinct from the parental species. This increase in available variation can lead to the manifestation of functional novelty when new phenotypes bear adaptive value under the environmental conditions in which they occur. Although the role of hybridization as a
Catarina Vila‐Pouca, Hannah De Waele, Alexander Kotrschal   +2 more
wiley   +1 more source

Reduced genetic diversity and the success of the invasive peacock bass (Cichliformes: Cichlidae)

Brazilian Journal of Biology, 2021
Several species of Cichla successfully colonized lakes and reservoirs of Brazil, since the 1960’s, causing serious damage to local wildlife. In this study, 135 peacock bass were collected in a reservoir complex in order to identify if they represented a ...
S. C. S. Luz, M. A. Montes, R. S. Farias, R. V. Lima, R. A. Torres, E. J. G. Ferreira, W. Severi, M. R. M. Coimbra   +7 more
doaj   +1 more source

Ancient hybridization fuels rapid cichlid fish adaptive radiations

Nature Communications, 2017
Understanding why some evolutionary lineages generate exceptionally high species diversity is an important goal in evolutionary biology. Haplochromine cichlid fishes of Africa’s Lake Victoria region encompass >700 diverse species that all evolved in the ...
J. Meier, D. Marques, S. Mwaiko, C. Wagner, L. Excoffier, O. Seehausen   +5 more
semanticscholar   +1 more source

The opsin genes of amazonian cichlids [PDF]

Molecular Ecology, 2017
AbstractVision is a critical sense for organismal survival with visual sensitivities strongly shaped by the environment. Some freshwater fishes with a Gondwanan origin are distributed in both South American rivers including the Amazon and African rivers and lakes. These different habitats likely required adaptations to murky and clear environments.
Escobar-Camacho, Daniel, Ramos, Erica, Martins, Cesar, Carleton, Karen L.   +3 more
openaire   +4 more sources

Growth, mortality and yield of Sarotherodon melanotheron melanotheron (Rüppell, 1852) in the Lake Nokoué and Porto-Novo Lagoon complex Benin, West Africa

Aquatic Living Resources, 2020
The study evaluated some population parameters of Sarotherodon melanotheron melanotheron within a lagoon complex in southern Benin: Lake Nokoué and Porto-Novo Lagoon.
Lederoun Djiman, Amoussou Gildas, Baglo Imaculé S., Adjibogoun Hermann, Vodougnon Hamil, Moreau Jacques, Lalèyè Philippe A.   +6 more
doaj   +1 more source

Subordinate Fish Mediate Aggressiveness Using Recent Contest Information

Frontiers in Ecology and Evolution, 2021
Memorizing dominance relationships can help animals avoid unwinnable subsequent contests. However, when competitive ability changes over time—for example, as a function of condition—it may be adaptive to “forget” these dominance relationships and for ...
Takashi Hotta, Takashi Hotta, Satoshi Awata, Lyndon A. Jordan, Lyndon A. Jordan, Masanori Kohda   +5 more
doaj   +1 more source

Cytoarchitecture of a Cichlid Fish Telencephalon [PDF]

Brain, Behavior and Evolution, 2009
Although the telencephalon of ray-finned fishes has garnered considerable attention from comparative neuroanatomists, detailed descriptions of telencephalic organization are available for only a few species. This necessarily limits our understanding of telencephalic evolution, particularly in light of the extraordinary diversity of ray-finned fishes ...
Russell D. Fernald, Rashmi G. Munshi, Sabrina S. Burmeister   +2 more
openaire   +2 more sources

Ancestral Hybridization Facilitated Species Diversification in the Lake Malawi Cichlid Fish Adaptive Radiation

bioRxiv, 2019
The adaptive radiation of cichlid fishes in East Afrian Lake Malawi encompasses over 500 species that are believed to have evolved within the last 800 thousand years from a common founder population.
H. Svardal, Fu Xiang Quah, M. Malinsky, B. Ngatunga, E. Miska, W. Salzburger, M. Genner, G. Turner, R. Durbin   +8 more
semanticscholar   +1 more source