Results 121 to 130 of about 38,723 (312)

Crater lake cichlids individually specialize along the benthic-limnetic axis [PDF]

, 2014
A common pattern of adaptive diversification in freshwater fishes is the repeated evolution of elongated open water (limnetic) species and high-bodied shore (benthic) species from generalist ancestors.
Barlow G. W., Dryden I. L., Fryer G., Hammer Ø., Hudson A. G., Keenleyside M. H. A., McCrary J. K., McKaye K. R., McPhail J. D., Mousseau T. A., Pritchard J. K., Recknagel H., Robinson B. W., Schluter D., Stauffer J. R.   +14 more
core   +2 more sources

Metabolic adjustments in Satanoperca aff. jurupari (Perciformes: Cichlidae)

Genetics and Molecular Biology, 2003
In this paper, we describe the enzyme levels and isozyme distribution in skeletal and heart muscle of Satanoperca aff. jurupari, (Cichlidae, subgroup Geophaginae). LDH and CS were measured in skeletal and heart muscle. Starch gel electrophoresis was used
Chippari-Gomes Adriana R., Leitão Marco Aurélio B., Paula-Silva Maria de Nazaré, Mesquita-Saad Lenise S. B. de, Almeida-Val Vera Maria F.   +4 more
doaj  

Food habits of three non-native cichlid fishes in the lowermost Chao Phraya River basin, Thailand

Journal of Freshwater Ecology, 2019
The food habits of three non-native cichlid fishes, Mayan cichlid (Mayaheros urophthalmus), Mozambique tilapia (Oreochromis mossambicus) and Nile tilapia (O. niloticus), in the lowermost Chao Phraya River basin, Thailand, was examined by stomach contents
Daiki Tomojiri, Prachya Musikasinthorn, Akihisa Iwata   +2 more
doaj   +1 more source

Nonapeptide cell size differs between male morphs of the West African cichlid, Pelvicachromis pulcher

Journal of Fish Biology, EarlyView.
Abstract Alternative male morphs are found in many species of fishes. These morphs often differ in suites of social behaviours, such as aggression and territoriality, associated with alternative reproductive tactics. Such consistent morph‐typical behavioural profiles suggest common differences in underlying neuroendocrine mechanisms.
Adam R. Reddon, Douglas R. Wylie, Peter L. Hurd   +2 more
wiley   +1 more source

Analysis of BAC end sequences of tilapia (Oreochromis niloticus) using in silico approaches (W046) [PDF]

, 2011
Tilapias are the second most important fish group in aquaculture and a primary source of animal protein for millions of people in developing countries. Over the past years a great effort has been done to increase the genomic tools in tilapia by obtaining
Baroiller, Jean-François, Conte, Matthew A., D'Cotta, Helena, Kocher, Thomas D., Mougenot, Isabelle, Soler, Clélia   +5 more
core  

The cognitive role of concept variability

Mind &Language, EarlyView.
I present and defend concept variability, the view that concepts can admit of indefinitely many variations and changes in their representational contents without thereby losing their identity. I argue that the variability of concepts is central to their role in enabling cognition, and thus that a concept's content variability is, despite philosophical ...
Alnica Visser
wiley   +1 more source

Toxicity of Commonly Used Plasticizers to the Freshwater Organisms Tilapia sparrmanii (Fish) and Caridina nilotica (Shrimp): Lethal and Sublethal Effects

Environmental Toxicology, Volume 41, Issue 1, Page 81-94, January 2026.
ABSTRACT The toxicity of microplastics in aquatic environments is usually due to plasticizers, the chemical additives that keep the plastic polymers together. Thus, the current study reports on the toxicity of three common plasticizers found in freshwater ecosystems and their impacts on two South African freshwater organisms at the organismal and ...
Paul Kojo Mensah, Neil John Griffin, Ntombekhaya Mgaba, Margaret Fafa Awushie Akwetey, Oghenekaro Nelson Odume   +4 more
wiley   +1 more source

Conservation and sustainable utilization of Nigerian ornamental fishes [PDF]

, 2005
The paper assessed qualitatively the threat status of nigerian freshwater fishes that are presently being exported and those that have potential in aquarium trade using such criteria as rarity, size at maturity, mode of reproduction, human population ...
Olaosebikan, B.D.
core  

MicroRNA gene regulation in extremely young and parallel adaptive radiations of crater lake cichlid fish.

Molecular biology and evolution, 2019
Cichlid fishes provide textbook examples of explosive phenotypic diversification and sympatric speciation, thereby making them ideal systems for studying the molecular mechanisms underlying rapid lineage divergence.
P. Franchini, Peiwen Xiong, Carmelo Fruciano, R. Schneider, J. Woltering, C. D. Hulsey, A. Meyer   +6 more
semanticscholar   +1 more source

Metabarcoding Reveals a Potentially Undescribed Columnaris‐Causing Bacterium in Peracute Skin Disease of Rainbow Trout (Oncorhynchus mykiss, Walbaum)

Journal of Fish Diseases, Volume 49, Issue 1, January 2026.
ABSTRACT Columnaris‐causing bacteria (CCB) represent a group of four Flavobacterium species, previously classified under Flavobacterium columnaris, causing a threatening condition in salmonid farming characterised by cutaneous and gill lesions, commonly referred to as ‘saddleback disease’. A peracute skin disease outbreak with high mortality in rainbow
Samuele Zamparo, Ginevra Brocca, Fabio Marroni, Slobodanka Radovic, Ciro Castellano, Diana Torge, Serena Bianchi, David Groman, Guido Macchiarelli, Luisa Vera Muscatello, Donatella Volpatti, Massimo Orioles   +11 more
wiley   +1 more source