Results 21 to 30 of about 687 (86)

ZW and XY Sex Chromosomes Drive Rapid and Distinctive Evolution of Sex‐Biased Gene Expression

Molecular Ecology, EarlyView.
ABSTRACT Cichlids are a textbook model system of adaptive radiation and a fascinating example of rapid sex chromosome evolution. Yet in these fish, as in most other taxa, the mechanisms causing sex chromosome turnover and the subsequent impact thereof are unknown.
Kevin Hsiung, Sophie Helen Smith, Astrid Böhne   +2 more
wiley   +1 more source

Assessment of Fish Biodiversity in Oni River, Ogun State, Nigeria [PDF]

International Journal of Agricultural Management and Development, 2011
For the purpose of sustainable exploitation of the fishery resourcesof Oni River, Ogun State, Nigeria, the fish biodiversity assessment was carried out. This was conducted by enumerating and identifying fish species composition, measuring the fish length,
Obe Bernardine Wuraola, Jenyo-Oni Adetola   +1 more
doaj  

The Early Development of the Blue‐Eye Cichlid, Cryptoheros spilurus (Cichliformes: Cichlidae)

Evolution &Development, Volume 27, Issue 4, December 2025.
We document the early development of Cryptoheros spilurus, highlighting rapid cranial differentiation, sensory organ formation, and fin development. Ontogenetic allometry and ultrastructural traits reveal functional adaptations for early foraging and locomotion, offering insights into ecological success and the developmental basis of cichlid ...
Rubén Alonso Contreras‐Tapia, Jairo Arroyave, Gabriela Garza‐Mouriño, María Elena Castellanos‐Páez, Marcela Ivonne Benítez‐Díaz Mirón, Wilfredo A. Matamoros   +5 more
wiley   +1 more source

Trace metal distribution in tissues of cichlids (Oreochromis niloticus and O. mossambicus) collected from wastewater-fed fishponds in East Calcutta Wetlands, a Ramsar site [PDF]

Acta Ichthyologica et Piscatoria, 2006
Background. Metals discharged in wastes from different industries into wetland ecosystems pose a serious threat to the receiving environment. Biotic components grown in the area amass such metals within their body through nutritional uptake and ...
S. Chatterjee, B. Chattopadhyay, S.K. Mukhopadhyay   +2 more
doaj   +3 more sources

Parasites Are Paramount: Vertical Trophic Positions of Parasitic Catfishes in a Tropical River Food Web

Ecology of Freshwater Fish, Volume 34, Issue 4, October 2025.
ABSTRACT The Neotropical catfish family Trichomycteridae contains parasitic fishes that include scale and mucus feeders (subfamily Stegophilinae) and blood feeders (i.e., ‘candirus’, subfamily Vandelliinae). The influence of parasitic catfishes on food web dynamics is unknown.
Carmen G. Montaña, Chase Nimee, Sophie Scott, Megan Beeksma, Kendall Hasting, Takiya Jackson, Leslie Kelso‐Winemiller, Kirk O. Winemiller   +7 more
wiley   +1 more source

Feeding and trophic ecomorphology of Satanoperca pappaterra (Pisces, Cichlidae) in the Manso Reservoir, Mato Grosso State, Brazil

Brazilian Archives of Biology and Technology, 2005
The aim of this work was to evaluate the relationship between diet and features of the trophic ecomorphology of Satanoperca pappaterra (Heckel, 1840) in an impacted environment.
Norma Segatti Hahn, Fabiane Cunha
doaj   +1 more source

Larger Fish Have Larger Brains With More Neurons Across but Not Within Cohorts Raised in Different Growth Conditions

Journal of Comparative Neurology, Volume 533, Issue 9, September 2025.
Teles et al. propose a model of brain evolution that explains how come fish with larger bodies have larger brains with more neurons across cohorts raised in different growth conditions, while individuals within a cohort do not, mimicking the different findings across and within species, respectively.
Magda C. Teles, Gonçalo M. Melo, Suzana Herculano‐Houzel, Rui F. Oliveira   +3 more
wiley   +1 more source

DNA methylation in fish of the cichlid family: A systematic review

Heliyon
Cichlidae is considered one of the most diverse families of freshwater fish in the world. The representatives of this group are known for their ecological and behavioral diversity.
Elias Welengane, Luan Felipe da Silva Frade, Luana Beatriz Sales Pinon, Carlos Eduardo Vasconcelos dos Santos, Adauto Lima Cardoso, Luís Adriano Santos do Nascimento, Renata Coelho Rodrigues Noronha   +6 more
doaj   +1 more source

Environmental DNA Reveals the Fish Community Structure Exhibited Instability and Trend of Miniaturization in the Xijiang River Basin of the Guizhou

Ecology and Evolution, Volume 15, Issue 9, September 2025.
Monitoring of fish communities is of great significance for the management and sustainability of river ecosystems. Environmental DNA (eDNA) metabarcoding technology has been demonstrated to be a highly sensitive biomonitoring tool. Nevertheless, it has seldom been tested in mountainous rivers within the geographically complex Karst region.
Xiuhui Ma, Fujiang Huang, Ruiyuan Zhang, Tianhong Liu, Tianyang Zhang, Peng Zeng   +5 more
wiley   +1 more source

Notes on the occurrence of Trypanosoma sp. (Kinetoplastida: Trypanosomatidae) in freshwater fishes from South Africa

Onderstepoort Journal of Veterinary Research, 2013
A total of 257 fishes from four families, Clariidae, Cichlidae, Cyprinidae and Schilbeidae were collected from three localities: the Sand River Dam, Swaziland; the Nylsvlei Nature Reserve, South Africa and the Vaal Dam and Vaal River Barrage, South ...
Maryke L. Ferreira, Annemariè Avenant-Oldewage   +1 more
doaj   +1 more source