Results 81 to 90 of about 17,994 (219)

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

Distribution and abundance of cichlids in the New Calabar River, Nigeria

Journal of Fisheries, 2018
This study was conducted to study the distribution, abundance and diversity of the cichlids in the New Calabar River, Nigeria. A total of 1073 cichlids belonging to ten species and seven genera (Coptodon guineensis, C. zillii, C.
Olaniyi Alaba Olopade, Henry Eyina Dienye   +1 more
doaj   +3 more sources

Game over: Conflict resolution through strategic growth in an invertebrate

Functional Ecology, Volume 40, Issue 1, Page 36-50, January 2026.
Read the free Plain Language Summary for this article on the Journal blog. Abstract In some multimember groups with unequal partitioning of reproduction and poor breeding opportunities outside the group, natural selection has favoured the evolution of adaptive mechanisms such as strategic growth modulation.
Pooja Radhakrishnan, Noé Saboul, Raquel Monclús, Sergi Taboada, Maria Cristina Lorenzi   +4 more
wiley   +1 more source

Transcriptomics of morphological color change in polychromatic Midas cichlids

BMC Genomics, 2013
BackgroundAnimal pigmentation has received much attention in evolutionary biology research due to its strong implications for adaptation and speciation.
F. Henning, Julia C Jones, P. Franchini, A. Meyer   +3 more
semanticscholar   +1 more source

The Coevolution of Colour Patterns and Hindwing Shapes on a Large Phylogenetic Scale Reveals Predation‐Driven Adaptive Syndromes in Swallowtail Butterflies

Ecology Letters, Volume 29, Issue 1, January 2026.
By combining computer vision and morphometrics on museum specimens, we show that hindwing tail shape and colour patterns evolved in concert across swallowtails. Long‐tailed species display contrasted stripes and marginal spots, suggesting coevolution of deflective traits promoted by natural selection by predators.
Agathe Puissant, Ariane Chotard, Fabien L. Condamine, Vincent Debat, Violaine Llaurens   +4 more
wiley   +1 more source

Fine‐Scale Bioregionalization in a Complex Island System: A Freshwater Perspective From the Greater Antilles

Journal of Biogeography, Volume 53, Issue 1, January 2026.
ABSTRACT Aim The isolated nature of islands makes them particularly vulnerable to climate change. The freshwater fishes of the Greater Antilles remain understudied and are further threatened by habitat fragmentation and the introduction of exotic invasive species.
Sheila Rodríguez‐Machado, Diego J. Elías, Patricia Torres‐Pineda, Daniel Fromm, Prosanta Chakrabarty   +4 more
wiley   +1 more source

Reproductive- and Social-State Plasticity of Multiple Sensory Systems in a Cichlid Fish [PDF]

, 2021
Karen P. Maruska, Julie M. Butler
openalex   +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

Reproductive ecology of a neotropical cichlid fish, Cichla monoculus (Osteichthyes: Cichlidae)

Brazilian Journal of Biology
The reproductive ecology of the freshwater fish Cichla monoculus Spix, 1831 (Osteichthyes: Cichlidae) was investigated in the Campo Grande Reservoir, Northeast Brazil.
S. Chellappa, M. R. Câmara, N. T. Chellappa, M. C. M. Beveridge, F. A. Huntingford   +4 more
doaj   +1 more source

Pigments, Chromatophore Structure, and Gene Expression Underlying Colour Polytypy of a Panamanian Poison Frog

Molecular Ecology, Volume 35, Issue 1, January 2026.
ABSTRACT Colour polytypism represents an example of phenotypic diversification shaped by genetic divergence and ecological pressures. Poison frogs of the genus Oophaga (Dendrobatidae) are highly polytypic in coloration, making them an ideal system for investigating the genetic and physiological basis of colour variation.
Vasiliki Mantzana‐Oikonomaki, Giselle Tamayo‐Castillo, Víctor Vásquez‐Cháves, Abel Mora‐Machado, William J. Zamora Ramirez, Roberto Ibáñez, Heike Pröhl, Ariel Rodríguez   +7 more
wiley   +1 more source