Results 51 to 60 of about 7,447 (233)

Analysis of the meiotic segregation in intergeneric hybrids of tilapias [PDF]

open access: yes, 2012
Tilapia species exhibit a large ecological diversity and an important propensity to interspecific hybridisation. This has been shown in the wild and used in aquaculture.
Chevassus-Au-Louis, Bernard   +9 more
core   +1 more source

) in Midas cichlids [PDF]

open access: yes, 2022
The evolution of sex chromosomes and their differentiation from autosomes is a major event during genome evolution that happened many times in several lineages.
Claudius F. Kratochwil   +14 more
core   +1 more source

Tit for Tat in the Dear Enemy Relationship Between Territorial Females of a Cichlid Fish

open access: yesFrontiers in Ecology and Evolution, 2018
Many territorial animals reduce aggression toward their neighbors once territorial boundaries are established. This relationship is called the dear enemy phenomenon, hypothetically based on a conditional strategy like tit for tat (TFT).
Shumpei Sogawa, Masanori Kohda
doaj   +1 more source

Prevalence, intensity and abundance of endoparasites in Oreochromis niloticus and Tilapia zilli (Pisces: Cichlidae) from Asa Dam, Ilorin, Nigeria

open access: yesCuadernos de investigación UNED, 2015
Disease is an important factor in fisheries, affecting both wild and cultured species. Using standard parasitological techniques we determined the prevalence, mean intensity and abundance of endoparasites from 250 specimens of two cichlids, Oreochromis ...
C. Ebube Amaechi
doaj   +1 more source

Social deprivation affects cooperative predator inspection in a cichlid fish [PDF]

open access: yesRoyal Society Open Science, 2015
The social environment individuals are exposed to during ontogeny shapes social skills and social competence in group-living animals. Consequently, social deprivation has serious effects on behaviour and development in animals but little is known about ...
Saskia Hesse   +3 more
doaj   +1 more source

Sensory Drive in Cichlid Speciation [PDF]

open access: yesThe American Naturalist, 2006
The role of selection in speciation is a central yet poorly understood problem in evolutionary biology. The rapid radiations of extremely colorful cichlid fish in African lakes have fueled the hypothesis that sexual selection can drive species divergence without geographical isolation.
Martine E, Maan   +3 more
openaire   +2 more sources

Tempo and mode of diversification of Lake Tanganyika cichlid fishes [PDF]

open access: yes, 2008
Understanding the causes of disparities in species diversity across taxonomic groups and regions is a fundamental aim in evolutionary biology. Addressing these questions is difficult because of the need for densely sampled phylogenies and suitable ...
Barraclough, TG   +8 more
core   +1 more source

The Midas cichlid species complex: incipient sympatric speciation in Nicaraguan cichlid fishes? [PDF]

open access: yesMolecular Ecology, 2004
AbstractSympatric speciation is a contentious concept, although theoretical models as well as empirical evidence support its relevance in evolutionary biology. The Midas cichlid species complex (Amphilophus citrinellus,labiatus,zaliosus) from several crater lakes in Nicaragua fits several of the key characteristics of a sympatric speciation model.
Barluenga, Marta, Meyer, Axel
openaire   +3 more sources

Invasive cichlids (Teleostei: Cichliformes) in the Amacuzac River, Mexico: Implications for the behavioral ecology of the native Mexican mojarra Amphilophus istlanus

open access: yesWater Biology and Security, 2023
The introduction of species is a leading cause of biodiversity loss and habitat alteration. Several species have invaded Mexican freshwater ecosystems, adversely affecting native fishes.
M. Franco   +4 more
doaj   +1 more source

Feeding selectivity and growth of Nile tilapia (Oreochromis niloticus L.) fed on temperate-zone aquatic macrophytes

open access: yesCzech Journal of Animal Science, 2004
Feeding selectivity of Nile tilapia (Oreochromis niloticus L.) juveniles (9.3-20.9 g) to four aquatic macrophyte species and tilapia growth were studied in 4 consecutive experiments. Plant diet was provided to 8 tanks containing 20 fishes for 5 days. The
I. Šetlíková, Z. Adámek
doaj   +1 more source

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