Results 41 to 50 of about 8,378 (227)
Tit for Tat in the Dear Enemy Relationship Between Territorial Females of a Cichlid Fish
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
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Tempo and mode of diversification of Lake Tanganyika cichlid fishes [PDF]
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
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Analysis of the meiotic segregation in intergeneric hybrids of tilapias [PDF]
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
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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
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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
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Social deprivation affects cooperative predator inspection in a cichlid fish [PDF]
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
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The Midas cichlid species complex: incipient sympatric speciation in Nicaraguan cichlid fishes? [PDF]
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
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
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We recorded the metazoan parasite communities in three endemic cichlids (Chiapaheros grammodes, Vieja breidohri and V. hartwegi) collected between November 2008 and July 2009 in the upper Grijalva River Basin (GRB), Chiapas, Mexico.
Paredes-Trujillo A. +3 more
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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
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