Results 141 to 150 of about 38,723 (312)

Testing the performance of environmental DNA metabarcoding for surveying highly diverse tropical fish communities: A case study from Lake Tanganyika

open access: yesEnvironmental DNA, 2020
Background and Aims Environmental DNA (eDNA) metabarcoding provides a highly sensitive method of surveying freshwater fish communities, although studies to date have largely been restricted to temperate ecosystems.
Christopher J. Doble   +6 more
doaj   +1 more source

Brain Transcriptomics Reveals Molecular Mechanisms of Cave Adaptation in Triplophysa Loaches

open access: yesEcology and Evolution, Volume 15, Issue 12, December 2025.
This study compares brain transcriptomes of cave (Triplophysa shilinensis) and surface‐dwelling (T. xiangshuingensis) loaches to uncover molecular adaptations to subterranean life. We identified widespread gene down‐regulation in the cave ecotype, with enriched pathways in energy metabolism, circadian rhythms, sensory perception, and body coloration ...
Chunqing Li   +4 more
wiley   +1 more source

An introgressed wing pattern acts as a mating cue. [PDF]

open access: yes, 2015
Heliconius butterflies provide good examples of both homoploid hybrid speciation and ecological speciation. In particular, examples of adaptive introgression have been detected among the subspecies of Heliconius timareta, which acquired red color pattern
Enciso-Romero, Juan   +6 more
core   +2 more sources

Evolutionary divergence of novel open reading frames in cichlids speciation

open access: yesScientific Reports, 2020
Novel open reading frames (nORFs) with coding potential may arise from noncoding DNA. Not much is known about their emergence, functional role, fixation in a population or contribution to adaptive radiation.
Shraddha Puntambekar   +9 more
doaj   +1 more source

Molecular mechanisms underlying nuchal hump formation in dolphin cichlid, Cyrtocara moorii

open access: yesScientific Reports, 2019
East African cichlid fishes represent a model to tackle adaptive changes and their connection to rapid speciation and ecological distinction. In comparison to bony craniofacial tissues, adaptive morphogenesis of soft tissues has been rarely addressed ...
L. A. Lecaudey   +3 more
semanticscholar   +1 more source

Consistent and flexible maternal effects: how the environments of a mother influence the offspring phenotype

open access: yesBiological Reviews, Volume 100, Issue 6, Page 2641-2659, December 2025.
ABSTRACT The environment experienced by a mother influences offspring phenotype through maternal effects, which can have significant adaptive benefits for both the mother and the offspring. However, the ways in which maternal environments influence offspring development are extremely diverse, and empirical studies using an outcome‐based approach often ...
Sin‐Yeon Kim, Judith Morales
wiley   +1 more source

Protein and amino acid requirements of warm-water fishes: a tool to efficient and low-cost fish feed production in Nigeria [PDF]

open access: yes, 1993
Numerous investigations have utilized various semi-purified and purified diets to estimate the protein and amino acid requirements of several temperate fishes. The vast literature on the protein and amino acid requirements of fishes has continued to omit
Balogun, A.M.   +2 more
core  

Lessons from a natural experiment: Allopatric morphological divergence and sympatric diversification in the Midas cichlid species complex are largely influenced by ecology in a deterministic way

open access: yesEvolution Letters, 2018
Explaining why some lineages diversify while others do not and how are key objectives in evolutionary biology. Young radiations of closely related species derived from the same source population provide an excellent opportunity to disentangle the ...
Andreas F. Kautt   +2 more
semanticscholar   +1 more source

Non‐breeding social behaviour as an investment in reducing future territoriality costs

open access: yesBiological Reviews, Volume 100, Issue 6, Page 2726-2737, December 2025.
ABSTRACT Territoriality is costly, and animals should adopt strategies to cope with these costs. Seasonal territoriality for breeding – a common strategy in many groups of animals – can reduce costs during the non‐breeding season but requires establishing new territories every breeding season.
Samuele Ramellini   +3 more
wiley   +1 more source

Computer simulations on the sympatric speciation modes for the Midas cichlid species complex [PDF]

open access: yes, 2007
Cichlid fishes are one of the best model system for the study of evolution of the species. Inspired by them, in this paper we simulated the splitting of a single species into two separate ones via random mutations, with both populations living together ...
Jorge de Sá   +2 more
core   +2 more sources

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