The diversity of mating systems among animals is astounding. Importantly, similar mating systems have evolved even across distantly related taxa. However, our understanding of the mechanisms underlying these convergently evolved phenotypes is limited. Here, we examine on a genomic scale the neuromolecular basis of social organization in cichlids of the tribe Ectodini from Lake Tanganyika. Using field-collected males and females of four closely related species representing two independent evolutionary transitions from polygyny to monogamy, we take a comparative transcriptomic approach to test the hypothesis that these independent transitions have recruited similar gene sets. Our results demonstrate that while lineage and species exert a strong influence on neural gene expression profiles, social phenotype can also drive gene expression evolution. Specifically, 331 genes (∼6% of those assayed) were associated with monogamous mating systems independent of species or sex. Among these genes, we find a strong bias (4:1 ratio) toward genes with increased expression in monogamous individuals. A highly conserved nonapeptide system known to be involved in the regulation of social behavior across animals was not associated with mating system in our analysis. Overall, our findings suggest deep molecular homologies underlying the convergent or parallel evolution of monogamy in different cichlid lineages of Ectodini.
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http://dx.doi.org/10.1139/gen-2017-0075 | DOI Listing |
Altern Ther Health Med
December 2024
Background: Telomere length has been identified as a marker for biological aging and stressful body states. Mind-body interventions for stress reduction such as meditation, yoga, and pranayama have been previously tested to evaluate their efficacy in restricting telomere shortening.
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Ann Intern Med
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The Genetics Institute and Genomics Center, Tel Aviv Sourasky Medical Center, and School of Medicine, Faculty of Medical and Health Sciences, Tel Aviv University, Tel Aviv, Israel (H.B.F.).
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Laboratory of Translational Oncology, Intercollegiate Faculty of Biotechnology of the University of Gdańsk and the Medical University of Gdańsk, Gdańsk, Poland., Poland.
Ovarian cancer (OC) presents a diagnostic challenge, often resulting in poor patient outcomes. Platelet RNA sequencing, which reflects the host's response to disease, shows promise for earlier OC detection. This study examines the impact of sex, age, platelet count and the training on cancer types other than OC on classification accuracy achieved in the previous platelet-alone training dataset.
View Article and Find Full Text PDFJ Gerontol A Biol Sci Med Sci
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View Article and Find Full Text PDFJ Anim Sci
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College of Animal Science, Inner MongoliaAgricultural University, Hohhot, 010018, China.
The cashmere goat is a type of livestock primarily known for its cashmere. Cashmere has a soft hand feel and good luster. It is a vital raw material in the textile industry, possessing significant economic value.
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