{"title":"Thyroid hormone signaling in the evolution of pigment patterns in cichlids: results and research prospects","authors":"Denis V. Prazdnikov","doi":"10.1007/s10750-024-05640-0","DOIUrl":null,"url":null,"abstract":"<p>Cichlids exhibit an outstanding diversity of pigment patterns among both teleosts and vertebrates in general. The role of endocrine regulatory mechanisms underlying the observed diversity of patterns remains poorly understood. Thyroid hormones are important signaling molecules that regulate a wide range of developmental processes in teleosts. Here, I review evidence for the influence of thyroid signaling on pigment pattern formation in Neotropical cichlids, and the role of hormone-mediated phenotypic plasticity and heterochrony in the evolution of cichlid pattern. The use of hormones as key factors in switching developmental programs in future studies will provide a better understanding of how environmentally-mediated changes in the endocrine regulation of ontogeny contribute to adaptive evolution and the phenotypic divergence of cichlids.</p>","PeriodicalId":13147,"journal":{"name":"Hydrobiologia","volume":"7 1","pages":""},"PeriodicalIF":2.2000,"publicationDate":"2024-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Hydrobiologia","FirstCategoryId":"99","ListUrlMain":"https://doi.org/10.1007/s10750-024-05640-0","RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"MARINE & FRESHWATER BIOLOGY","Score":null,"Total":0}
引用次数: 0
Abstract
Cichlids exhibit an outstanding diversity of pigment patterns among both teleosts and vertebrates in general. The role of endocrine regulatory mechanisms underlying the observed diversity of patterns remains poorly understood. Thyroid hormones are important signaling molecules that regulate a wide range of developmental processes in teleosts. Here, I review evidence for the influence of thyroid signaling on pigment pattern formation in Neotropical cichlids, and the role of hormone-mediated phenotypic plasticity and heterochrony in the evolution of cichlid pattern. The use of hormones as key factors in switching developmental programs in future studies will provide a better understanding of how environmentally-mediated changes in the endocrine regulation of ontogeny contribute to adaptive evolution and the phenotypic divergence of cichlids.
期刊介绍：
Hydrobiologia publishes original research, reviews and opinions regarding the biology of all aquatic environments, including the impact of human activities. We welcome molecular-, organism-, community- and ecosystem-level studies in contributions dealing with limnology and oceanography, including systematics and aquatic ecology. Hypothesis-driven experimental research is preferred, but also theoretical papers or articles with large descriptive content will be considered, provided they are made relevant to a broad hydrobiological audience. Applied aspects will be considered if firmly embedded in an ecological context.
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