More thyroid hormone changes cichlid color and pattern
نویسندگان
چکیده
With over 600 species and coming in all sizes, shapes, patterns colors, Neotropical cichlids of Central South America are popular pet fish. But most don't start out with bright bold colors contrasting across their bodies. So just how does a drab juvenile turn into vivid adult? Denis Prazdnikov Fedor Shkil the Severtsov Institute Ecology Evolution, Russia, think that they've discovered answer: thyroid hormone. This hormone has sorts effects, but people familiar its role controlling metabolic rate. More makes you have higher In fishes, it can also serve other functions throughout lives. One important is determining where when fish produces black blue colors.The researchers measured amount pigment convict (Amatitlania nigrofasciata) blue-eyed (Cryptoheros spilurus) during various stages development from embryos to adults. They there were two groups cells made color – one active very young, another they The team then gave some an extra boost different development. dose caused juveniles both cichlid develop spotted pattern rather than normal striped pattern. cases, this was replaced adults, if given too much late development, stuck for good. what would happen prevented working?The duo did that, blocking working same boost. cichlids, adults looked like younger never developing vibrant adult coloration keeping stripes. When blocked developed even more stripes usual. suggests responsible, at least part, remarkable array making underwater world stunning.
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ژورنال
عنوان ژورنال: The Journal of Experimental Biology
سال: 2023
ISSN: ['1477-9145', '0022-0949']
DOI: https://doi.org/10.1242/jeb.246356