{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2022,3,30]],"date-time":"2022-03-30T16:49:57Z","timestamp":1648658997416},"reference-count":26,"publisher":"FapUNIFESP (SciELO)","issue":"4","license":[{"start":{"date-parts":[[2017,11,1]],"date-time":"2017-11-01T00:00:00Z","timestamp":1509494400000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"},{"start":{"date-parts":[[2017,11,1]],"date-time":"2017-11-01T00:00:00Z","timestamp":1509494400000},"content-version":"am","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"},{"start":{"date-parts":[[2017,11,1]],"date-time":"2017-11-01T00:00:00Z","timestamp":1509494400000},"content-version":"tdm","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Braz. J. Biol."],"abstract":"<jats:p>Abstract Chromosome stoichiometry, a form of genetic plasticity, specifically refers to variation in the standard diploid genomic composition of an individual or species. In the present work, freshwater planarians (Girardia schubarti) were analyzed to recognize variations in chromosomal stoichiometry especially of complete ploidal change between specimens, within specimens and between cells within specimens and any relations they might have with selected components of phenotypic plasticity. Homoploid polyploids for the group reached rational scalar multiples (e.g. tetraploids) or irrational scalar multiples (e.g. triploids). Karyotypic mosaics emerged where individual cells presented polyploid multiples in arithmetic and geometric progressions. Ploidal multiplicity, a chromosomal component of stochastic noise, had positive phenotypic effects (increased dimensions) on morphologic criteria of body length, body width and dorsal surface reflecting a significant genotypic plasticity (GP) and robust phenotypic plasticity (PP). Variable but significant association of genotypic plasticity with robust phenotypic variance suggests kinetics of phenotypic homeostasis that is species-specific permitting phenotypic adaptability to environmental variables by means of GP. That association is diminished, deactivated or lost in more advanced and more complex organisms.<\/jats:p>","DOI":"10.1590\/1519-6984.20615","type":"journal-article","created":{"date-parts":[[2017,6,14]],"date-time":"2017-06-14T23:38:29Z","timestamp":1497483509000},"page":"745-751","source":"Crossref","is-referenced-by-count":1,"title":["Polyploidy as a chromosomal component of stochastic noise: variable scalar multiples of the diploid chromosome complement in the invertebrate species Girardia schubarti from Brazil"],"prefix":"10.1590","volume":"77","author":[{"given":"E. G. F.","family":"Benya","sequence":"first","affiliation":[{"name":"Universidade do Vale do Rio dos Sinos,  Brazil"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"A. M.","family":"Leal-Zanchet","sequence":"additional","affiliation":[{"name":"Universidade do Vale do Rio dos Sinos,  Brazil"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"J.","family":"Hauser","sequence":"additional","affiliation":[{"name":"Universidade do Vale do Rio dos Sinos,  Brazil"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"530","published-online":{"date-parts":[[2017,11]]},"reference":[{"issue":"9","key":"ref1","doi-asserted-by":"crossref","first-page":"937","DOI":"10.1038\/ng1616","article-title":"Contributions of low molecular number and chromosomal positioning to stochastic gene expression","volume":"37","author":"BECSKEI A.","year":"2005","journal-title":"Nature Genetics"},{"issue":"5","key":"ref2","doi-asserted-by":"crossref","first-page":"1719","DOI":"10.1105\/tpc.110.081281","article-title":"Two-phase resolution of polyploidy in the Arabidopsis metabolic network gives rise to relative and absolute dosage constraints","volume":"23","author":"BEKAERT M.","year":"2011","journal-title":"The Plant Cell"},{"issue":"4","key":"ref3","doi-asserted-by":"crossref","first-page":"951","DOI":"10.1590\/S1519-69842007000500021","article-title":"Chromsome polymorphism and complements in populations of Girardia species (Platyhelminths, Tricladida, Paludicola) from southern Brazil","volume":"67","author":"BENYA E.","year":"2007","journal-title":"Brazilian Journal of Biology = Revista Brasileira de Biologia"},{"issue":"1\/3","key":"ref4","doi-asserted-by":"crossref","first-page":"277","DOI":"10.1023\/A:1003460132521","article-title":"Reproductive modes of ploidy distribution, and supernumerary chromosome frequencies of the flatworm Polycelis nigra (Platyhelminthes: Tricladida)","volume":"383","author":"BEUKEBOOM L.W.","year":"1998","journal-title":"Hydrobiologia"},{"issue":"4","key":"ref5","doi-asserted-by":"crossref","first-page":"1176","DOI":"10.1073\/pnas.1112041109","article-title":"Extensive chromosomal variation in a recently formed natural allopolploid species, Tragopogon miscellus (Asteraceae)","volume":"109","author":"CHESTER M.","year":"2012","journal-title":"Proceedings of the National Academy of Sciences of the United States of America"},{"issue":"11","key":"ref6","doi-asserted-by":"crossref","first-page":"836","DOI":"10.1038\/nrg1711","article-title":"The advantages and disadvantages of being polyploidy","volume":"6","author":"COMAI L.","year":"2005","journal-title":"Nature Reviews. 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