caa a22 4500 445296135 CHVBK 20180317142542.0 cr unu---uuuuu 170323e20101201xx s 000 0 eng 10.1134/S003294521010005X doi (NATIONALLICENCE)springer-10.1134/S003294521010005X Genetic and environmental variations in quantitative characters in fishes: a comparative analysis of monoclonal triploid and bisexual tetraploid spined loaches ( Cobitis , Cobitidae) [Elektronische Daten] [E. Vasil'eva, V. Vasil'ev] The heritability estimates of 25 external morphometric characters and 23 craniometric indices are obtained by use of variances in monoclonal all-female triploids and bisexual tetraploids of spined loaches (genus Cobitis, Cobitidae) collected from the same breeding biotope. Most of studied traits demonstrate low heritability confirming previous conclusion on the similarity between external morphometric characters and craniological indices in relative effects of genetic and environmental components in their total phenotypic variation. Low heritability estimates in most of external morphological traits correspond to their low diagnostic value in Cobitis species. As a whole, in spite of certain deviations, studies on clonal forms do not refute the concept on higher heritability estimates in diagnostically significant traits in comparison with traits without diagnostic values in the same taxonomic group. Low heritability in most morphometric traits more probably is resulted from their low additive genetic variation caused by strong selection of evolutionary developed specific body shape in spined loaches, because strong selection should reduce the genetic variance in body proportions to minimal size. Sex differences observed in heritability estimates should be interpreted as a result of linkage of several additive genes controlling these traits to sex chromosomes. A few characters demonstrating high heritability estimates up to 0.492-0.580 are of great interest for taxonomic and phylogenetic studies in genus Cobitis and related taxa. Pleiades Publishing, Ltd., 2010 heritability nationallicence morphometric characters nationallicence craniological indices nationallicence unisexual forms nationallicence Vasil'eva E. Zoological Museum, Moscow State University, Bol'shaya Nikitskaya 6, 125009, Moscow, Russia aut Vasil'ev V. Severtsov Institute of Ecology and Evolution, Russian Academy of Sciences, Leninskii prospect 33, 119071, Moscow, Russia aut Journal of Ichthyology SP MAIK Nauka/Interperiodica 50/10(2010-12-01), 960-968 0032-9452 50:10<960 2010 50 11489 https://doi.org/10.1134/S003294521010005X text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1134/S003294521010005X text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Vasil'eva E. Zoological Museum, Moscow State University, Bol'shaya Nikitskaya 6, 125009, Moscow, Russia aut NATIONALLICENCE 700 1- Vasil'ev V. Severtsov Institute of Ecology and Evolution, Russian Academy of Sciences, Leninskii prospect 33, 119071, Moscow, Russia aut NATIONALLICENCE 773 0- Journal of Ichthyology SP MAIK Nauka/Interperiodica 50/10(2010-12-01), 960-968 0032-9452 50:10<960 2010 50 11489 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer