Cryptical nature of morphometric variation in diploid-poliploid spined loach network (Cypriniformes, Cobitidae, Cobitis) of the Lower Danube
Main Article Content
Abstract
Introduction. The paper devoted to morphometric variation investigation of spined loaches network from Lower Danube consisting of two parental species (C. elongatoides, C. tanaitica) and three hybrid biotypes (C. 2 elongatoides -- C. tanaitica, C. elongatoides -- 2 tanaitica, C. elongatoides -- tanaitica) which identified by the allozymes
Purpose. The purpose of the work was to verify the significance of the factor of geographic variability in determining the affiliation to different species and biotypes by means of morphometric indices.
Methods. It was used standard morphometry of the body form and size by means by 23 measurements and 26 indexes, multidimensional statistics (method of the main components) and unidimensional statistics.
Results. The obtained results prove that only 55% of females can correctly identify by means of the body measurements, while only 28% by the indexes. Despite the significant difference between most single characters, nonetheless, their application to distinguish between species and biotypes causes considerable difficulties, since in all cases of pairwise comparisons there are significant transgressions.
Conclusion. The use of individual measurements or body indices, or their complex, does not make it possible to distinguish between species and biotypes even within the same group. This means that the geographic factor, if it alters the morphological differences of species, but its effect in this case is very small and can be neglected.
Article Details
Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
AGREEMENT ABOUT TRANSMISSION OF COPYRIGHT
I, the author of the article / We, the authors of the manuscript _______________________________________________________________________
in case of its acceptance for publication, we transfer the following rights to the founders and editorial boards of the scientific publication "Cherkasy University Bulletin: Biological Sciences Series":
1. Publication of this article in Ukrainian (English) and distribution of its printed version.
2. Dissemination of the electronic version of the article through any electronic means (placing on the official journal web site, in electronic databases, repositories, etc.). At the same time we reserve the right without consent of the editorial board and the founders:
1. Use the materials of the article in whole or in part for educational purposes.
2. To use the materials of the article in whole or in part for writing your own theses.
3. Use article materials to prepare Summarys, conference reports, and oral presentations.
4. Post electronic copies of the article (including the final electronic version downloaded from the journal's official website) to:
a. personal web-pecypcax of all authors (web sites, web pages, blogs, etc.);
b. web-pecypcax of the institutions where the authors work (including electronic institutional repositories);
with. non-profit, open-source web-pecypcax (such as arXiv.org).
With this agreement, we also certify that the submitted manuscript meets the following criteria:
1. Does not contain calls for violence, incitement of racial or ethnic enmity, which are disturbing, threatening, shameful, libelous, cruel, indecent, vulgar, etc.
2. Does not infringe the copyrights and intellectual property rights of others or organizations; contains all the references to the cited authors and / or publications envisaged by applicable copyright law, as well as the results and facts used in the article by other authors or organizations.
3. It has not been previously published in other publishers and has not been published in other publications.
4. Does not include materials that are not subject to publication in the open press, in accordance with applicable law.
____________________ ___________________
First name, Last name, signature of the author
"___" __________ 20__
References
Mezhzherin S.V., Garbar A.V., Vlasenko R.P., Onishchuk S.P., Kotsyuba I.Yu., Zhalay E.I. (2018) Evolutionary paradox of parthenogenetic earthworms. Kiev: Naukova dumka, 232. (in Rus.).
Vasilyev V.P. (1985). Evolutionary caryology of fish. Moskow: Nauka. 299. (in Rus.).
Mezhzherin S.V., Pavlenko L.I. (2009). The spined loaches (Cypriniformes: Cobitidae: Cobitis) of Ukraine basins: genetical borders of species and natural hybridization. Naukoviy visnyk Uzhgorod [Univ Scientific herald of Uzhgorod University.], Ser. biol. 25. 146-154 (in Rus.).
Mezhzherin S.V., Pavlenko L.I. (2010) Genetic diversity, origin and distribution tendencies of polyploidy spined loaches (Cypriniformes, Cobitidae, Cobitis) within Ukraine. Tsitologia i genetica. 44 (5), 65-77 (in Rus.).
Kotusz J. (2000). Intra- and interpopulation morphological variability in diploid and varied-ploidy Cobitis from Poland. Folia Zoologica, 49 (1), 219–226.
Kotusz J. (2008) Morphological relationships between polyploidy hybrid spined loaches of the genus Cobitis (Teleostei: Cobitidae and their parental species. Ann. Zool. 58 (4). 891-905.
Mezhzherin S.V., Pavlenko L.I. (2007) Genetic structure odf diploid-polyploid spined loaches complex Сobitis (Cypriniformes, Cobitidae) of theLower Danube. Tsitologia і genetic [Cytology and Genetics]. 41 (1). 56-65. (in Rus.).
Pravdin I.F. (1966) Guide to the study of fish (mostly freshwater). Forth ed. Мoscow: Pishchevaya promyshlennost, 374 p. (in Rus.).
Mitteroecker P., Bookstein F. (2011) Linear discrimination, ordination, and the visualization of selection gradients in modern morphometrics. Evol. Biol. 38. 100-114.
Team R. C. (2017) R: A language and environment for statistical computing. R Foundation for Statistical Computing, Vienna, Austria. URL https://www.R-project.org/.
Schlager S. (2017) Morpho and Rvcg – Shape Analysis in R. In Zheng G., Li S. and Szekely G. (eds.), Statistical Shape and Deformation Analysis,. pp. 217-256. (Academic Press)
Mayr E. Animal species and evolution. Belknap Press Harvard Univ. Camvridge, Massachusets. 1966. 456 p.