Geometric Morphometric Tests for Phenotypic Divergence Between Chromosomal Races

Polly, P. David; Wójcik, Jan M.

doi:10.1017/9780511895531.011

Cited by 11 publications

(5 citation statements)

References 53 publications

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“…Nevertheless, a more likely interpretation may involve a similarity of morphogenetic pathways within a sibling species. Because both species constitute the "araneus" species group , the m1 similarity can be explained in the morphogenetic context (Jernvall, 1995;Polly, 2005;Rychlik et al, 2006: 348;Kavanagh et al, 2007;Polly and Mock, 2018;Polly and Wójcik, 2019).…”

Section: Size/shape and Morphospace Dynamicsmentioning

confidence: 99%

“…Hence, we lose a lot of information, despite the use of 3D data instead of 2D data. In the context of mammalian molar morphogenesis and its ecophenotypic component (Kavanagh et al, 2007;Polly and Mock, 2018;Polly and Wójcik, 2019), one can hypothesize an increase in resolving power of m1 shape with the increasing complexity of the landmark frame (e.g., Voyta et al, 2022a). A new landmark frame requires a transition to 3D datasets that involves proliferation of technical issues, including agerelated effects (see Voyta et al, 2023: 579), and a lot processing time expended.…”

Section: Resolving Power Of Tooth Shapementioning

confidence: 99%

“…Although shrews have special value, their morphometric study usually reaches either a single-species analysis (Panasenko and Kholin, 2011;Polly, 2005Polly, , 2007Voyta et al, 2013;Cornette et al, 2015a;Rofes et al, 2018) or an analysis of univariate/bivariate statistics (Fadeeva, 2016;Zazhigin and Voyta, 2018;Moya-Costa et al 2023). Currently, there are not many comprehensive studies on the morphometric variety of shrews on a multispecies scale (Butler et al, 1989;Zaitsev, 1998;Dokuchaev et al, 1999Dokuchaev et al, , 2010Zazhigin and Voyta, 2022), especially used powerful geometric morphometric approaches based on two-and three-dimensional data sets (Rychlik et al, 2006;Cornette et al, 2015aCornette et al, , 2015b, various methods of interpretation (e.g., multivariate shape space approach; Polly and Wójcik, 2019) and molecular/ morphological data sets combining , although, other mammalian groups are being developed very actively Viacava et al, 2023;and many others).…”

Section: Introductionmentioning

confidence: 99%

“…at Uralian fossil sites (Zaitsev, 1998), or Sorex mirabilis Ognev, 1937, at Russian Far Eastern sites (Omelko et al, 2020). According to studies by Polly (Polly, 2005(Polly, , 2007Rychlik et al, 2006;Polly and Wójcik, 2019) and Cornette (Cornette et al, 2013(Cornette et al, , 2015a, late Quaternary climatic changes should have influenced the composition of communities and the morphology of species, with marked cooling and warming fluctuations. It is widely accepted that the moderate environmental influence can determine changes in the overall size of shrews, usually in contradiction to Bergmann's rule, which means that cooling causes a size decrease, whereas warming a size increase (Carraway and Verts, 2005;Rychlik et al, 2006;Panasenko and Kholin, 2011;Omelko and Kholin, 2017), as assumed in accordance with consequences of a composition of the trophic niches (Churchfield, 1994;Hanski, 1994).…”

Section: Introductionmentioning

confidence: 99%

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Morphospace dynamics and intraspecies variety of Sorex araneus and S. tundrensis according to recent and fossil data

Voyta,

Izvarin,

Shemyakina

et al. 2023

Palaeontol Electron

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Several patterns were revealed in a temporal study on morphological variety of Sorex araneus and S. tundrensis (Soricidae, Mammalia). We examined samples from 18 modern and three fossil Early-Late Holocene Uralian localities. We analyzed shape variation of the first lower molar and hemimandible using two-dimensional geometrical landmarks; size differences were estimated by means of three linear measures. A separate purpose was estimation of the measurement error that arose during the data acquisition. We found that the modern samples of both species share underestimated similarity in both size and shape of morphological structures. Regression analysis revealed different phenotypic traits of the mandibular proportion in the large and small shrews regardless of species attribution. A size decrease of S. araneus and conversely a size increase of S. tundrensis both drive the mandibular shape toward phenotypic convergence. This pattern, however, is violated in the fossil samples, where the largest S. tundrensis from a Late Holocene Sim III locality (South Ural) showed a well-distinguishable mandibular shape located in a separate part of the morphospace. In this work, we found that the m1 shape has only weak resolving power as compared to the mandibular or especially skull shape. Nonetheless, even the moderate resolving power of the mandibular shape allowed us to uncover phenotypic changes during the Holocene that have not been noticed by previous researchers at Uralian late Quaternary localities.

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Section: Size/shape and Morphospace Dynamicsmentioning

confidence: 99%

Section: Resolving Power Of Tooth Shapementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Morphospace dynamics and intraspecies variety of Sorex araneus and S. tundrensis according to recent and fossil data

Voyta,

Izvarin,

Shemyakina

et al. 2023

Palaeontol Electron

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“…Васильев ([Vasil'ev] (Eble 2000(Eble , 2002 базируется на применении методов геометрической морфометрии (Zelditch et al 2004), а именно, на проведении прокрустова анализа (Rohlf and Slice 1990;Zelditch et al 2004) и анализа «относительных деформаций» (Bookstein 1991;Rohlf 1993), т. е. главных компонент формы (Rohlf 2015). В результате подобного анализа появляется возможность оценить как размер морфопространства в процентах дисперсии, приходящейся на ту или иную группу объектов (Polly and Wójcik 2019;Васильев [Vasil'ev] 2021;…”

Section: оценка динамики морфопространства и межвидовых различий по ф...unclassified

Late Quaternary communities of shrews, Soricidae, from Ural and Far East Regions of Russia: A protocol for the multifactorial morphospace building

Voyta,

Omelko,

Izvarin

et al. 2023

Proceedings ZIN

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The present paper is a preliminary attempt to develop a protocol for analyzing Late Pleistocene and Holocene paleocommunities of soricids using modern approaches for the morphological data analysis. First, we assessed the abilities of fossil soricid collections from Ural and Far East localities to provide a complex interregional analysis of the phenotype variation. Accordingly, for the first time in the general context, the study provides a species list and chronological position of Ural and Far East shrew fossil samples in terms of inter- and intraregional comparisons to reveal general and specific responses of paleocommunities to climatic fluctuations. Second, under the modern approaches, we prepared 182 three-dimensional models of hemimandibles or isolated m1 and built the morphospace of m1 shape for seven Sorex species from the Upper Pleistocene layer MKl-13 and Middle Holocene layer MKl-7 of Medvezhyi Klyk Cave (South Primorye, Russia). Recent samples from East Siberia (Yakutia) and the northern part of the Far East (Magadanskaya Oblast' and Khabarovsky Kray; “cold” habitats) and South Primorye (“warm” habitats) were included into morphospace to actualize potential responses of the fossil samples to Late Quaternary climate fluctuations. Our analysis revealed: (i) a weak reaction of m1 shape of almost all species to the “cold” and “warm” environmental conditions, except S. daphaenodon Thomas, 1907 and S. caecutiens Laxmann, 1788; (ii) two groups of species, namely “generalized” and “specialized” in m1 shape, in line with the idea of distribution of trophic niches among coexisted shrews; (iii) a diagnostic character for fossil samples of S. unguiculatus Dobson, 1890 and S. isodon Turov, 1924.

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Temporal variation in soricid dentition: which are first – qualitative or quantitative features?

et al. 2021

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Geometric Morphometric Tests for Phenotypic Divergence Between Chromosomal Races

Cited by 11 publications

References 53 publications

Morphospace dynamics and intraspecies variety of Sorex araneus and S. tundrensis according to recent and fossil data

Morphospace dynamics and intraspecies variety of Sorex araneus and S. tundrensis according to recent and fossil data

Late Quaternary communities of shrews, Soricidae, from Ural and Far East Regions of Russia: A protocol for the multifactorial morphospace building

Temporal variation in soricid dentition: which are first – qualitative or quantitative features?

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