Distribution of the dwarf dog-faced bat Molossops temminckii (Chiroptera: Molossidae) in Colombia and comments on its morphometry

AbstractThe genus Molossops includes two species that are restricted to South America: Molossops neglectus and Molossops temminckii. The smaller dog-faced dwarf Molossops temminckii is distributed from Colombia to Argentina and has a wide morphological variation and vocal plasticity. In Colombia, this species remains poorly known. To fill distributional gaps, we present novel records from Arauca, Atlántico, Bolívar, Córdoba, and Huila departments. We also present an analysis of the morphometric variation in South America using Principal Component Analyses. These show an external and cranial difference of specimens of Colombia in respect of other and South America populations. In Colombian landscapes dominated by the floodplain savanna of the Orinoco region, Molossops temminckii is smaller than in the other regions of the country, and the previously suggested existence of cryptic diversity within the taxon should be evaluated. Therefore, we suggest further integrative analyses to investigate a possible subspecific status of some Colombian populations.

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New records of the bats Histiotus montanus and Molossops neglectus in southeastern Brazil with notes on biology and morphology

Caldasia ◽

10.15446/caldasia.v42n1.73949 ◽

2020 ◽

Vol 42 (1) ◽

pp. 30-37

Author(s):

Renato Gregorin ◽

Matheus C. S. Mancini ◽

Rafael S. Laurindo ◽

Rodrigo Mello ◽

Ligiane M. Moras ◽

...

Keyword(s):

Principal Component Analysis ◽

South America ◽

Morphological Variation ◽

Rare Species ◽

New Records ◽

Principal Component ◽

Biological Data ◽

Southeastern Brazil ◽

Morphometric Variation ◽

Aerial Insectivore

Distributional and biological data for some bat species in South America are scarce, mainly in non-phyllostomid bats. Herein we provide new records of two rare species of aerial insectivore bats for southeastern Brazil, Histiotus montanus and Molossops neglectus. In addition, we report facial morphological variation in color and new records of ectoparasites for H. montanus. For M. neglectus we performed a Principal Component Analysis (PCA) to check for morphometric variation based on forearm and skull dimensions, the southerly distributed specimens showing slightly smaller measurements than the northern ones.

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Morphological variation in the genus Juliomys (Rodentia: Cricetidae: Sigmodontinae) and taxonomic status of Juliomys anoblepas (Winge 1887) from the Quaternary of Southeast Brazil

Zootaxa ◽

10.11646/zootaxa.4861.3.9 ◽

2020 ◽

Vol 4861 (3) ◽

pp. 429-443

Author(s):

CAROLINA PIRES ◽

MARCELO WEKSLER ◽

CIBELE R. BONVICINO

Keyword(s):

Principal Component Analysis ◽

Morphological Variation ◽

Morphological Analysis ◽

Principal Component ◽

Taxonomic Status ◽

Morphological Characters ◽

The Other ◽

Anterior Portion ◽

Living Species ◽

Qualitative Characters

The region of Lagoa Santa, Minas Gerais, Brazil, is one of the most important karstic areas of the Brazilian Quaternary due to the faunistic diversity of living and extinct forms. Among them, some taxa remain poorly studied, as is the case of Calomys anoblepas Winge 1887. Despite the recent allocation of the taxon within Juliomys, its description and morphological analysis are condensed, based on comparative few specimens and on few informative characters. In this study, we investigate characters proposed to distinguish species of Juliomys, and reevaluate the taxonomic status of the fossil Juliomys anoblepas. We analyzed 80 cranio-dental morphological characters in 233 specimens represented by the four species currently recognized: J. pictipes (Osgood 1933), J. rimofrons Oliveira & Bonvicino 2002, J. ossitenuis Costa, Pavan, Leite & Fagundes 2007, and J. ximenezi Christoff, Vieira, Oliveira, Gonçalves, Valiati & Tomasi 2016. We also performed principal component analysis on eight craniodental measurements available for the J. anoblepas hypodigm. The review of morphological systems and the evaluation of the characters used in the literature revealed that there are no diagnostic characters in the anterior portion of the skull and in the molar series of Juliomys, being difficult to differentiate the fossil from the other living species. Only six qualitative characters were variable and applicable to the hypodigm of J. anoblepas. Characters are polymorphic, invariable, or the fossil is not sufficiently complete to determinate its states. The taxon could not be morphometrically differentiated from J. pictipes and J. ossitenuis. Based on the results presented herein, we consider J. anoblepas as a nomen dubium and restrict its name to the taxon’s hypodigm.

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Morphological variation and systematics of Dipsas catesbyi (Sentzen, 1796) and Dipsas pavonina Schlegel, 1837 (Serpentes: Dipsadinae)

Zootaxa ◽

10.11646/zootaxa.2203.1.3 ◽

2009 ◽

Vol 2203 (1) ◽

pp. 31-48 ◽

Cited By ~ 5

Author(s):

ANA CAROLINE DE LIMA ◽

ANA LÚCIA DA COSTA PRUDENTE

Keyword(s):

South America ◽

Geographic Variation ◽

Geographic Distribution ◽

Morphological Variation ◽

Color Pattern ◽

High Variability ◽

The Other ◽

Morphological Similarity ◽

Morphometric Characters ◽

Morphological Studies

The genus Dipsas includes approximately 32 species, distributed from Mexico to South America (Brazil, Argentina, Paraguay, Bolivia and Peru). High variability in color pattern and scalation has made it difficult to define limits among Dipsas species and to interpret patterns of geographic variation. We analyzed 14 meristic and 18 morphometric characters of 483 specimens of D. catesbyi and 129 specimens of D. pavonina, as well as their color pattern, coloration, hemipenis, cephalic glands and geographic distribution. We describe variation in meristic and morphometric characters and incorporate new characters into revised diagnoses. The results indicate a greater morphological similarity between D. catesbyi and species of Sibynomorphus than with the other species of Dipsas. More morphological studies should be done to evaluate current phylogenetic proposals for relationships within the tribe Dipsadini.

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A psycholexical Study of Virtues in the Dutch Language, and Relations between Virtues and Personality

European Journal of Personality ◽

10.1002/per.777 ◽

2011 ◽

Vol 25 (1) ◽

pp. 43-52 ◽

Cited By ~ 9

Author(s):

Boele De Raad ◽

Jan Pieter Van Oudenhoven

Keyword(s):

Big Five ◽

Principal Component ◽

The Other ◽

Personality Measures ◽

Regression Analyses ◽

Self And Other ◽

Five Factors ◽

Principal Component Analyses ◽

Dutch Language ◽

Big Five Factors

Following the psycholexical approach, a list of 153 virtue descriptors was selected from a previously constructed list of trait–terms, under the assumption that virtues form a subset of traits. The virtue list was administered to 400 participants (self– and other–raters), who had to indicate the extent to which each term applied to them or to the others. Principal Component Analyses were performed yielding six factors of virtues. In addition, Big Five factors and markers of an external set of virtues were constructed. Correlation and regression analyses were performed to describe the relations between virtues, the Dutch Big Five system and other virtue systems. Compared to the other virtue systems, the present study revealed some additional domains. The overlap found with personality measures corresponds to earlier findings supporting the assumption that virtues are important traits. Copyright © 2010 John Wiley & Sons, Ltd.

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The Essential Oil Compositions of Three Teucrium Taxa Growing Wild in Sicily: HCA and PCA Analyses

Molecules ◽

10.3390/molecules26030643 ◽

2021 ◽

Vol 26 (3) ◽

pp. 643

Author(s):

Giorgia Catinella ◽

Natale Badalamenti ◽

Vincenzo Ilardi ◽

Sergio Rosselli ◽

Laura De Martino ◽

...

Keyword(s):

Cluster Analysis ◽

Chemical Composition ◽

Essential Oils ◽

Principal Component ◽

Hierarchical Cluster ◽

The Other ◽

Qualitative And Quantitative ◽

Geographical Variations ◽

Sesquiterpene Hydrocarbons ◽

Principal Component Analyses

The chemical composition and the qualitative and quantitative variability of the essential oils of three taxa belonging to the Teucrium genus were studied. The investigated taxa, that grow wild in Sicily, were Teucrium flavum L. (section Chamaedrys (Mill.) Scheb.), Teucrium montanum and Teucrium capitatum L. of section Polium (Mill.) Scheb. Essential oils were extracted by hydrodistillation and analyzed by GC-MS. In total, 74 compounds were identified. Sesquiterpene hydrocarbons were found to be the main group for T. flavum (48.3%). T. capitatum consisted essentially of monoterpene hydrocarbons (72.7%), with α-pinene (19.9%), β-pinene (27.6%) and sylvestrene (16.6%) as the most abundant compounds whereas ledene oxide (12.1%), epiglobulol (13.5%) and longifolenaldehyde (14.5%) were identified as the main constituents among the oxygenated sesquiterpenes (63.5%) of T. montanum. Furthermore, a complete literature review on the composition of the essential oils of all the other accessions of these Teucrium taxa, studied so far, was performed. Hierarchical Cluster Analysis (HCA) and Principal Component Analyses (PCA) were used in order to demonstrate geographical variations in the composition of the essential oils.

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The locomotor and predatory habits of unenlagiines (Theropoda, Paraves): inferences based on morphometric studies and comparisons with Laurasian dromaeosaurids

10.1101/553891 ◽

2019 ◽

Author(s):

Federico A. Gianechini ◽

Marcos D. Ercoli ◽

Ignacio Díaz-Martínez

Keyword(s):

Principal Component ◽

Mechanical Efficiency ◽

The Other ◽

Large Prey ◽

Data Sampling ◽

Morphological Aspects ◽

Articular Surfaces ◽

Morphometric Analyses ◽

Principal Component Analyses ◽

Evolutionary Paths

AbstractUnenlagiinae is mostly recognized as a subclade of dromaeosaurids. They have the modified pedal digit II that characterize all dromeosaurids, which is typically related to predation. However, derived Laurasian dromaeosaurids (eudromaeosaurs) differ from unenlagiines in having a shorter metatarsus and pedal phalanx II-1, and more ginglymoid articular surfaces in metatarsals and pedal phalanges. Further, unenlagiines have a subarctometatarsal condition, which could have increased the mechanical efficiency during locomotion. All these discrepancies possibly reflect different locomotor and predatory habits. To evaluate this we conducted morphometric analyses and comparisons of qualitative morphological aspects. The former consisted in two phylogenetic principal component analyses, one of them based on lengths of femur, tibia and metatarsus, and width of metatarsus, and the other based on lengths of pedal phalanges. The data sampling covered several coelurosaurian and non-coelurosaurian taxa. The first analysis showed the unenlagiines close to taxa with long tibiae and long and slender metatarsi, which are features considered to provide high cursorial capacities. Instead, eudromaeosaurs are close to taxa with shorter tibiae and shorter and wider metatarsi, which can be considered with low cursorial capacities. The second analysis showed that eudromaeosaurs and unenlagiines have similar phalangeal proportions. Moreover, they share the elongation of distal phalanges, which is a feature related to the capacity of grasping. The shorter and wider metatarsus, more ginglymoid articular surfaces and a shorter pedal phalanx II-2 of eudromaeosaurs possibly allowed them to exert a greater gripping strength. Thus, they had the potential of hunting large prey. Instead, the longer and slender subarctometatarsus, lesser ginglymoid articular surfaces and a longer pedal phalanx II-2 of unenlagiines possibly gave to them greater cursorial capacities and the ability to hunt smaller and elusive prey on the ground. Thus, the different morphological evolutionary paths of dromaeosaurids lineages seem to indicate different locomotor and predatory specializations.

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Geographical Influences on Morphological Variation in Rubus ursinus Subsp. macropetalus

HortScience ◽

10.21273/hortsci.31.4.609b ◽

1996 ◽

Vol 31 (4) ◽

pp. 609b-609

Author(s):

Angela K. Anderson ◽

Chad E. Finn

Keyword(s):

Disease Resistance ◽

Morphological Variation ◽

Cold Hardiness ◽

Principal Component ◽

Common Garden ◽

Fruit Weight ◽

Fruit Traits ◽

Principal Component Analyses ◽

Autumn Leaf

Morphological variation was examined in 20 populations of Rubus ursinus subsp. macropetalus from British Columbia, Washington, and Oregon grown in a common garden. There was significant variability between and within populations for most traits studied. Principal component analyses separated populations along geographical clines for traits of horticultural significance. PC1 represented a general vigor component in all trials, and formed a negative correlation with elevation in four of five analyses (r = 0.60, 0.58, 0.50, 0.49; P < 0.05). Autumn leaf senescence tended to increase from west to east and with elevation. With higher elevation, there was a tendency for fruit weight to decrease, for later vegetative budbreak and fruit ripening, and for a shorter budbreak to first flower interval. From north to south, budbreak became somewhat earlier, cane spot susceptibility decreased, and budbreak to first flower interval increased. Characterization of this species will assist breeders to identify possible sources of cold hardiness, disease resistance, improved vigor, and acceptable fruit traits for the improvement of cultivated trailing blackberry.

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Morphological variation of Juniperus oxycedrus subsp. macrocarpa (Cupressaceae) in three Italian localities

Acta Societatis Botanicorum Poloniae ◽

10.5586/asbp.2004.016 ◽

2011 ◽

Vol 73 (2) ◽

pp. 113-119 ◽

Cited By ~ 15

Author(s):

Małgorzata Klimko ◽

Krystyna Boratyńska ◽

Adam Boratyński ◽

Katarzyna Marcysiak

Keyword(s):

Principal Component Analysis ◽

Morphological Variation ◽

Principal Component ◽

The Other ◽

Seed Number ◽

Geographic Latitude ◽

Discrimination Analysis ◽

Euclidean Distances ◽

Intrapopulational Variation ◽

Key Characters

The intra- and interpopulational geographic variation of three distant populations of <em>J. oxycedrus </em>subsp. <em>macrocarpa </em>was examined biometrically on the basis of morphological key-characters of needles, seeds and cones. The shortest Euclidean distances were used in the agglomerative grouping of closest neighbourhood and discrimination analysis with principal component analysis (PCA) was performed to verify the south-north differentiation of the taxon in Italy. Most of the cone and seed dimensional characters are correlated. No significant correlations were found between cone and needle characters. The sampled populations differ only insignificantly from one another, while the intrapopulational variation is slightly higher. Cone length as well as seed number, width and thickness were significantly correlated with geographic latitude, while the other four characters are not. Differences in cone shape were observed between individuals, so that several morphotypes can be distinguished.

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Meristic and Morphometric Variation between the Endangered Acadian Whitefish, Coregonus huntsmani, and the Lake Whitefish, Coregonus clupeaformis, in the Canadian Maritime Provinces and the State of Maine, USA

Canadian Journal of Fisheries and Aquatic Sciences ◽

10.1139/f91-253 ◽

1991 ◽

Vol 48 (11) ◽

pp. 2140-2151 ◽

Cited By ~ 7

Author(s):

Thomas A. Edge ◽

Don E. McAllister ◽

Sami U. Qadri

Keyword(s):

Morphological Variation ◽

Morphological Characteristics ◽

Principal Component ◽

The State ◽

Coregonus Clupeaformis ◽

Lake Whitefish ◽

Maritime Provinces ◽

Morphometric Variation ◽

Morphometric Characters ◽

Adipose Fin

Principal component and discriminant function analyses of morphological variation between whitefish populations from the Canadian Maritime Provinces and the State of Maine, USA, clearly distinguished the Acadian whitefish, Coregonus huntsmani, from the lake whitefish species complex, Coregonus clupeaformis. Ten meristic and 44 morphometric characters were examined and the species were best discriminated by number of vertebrae (>97% separation) and mouth shape. Acadian whitefish had a terminal mouth and 64–67 [Formula: see text] vertebrae, while lake whitefish had a subterminal mouth and 58–64 [Formula: see text] vertebrae. Acadian whitefish were also characterized by having more lateral line scales (88–100, [Formula: see text] than lake whitefish (63–95, [Formula: see text], a shorter adipose to caudal fin length, a smaller adipose fin, and a longer pelvic axillary process than lake whitefish. Considerable morphological variation was found between lake whitefish populations examined although there was no morphological basis to recognize any lake whitefish population as taxonomically distinct. The Acadian whitefish has morphological characteristics of both subgenera Leucichthys and Coregonus; it could be important for understanding the evolution of coregonine fishes and its imminent extinction would represent a serious loss of genetic diversity.

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THE CONVERGENCE OF HABITAT STRUCTURE IN TUNDRA COLLEMBOLAN COMMUNITIES (INSECTA: ORDER COLLEMBOLA)

The Canadian Entomologist ◽

10.4039/ent1151129-9 ◽

1983 ◽

Vol 115 (9) ◽

pp. 1129-1145 ◽

Cited By ~ 3

Author(s):

Masanori J. Toda ◽

Kouzou Tanno

Keyword(s):

Habitat Structure ◽

Principal Component ◽

The Other ◽

Statistical Techniques ◽

Mackenzie Delta ◽

Multivariate Statistical Techniques ◽

Multivariate Statistical ◽

Cluster Analyses ◽

Ecological Changes ◽

Principal Component Analyses

AbstractHabitat structure of two collembolan communities, one at Barrow, Alaska, U.S.A., the other at Tuktoyaktuk in the Mackenzie Delta, Canada, has been analyzed in relation to microtopographies characteristic of tundra regions. Multivariate statistical techniques, cluster analyses (UPGMA), and principal component analyses (PCA) reveal various ecological changes in component species. In spite of such local variations in component species, the two communities show similar patterns of habitat structure that are organized principally along a gradient of environmental moisture.

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