Biogeography of the cosmopolitan terrestrial diatom Hantzschia amphioxys sensu lato based on molecular and morphological data

AbstractUntil now, the reported diversity of representatives from the genus Hantzschia inhabiting soils from different parts of Eurasia was limited to the few species H. amphioxys, H. elongata and H. vivax and some of their infraspecific taxa. We have studied the morphology, ultrastructure and phylogeny of 25 soil diatom strains, which according to published description would be assigned to “H. amphioxys sensu lato” using 18S rDNA, 28S rDNA and rbcL. We show that strains are made up of seven different species of Hantzschia, including five new for science. Five strains were identified as H. abundans. This species has a slight curvature of the raphe near its external proximal ends. Four of the examined strains were represented by different populations of H. amphioxys and their morphological characteristics fully correspond with its isolectotype and epitype. The main specific features of this species include 21–25 striae in 10 μm, 6–11 fibulae in 10 μm, 40–50 areolae in 10 μm and internal proximal raphe endings bent in opposite directions. H. attractiva sp. nov., H. belgica sp. nov., H. parva sp. nov., H. pseudomongolica sp. nov. and H. stepposa sp. nov. were described based on differences in the shape of the valves, significant differences in dimensions, a lower number of striae and areolae in 10 μm and the degree and direction of deflection of the internal central raphe endings. Based on the study of the morphological variability and phylogeny of soil Hantzschia-species from different geographical locations we conclude that while some species such as H. amphioxys are truly cosmopolitan in their distributions, some sympatric populations of pseudocryptic taxa exist in the Holarctic.

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VARIATION IN ANAL FIN RAY COUNT OF THE REDSIDE SHINER RICHARDSONIUS BALTEATUS (RICHARDSON)

Canadian Journal of Zoology ◽

10.1139/z53-019 ◽

1953 ◽

Vol 31 (3) ◽

pp. 211-225 ◽

Cited By ~ 11

Author(s):

C. C. Lindsey

Keyword(s):

Morphological Characteristics ◽

Introduced Populations ◽

Fin Ray ◽

Parent Stock ◽

Different Populations ◽

The Mean ◽

Redside Shiner ◽

Richardsonius Balteatus ◽

Bodies Of Water ◽

Different Parts

Anal fin rays were counted on 4766 specimens of Richardsonius balteatus from 61 localities in British Columbia. Individual counts varied from 10 to 21, and mean counts of different populations varied from 12.06 to 17.51. Significant differences in counts occurred between different bodies of water, between recently introduced populations and their parent stock, between different parts of the same lake, and between different year classes. Ray counts tended to be higher amongst females in populations with high over-all means, and higher amongst males in populations with low over-all means. A positive correlation was demonstrated between water temperatures recorded in the vicinity of developing fry and the mean numbers of anal rays produced. Within each latitudinal zone a similar correlation occurred between mean ray count and average air temperature during the spawning season, but data on 109 means of populations in U.S.A. and Canada indicated a tendency, probably genetic, towards production, at equivalent temperature, of higher ray count towards the northern end of the range. Loose correlations between anal ray count and certain other morphological characteristics suggest that these may be dependent on more or less common environmental factors but are not linked by direct causality.

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The genus Cystoseira s.l. (Ochrophyta, Fucales, Sargassaceae) in the Black Sea: morphological variability and molecular taxonomy of Gongolaria barbata and endemic Ericaria crinita f. bosphorica comb. nov.

Phytotaxa ◽

10.11646/phytotaxa.480.1.1 ◽

2021 ◽

Vol 480 (1) ◽

pp. 1-21

Author(s):

SOFIA S. SADOGURSKA ◽

JOÃO NEIVA ◽

ANNALISA FALACE ◽

ESTER A. SERRÃO ◽

ÁLVARO ISRAEL

Keyword(s):

Mediterranean Sea ◽

Black Sea ◽

Molecular Taxonomy ◽

Morphological Variability ◽

Morphological Characteristics ◽

Molecular Data ◽

Morphological Data ◽

The Black Sea ◽

Morphological Identification ◽

Additional Tool

Brown algae of the genus Cystoseira sensu lato form the most diverse and productive marine ecosystems throughout the Mediterranean Sea and have equal roles also in the Black Sea where they have been decreasing in the recent years. The taxonomy of Cystoseira s.l. taxa from the Black Sea is still not well understood, and questions arise when related taxa have to be delimited. In addition to morphological descriptions, this study provides for the first time molecular data of the Black Sea Cystoseira s.l. distinct morphologies as an additional tool to clarify their identities and phylogenetic affinities. The analysis of two mitochondrial markers (cytochrome oxidase subunit 1—COI, and 23S-tRNAVal intergenic spacer—mt-spacer) showed that Cystoseira s.l. specimens from the Black Sea belong to two recently resurrected genera, namely Gongolaria and Ericaria. Molecular data confirm the morphological identification of G. barbata, which is characterized by high morphological plasticity in the Black Sea. The morphological data presented in this study support the transition of G. barbata to the genus Gongolaria, which was previously proposed based solely on genetic data. For the Black Sea endemic taxon C. bosphorica, sequence divergence suggests conspecificity with Mediterranean Sea species E. crinita and E. barbatula. However, considering original morphological characteristics of the taxon, its geographical isolation, and endemism, the new combination Ericaria crinita f. bosphorica comb. nov. is proposed.

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Morphological variability of acorns and its taxonomic significance in Quercus. from Turkey

Bangladesh Journal of Botany ◽

10.3329/bjb.v43i3.21601 ◽

2015 ◽

Vol 43 (3) ◽

pp. 293-299 ◽

Cited By ~ 1

Author(s):

Y Bakis ◽

MT Babaç

Keyword(s):

Principal Component Analysis ◽

Morphological Variability ◽

Morphological Characteristics ◽

Principal Component ◽

Component Analysis ◽

Morphological Characters ◽

Taxonomic Significance ◽

Morphological Variations ◽

Quercus Species ◽

Different Populations

Morphological variations of acorn among and within the groups of Quercus species were studied. A total of 617 acorns belonging to 14 species representing all 3 sections of Quercus L. (Fagaceae) in Turkey were examined in this study. Specimens were collected from 47 different populations over both Anatolian and Thrace part of Turkey. Principal component analysis was used to analyze the morphological characteristics of acorns. Results obtained from this study demonstrate the use of morphological characters in differentiating the taxa of Quercus and Cerris sections studied. Another important finding is the introgression among the acorns of species within Quercus section DOI: http://dx.doi.org/10.3329/bjb.v43i3.21601 Bangladesh J. Bot. 43(3): 293-299, 2014 (December)

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Infraspecific morphological variations of Salvia limbata in Iran

Acta Biologica Sibirica ◽

10.14258/abs.v5.i1.5209 ◽

2019 ◽

Vol 5 (1) ◽

pp. 113-121 ◽

Cited By ~ 1

Author(s):

S.M. Talebi ◽

P. Yadegari ◽

S. Behzadpour ◽

A. V. Matsyura

Keyword(s):

Natural Selection ◽

Morphological Traits ◽

Morphological Difference ◽

Morphological Characteristics ◽

Population Data ◽

Morphological Variations ◽

Upgma Tree ◽

Diverse Area ◽

Different Populations ◽

Different Parts

Salvia limbata is an aromatic herb of Lamiaceae, which distributed in different parts of Iran. Studies have revealed that this species has several benefit compounds for human health. In this study, we investigated infra‒specific morphological difference in this species. In total, 21 inflorescence morphological features were evaluated in eight populations; ten individuals were evaluated per each population. Data were analysed using SPSS and MVSP softwares. Morphological traits highly differed among the studied populations and ANOVA test revealed significant differences among most of them. According to UPGMA tree, PCA and PCO plots of morphological characteristics, we reported four distinct phenotypes among the studied populations. CA. Joined plot revealed each of these group were characterized by special traits, which were useful in identification of them. Two phenotypes were monotypic, while the rest were composed of two to four populations. This species has a relative large geographical distribution, the distribution of its populations in diverse area will prevent the focus of natural selection in a given direct. Therefore different phenotypes were found in its different populations.

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Analysis of nutlet morphological characteristics of some Iranian Ajuga L. taxa

Biodiversitas Journal of Biological Diversity ◽

10.13057/biodiv/d201008 ◽

2019 ◽

Vol 20 (10) ◽

Author(s):

Sayed Mehdi Talebi ◽

RAHELEH TABARIPOUR ◽

MAJID ESKANDARI

Keyword(s):

Morphological Characteristics ◽

Pca Analysis ◽

Flora Of Iran ◽

Species Relationship ◽

Upgma Dendrogram ◽

Infraspecific Taxa ◽

Quantitative Characteristics ◽

Morphological Variables ◽

Spss Software ◽

Different Parts

Abstract. Talebi SM, Tabaripour R, Eskandari M. 2019. Analysis of nutlet morphological characteristics of some Iranian Ajuga L. taxa. Biodiversitas 20: 2833-2840. Ajuga is one of the problematic Lamiaceae genera, which naturally grows in different parts of Iran. There are many discussions about infrageneric and infraspecific classifications of the genus and several synonyms were definite for its taxa. In the current study, we evaluated nutlet morphological characteristics from six Iranian taxa of the genus using Scanning Electron Microscopy (SEM) and Light microscopy (LM). In total, thirteen (four qualitative and nine quantitative) nutlet morphological variables were investigated, and the obtained data were analyzed using MVSP and SPSS software. Quantitative nutlet features varied among the studied taxa and ANOVA test revealed significant variations (P <0.01) for most of them. Moreover, PCA analysis showed some characteristics made more than 60% of variations. Some quantitative characteristics like nutlet and ventral sculpturing shapes were nearly stable among the taxa. But dorsal sculpturing shape and existence of exocarp cell indumentum highly varied among the taxa and could be used as distinguishing traits for identification of taxa. The studied taxa were divided into four groups in UPGMA dendrogram and also PCA and PCO plots of the nutlet features. CA. Joined plot revealed that each group had specific nutlet characteristic (s). Taxa arrangements were not similar to those have been definite for them in Flora Iranica and Flora of Iran. Furthermore, some infraspecific taxa must be redefinite. It is advised to use complementary molecular studies to better clearing species relationship, taxa position and rank in the genus.

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Epigenetic polymorphism in wild populations of Mus musculus

Genetics Research ◽

10.1017/s0016672300003566 ◽

1963 ◽

Vol 4 (2) ◽

pp. 193-220 ◽

Cited By ~ 94

Author(s):

R. J. Berry

Keyword(s):

House Mouse ◽

Mus Musculus ◽

Stabilizing Selection ◽

British Isles ◽

Wild Populations ◽

Local Populations ◽

The World ◽

Different Populations ◽

Different Parts

It has been suggested (Berry & Searle, 1963) that the discontinuous (‘quasi-continuous’) variants studied by Grüneberg et al. in the skeleton of rodents can be regarded as constituting epigenetic polymorphism in different populations. Comparisons have been made between the incidences of skeletal variants in house mouse populations collected from: corn ricks on a single farm in Hampshire; eleven separated localities in different parts of the British Isles; and nine other places throughout the world. These showed that the method could profitably be used for genetically characterizing and hence comparing populations. There was evidence suggestive of genetical drift between local populations and stabilizing selection over a larger area.

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First bioacoustic and morphological data for the presence of Pelophylax bedriagae in Bulgaria

Acta Scientifica Naturalis ◽

10.2478/asn-2018-0008 ◽

2018 ◽

Vol 5 (1) ◽

pp. 54-63

Author(s):

Simeon Lukanov ◽

Georgi Popgeorgiev ◽

Nikolay Tzankov

Keyword(s):

Morphological Characteristics ◽

Morphological Data ◽

Marsh Frog ◽

Water Frog ◽

Pelophylax Ridibundus ◽

Mating Calls ◽

The Town ◽

Pelophylax Bedriagae ◽

Made In

AbstractWater frog mating calls from two localities were studied and analyzed. Recordings were made in the summer of 2010 at the Arkutino swamp near the town of Primorsko and at the Vurbitza River near the town of Momchilgrad. A total of 154 calls were analyzed and the results suggested the presence of both the Marsh frog (Pelophylax ridibundus) and the Levant frog (Pelophylax bedriagae) in both sites, with the former being more frequent in Vurbitza River, and the latter – in Arkutino. At Vurbitza, we also captured and measured 2 specimens, which morphological characteristics differed from P. ridibundus and matched those of P. bedriagae. These are the first localities for P. bedriagae in Bulgaria.

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Euphorbia mongoliensis (Euphorbiaceae), a new species from Inner Mongolia, China

Phytotaxa ◽

10.11646/phytotaxa.501.1.6 ◽

2021 ◽

Vol 501 (1) ◽

pp. 151-161

Author(s):

ER-HUAN ZANG ◽

MING-XU ZHANG ◽

WEN-LE WANG ◽

CHUN-HONG ZHANG ◽

MIN-HUI LI

Keyword(s):

New Species ◽

Geographical Distribution ◽

Inner Mongolia ◽

Pollen Morphology ◽

Morphological Characteristics ◽

Euphorbia Esula ◽

Morphological Data ◽

New Taxon ◽

Flora Of China ◽

A New Species

In May 2020, a new taxon of Euphorbia, Euphorbiaceae was collected from a dry hillside of Dongsheng District, Ordos City, Inner Mongolia. The morphological characteristics of the specimens analyzed differ from those of the known Euphorbia species from this region; therefore, we suspected this may be a new species, and we set to analyze the ITS2 sequences of some Euphorbia species. The results show that the new taxon belongs to the sect. Esula of Euphorbia subg. Esula. It is similar to Euphorbia esula (description from Flora of China) but does not belong to the same species. Concomitantly, plant morphological data and pollen morphology results show significant differences between the new taxon, E. esula and E. caesia, a finding that supports the delimitation of this new taxon, which is named Euphorbia mongoliensis in accordance with its geographical distribution.

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Morphological and genetic variability of Baetis (Rhodobaetis) braaschi Zimmermann, 1980 (Ephemeroptera: Baetidae)

Zootaxa ◽

10.11646/zootaxa.3323.1.2 ◽

2012 ◽

Vol 3323 (1) ◽

pp. 27 ◽

Cited By ~ 2

Author(s):

PAVEL SROKA ◽

ALEXANDER V. MARTYNOV ◽

ROMAN J. GODUNKO

Keyword(s):

Genetic Variability ◽

Methodological Approach ◽

Morphological Variability ◽

Geographic Origin ◽

Intraspecific Variability ◽

Morphological Data ◽

Mtdna Coi ◽

Geographic Regions ◽

Coi Sequences ◽

The Individual

Specimens of Baetis (Rhodobaetis) braaschi Zimmermann, 1980 from the three distant geographic regions (Crimean Pen-insula, Eastern Ukraine and Caucasus) are investigated and compared using a methodological approach combining mor-phological and molecular (partial mtDNA COI sequences) data. Intraspecific variability in several morphologicalcharacters is recognized and described, whereas COI sequences are found to be very uniform. The amount and distributionof the changes of COI sequences do not follow the pattern of morphological variability and/or geographic origin of thespecimens. This indicates that analysis of the changes in the COI sequence can contradict the pattern of morphologicalcharacters commonly used for the discrimination of the individual Rhodobaetis species. As a basis for the future taxonom-ic changes concerning subgenus Rhodobaetis, it is advised (where possible) to critically evaluate both molecular and morphological data.

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New morphological data and molecular diagnostic of Henneguya friderici (Myxozoa: Myxobolidae), a parasite of Leporinus friderici (Osteichthyes: Anostomidae) from southeastern Brazil

Revista Brasileira de Parasitologia Veterinária ◽

10.1590/s1984-29612017010 ◽

2017 ◽

Vol 26 (1) ◽

pp. 81-88 ◽

Cited By ~ 2

Author(s):

Letícia Poblete Vidal ◽

José Luis Luque

Keyword(s):

Body Length ◽

18S Rdna ◽

Genetic Similarity ◽

Morphological Data ◽

Southeastern Brazil ◽

Molecular Diagnostic ◽

Similarity Analysis ◽

Rdna Sequencing ◽

The Family ◽

Gill Filaments

Abstract The myxozoan Henneguya friderici is a parasite of the gills, intestine, kidney and liver of Leporinus friderici, a characiform fish belonging to the family Anostomidae. Forty-two specimens of L. friderici that had been caught in the Mogi Guaçú River, state of São Paulo, were studied. Elongated white plasmodia were found in the gill filaments of 10 host specimens (24%). The mature spores had an ellipsoidal body with polar capsules of equal size and caudal length greater than body length. This study also described 18S rDNA sequencing of H. friderici infecting the gill filaments. This produced a sequence of 1050 bp that demonstrated significant genetic differences with previously described species of Henneguya. Similarity analysis using sequences from species that clustered closest to those produced by this study showed that the species with greatest genetic similarity to H. friderici was H. leporinicola, with 94% similarity.

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