scholarly journals Karyological data of four geophytes native to Tunisia

2021 ◽  
Vol 31 ◽  
Keyword(s):  
Karyological Data

scholarly journals New Contribution to the Knowledge on the Chromosome Numbers of Turkish Cerambycidae (Coleoptera)

2021 ◽  
Vol 69 (2) ◽  
pp. 93-99
Author(s):  
Yavuz Koçak ◽  
Elmas Yağmur
Keyword(s):  
Chromosome Number ◽  
Sex Determination ◽  
Chromosome Numbers ◽  
Chromosome Count ◽  
Chromosomal Number ◽  
The Poor ◽  
Karyological Data ◽  
First Time

Information on the karyotypes of Turkish species of Cerambycidae is scanty. Our study contributes to the knowledge of the karyological data (chromosomal number and mechanism of sex determination) of five Turkish longicorn beetles; karyotypes of four taxa, one endemic, are described for the first time and for the remaining one, Purpuricenus budensis (Götz, 1783), the previously published chromosome count is confirmed. The chromosome number of Purpuricenus desfontainii inhumeralis Pic, 1891 and Purpuricenus budensis (Götz, 1783) (Cerambycinae, Trachyderini) was found to be 2n = 28 (13 + Xyp); Clytus rhamni Germar, 1817 and Plagionotus floralis (Pallas, 1773) (Cerambycinae, Clytini) 2n = 20 (9 + Xyp); and the endemic Dorcadion triste phrygicum Peks, 1993 (Lamiinae, Dorcadionini) 2n = 24 (11 + Xyp). In view of the paucity of data available until now, our study is important for both to improve the poor karyological knowledge of Turkish Cerambycidae and to provide an incentive for other researchers.

scholarly journals Molecular and karyological data confirm that the enigmatic genus Platypholis from Bonin-Islands (SE Japan) is phylogenetically nested within Orobanche (Orobanchaceae)

2016 ◽  
Vol 130 (2) ◽  
pp. 273-280 ◽  
Author(s):  
Xi Li ◽  
Tae-Soo Jang ◽  
Eva M. Temsch ◽  
Hidetoshi Kato ◽  
Koji Takayama ◽  
...  
Keyword(s):  
Bonin Islands ◽  
Karyological Data

Chromosome number in Dendroctonus micans and karyological divergence within the genus Dendroctonus (Coleoptera: Scolytidae)

2002 ◽  
Vol 134 (4) ◽  
pp. 503-510 ◽  
Author(s):  
Gerardo Zúñiga ◽  
Yolanda Salinas-Moreno ◽  
Jane L. Hayes ◽  
Jean Claude Grégoire ◽  
Ramón Cisneros
Keyword(s):  
North America ◽  
Chromosome Number ◽  
The Other ◽  
Dendroctonus Micans ◽  
Spruce Beetle ◽  
Karyological Data

AbstractThe meiotic formula of the European spruce beetle, Dendroctonus micans (Kugelann), is 10 AA + Xyp in males and 10 AA + XX in females. This karyotype is different from the morphologically similar Dendroctonus punctatus LeConte (14 AA + Xyp), which is consistent with the taxonomic validity of both species. The chromosome number found in D. micans, added to karyological data from other species of the genus Dendroctonus Erichson, suggest that the karyological diversification within this genus may have occurred in two directions: one toward more southerly latitudes in North America and the other toward Europe and Asia.

scholarly journals Features of the chromosome set of representatives of smoothnosed bats of the North Caucasus

2021 ◽  
Vol 16 (2) ◽  
pp. 26-38
Author(s):  
R. I. Dzuyev ◽  
M. A. Khashkulova ◽  
V. N. Kanukova ◽  
E. A. Baragunova ◽  
R. K. Sabanova ◽  
...  
Keyword(s):  
Primary Role ◽  
North Caucasus ◽  
Main Method ◽  
The North ◽  
Pipistrellus Pipistrellus ◽  
The Family ◽  
Robertsonian Rearrangements ◽  
Karyological Data ◽  
Acrocentric Chromosomes ◽  
Eptesicus Serotinus

Aim. The aim of this work was to study the chromosome set of some representatives of smooth-nosed bats of the North Caucasus.Material and Methods. Various research methods were used to achieve this goal, including that of dried preparations (the main method for obtaining chromosomal preparations) and that of constructing karyograms.Results. A comparative analysis of the karyological data of 11 species of smooth-nosed bats of the North Caucasus was undertaken and the karyological characteristics of the species accepted in the latest reports on the fauna of Russia and the Caucasus were clarified. The similarity of G -bands in large pairs of meta- and submetacentric chromosomes in Myotis blythi, Myotis mystacinus, Pipistrellus pipistrellus, Pipistrellus kuhli and Vepertilio murinus with bands in small and medium-sized acrocentric chromosomes such as in Eptesicus seotinus may indicate the evolution of the karyotype of the first species by Robertsonian translocation, i.e. compounds of acrocentric chromosomes of Eptesicus serotinus in various combinations. When comparing karyotypes in the family Vespertilionidae, it was found that the karyotype of Eptesicus serotinus is "archaic" (2n=50, NFa=48). With the help of karyological data, the authors composed schemes of phylogenetic relationships of genera in the family Vespertilionidae, which differ to a certain extent from the schemes compiled by taxonomists for representatives of this family.Conclusions. Based on the results obtained, we can conclude that the karyotype of Eptesicus serotinus is the most primitive among the representatives of the order of bats. The primary role in the evolution of this group was played by Robertsonian rearrangements and pericentric inversions (reduction of NFa and 2n from 50 to 38).

scholarly journals Uncovering the species diversity of subterranean rodents at the end of the World: three new species of Patagonian tuco-tucos (Rodentia, Hystricomorpha, Ctenomys)

PeerJ ◽  
2020 ◽  
Vol 8 ◽  
pp. e9259 ◽  
Author(s):  
Pablo Teta ◽  
Guillermo D’Elía
Keyword(s):  
New Species ◽  
Dna Sequences ◽  
Phylogenetic Analyses ◽  
Taxonomic Status ◽  
Subterranean Rodents ◽  
South American ◽  
Northern Patagonia ◽  
Karyological Data ◽  
Three New Species ◽  
Genus One

Ctenomys Blainville 1826 is one of the most diverse genera of South American caviomorph rodents. Currently, six species of this genus are reported from Patagonia, south of 42°S. In this contribution, we assessed the taxonomic status of several populations from eastern and central Chubut province, northern Patagonia. Based on phylogenetic analyses of DNA sequences, morphology assessment (qualitative and quantitative), and previously published karyological data, we describe three new species of this genus, one formed by two subspecies, endemic to northern Patagonia. In addition, we include C. coyhaiquensis Kelt and Gallardo 1994 into the synonymy of C. sericeus J.A. Allen 1903. Finally, we discussed the need for additional integrative approaches, including field collection of specimens, to better understand the diversity of this highly speciose rodent genus.

scholarly journals A Karyological Study of Tenualosa Ilisha (Hamilton, 1822) From the Confluence of Padma and Meghna River of Bangladesh

2021 ◽  
Vol 49 (2) ◽  
pp. 243-255
Author(s):  
Md Abu Horayra ◽  
Md Arafat Rahman Khan ◽  
Faria Akbar ◽  
Susmita Saha ◽  
Mehrab Chowdhury ◽  
...  
Keyword(s):  
Cytogenetic Analysis ◽  
Chromosome Complement ◽  
Staining Technique ◽  
Chromosome Length ◽  
Continuous Type ◽  
Heterogeneous Habitats ◽  
Karyological Data ◽  
Migratory Routes ◽  
Centromeric Position ◽  
Tenualosa Ilisha

Tenualosa ilisha (Hamilton, 1822), commonly known as Hilsha shad is a valuable and highly acceptable species in terms of their high flavored properties. Hilsha shad has striking morpho-genetical adaptation to heterogeneous habitats across their migratory routes. Cytogenetic analysis demonstrates the changes in chromosomes. But none was focused on the cytogenetic analysis of T. ilisha in Bangladesh. T. ilisha was found to possess 2n = 42 number of chromosomes along with a karyotype formula: 1M + 31m + 8sm + 2st using giemsa staining technique. The results demonstrated ‘diffuse type of interphase nuclei, co-existence of continuous type and interstitial type of prophase chromosomes respectively. No heteromorphic sex chromosomes were determined cytologically. The presence of diverse types of chromosomes based on centromeric position, gradual decrease in total haploid chromosome complement, mean centromeric asymmetry, coefficient of variation of chromosome length and Stebbins’s classification highlighted its asymmetry in karyotype with advance nature. Therefore, the elemental karyological data will offer information for the proper identification, cytotaxonomical classification, expanding productivity and preservation of genetic resources ofT. ilisha. Bangladesh J. Zool. 49 (2): 243-255, 2021

The karyotype of Blarinomys breviceps (Mammalia: Rodentia: Cricetidae) with comments on its morphology and some ecological notes

Zootaxa ◽  
2008 ◽  
Vol 1907 (1) ◽  
pp. 47-60 ◽  
Author(s):  
LENA GEISE ◽  
HELENA G. BERGALLO ◽  
CARLOS E. L. ESBÉRARD ◽  
CARLOS F. D. ROCHA ◽  
MONIQUE VAN SLUYS
Keyword(s):  
Forest Type ◽  
Evergreen Forest ◽  
Southeastern Brazil ◽  
Adult Males ◽  
Semideciduous Forest ◽  
Karyological Data ◽  
Forested Areas ◽  
Molar Teeth ◽  
Misiones Province ◽  
Upper Molar

The geographic distribution of Blarinomys breviceps (Winge) includes few localities in forested areas in the Atlantic Rainforest from Bahia state in Brazil up to Misiones province in Argentina. Here we add 14 new records for the species in the region of southeastern Brazil. These findings provided information on morphology, natural history and the first karyological data for the species. During two short surveys, one in Santuário da Serra da Concórdia, Valença municipality and another in Fazenda Marimbondo, Mauá municipality, Rio de Janeiro State, Brazil, six specimens were collected in pit fall traps. The specimen trapped in Serra da Concórdia was a sub adult male (age class 3 according to the upper molar row wear). In Fazenda Marimbondo, four adult males and one adult female were captured. Serra da Concórdia is a secondary vegetation in a semideciduous forest type, being a small fragment of 220 ha. The second locality, Fazenda Marimbondo is a high montane forest in an evergreen forest type. Karyotype of the specimen collected in the first locality presented a diploid number of 28 chromosomes and an autosomal number of 50. The specimen collected in Serra da Concórdia was kept alive for seven days. During this period it was fed with live arthropods, what confirms their insectivorous feeding habit, consistent with the molar teeth morphology.

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