+ Site Statistics
References:
54,258,434
Abstracts:
29,560,870
PMIDs:
28,072,757
+ Search Articles
+ Subscribe to Site Feeds
Most Shared
PDF Full Text
+ PDF Full Text
Request PDF Full Text
+ Follow Us
Follow on Facebook
Follow on Twitter
Follow on LinkedIn
+ Translate
+ Recently Requested

Cytogenetic analysis on geographically distant parthenogenetic populations of Tityus trivittatus Kraepelin, 1898 (Scorpiones, Buthidae): karyotype, constitutive heterochromatin and rDNA localization



Cytogenetic analysis on geographically distant parthenogenetic populations of Tityus trivittatus Kraepelin, 1898 (Scorpiones, Buthidae): karyotype, constitutive heterochromatin and rDNA localization



Comparative Cytogenetics 8(2): 81-92



Tityus trivittatus Kraepelin, 1898 is the most medically important scorpion species of Argentina, and parthenogenetic populations are present in the major cities of this country. We performed a detailed cytogenetic analysis of specimens of three synanthropic parthenogenetic populations, all distant about 900 km from each other, using Ag-NOR, C-banding, DAPI/CMA3 staining and FISH with autologous 28S rDNA probes. The karyotype of females and embryos from the three populations showed 2n=6, with two large and four middle-sized holokinetic chromosomes. Constitutive heterochromatin was found in terminal and interstitial location and its pattern allowed the identification of three chromosome pairs. NORs were found on the terminal heterochromatic region of one pair of middle-sized chromosomes. The use of fluorochromes to characterize heterochromatin showed the absence of GC-rich heterochromatin and a low and variable number of AT-rich heterochromatic regions. We propose that a possible explanation for the lack of karyotypic variation between these geographically distant populations could be a recent colonization of urban areas by human means of synanthropic specimens from a single lineage of northeastern Argentina.

(PDF emailed within 0-6 h: $19.90)

Accession: 052428506

Download citation: RISBibTeXText

PMID: 25147621

DOI: 10.3897/CompCytogen.v8i2.6461


Related references

First records of Tityus trivittatus Kraepelin Scorpiones,BButhidae from western Argentina Primeros registros de Tityus trivittatus Kraepelin Scorpiones, Buthidae en el oeste Argentino. Multequina, 11: 75-78, 2002

Redescription and distribution in Argentina of Tityus trivittatus trivittatus Kraepelin 1898 (Scorpiones, Buthidae). comments about its domiciliary habits and its dangerousness. Physis 0, 29 (79) 405-421, 1970

Confirmation of parthenogenesis in Tityus trivittatus Kraepelin 1898 (Scorpiones, Buthidae). Journal of Arachnology 33(3): 866-869, 2005

Le veritable statut des formes du 'complexe' Tityus trivittatus Kraepelin 1898 (Scorpiones, Buthidae). Note complementaire. BOLLETTINO DEL MUSEO DI ZOOLOGIA DELL'UNIVERSITA DI TORINO: 1-4 No. 1, 1982

Karyotype conservation in 2 populations of the parthenogenetic scorpion Tityus serrulatus (Buthidae): rDNA and its associated heterochromatin are concentrated on only one chromosome. Journal of Heredity 101(4): 491-496, 2010

Redescripcion y distribucion en la Argentina deTityus trivittatus trivittatus Kraepelin 1898 (Scorpiones, Buthidae) comentarios sobre sus habitos domicilliarios y su peligrosidad. Physis B. Aires 29: 79 405-421, 1970

Tityus trivittatus in Argentina New data on distribution, parthenogenesis, synanthropy and dangerousness Scorpiones, Buthidae Tityus trivittatus en la Argentina Nuevos datos sobre distribucion, partenogenesis, sinantropia y peligrosidad Scorpiones, Buthidae. Revista del Museo Argentino de Ciencias Naturales Bernardino Rivadavia e Instituto Nacional de Investigacion de las Ciencias Naturales Publicacion de Extencion Cultural y Didactica, 24: 1-24, 1997

Primeros registros de Tityus trivittatus Kraepelin (Scorpiones, Buthidae) en el oeste Argentino. Multequina 11: 75-78, 2002

Comportamiento de relacion madre-cria de Tityus trivittatus Kraepelin (Scorpiones, Buthidae). Boletin de la Sociedad de Biologia de Concepcion, 65: 9-21, 1994

Mother-young relationship behaviour of Tityus trivittatus Kraepelin (Scorpiones, Buthidae). Boletin de la Sociedad de Biologia de Concepcion 65(0): 9-21, 1994

Contribution to the systematic knowledge of scorpions belonging to the complex Tityus trivittatus Kraepelin, 1898 (Buthidae). Bulletin du Museum National d' Histoire Naturelle, A 2(3): 793-843, 1980

Contribution a la connaissance systematique des scorpions appartenant au 'complexe' Tityus trivittatus Kraepelin, 1898 (Buthidae). Bulletin du Museum National d'Histoire Naturelle Section A Zoologie Biologie et Ecologie Animales, 23: 793-843, 1980

A study on the experimental envenomation in mice with the venom of Tityus trivitattus Kraepelin 1898 (Scorpiones, Buthidae) captured in Argentina. Journal of Natural Toxins 10(2): 99-109, 2001

Escorpioes e escorpionismo no Brasil. III. TitulaYao por meio de camundongos, das peYohas de Tityus costatus (Karsch), Tityus trivittatus Kraepelin, 1898 e Bothriurus bonariensis (Koch), 1842. 1957

The life history of Tityus fuhrmanni Kraepelin (Scorpiones, Buthidae). Biogeographica (Paris) 76(3): 119-124, 2000