Chromosome complement and meiosis in three species of the Neotropical bug genus Antiteuchus (Heteroptera, Pentatomidae, Discocephalinae)

Lanzone, Cecilia; Souza, Maria José de

doi:10.1590/s1415-47572006000100011

Cited by 14 publications

(25 citation statements)

References 22 publications

(22 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In Pentatomidae, sex chromosomes usually associate during the diffuse stage although there is much variation with respect to degree of association between X and Y among different species (Rebagliati et al, 2001;Lanzone, Souza, 2006). In the present three predator species, X and Y chromosomes associate closely to form a single heteropycnotic body during the diffuse stage as has been observed in other species of Asopinae (Montgomery, 1906;Heizer, 1950Heizer, , 1951 and Pentatomidae in general (Camacho et al, 1985;Satapathy, Patnaik, 1988, 1991.…”

Section: As 2n=14=12a+xy Andsupporting

confidence: 69%

“…The degree of decondensation of the autosomes during the diffuse stage varies among different species of Heteroptera -from species with high degree of decondensation to species whose chromosomes do not decondense at all and diffuse stage is absent (Lanzone, Souza, 2006). Andrallus spinidens and C. furcellata showed high degree of decondensation as was observed in species from different subfamilies of Pentatomidae such as Nezara viridula (Linnaeus 1758) of the subfamily Pentatominae (Camacho et Comp.…”

Section: As 2n=14=12a+xy Andmentioning

confidence: 87%

See 1 more Smart Citation

Meiotic behaviour of chromosomes in three predator species of the subfamily Asopinae (Heteroptera: Pentatomidae)

Kaur¹,

Semahagn²

2010

CCG

View full text Add to dashboard Cite

Abstract. The study of chromosome behaviour has been carried out on males of three species of the Asopinae (Pentatomidae) bugs Andrallus spinidens (Fabricius, 1787), Canthecona furcellata Wolff, 1801 and Perillus bioculatus (Fabricius, 1775) collected in India. All the species have XY sex chromosome system and 12 autosomes (2n=14=12A+XY). The general course of meiosis is fairly uniform and is typical for heteropteran species. However, the species differ in the extent of decondensation of the autosomes during the diffuse stage and the number of ring bivalents at diplotene/ diakinesis. Also, a metaphase I arrangement of chromosomes which is different from the typical Pentatomidae type has been observed in C. furcellata and P. bioculatus.

show abstract

Section: As 2n=14=12a+xy Andsupporting

confidence: 69%

Section: As 2n=14=12a+xy Andmentioning

confidence: 87%

Meiotic behaviour of chromosomes in three predator species of the subfamily Asopinae (Heteroptera: Pentatomidae)

Kaur¹,

Semahagn²

2010

CCG

View full text Add to dashboard Cite

show abstract

“…Multilobed testes are a characteristic of the Pentatomidae, but the number of lobes observed in the species analyzed herein was smaller than that typically found in the family, which is seven. In addition, the three species differed from the other 27 species of the same family and subfamily (Pentatominae) already studied by the absence of a harlequin lobe (Rebagliati et al, 2005;Lanzone and Souza, 2006;Souza et al, 2007a). The Pentatomidae Antiteuchus tripterus also showed less lobes (six) than the typical seven, but one of them was harlequin (Souza et al, 2007a).…”

Section: Discussionmentioning

confidence: 74%

“…The sex chromosome system is XX/XY, except in three species: Macropygium reticulare (X 1 X 2 Y); Rhytidolomia senilis (Neo-XY) and Thyanta calceata (X 1 X 2 Y) (Rebagliatti et al, 2005). Pentatomidae karyotypes typically lack microchromosomes (Rebagliati et al, 2005, Lanzone andSouza, 2006;Souza et al, 2007a).…”

Section: Introductionmentioning

confidence: 99%

Morphological patterns of the heteropycnotic chromatin and nucleolar material in meiosis and spermiogenesis of some Pentatomidae (Heteroptera)

et al. 2008

View full text Add to dashboard Cite

Pentatomidae is a family of Heteroptera which includes several agriculture pests that have had different aspects of their meiosis and spermiogenesis analyzed. In the present study we analyzed the morphological patterns of the heteropycnotic chromatin and the nucleolar material of Mormidea v-luteum, Oebalus poecilus and Oebalus ypsilongriseus. The three species presented multilobate testes, with three lobes in M. v-luteum and four in the Oebalus species. A karyotype with 2n = 14 chromosomes (12A + XY) was observed in the three species. Several characteristics were common to the three species, such as the absence of a testicular harlequin lobe (a lobe which produces different types of spermatozoa, previously considered a general characteristic of this family), late migration of the sex chromosomes and semi-persistence of the nucleolus. The three species also shared some characteristics regarding the patterns of the heteropycnotic chromatin and nucleolar material, but differed in others mainly related to the location of the heteropycnotic chromatin in the spermatids and the morphology and distribution of the nucleolar material at zygotene. The differences were always between species from different genera, suggesting a relationship with their genetic divergence.

show abstract

“…The sex chromosomes of T. klugi were univalent and pseudobivalent at metaphase I and were predominantly univalent at metaphase II. The sex chromosomes appeared as univalents at metaphase I of the Antiteuchus species of heteropterans, while in metaphase II they were pseudobivalents (Lanzone and Souza, 2006). Nevertheless, a pseudobivalent XY was observed in both the first and second meiotic divisions in the Heteroptera Graphosoma italicum (González-García et al 1996).…”

Section: And Male Triatoma Klugi Had 20 Autosomes and Two Sex Chromosmentioning

confidence: 95%

Spermatogenesis and nucleolar activity in Triatoma klugi (triatomine, Heteroptera)

2008

View full text Add to dashboard Cite

Triatoma klugi is a Chagas disease vector in the Rio Grande do Sul State. Triatominae chromosomes are holocentric and sex chromosomes segregation is post-reductional. In this paper we describe the karyotype of male T. klugi and a meiotic analysis including the nucleolar behavior during spermatogenesis. Testis cells were analyzed after lactoacetic orcein and silver nitrate staining. Two autosomes and the heterochromosomes presented nucleolar activity (Ag-NORs) during diplotene-diakinesis. The analysis of metaphase I and II revealed a karyotype with 2n = 20+XY. In metaphase I a prominent nucleolar mass was observed in the cell periphery and small silver grains were detected in metaphase II. During anaphase, the chromosomes segregated in parallel and a typical holocentric late migration behavior was observed. The restoration of the nucleolus was an important feature in this phase. During telophase nucleolar masses persisted and in early spermiogenesis the spermatids presented a small peripheral mass until elongation. The present study is a contribution to the study of chromatin behavior and nucleolar persistence in meiosis.

show abstract

Chromosome complement and meiosis in three species of the Neotropical bug genus Antiteuchus (Heteroptera, Pentatomidae, Discocephalinae)

Cited by 14 publications

References 22 publications

Meiotic behaviour of chromosomes in three predator species of the subfamily Asopinae (Heteroptera: Pentatomidae)

Meiotic behaviour of chromosomes in three predator species of the subfamily Asopinae (Heteroptera: Pentatomidae)

Morphological patterns of the heteropycnotic chromatin and nucleolar material in meiosis and spermiogenesis of some Pentatomidae (Heteroptera)

Spermatogenesis and nucleolar activity in Triatoma klugi (triatomine, Heteroptera)

Contact Info

Product

Resources

About