Abstract:
The spermatogenesis of four species of haplogyne spiders from Argentina is analyzed. Dysdera crocota (Dysderidae) (n = 5 + X0) has holokinetic chromosomes, achiasmatic male meiosis and a post-reductional division of the sex chromosome. Ariadna boesenbergii (Segestriidae) (n = 4 + X0) also possesses holokinetic chromosomes, but meiosis is chiasmatic and the X chromosome divides pre-reductionally. Kukulcania hibernalis (Filistatidae) (n = 11 + X1X20) and Scytodes globula (Scytodidae) (n = 6 + X0) have metacentric and submetacentric chromosomes, chiasmatic meiosis and the sex chromosomes divide pre-reductionally. Kukulcania hibernalis possesses a bimodal karyotype and a particular chromatin coiling during prophase I, while Scytodes globula has striking proximal localization of chiasmata. These results show that Haplogynae present high cytogenetic heterogeneity: species with holokinetic chromosomes as well as species with monocentric chromosomes (metacentric and submetacentric), and species with low diploid numbers, achiasmatic meiosis and proximal chiasma localization.
Registro:
Documento: |
Artículo
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Título: | Cytogenetic heterogeneity in common haplogyne spiders from Argentina (Arachnida, Araneae) |
Autor: | Rodríguez Gil, S.G.; Mola, L.M.; Papeschi, A.G.; Scioscia, C.L. |
Filiación: | Ctro. de Invest. Geneticas (CIGEN), Inst. Fitotecnico Santa C., Casilla de Correos 4, B1836AML, Llavallol, Buenos Aires, Argentina Depto. de Ciencias Biológicas, Fac. de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Intendente Guiraldes y Costanera N., C1428EHA, Cd. Auton. de Buenos Aires, Argentina División Aracnología, Museo Argentino de Cie. Nat. B., Av. Angel Gallardo 470, C1405DJR, Buenos Aires, Argentina
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Palabras clave: | Cytogenetics; Haplogyne; Meiosis; Arachnida; Araneae; Ariadna; Ariadna boesenbergii; Dysdera crocata; Dysdera crocota; Dysderidae; Filistatidae; Haplogynae; Invertebrata; Kukulcania hibernalis; Kukulcania hibernalis; Scytodes; Scytodes globula; Scytodidae; Segestriidae |
Año: | 2002
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Volumen: | 30
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Número: | 1
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Página de inicio: | 47
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Página de fin: | 56
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DOI: |
http://dx.doi.org/10.1636/0161-8202(2002)030[0047:CHICHS]2.0.CO;2 |
Título revista: | Journal of Arachnology
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Título revista abreviado: | J. Arachnol.
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ISSN: | 01618202
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Registro: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_01618202_v30_n1_p47_RodriguezGil |
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Citas:
---------- APA ----------
Rodríguez Gil, S.G., Mola, L.M., Papeschi, A.G. & Scioscia, C.L.
(2002)
. Cytogenetic heterogeneity in common haplogyne spiders from Argentina (Arachnida, Araneae). Journal of Arachnology, 30(1), 47-56.
http://dx.doi.org/10.1636/0161-8202(2002)030[0047:CHICHS]2.0.CO;2---------- CHICAGO ----------
Rodríguez Gil, S.G., Mola, L.M., Papeschi, A.G., Scioscia, C.L.
"Cytogenetic heterogeneity in common haplogyne spiders from Argentina (Arachnida, Araneae)"
. Journal of Arachnology 30, no. 1
(2002) : 47-56.
http://dx.doi.org/10.1636/0161-8202(2002)030[0047:CHICHS]2.0.CO;2---------- MLA ----------
Rodríguez Gil, S.G., Mola, L.M., Papeschi, A.G., Scioscia, C.L.
"Cytogenetic heterogeneity in common haplogyne spiders from Argentina (Arachnida, Araneae)"
. Journal of Arachnology, vol. 30, no. 1, 2002, pp. 47-56.
http://dx.doi.org/10.1636/0161-8202(2002)030[0047:CHICHS]2.0.CO;2---------- VANCOUVER ----------
Rodríguez Gil, S.G., Mola, L.M., Papeschi, A.G., Scioscia, C.L. Cytogenetic heterogeneity in common haplogyne spiders from Argentina (Arachnida, Araneae). J. Arachnol. 2002;30(1):47-56.
http://dx.doi.org/10.1636/0161-8202(2002)030[0047:CHICHS]2.0.CO;2