Cytogenetic heterogeneity in common haplogyne spiders from Argentina (Arachnida, Araneae)

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...

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Autores principales:	Rodríguez Gil, S.G., Mola, L.M., Papeschi, A.G., Scioscia, C.L.
Formato:	JOUR
Materias:	Cytogenetics Haplogyne Meiosis Arachnida Araneae Ariadna Ariadna boesenbergii Dysdera crocata Dysdera crocota Dysderidae Filistatidae Haplogynae Invertebrata Kukulcania hibernalis Scytodes Scytodes globula Scytodidae Segestriidae
Acceso en línea:	http://hdl.handle.net/20.500.12110/paper_01618202_v30_n1_p47_RodriguezGil
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	todo:paper_01618202_v30_n1_p47_RodriguezGil
record_format	dspace
spelling	todo:paper_01618202_v30_n1_p47_RodriguezGil2023-10-03T15:01:23Z Cytogenetic heterogeneity in common haplogyne spiders from Argentina (Arachnida, Araneae) Rodríguez Gil, S.G. Mola, L.M. Papeschi, A.G. Scioscia, C.L. 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 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. Fil:Rodríguez Gil, S.G. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Mola, L.M. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Papeschi, A.G. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Scioscia, C.L. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_01618202_v30_n1_p47_RodriguezGil
institution	Universidad de Buenos Aires
institution_str	I-28
repository_str	R-134
collection	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic	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
spellingShingle	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 Rodríguez Gil, S.G. Mola, L.M. Papeschi, A.G. Scioscia, C.L. Cytogenetic heterogeneity in common haplogyne spiders from Argentina (Arachnida, Araneae)
topic_facet	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
description	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.
format	JOUR
author	Rodríguez Gil, S.G. Mola, L.M. Papeschi, A.G. Scioscia, C.L.
author_facet	Rodríguez Gil, S.G. Mola, L.M. Papeschi, A.G. Scioscia, C.L.
author_sort	Rodríguez Gil, S.G.
title	Cytogenetic heterogeneity in common haplogyne spiders from Argentina (Arachnida, Araneae)
title_short	Cytogenetic heterogeneity in common haplogyne spiders from Argentina (Arachnida, Araneae)
title_full	Cytogenetic heterogeneity in common haplogyne spiders from Argentina (Arachnida, Araneae)
title_fullStr	Cytogenetic heterogeneity in common haplogyne spiders from Argentina (Arachnida, Araneae)
title_full_unstemmed	Cytogenetic heterogeneity in common haplogyne spiders from Argentina (Arachnida, Araneae)
title_sort	cytogenetic heterogeneity in common haplogyne spiders from argentina (arachnida, araneae)
url	http://hdl.handle.net/20.500.12110/paper_01618202_v30_n1_p47_RodriguezGil
work_keys_str_mv	AT rodriguezgilsg cytogeneticheterogeneityincommonhaplogynespidersfromargentinaarachnidaaraneae AT molalm cytogeneticheterogeneityincommonhaplogynespidersfromargentinaarachnidaaraneae AT papeschiag cytogeneticheterogeneityincommonhaplogynespidersfromargentinaarachnidaaraneae AT sciosciacl cytogeneticheterogeneityincommonhaplogynespidersfromargentinaarachnidaaraneae
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Cytogenetic heterogeneity in common haplogyne spiders from Argentina (Arachnida, Araneae)

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