Comparative female genital morphology in Stegodyphus spiders (Araneae: Eresidae)

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Comparative female genital morphology in Stegodyphus spiders (Araneae : Eresidae). / Schendel, Vanessa; Junghanns, Anja; Bilde, Trine; Uhl, Gabriele.

In: Zoologischer Anzeiger, Vol. 273, 03.2018, p. 240-249.

Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaperJournal articleResearchpeer-review

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Schendel, V, Junghanns, A, Bilde, T & Uhl, G 2018, 'Comparative female genital morphology in Stegodyphus spiders (Araneae: Eresidae)', Zoologischer Anzeiger, vol. 273, pp. 240-249. https://doi.org/10.1016/j.jcz.2018.01.011

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Schendel, Vanessa ; Junghanns, Anja ; Bilde, Trine ; Uhl, Gabriele. / Comparative female genital morphology in Stegodyphus spiders (Araneae : Eresidae). In: Zoologischer Anzeiger. 2018 ; Vol. 273. pp. 240-249.

Bibtex

@article{2c20dcc5c91341c3ab02225862e9f35f,
title = "Comparative female genital morphology in Stegodyphus spiders (Araneae: Eresidae)",
abstract = "The anatomy of the female genitalia sets the arena for sperm competition in species in which females mate multiply and store sperm. In spiders, females possess cuticular internal structures that have evolved into diverse sperm storage sites. Here, we investigate the female genital morphology of seven eresid spider species. We used X-ray micro-computed tomography for 3D reconstruction of the anatomy of the female genital system in the social Stegodyphus dumicola, S. mimosarum and S. sarasinorum, and the subsocial S lineatus, S. pacificus, S. tentoriicola as well as Eresus sandaliatus. We used histology to assess the sites of sperm storage in two selected species S. lineatus and S. dumicola. Our results show that the internal genitalia of the Stegodyphus species consist of two bilateral folds instead of closed ducts as often reported for entelegyne spiders. Along each fold, three regions are discriminable that differ in their specific morphology but are all surrounded by glandular tissue. Between species, the regions differ in shape and dimension. In virgin females, the lumina of all regions are filled with secretion. In mated females, spermatozoa were found in all three regions; however, only those sperm that are stored in the posterior region seem to become activated. Sperm found in anterior regions are embedded in a substance that might act as a mating plug. Our data suggest that the regions of the female genital tract differ in accessibility by the male as well as in their potential use for ejection and manipulation of sperm by the female. (C) 2018 Elsevier GmbH. All rights reserved.",
keywords = "Sperm storage, Genitalia, Araneae, Glandular tissue, Spermatozoa, Activation, PHOLCUS-PHALANGIOIDES FUESSLIN, SPERM STORAGE, LINEATUS ERESIDAE, 1775 PHOLCIDAE, MATING PLUGS, EVOLUTION, SOCIALITY, COURTSHIP, COMPETITION, COPULATION",
author = "Vanessa Schendel and Anja Junghanns and Trine Bilde and Gabriele Uhl",
year = "2018",
month = mar,
doi = "10.1016/j.jcz.2018.01.011",
language = "English",
volume = "273",
pages = "240--249",
journal = "Zoologischer Anzeiger",
issn = "0044-5231",
publisher = "Elsevier GmbH - Urban und Fischer",

}

RIS

TY - JOUR

T1 - Comparative female genital morphology in Stegodyphus spiders (Araneae

T2 - Eresidae)

AU - Schendel, Vanessa

AU - Junghanns, Anja

AU - Bilde, Trine

AU - Uhl, Gabriele

PY - 2018/3

Y1 - 2018/3

N2 - The anatomy of the female genitalia sets the arena for sperm competition in species in which females mate multiply and store sperm. In spiders, females possess cuticular internal structures that have evolved into diverse sperm storage sites. Here, we investigate the female genital morphology of seven eresid spider species. We used X-ray micro-computed tomography for 3D reconstruction of the anatomy of the female genital system in the social Stegodyphus dumicola, S. mimosarum and S. sarasinorum, and the subsocial S lineatus, S. pacificus, S. tentoriicola as well as Eresus sandaliatus. We used histology to assess the sites of sperm storage in two selected species S. lineatus and S. dumicola. Our results show that the internal genitalia of the Stegodyphus species consist of two bilateral folds instead of closed ducts as often reported for entelegyne spiders. Along each fold, three regions are discriminable that differ in their specific morphology but are all surrounded by glandular tissue. Between species, the regions differ in shape and dimension. In virgin females, the lumina of all regions are filled with secretion. In mated females, spermatozoa were found in all three regions; however, only those sperm that are stored in the posterior region seem to become activated. Sperm found in anterior regions are embedded in a substance that might act as a mating plug. Our data suggest that the regions of the female genital tract differ in accessibility by the male as well as in their potential use for ejection and manipulation of sperm by the female. (C) 2018 Elsevier GmbH. All rights reserved.

AB - The anatomy of the female genitalia sets the arena for sperm competition in species in which females mate multiply and store sperm. In spiders, females possess cuticular internal structures that have evolved into diverse sperm storage sites. Here, we investigate the female genital morphology of seven eresid spider species. We used X-ray micro-computed tomography for 3D reconstruction of the anatomy of the female genital system in the social Stegodyphus dumicola, S. mimosarum and S. sarasinorum, and the subsocial S lineatus, S. pacificus, S. tentoriicola as well as Eresus sandaliatus. We used histology to assess the sites of sperm storage in two selected species S. lineatus and S. dumicola. Our results show that the internal genitalia of the Stegodyphus species consist of two bilateral folds instead of closed ducts as often reported for entelegyne spiders. Along each fold, three regions are discriminable that differ in their specific morphology but are all surrounded by glandular tissue. Between species, the regions differ in shape and dimension. In virgin females, the lumina of all regions are filled with secretion. In mated females, spermatozoa were found in all three regions; however, only those sperm that are stored in the posterior region seem to become activated. Sperm found in anterior regions are embedded in a substance that might act as a mating plug. Our data suggest that the regions of the female genital tract differ in accessibility by the male as well as in their potential use for ejection and manipulation of sperm by the female. (C) 2018 Elsevier GmbH. All rights reserved.

KW - Sperm storage

KW - Genitalia

KW - Araneae

KW - Glandular tissue

KW - Spermatozoa

KW - Activation

KW - PHOLCUS-PHALANGIOIDES FUESSLIN

KW - SPERM STORAGE

KW - LINEATUS ERESIDAE

KW - 1775 PHOLCIDAE

KW - MATING PLUGS

KW - EVOLUTION

KW - SOCIALITY

KW - COURTSHIP

KW - COMPETITION

KW - COPULATION

U2 - 10.1016/j.jcz.2018.01.011

DO - 10.1016/j.jcz.2018.01.011

M3 - Journal article

VL - 273

SP - 240

EP - 249

JO - Zoologischer Anzeiger

JF - Zoologischer Anzeiger

SN - 0044-5231

ER -