Abstract
A consequence of multiple mating by females can be that the sperm of two or more males directly compete for the fertilisation of ova inside the female reproductive tract. Selection through sperm-competition favours males that protect their sperm against that of rivals and strategically allocate their sperm, e.g., according to the mating status of the female and the morphology of the spermatheca. In the majority of spiders, we encounter the otherwise unusual situation that females possess two independent insemination ducts, both ending in their own sperm storage organ, the spermatheca. Males have paired mating organs, but generally can only fill one spermatheca at a time. We investigated whether males of the African golden orb-web spider Nephila madagascariensis can prevent rival males from mating into the same spermatheca and whether the mating status of the female and/or the spermatheca causes differences in male mating behaviour. There was no significant difference in the duration of copulations into unused spermathecae of virgin and mated females. We found that copulations into previously inseminated spermathecae were generally possible, but shorter than copulations into the unused side of mated females or with virgins. Thus, male N. madagascariensis may have an advantage when they mate with virgins, but cannot prevent future males from mating. However, in rare instances, parts of the male genitals can completely obstruct a female genital opening.
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References
Andrade MCB (1996) Sexual selection for male sacrifice in the Australian redback spider. Science 271:70–72
Andrade MCB, Banta EM (2002) Value of male remating and functional sterility in redback spiders. Anim Behav 63:857–870
Berendonck B (2003) Reproductive strategies in Latrodectus revivensis (Araneae: Theridiidae): functional morphology and sexual cannibalism. PhD Thesis, Heinrich-Heine Universität
Elgar MA, Schneider JM, Herberstein ME (2000) Female control of paternity in the sexually cannibalistic spider Argiope keyserlingi. Proc R Soc Lond B 267:2439–2443
Foelix RF (1996) Biology of spiders, 2nd edn. Oxford University Press, Oxford
Foellmer MW, Fairbairn DJ (2003) Spontaneous male death during copulation in an orb-weaving spider. Proc R Soc Lond B 270:183–185
Gomendio M, Harcourt AH, Roldán ERS (1998) Sperm competition in mammals. In: Birkhead TR (ed) Sperm competition and sexual selection. Academic Press, San Diego, pp 667–752
Hellriegel B, Ward PI (1998) Complex female reproductive tract morphology: its possible use in postcopulatory female choice. J Theor Biol 190:179–186
Knoflach B, Benjamin SP (2003) Mating without sexual cannibalism in Tidarren sisyphoides (Araneae, Theridiidae). J Arachnol 31:445–448
Knoflach B, van Harten A (2000) Palpal loss, single palp copulation and obligatory mate consumption in Tidarren cuneolatum (Tullgren, 1910) (Araneae, Theridiidae). J Nat Hist 34:1639–1659
Knoflach B, van Harten A (2002) The genus Latrodectus (Araneae: Theridiidae) from mainland Yemen, the Socotra Archipelago and adjacent countries. Fauna Arabia 19:321–361
Levi HW (1971) The diadematus group of the orb-weavers geneus Araneus north of Mexico (Araneae: Araneidae). Bull Museum Comp Zool 141:131–179
Levi HW (1975) Mating behaviour and presence of embolus cap in male Araneidae. Proc Int Arachnol Congr 6:49–50
Levi HW (1983) The orb-weaver genera Argiope, Gea and Neogea from the Western Pacific region (Araneae: Araneidae, Argiopinae). Bull Mus Comp Zool 150:247–338
Masumoto T (1993) The effect of the copulatory plug in the funnel-web spider, Agelena limbata (Araneae: Agelenidae). J Arachnol 21:55–59
Müller GH (1985) Abgebrochene Emboli in der Vulva der ’Schwarzen Witwe’ Latrodectus geometricus C. L. Koch 1841 (Arachnida: Araneae: Theridiidae). Entomol Z 95:27–30
Parker GA (1970) Sperm competition and its evolutionary consequences in the insects. Biol Rev 45:525–567
Parker GA (1998) Sperm competition and the evolution of ejaculates: towards a theory base. In: Moller AP (ed) Sperm competition and sexual selection. Academic Press, San Diego, pp 3–54
Robinson MH, Robinson B (1980) Comparative studies of the courtship and mating behavior of tropical araneid spiders. Pac Insects Monogr 36:1–218
Sauter A, Brown MJF, Baer B, Schmid-Hempel P (2001) Males of social insects can prevent queens from multiple mating. Proc R Soc Lond B 268:1449–1454
Schneider JM, Elgar MA (2001) Sexual cannibalism and sperm competition in the golden orb-web spider Nephila plumipes (Araneoidea): female and male perspectives. Behav Ecol 12:547–552
Schneider JM, Herberstein ME, De Crespigny FC, Ramamurthy S, Elgar MA (2000) Sperm competition and small size advantage for males of the golden orb-web spider Nephila edulis. J Evol Biol 13:939–946
Schneider JM, Thomas ML, Elgar MA (2001) Ectomised conductors in the golden orb-web spider, Nephila plumipes (Araneoidea): a male adaptation to sexual conflict? Behav Ecol Sociobiol 49:410–415
Simmons LW (2001) Sperm competition and its evolutionary consequences in the insects. Princeton University Press, Princeton
Suhm M, Thaler K, Alberti G (1996) Glands in the male palpal organ and the origin of the mating plug in Amaurobius species (Araneae: Amaurobiidae). Zool Anz 234:191–199
Walker WF (1980) Sperm utilization strategies in non-social insects. Am Nat 115:780–799
Wiehle H (1967) Steckengebliebene Emboli in den Vulven von Spinnen (Arach., Araneae). Senckenbergiana Biol 48:197–202
Acknowledgements
We thank Marilyn Bodasing, Tanza Crouch and Rob Slotow for their friendly and invaluable assistance in finding, collecting and keeping the spiders in South Africa. Matjaz Kuntner kindly provided information about collecting spots. We thank the Museum Koenig in Bonn for access to the Hitachi scanning electron microscope. This study was funded by the Deutsche Forschungsgemeinschaft.
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Schneider, J.M., Fromhage, L. & Uhl, G. Copulation patterns in the golden orb-web spider Nephila madagascariensis. J Ethol 23, 51–55 (2005). https://doi.org/10.1007/s10164-004-0128-0
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DOI: https://doi.org/10.1007/s10164-004-0128-0