Allohormones in<i>Lumbricus terrestris</i>? Mass spectrometry of the setal gland product indicates possible role of ubiquitin

König, Simone; Mehlich, Anna-Maria; Büllesbach, Jan; Michiels, Nico K.

doi:10.1080/07924259.2006.9652199

Cited by 6 publications

(5 citation statements)

References 16 publications

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“…As might then be expected from the resulting interlocus sexual conflicts, love darts are highly variable across species (Koene and Schulenburg 2005;Koene et al 2013) and display signatures of antagonistic coevolution and counteradaptation by sperm recipients in the form of modified reproductive organ morphologies (Koene and Schulenburg 2005; see also Davison et al 2005;Beese et al 2009;Sauer and Hausdorf 2009). Similar functions may be performed by the copulatory setae of earthworms (Koene et al 2002König et al 2006) and devices such as the stylet-like penis appendage found in Siphopteron sea slugs Lange et al 2014) and the penial gland that is everted following external sperm exchange in Deroceras land slugs (Reise 2007;Reise et al 2007;Benke et al 2010; for a recent review of "traumatic secretion transfer," see also Beese et al 2009 andLange et al 2013a). In all of these cases, however, the exact costs and benefits to donor and recipient because of either wounding or receipt of a specific (manipulative) substance under naturalistic conditions remain to be determined.…”

Section: Sexual Conflict In Hermaphroditesmentioning

confidence: 87%

Sexual Conflict in Hermaphrodites

Schärer¹,

Janicke²,

Ramm³

2014

Cold Spring Harb Perspect Biol

106

142

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Hermaphrodites combine the male and female sex functions into a single individual, either sequentially or simultaneously. This simple fact means that they exhibit both similarities and differences in the way in which they experience, and respond to, sexual conflict compared to separate-sexed organisms. Here, we focus on clarifying how sexual conflict concepts can be adapted to apply to all anisogamous sexual systems and review unique (or especially important) aspects of sexual conflict in hermaphroditic animals. These include conflicts over the timing of sex change in sequential hermaphrodites, and in simultaneous hermaphrodites, over both sex roles and the postmating manipulation of the sperm recipient by the sperm donor. Extending and applying sexual conflict thinking to hermaphrodites can identify general evolutionary principles and help explain some of the unique reproductive diversity found among animals exhibiting this widespread but to date understudied sexual system.

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Section: Sexual Conflict In Hermaphroditesmentioning

confidence: 87%

Sexual Conflict in Hermaphrodites

Schärer¹,

Janicke²,

Ramm³

2014

Cold Spring Harb Perspect Biol

106

142

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“…The absence of a spermatheca may dramatically alter criteria for sexual selection, as the sequence of sperm storage and competition is altered (Haase & Karlsson 2004). Sexual selection in hermaphrodites may be operating through sperm competition (Koenig et al 2006). However, this model is subject to the presence of a long‐term sperm storage structure (spermatheca) that is present in all pulmonate groups except Amphiboloidea.…”

Section: Discussionmentioning

confidence: 99%

Novel copulatory structures and reproductive functions in Amphiboloidea (Gastropoda, Heterobranchia, Pulmonata)

Golding

Byrne

Ponder

2008

Invertebrate Biology

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Two new families of amphiboloid gastropods were recently erected, largely due to the very distinct structural and functional configurations of their distal reproductive systems. The spermovipositors in monaulic Salinator spp. (Amphibolidae) are functionally unique in Gastropoda, and it is suggested that they perform both oviposition and sperm transfer/receipt during non-reciprocal copulation. In contrast, the remarkably complex penises in syntremous diaulic Phallomedusa spp. (Phallomedusidae) are used exclusively for sperm transfer during reciprocal copulation. The phallomedusid penis is structurally unique among gastropods because it is protruded by pivoting around a fixed point rather than extending by eversion, and bears elaborate appendages to improve traction during copulation. The complex and functionally ambiguous distal reproductive structures of Maningrida (Maningrididae) differ from other amphibolids in the arrangement and structure of their prostate and copulatory structures. Genital armature of varying complexity occurs in all amphiboloidean families. There may be a correlation between the absence of a long-term sperm storage structure (spermatheca) and the evolutionary diversification of copulatory structures in these gastropods.

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“…This piercing behaviour results in the injection of Acps into the sperm recipient [ 39 ]. One of the bioactive substances involved is ubiquitin, a small regulatory protein known for its role in tagging larger proteins for proteolysis [ 40 ]. The setal gland secretion has been demonstrated to increase the recipient’s sperm uptake and reduce its receptivity after copulation [ 38 ].…”

Section: Introductionmentioning

confidence: 99%

Alternative delivery of male accessory gland products

2014

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To increase fertilization success, males transfer accessory gland products (Acps). Several species have evolved unconventional Acps transfer modes, meaning that Acps are transferred separately from the sperm. By surveying the sperm-free Acps transfer cases, we show that these animals have evolved a common strategy to deliver Acps: they all inject Acps directly through the partner’s body wall into the hemolymph. Our review of this mode of Acps transfer reveals another striking similarity: they all transfer sperm in packages or via the skin, which may leave little room for Acps transfer via the conventional route in seminal fluid. We synthesise the knowledge about the function, and the effects in the recipients, of the Acps found in the widely diverse taxa (including earthworms, sea slugs, terrestrial snails, scorpions and salamanders) that inject these substances. Despite the clearly independent evolution of the injection devices, these animals have evolved a common alternative strategy to get their partners to accept and/or use their sperm. Most importantly, the evolution of the injection devices for the delivery of Acps highlights how the latter are pivotal for male reproductive success and, hence, strongly influence sexual selection.

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Allohormones inLumbricus terrestris? Mass spectrometry of the setal gland product indicates possible role of ubiquitin

Cited by 6 publications

References 16 publications

Sexual Conflict in Hermaphrodites

Sexual Conflict in Hermaphrodites

Novel copulatory structures and reproductive functions in Amphiboloidea (Gastropoda, Heterobranchia, Pulmonata)

Alternative delivery of male accessory gland products

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