Mating in the cold. Prolonged sperm storage provides opportunities for forced copulation by male bats during winter by Takahiro Sato, Takahiro Sato, Toshie Sugiyama, Tsuneo Sekijima

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Testing for age-dependent effects of dietary restriction on the strength of condition dependence in ejaculate traits in the guppy (Poecilia reticulata) by Jonathan P. Evans, Elizabeth J. Turnbull, Rowan A. Lymbery

Subjects: “…sperm competition…”
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Postmating sexual selection and the enigmatic jawed genitalia of Callosobruchus subinnotatus by Merel M. Van Haren, Johanna Liljestrand Rönn, Menno Schilthuizen, Göran Arnqvist

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Selection for longer lived sperm within ejaculate reduces reproductive ageing in offspring by Ghazal Alavioon, Andrea Cabrera Garcia, Magali LeChatelier, Alexei A. Maklakov, Simone Immler

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Male–female interactions drive the (un)repeatability of copula duration in an insect by Paul E. Eady, Denise V. Brown

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Nongenetic paternal effects via seminal fluid by Leigh W. Simmons, Maxine Lovegrove

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Genetic Contributions to Ectopic Sperm Cell Migration in Caenorhabditis Nematodes by Janice J. Ting, Caressa N. Tsai, Rebecca Schalkowski, Asher D. Cutter

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Using Gamma Irradiation to Predict Sperm Competition Mechanism in <i>Bagrada hilaris</i> (Burmeister) (Hemiptera: Pentatomidae): Insights for a Future Management Strategy by Chiara Elvira Mainardi, Chiara Peccerillo, Alessandra Paolini, Alessia Cemmi, René F. H. Sforza, Sergio Musmeci, Daniele Porretta, Massimo Cristofaro

“…In order to evaluate the suitability of the SIT on this pest, the mechanism of post-copulatory sperm competition was investigated. This is a polyandrous species, and it is thus important to understand whether irradiated males are able to compete with wild, e.g., non-irradiated, males for sperm competition after matings. …”
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Lack of NWC protein (c11orf74 homolog) in murine spermatogenesis results in reduced sperm competitiveness and impaired ability to fertilize egg cells in vitro. by Michal Majkowski, Agnieszka Laszkiewicz, Lukasz Sniezewski, Pawel Grzmil, Bernadetta Pawlicka, Igor Tomczyk, Martyna Michniewicz, Violetta Kapusniak, Sylwia Janik, Grzegorz Chodaczek, Malgorzata Cebrat

“…Although NWC knockout males are fertile, we further characterised their reproductive potential employing non-standard mating that better simulates the natural conditions by including sperm competition. Such an approach revealed that the sperm of knockout males fail to successfully compete with control sperm. …”
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Ethological uniqueness of a damselfly with no near relatives: the relevance of behaviour as part of biodiversity by Cordero-Rivera, A., Zhang, H.

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The impact of small groups on pre‐ and postcopulatory sexual selection in polyandrous populations by Grant C. McDonald

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How do colonial Eurasian Griffon Vultures prevent extra-pair mating? by Joan Bertran, Francesc Xavier Macià, Antoni Margalida

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Fisher vs. the Worms: Extraordinary Sex Ratios in Nematodes and the Mechanisms that Produce Them by Justin Van Goor, Diane C. Shakes, Eric S. Haag

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Atypical Centriolar Composition Correlates with Internal Fertilization in Fish by Katerina Turner, Nisha Solanki, Hassan O. Salouha, Tomer Avidor-Reiss

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Own, but not foreign seminal fluid inhibits sperm activation in a vertebrate with external fertilization. by Geir eRudolfsen, Jonathan Serrano Vaz, Ivar eFolstad

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Sexual selection affects the sizes of the mammalian prostate gland and seminal vesicles by Matthew J. ANDERSON, Alan F. DIXSON

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Paternity sharing in insects with female competition for nuptial gifts by Jessica H. Browne, Darryl T. Gwynne

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Size isn't everything by Ronald E Ellis, Qing Wei

Subjects: “…sperm competition…”
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COMP-1 promotes competitive advantage of nematode sperm by Jody M Hansen, Daniela R Chavez, Gillian M Stanfield

Subjects: “…sperm competition…”
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Different effects of mating group size as male and as female on sex allocation in a simultaneous hermaphrodite by Masami M. Tamechika, Kohei Matsuno, Satoshi Wada, Yoichi Yusa

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