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Keywords: Sperm competition
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Journal Articles
J Exp Biol (2023) 226 (1): jeb244712.
Published: 13 January 2023
...-newtonian fluids Ovarian fluid Sperm competition Viscoelasticity Natural Sciences and Engineering Research Council of Canada http://dx.doi.org/10.13039/501100000038 Canada Foundation for Innovation http://dx.doi.org/10.13039/501100001805 Research and Development...
Includes: Supplementary data
Journal Articles
J Exp Biol (2019) 222 (17): jeb200675.
Published: 10 September 2019
.... Antioxidants Coccidia Oxidative stress Passer domesticus Reproductive success Soma/germline trade-off Sperm competition Male reproductive success is a key fitness component that reflects a male's mating and fertilization success ( Trivers, 1972 ; Birkhead and Møller, 1998 ; Fitzpatrick...
Includes: Supplementary data
Journal Articles
J Exp Biol (2018) 221 (14): jeb175976.
Published: 30 July 2018
...Federica Poli; Lisa Locatello; Maria B. Rasotto ABSTRACT The most common adaptation to sperm competition in males is represented by an increase in the sperm number and/or quality released at mating, to raise their probability of egg fertilization. However, rapidly mounting evidence highlights...
Includes: Supplementary data
Journal Articles
J Exp Biol (2018) 221 (8): jeb173427.
Published: 20 April 2018
... no detectable effect on copulation duration or on the outcome of sperm competition. Surgical manipulation of the end-plate, a genital sclerite that covers the ostium of the median lobe (the non-intromittent section of the aedeagus), resulted in near-complete failure of males to achieve copulation. Our...
Journal Articles
J Exp Biol (2017) 220 (14): 2577–2588.
Published: 15 July 2017
... sperm velocity of low-ranked house sparrows. Social dominance Soma/germline trade-off Sperm competition Sperm velocity Pollutants Reactive oxygen species (ROS) are metabolic by-products that cause random cellular damage, which leads to cell death, ageing, degenerative diseases...
Includes: Supplementary data
Journal Articles
J Exp Biol (2017) 220 (12): 2210–2217.
Published: 15 June 2017
... Reproductive strategy Sperm competition Cryptic female choice Across a wide range of taxa, males often exhibit different tactics to increase their reproductive success: hereafter, alternative reproductive tactics (ARTs; reviewed in Oliveira et al., 2008 ). This is especially common in teleost fishes...
Journal Articles
J Exp Biol (2017) 220 (9): 1568–1577.
Published: 1 May 2017
... and sexual selection . Proc. Natl. Acad. Sci. USA   76 , 2480 - 2484 . 10.1073/pnas.76.5.2480 Charnov , E. L. ( 1982 ). The Theory of Sex Allocation . Princeton, NJ : Princeton University Press . Charnov , E. L. ( 1996 ). Sperm competition and sex allocation in simultaneous...
Includes: Supplementary data
Journal Articles
J Exp Biol (2016) 219 (10): 1458–1466.
Published: 15 May 2016
.... , Maechler , M. , Bolker , B. and Walker , S. ( 2015 ). Fitting linear mixed-effects models using lme4 . J. Stat. Soft.   67 , 1 - 48 .  10.18637/jss.v067.i01 Birkhead , T. and Moller , A. ed. ( 1998 ). External fertilizers . In Sperm Competition and Sexual Selection , pp...
Journal Articles
J Exp Biol (2016) 219 (9): 1363–1368.
Published: 1 May 2016
... status-related changes of sperm quality resulting from sexual abstinence. Moreover, released from territory and female guarding, harem males were expected to show a reduction in somatic costs. On the basis of sperm competition models, we predicted a higher resource investment in the ejaculate...
Journal Articles
J Exp Biol (2007) 210 (21): 3720–3727.
Published: 1 November 2007
... to polyspermy could have evolved in response to sperm limitation (insufficient sperm). * Author for correspondence (e-mail: d.marshall1@uq.edu.au ) 17 7 2007 © The Company of Biologists Limited 2007 2007 fertilisation polyspermy sperm competition The classic view of sexual...
Journal Articles
J Exp Biol (2007) 210 (3): 432–437.
Published: 1 February 2007
... the pouch, whereupon the spermatozoa encounter seawater. These observations also support the view, indirectly inferred in previous publications, that sperm competition in seahorses is not only non-existent but impossible. * Authors for correspondence (e-mail: katrien.vanlook@btopenworld.com...
Journal Articles
J Exp Biol (1998) 201 (15): 2313–2319.
Published: 1 August 1998
... frequent. This latter effect continued for at least 1 h, provided that the mucus extract remained in the saline bath. The minimum effective dosage was less than the 2.2 mg of mucus transferred with the dart. Sperm competition is expected in Helix aspersa since multiple matings occur before eggs are laid...