Dominance Relationship and Mating Behavior of Domestic Cocks: A Model to Study Mate-Guarding and Sperm Competition in Birds

The Condor ◽  
1988 ◽  
Vol 90 (3) ◽  
pp. 697 ◽  
Author(s):  
Kimberly M. Cheng ◽  
Jeffrey T. Burns
Keyword(s):  
Sperm Competition ◽  
Mating Behavior ◽  
Mate Guarding ◽  
Dominance Relationship

scholarly journals Evolutionary insight from a humble fly: sperm competition and the yellow dungfly

2020 ◽  
Vol 375 (1813) ◽  
pp. 20200062
Author(s):  
Leigh W. Simmons ◽  
Geoff A. Parker ◽  
David J. Hosken
Keyword(s):  
Sexual Selection ◽  
Sperm Competition ◽  
Paradigm Shift ◽  
Mate Guarding ◽  
Reproductive Behaviour ◽  
Costs And Benefits ◽  
Theme Issue ◽  
Male And Female ◽  
Sexual Selection Theory ◽  
The 1960S

Studies of the yellow dungfly in the 1960s provided one of the first quantitative demonstrations of the costs and benefits associated with male and female reproductive behaviour. These studies advanced appreciation of sexual selection as a significant evolutionary mechanism and contributed to the 1970s paradigm shift toward individual selectionist thinking. Three behaviours in particular led to the realization that sexual selection can continue during and after mating: (i) female receptivity to remating, (ii) sperm displacement and (iii) post-copulatory mate guarding. These behaviours either generate, or are adaptations to sperm competition, cryptic female choice and sexual conflict. Here we review this body of work, and its contribution to the development of post-copulatory sexual selection theory. This article is part of the theme issue ‘Fifty years of sperm competition’.

Multiple Matings and Sperm Competition

2020 ◽  
pp. 332-363
Author(s):  
Carola Becker ◽  
Raymond T. Bauer
Keyword(s):  
Genetic Diversity ◽  
Sperm Competition ◽  
Mate Guarding ◽  
Sperm Storage ◽  
Internal Fertilization ◽  
Multiple Matings ◽  
Storage Organs ◽  
Anatomical Adaptations ◽  
Multi Level ◽  
Molecular Aspects

In polyandrous mating systems, females mate multiple times and males have evolved adaptations for sperm competition which increase the number and fitness of their offspring. Mate guarding is a widespread monopolization strategy in groups where female receptivity is temporally restricted and often associated with the molt. Precopulatory guarding occurs in branchipods, copepods, peracarids and decapods. Postcopulatory guarding is notable in numerous brachyurans with males protecting females until her exoskeleton has hardened. During copulation, male success in fertilization depends on an effective sperm transfer mechanism, the precise placement of ejaculates closest to where female gametes are fertilized. Male copulatory systems are highly diverse and strongly adapted to these tasks, especially the structures that interact with the female genital ducts. The elaborate tips of brachyuran gonopods are supposed to act in the displacement, possibly even in the removal of rival sperm masses; however, sperm removal is only evident in crayfish: males eat spermatophores previously deposited by other males. During copulation of several crustacean groups, males transfer secretions that harden and form a sealant. These sperm plugs, plaques and gel layers may protect their own sperm, prevent remating or seal off rival sperm from the site of fertilization. Several groups of isopods and decapods have internal insemination, elaborate sperm storage organs and some exhibit internal fertilization. The intensity of sperm competition increases with the latency between the processes of insemination and fertilization. This chapter gives on overview on mate guarding, male sealants and the anatomical adaptations to sperm competition in crustaceans. We also briefly discuss the consequences of multiple matings for the genetic diversity of broods, i.e., single vs. multiple paternities. There is still a lack of data for many crustacean groups. Moreover, it is often hard to assess how successful a male strategy to ensure paternity actually is as many studies focus on either the behavioral, anatomical, or molecular aspects, while comprehensive multi-level studies on crustacean sperm competition are virtually absent from the literature.

Copulation calls in wild Mueller’s gibbons (Hylobates muelleri)

2019 ◽  
Vol 20 (2) ◽  
pp. 362-374
Author(s):  
Yoichi Inoue ◽  
Waidi Sinun ◽  
Kazuo Okanoya
Keyword(s):  
Mating System ◽  
Social Organization ◽  
Sperm Competition ◽  
Mate Guarding ◽  
Conservation Area ◽  
Mating Activity ◽  
Selective Pressures ◽  
Female Promiscuity ◽  
Vocal Signals ◽  
The Relationship

Abstract Mating activity of a wild Mueller’s gibbon group (Hylobates muelleri) was observed in the Danum Valley Conservation Area, Sabah, Malaysia. The purpose of this study was to investigate the function of copulation calls in gibbons. The female emitted copulation calls at the time of intromission and pelvic thrusting. Copulation calls were composed of two notes and one of them was sung only while mating. Approximately half of copulation calls were sung near the range boundary. Mating with copulation calls sometimes occurred while singing. According to the model that female copulation calls have evolved under the selective pressures of risk of infanticide and sperm competition, copulation calls should be rare in species with little female promiscuity. As gibbons usually live in pair-living social organization and have a monogamous mating system, no vocal signals by female gibbons are considered to be needed. However, clear copulation calls were emitted by the female. It suggests that the relationship between paired gibbons is unstable. Copulation calls by the female Mueller’s gibbon may function to increase mate guarding and strengthen the pair bond.

scholarly journals Sperm Competition in Humans: Mate Guarding Behavior Negatively Correlates with Ejaculate Quality

PLoS ONE ◽  
2014 ◽  
Vol 9 (9) ◽  
pp. e108099 ◽  
Author(s):  
Samantha Leivers ◽  
Gillian Rhodes ◽  
Leigh W. Simmons
Keyword(s):  
Sperm Competition ◽  
Mate Guarding ◽  
Guarding Behavior

Perceived risk of sperm competition affects sperm investment in a mate-guarding amphipod

2014 ◽  
Vol 87 ◽  
pp. 231-238 ◽  
Author(s):  
Katherine L. Arundell ◽  
Nina Wedell ◽  
Alison M. Dunn
Keyword(s):  
Sperm Competition ◽  
Perceived Risk ◽  
Mate Guarding

Determinants of Male Mating Success in the Temperate Crayfish Orconectes Rusticus: Chela Size and Sperm Competition

Behaviour ◽  
1990 ◽  
Vol 115 (1-2) ◽  
pp. 100-113 ◽  
Author(s):  
W. Andy Snedden
Keyword(s):  
Sexual Selection ◽  
Sperm Competition ◽  
Mating Success ◽  
Mate Guarding ◽  
Male Mating ◽  
Male Mating Success ◽  
Orconectes Rusticus ◽  
Adaptive Function ◽  
Selection For ◽  
Copulatory Position

AbstractThe large chelipeds of male Orconectes rusticus have an adaptive function related to inter-male competition for mates. Large clawed males dominate over smaller clawed, but otherwise physically similar, competitors. Additionally, males with large chela are better able to secure, and more quickly orient, females into the copulatory position. Large clawed males also copulate for longer periods than smaller clawed competitors. The significance of copulation duration is unclear, but is likely related to mate guarding. Sexual selection for increased cheliped size in 0. rusticus has been more intense on males than females. Sperm of the second male to inseminate a dually mated female takes precedence over that of the previous male. The paternity attributable to the second male was determined as approximately 92 % .

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