The behavior of Gammarus aequicauda (crustacea, amphipoda) during predation on chironomid larvae: Sex differences and changes in precopulatory mate‐guarding state

2021 ◽  
Vol 335 (6) ◽  
pp. 572-582
Author(s):  
Nickolai Shadrin ◽  
Vladimir Yakovenko ◽  
Elena Anufriieva
Keyword(s):  
Sex Differences ◽  
Mate Guarding ◽  
Chironomid Larvae ◽  
Precopulatory Mate Guarding ◽  
Gammarus Aequicauda

Intersexual and Intrasexual Competition and Their Relation to Jealousy

2019 ◽  
pp. 214-236
Author(s):  
Abraham P. Buunk ◽  
Karlijn Massar ◽  
Pieternel Dijkstra ◽  
Ana María Fernández
Keyword(s):  
Sex Differences ◽  
Individual Differences ◽  
Menstrual Cycle ◽  
Attachment Styles ◽  
Mate Guarding ◽  
Intrasexual Competition ◽  
Online Infidelity ◽  
Intersexual Competition

This chapter discusses sex differences in intersexual competition and describes particularly the consequences of such competition for conflict between the sexes, as well as for sex differences in mate guarding and, relatedly, in the types of infidelity that evoke jealousy, including online infidelity. It also discusses individual differences in jealousy as related to attachment styles and describes the effects of height, hormones, and the menstrual cycle on jealousy. Next, the chapter moves on to intrasexual competition and discusses, among other topics, intrasexual competition among men and among women, the role of sex differences in rival characteristics in evoking jealousy, the role of attachment styles and hormones, and individual differences in intrasexual competitiveness.

Recently mated males of a lek-mating insect intensify precopulatory mate guarding under male competition

2016 ◽  
Vol 117 ◽  
pp. 21-34 ◽  
Author(s):  
Alicia Jarrige ◽  
Alexandra Kassis ◽  
Tim Schmoll ◽  
Marlène Goubault
Keyword(s):  
Mate Guarding ◽  
Male Competition ◽  
Precopulatory Mate Guarding ◽  
Lek Mating

The effects of body size, ownership and sex-ratio on the precopulatory mate guarding of Caprella penantis (Crustacea: Amphipoda)

2009 ◽  
Vol 90 (2) ◽  
pp. 275-279 ◽  
Author(s):  
Fumio Takeshita ◽  
Yasuhisa Henmi
Keyword(s):  
Body Size ◽  
Sex Ratio ◽  
Laboratory Experiments ◽  
Mate Guarding ◽  
Operational Sex Ratio ◽  
Receptive Female ◽  
Type I ◽  
Male Body ◽  
Precopulatory Mate Guarding ◽  
Secondary Factor

Precopulatory mate guarding behaviour of the skeleton shrimp Caprella penantis is described. Moreover, the effects of body size, ownership and sex-ratio on mate guarding were examined experimentally in the laboratory. In the field population, the operational sex-ratio was male-biased. Guarding pairs, which were collected from the field, continued guarding for an average of 350 minutes in the laboratory, indicating that the normal guarding duration is approximately 10 hours. In this species, two guarding types were found: Type O and Type I-like. In Type O guarding, the male would fold the female into a horseshoe shape, whilst the male held the female parallel to him in Type I-like guarding. In the laboratory experiments, male body size was the most important factor affecting competition for a receptive female; ownership was the secondary factor. Guarding duration was prolonged when the sex-ratio was male-biased. Thus, the precopulatory mate guarding behaviour of C. penantis is influenced by several factors, such as body size, ownership and sex-ratio.

The mate-guarding behaviour of male kokanee oncorhynchus nerka

Behaviour ◽  
2002 ◽  
Vol 139 (4) ◽  
pp. 507-528 ◽  
Author(s):  
Yolanda Morbey
Keyword(s):  
Competitive Advantage ◽  
Oncorhynchus Nerka ◽  
Mate Guarding ◽  
Precopulatory Mate Guarding ◽  
Habitat Features ◽  
Egg Deposition ◽  
Random Pairing ◽  
Optimal Duration ◽  
Males And Females ◽  
Game Context

AbstractThe patterns of mate-guarding in kokanee (non-anadromous Oncorhynchus nerka) are analysed and discussed in relation to existing theory of precopulatory mate-guarding. Male salmon typically guard females prior to spawning events and aggressively exclude other males from their vicinity. Mate-guarding is thought to increase the likelihood of releasing gametes before other males (during a spawning event) and fertilising the greatest proportion of the clutch. The optimal duration of mate-guarding can be considered in a game context because the mate-guarding behaviour of other males influences the probability of finding an unguarded female if a male leaves a female in search of other opportunities. At the Meadow Creek spawning channel, males guarded females, searched for unguarded females, or joined groups of non-breeding males and females. In accordance with mate-guarding theory, males continued to guard the same females after presumed spawning events (but during her egg deposition period) more often than expected on the basis of random pairing. This prevented some males from ever pairing with females. Gaining familiarity with habitat features may confer a competitive advantage to mate-guarding males and may favour prolonged mate-guarding. Because of the importance of finding nesting females quickly, before other males, unpaired males may wait for pairing opportunities rather than occupy distant satellite positions to breeding pairs.

First come, first served: precopulatory mate-guarding behavior and male–male contests by a hymenopteran saproxylic parasitoid

2019 ◽  
Vol 106 (5-6) ◽  
Author(s):  
Kazumu Kuramitsu ◽  
Thitaree Yooboon ◽  
Morihiko Tomatsuri ◽  
Hideo Yamada ◽  
Tomoyuki Yokoi
Keyword(s):  
Mate Guarding ◽  
Precopulatory Mate Guarding ◽  
Guarding Behavior ◽  
Male Contests
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