Multiple Mating, Sperm Utilization, and Social Evolution

1982 ◽  
Vol 119 (2) ◽  
pp. 263-281 ◽  
Author(s):  
Robert E. Page, ◽  
Robert A. Metcalf
Keyword(s):  
Social Evolution ◽  
Multiple Mating ◽  
Sperm Utilization

Sperm utilization pattern in the honeybee (Apis mellifera)

2004 ◽  
Vol 56 (5) ◽  
pp. 458-463 ◽  
Author(s):  
Helge Schlüns ◽  
Gudrun Koeniger ◽  
Nikolaus Koeniger ◽  
Robin F. A. Moritz
Keyword(s):  
Apis Mellifera ◽  
Utilization Pattern ◽  
Sperm Utilization

scholarly journals How multiple mating by females affects sexual selection

2013 ◽  
Vol 368 (1613) ◽  
pp. 20120046 ◽  
Author(s):  
Stephen M. Shuster ◽  
William R. Briggs ◽  
Patricia A. Dennis
Keyword(s):  
Sexual Selection ◽  
Life History ◽  
Multiple Mating ◽  
Female Offspring ◽  
Relative Fitness ◽  
Male Mating ◽  
Female Fitness ◽  
Offspring Number ◽  
Reproductive Life ◽  
Sperm Utilization

Multiple mating by females is widely thought to encourage post-mating sexual selection and enhance female fitness. We show that whether polyandrous mating has these effects depends on two conditions. Condition 1 is the pattern of sperm utilization by females; specifically, whether, among females, male mating number, m (i.e. the number of times a male mates with one or more females) covaries with male offspring number, o . Polyandrous mating enhances sexual selection only when males who are successful at multiple mating also sire most or all of each of their mates' offspring, i.e. only when Cov ♂ ( m , o ), is positive. Condition 2 is the pattern of female reproductive life-history; specifically, whether female mating number, m , covaries with female offspring number, o . Only semelparity does not erode sexual selection, whereas iteroparity (i.e. when Cov ♀ ( m , o ), is positive) always increases the variance in offspring numbers among females, which always decreases the intensity of sexual selection on males. To document the covariance between mating number and offspring number for each sex, it is necessary to assign progeny to all parents, as well as identify mating and non-mating individuals. To document significant fitness gains by females through iteroparity, it is necessary to determine the relative magnitudes of male as well as female contributions to the total variance in relative fitness. We show how such data can be collected, how often they are collected, and we explain the circumstances in which selection favouring multiple mating by females can be strong or weak.

Kin selection and the problem of sperm utilization in social insects

Nature ◽  
1986 ◽  
Vol 323 (6091) ◽  
pp. 798-800 ◽  
Author(s):  
Kenneth G. Ross
Keyword(s):  
Social Insects ◽  
Kin Selection ◽  
Sperm Utilization

Posthumous sperm utilization in men presenting for sperm banking: an analysis of patient choice

Andrology ◽  
2013 ◽  
Vol 1 (2) ◽  
pp. 251-255 ◽  
Author(s):  
A. W. Pastuszak ◽  
W. S. Lai ◽  
T.-C. Hsieh ◽  
L. I. Lipshultz
Keyword(s):  
Patient Choice ◽  
Sperm Banking ◽  
Sperm Utilization

The enigmatic mating behaviour and reproduction of a simultaneous hermaphrodite, the nudibranch Aeolidiella glauca (Gastropoda, Opisthobranchia)

2002 ◽  
Vol 80 (2) ◽  
pp. 260-270 ◽  
Author(s):  
Anna Karlsson ◽  
Martin Haase
Keyword(s):  
Body Surface ◽  
Egg Production ◽  
Mating Behaviour ◽  
The Body ◽  
Simultaneous Hermaphrodite ◽  
Spermatophore Transfer ◽  
Single Mating ◽  
Sperm Utilization ◽  
Very High ◽  
Considerable Damage

Hermaphroditic mating behaviour is poorly investigated and understood, especially in internally fertilized species. This study describes the mating behaviour and reproduction of the simultaneous hermaphrodite Aeolidiella glauca. Unlike other nudibranchs, A. glauca was found to transfer sperm via external spermatophores that were attached to the partner's back. Despite an elaborate courtship, the actual spermatophore transfer, which always involved two animals only, was of short duration. In most matings (88%) spermatophores were reciprocally exchanged. Shortly after transfer the ventral spermatophore cover dissolved and some sperm gathered on the epidermis. A few even penetrated epidermal cells, occasionally causing considerable damage. Most sperm, however, migrated along the body surface towards the gonopore. Migrating sperm needed 4–5 h to reach and enter the gonopore, but sperm consumption by the recipient sometimes delayed this process. Almost 30% of spermatophores fell off soon after transfer, but spermatophores from reciprocal matings and those placed in certain positions stayed on for longer. Slugs mated readily with different partners and egg production was very high. However, sperm from a single mating may not suffice to fertilize all eggs. Aeolidiella glauca's unique mating behaviour may offer ample opportunities for both sperm competition and alternative sperm utilization.

Sperm utilization in honeybees as detected by M13 DNA fingerprints

1993 ◽  
pp. 355-362 ◽  
Author(s):  
J. Corley ◽  
M. Rabinovich ◽  
M. Seigelchifer ◽  
E. Corley ◽  
J. ZorzÓpulos
Keyword(s):  
Dna Fingerprints ◽  
Sperm Utilization
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