Current Sperm Competition Determines Sperm Allocation in a Tephritid Fruit Fly

Ethology ◽  
2015 ◽  
Vol 121 (5) ◽  
pp. 451-461 ◽  
Author(s):  
Solana Abraham ◽  
M. Teresa Vera ◽  
Diana Pérez-Staples
Keyword(s):  
Sperm Competition ◽  
Fruit Fly ◽  
Sperm Allocation

scholarly journals Sperm competition games: optimal sperm allocation in response to the size of competing ejaculates

2006 ◽  
Vol 274 (1607) ◽  
pp. 209-217 ◽  
Author(s):  
Leif Engqvist ◽  
Klaus Reinhold
Keyword(s):  
Sperm Competition ◽  
Negative Correlation ◽  
Competitive Ability ◽  
Sperm Storage ◽  
Competition Intensity ◽  
Mating Partner ◽  
Storage Model ◽  
Sperm Allocation ◽  
Competition Theory ◽  
Different Levels

Sperm competition theory predicts that when males are certain of sperm competition, they should decrease sperm investment in matings with an increasing number of competing ejaculates. How males should allocate sperm when competing with differently sized ejaculates, however, has not yet been examined. Here, we report the outcomes of two models assuming variation in males' sperm reserves and males being faced with different amounts of competing sperm. In the first ‘spawning model’, two males compete instantaneously and both are able to assess the sperm competitive ability of each other. In the second ‘sperm storage model’, males are sequentially confronted with situations involving different levels of sperm competition, for instance different amounts of sperm already stored by the female mating partner. In both of the models, we found that optimal sperm allocation will strongly depend on the size of the male's sperm reserve. Males should always invest maximally in competition with other males that are equally strong competitors. That is, for males with small sperm reserves, our model predicts a negative correlation between sperm allocation and sperm competition intensity, whereas for males with large sperm reserves, this correlation is predicted to be positive.

Sperm allocation and cost of mating in a tropical tephritid fruit fly

2006 ◽  
Vol 52 (8) ◽  
pp. 839-845 ◽  
Author(s):  
Diana Perez-Staples ◽  
Martín Aluja
Keyword(s):  
Fruit Fly ◽  
Sperm Allocation

Relationship between Sperm Competition and Copulation Duration in the Mediterranean Fruit Fly (Diptera: Tephritidae)

1988 ◽  
Vol 81 (3) ◽  
pp. 498-502 ◽  
Author(s):  
Stephen H. Saul ◽  
Steven Y. T. Tam ◽  
Donald O. McInnis
Keyword(s):  
Sperm Competition ◽  
Fruit Fly ◽  
Mediterranean Fruit Fly ◽  
Copulation Duration ◽  
The Mediterranean

Strategic sperm allocation in response to perceived sperm competition risk in a lekking insect

2015 ◽  
Vol 109 ◽  
pp. 81-87 ◽  
Author(s):  
Alicia Jarrige ◽  
Dennis Riemann ◽  
Marlène Goubault ◽  
Tim Schmoll
Keyword(s):  
Sperm Competition ◽  
Sperm Allocation ◽  
Sperm Competition Risk

scholarly journals THE EVOLUTION OF SPERM-ALLOCATION STRATEGIES AND THE DEGREE OF SPERM COMPETITION

Evolution ◽  
2005 ◽  
Vol 59 (3) ◽  
pp. 492-499 ◽  
Author(s):  
Paul D. Williams ◽  
Troy Day ◽  
Erin Cameron
Keyword(s):  
Sperm Competition ◽  
Sperm Allocation ◽  
Allocation Strategies

scholarly journals Sperm competition games: the risk model can generate higher sperm allocation to virgin females

2007 ◽  
Vol 20 (2) ◽  
pp. 767-779 ◽  
Author(s):  
M. A. BALL ◽  
G. A. PARKER
Keyword(s):  
Sperm Competition ◽  
Risk Model ◽  
Sperm Allocation

Information about sperm competition and the economics of sperm allocation

2001 ◽  
pp. 221-244
Author(s):  
Geoffrey A. Parker ◽  
Mike A. Ball
Keyword(s):  
Sperm Competition ◽  
Sperm Allocation

THE EVOLUTION OF SPERM-ALLOCATION STRATEGIES AND THE DEGREE OF SPERM COMPETITION

Evolution ◽  
2005 ◽  
Vol 59 (3) ◽  
pp. 492 ◽  
Author(s):  
Paul D. Williams ◽  
Troy Day ◽  
Erin Cameron
Keyword(s):  
Sperm Competition ◽  
Sperm Allocation ◽  
Allocation Strategies

Does size always matter? Mate choice and sperm allocation in Panulirus guttatus, a highly sedentary, habitat-specialist spiny lobster

Behaviour ◽  
2011 ◽  
Vol 148 (11-13) ◽  
pp. 1329-1354 ◽  
Author(s):  
Erika Magallón-Gayón ◽  
Patricia Briones-Fourzán ◽  
Enrique Lozano-Álvarez
Keyword(s):  
Mate Choice ◽  
Sperm Competition ◽  
Spiny Lobster ◽  
Recovery Period ◽  
Sympatric Species ◽  
Mating Strategies ◽  
Female Size ◽  
Sperm Allocation ◽  
Panulirus Guttatus ◽  
Spiny Lobsters

Abstract Spotted spiny lobsters, Panulirus guttatus, are small, obligate reef-dwellers that exhibit a highly sedentary lifestyle and a low tendency to aggregate with conspecifics, and that reproduce asynchronously year-round. Individual females can produce multiple clutches per year but have a short receptivity per clutch. As in most spiny lobsters, females of P. guttatus mate only once per clutch and resist further mating attempts, features that may favour development of female mate choice but limit the potential for sperm competition. We separately examined mate choice by large and small mature females through laboratory experiments that controlled for effects of male–male competition, quality of shelter, and mere social attraction. Only large females expressed preference for larger males relative to their own size, suggesting that only large females that mate with small males risk sperm limitation on fecundity success. In couples that mated, males deposited rather small, thinly spread spermatophores on the sterna of females. Spermatophore area (considered as a proxy measure of sperm content) increased with male size and showed no relationship with female size, suggesting that males of P. guttatus have a short sperm-recovery period or do not exhibit strategic sperm allocation in a non-competitive context. A comparison of average sperm allocation between P. guttatus and its sympatric species, P. argus (a much larger, highly mobile, and highly social species with more seasonal reproductive periods and a longer receptivity of females per clutch), suggests that males of P. guttatus allocate proportionally less sperm to females, on average, than males of P. argus do. According to predictions of across-species risk models, this result suggests that males of P. guttatus perceive lower average levels of sperm competition risk than males of P. argus do, implying that different Panulirus species may exhibit different mating strategies in accordance with their particular life-history and sociobiological traits.

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