Allee effect, sexual selection and demographic stochasticity

Møller, Anders Pape; Legendre, Stéphane

doi:10.1034/j.1600-0706.2001.920104.x

Cited by 115 publications

(85 citation statements)

References 74 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Thus, the details of how female choice rules respond to novel environmental scenarios can strongly influence population persistence. Our lack of systematic knowledge of plasticity is regrettable, because there is a real possibility that mating behavior influences extinction risk, particularly if environmental conditions change (Møller and Legendre 2001;Bessa-Gomes et al 2003).…”

Section: Consequences For Sexual Selectionmentioning

confidence: 99%

“…Some of them arise naturally: populations may mainly respond to selective pressures in core areas of their range, leaving species at the edges of their distribution maladapted (Kawecki 1995;Holt et al 2004). Populations may also undergo drastic changes in density due to anthropogenic influences, and these may influence mate encounter rates (Møller and Legendre 2001;Milner-Gulland et al 2003;Rowe and Hutchins 2003). In either case, it is interesting to ask if changes in mate encounter rates alter the process of sexual selection, as it is increasingly recognized that sexual selection can have population consequences (e.g., accelerated levels of adaptation, Proulx 1999;Lorch et al 2003; but also possibly heightened risk of extinction, Doherty et al 2003;.…”

mentioning

confidence: 99%

See 1 more Smart Citation

Sexual Selection When Fertilization Is Not Guaranteed

2005

View full text Add to dashboard Cite

Abstract. Much of the theory of sexual selection assumes that females do not generally experience difficulties getting their eggs fertilized, yet sperm limitation is occasionally documented. How often does male limitation form a selection for female traits that improve their mating rate? The question is difficult to test, because if such traits evolve to be efficient, sperm limitation will no longer appear to be a problem to females. Here, we suggest that changes in choosiness between populations, and in particular between virgin and mated females, offer an efficient way to test this hypothesis. We model the ''wallflower effect,'' that is, changes in female preferences due to time and mortality costs of remaining unmated (for at least some time). We show that these costs cause adaptive reductions of female choice, even if mate encounter rates appear high and females only rarely end their lives unfertilized. We also consider the population consequences of plastic or fixed mate preferences at different mate encounter rates. If mate choice is plastic, we confirm earlier verbal models that virgins should mate relatively indiscriminately, but plastic increase of choosiness in later matings can compensate and intensify sexual selection on the male trait, particularly if there is last male sperm precedence. Plastic populations will cope well with unusual conditions: eagerness of virgins leads to high reproductive output and a relaxation of sexual selection at low population densities. If females lack such plasticity, however, population-wide reproductive output may be severely reduced, whereas sexual selection on male traits remains strong.

show abstract

Section: Consequences For Sexual Selectionmentioning

confidence: 99%

mentioning

confidence: 99%

Sexual Selection When Fertilization Is Not Guaranteed

2005

View full text Add to dashboard Cite

show abstract

“…A decrease in density of male individuals in a population by the large male-selective harvesting, reduces the frequency of female encounters with males (Moller and Legendre 2001) and then causes difficulies for females to find mates, resulting in loss of mating opportunity and delayed mating of females (Powell et al 1974;Ennis 1980;Smith and Jamieson 1991;Ginsberg and Milner-Gulland 1994;Milner et al 2007). Negative effects of delayed mating on spawning success, fertilization and offspring quality have been reported in several animal species including fishery resources (McMullen 1969;Paul and Adams 1984;Unnithan and Payne 1991;Torres-Vila et al 2002;Huang and Subramanyam 2003; doi:10.5047/absm.2012.00503.0067 © 2012 TERRAPUB, Tokyo.…”

Section: Introductionmentioning

confidence: 99%

Impacts of Large Male-Selective Harvesting on Reproduction: Illustration with Large Decapod Crustacean Resources

Sato¹

2012

Aqua-BioSci. Monogr. (ABSM)

View full text Add to dashboard Cite

Keywordsbeen reported in many species of vertebrates and invertebrates (e.g. Bianchi et al. 2000;Branch and Odendaal 2003;Roy et al. 2003;Harvey et al. 2006).In a wide range of taxa, body size is one of the key determinants of fitness in both males and females (Andersson 1994). For example, body size is positively correlated with reproductive fitness (e.g. mating success and fecundity). Mostly, larger males are stronger competitors for females (e.g. Hoefler 2007) or can provide more ejaculated sperm (e.g. Jivoff 1997), or better care for the offspring (e.g. Kolm 2002). In females, body size positively correlates with egg size (e.g. Einum and Fleming 1999), number of spawning (e.g. Claramunt et al. 2007), number of eggs spawned (e.g. Evans et al. 2008), or quality of larvae (e.g. Berkeley et al. 2004). Therefore, mate choice is non-random in the majority of animal species (Real 1990), and males and females prefer larger mates mutually (e.g. Sandvik et al. 2000;Herdman et al. 2004; Aquiloni and Gherardi AbstractTo signal a need for caution for present large male-selective harvesting practices, negative impacts of the large male-selective harvesting on reproductive output in large decapod crustacean resources are introduced with emphasis on my own work with spiny king crab Paralithodes brevipes, coconut crab Birgus latro, and the stone crab Hapalogaster dentata. The large male-selective harvestings for several large decapod crustaceans have changed their population demographic structure by decreasing mean male size and skewing sex ratio towards females. By several field and laboratory experiments, the change of population demographic structure was anticipated to decrease female reproductive success in the resources (i.e. reproductive output of the harvested populations) through a decrease in sperm availability for females because of male size-dependent reproductive potentials and slow sperm recovery rate. Furthermore, reproductive output and stability of the large male-selective harvested resources were also anticipated to decline by a decrease in mate availability for females, attributing to combination of female mate choice for larger males with negative effects of female delayed mating and/or maternal influences. To establish the optimal management practices, the details of the mating system and reproductive ecology of each targeted species should be investigated.

show abstract

“…Mating systems have received insufficient attention for the indirect but significant influence they can have on population dynamics and conservation biology (Møller & Legendre 2001, Quader 2005. This is particularly true of marine fishes, many of which are at historic population lows and for which very little is known of their behaviour during the spawning period (Rowe & Hutchings 2003).…”

Section: Introductionmentioning

confidence: 99%

Morphological and behavioural correlates of reproductive success in Atlantic cod Gadus morhua

Rowe¹,

Hutchings²,

Skjæraasen³

et al. 2008

Mar. Ecol. Prog. Ser.

View full text Add to dashboard Cite

We tested the hypothesis that reproductive success is randomly distributed within spawning aggregations of Atlantic cod Gadus morhua, a broadcast-spawning marine fish for which no parental care is provided. Based on microsatellite DNA-parentage assignment of 8913 offspring from 4 large (n = 52 to 93) experimental spawning aggregations, we quantified individual variation in male reproductive success and evaluated the degree to which this variation could be explained by aspects of morphology, condition, and spawning behaviour. Reproductive success was highly skewed, with more than 80% of the offspring within each group sired by 2 to 7 individuals. Body size and agonistic interactions initiated were positively associated with male reproductive success within each group. The lengths of fins prominent during courtship and mating were also correlated with reproductive success within one of the spawning groups for which data were available. Our observations are consistent with the hypotheses that some form of intrasexual competition or mate choice is a constituent of the mating system of this species and that the ratio of effective to census population size in broadcast-spawning marine fishes is very small. 354: 257-265, 2008 3 to 6 wk (Chambers & Waiwood 1996, Kjesbu et al. 1996 within a 6 to 12 wk spawning season (Myers et al. 1993). KEY WORDS: Mating system · Fertilization success · Mating success · Reproductive skew · Broadcast spawning Resale or republication not permitted without written consent of the publisherMar Ecol Prog SerDespite a wealth of fisheries research on this species, the mating system of Atlantic cod, like that of most broadcast-spawning fishes, is not well understood , Rowe & Hutchings 2003. Captive breeding studies (Brawn 1961a, Hutchings et al. 1999 have shown that the release of eggs is immediately preceded by a 'ventral mount' in which the male, whilst grasping the female with his larger pelvic fins (Skjaeraasen et al. 2006) and matching her swimming speed, positions himself beneath her. Upon commencement of spawning, the mating pair may be joined by 'satellite males' that swim amongst the eggs, releasing sperm and fertilizing eggs in competition with the primary male (Hutchings et al. 1999, Rakitin et al. 2001, Bekkevold et al. 2002. Before mounting attempts, agonistic interactions are often seen among males and may allow behaviourally dominant individuals to establish 'territories' (Brawn 1961a, Hutchings et al. 1999. Successful ventral mounts also appear to be preceded by courtship behaviour, which has been described as an intense 'flaunting' display during which the courting male moves alongside and in front of the female with median fins fully erect while 'swimming with an excited, jerky, undulating movement with many unnecessary circles' (Brawn 1961a). Reproduction is also associated with sound produced using 3 pairs of drumming muscles exterior to the swimbladder wall (Brawn 1961b, Rowe & Hutchings 2004; these sounds, which appear to be only produced by males (Brawn 1961b)...

show abstract

Allee effect, sexual selection and demographic stochasticity

Cited by 115 publications

References 74 publications

Sexual Selection When Fertilization Is Not Guaranteed

Sexual Selection When Fertilization Is Not Guaranteed

Impacts of Large Male-Selective Harvesting on Reproduction: Illustration with Large Decapod Crustacean Resources

Morphological and behavioural correlates of reproductive success in Atlantic cod Gadus morhua

Contact Info

Product

Resources

About