1987
DOI: 10.1007/bf00385257
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Fat cycling in the mosquitofish (Gambusia affinis): fat storage as a reproductive adaptation

Abstract: We argue, based on reviewed literature covering reptiles, amphibians, birds, and fish, that fat storage may represent a life history adaptation because it enables an organism to shift in time when resources are allocated to reproduction. We applied these arguments to fat and population cycles in three populations of the mosquito fish, Gambusia affinis. For males, there appeared to be a constant size at maturation during the reproductive season. Mature males became scarce late in the summer. At the same time, i… Show more

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Cited by 132 publications
(126 citation statements)
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“…Capital breeders are expected to invest in reproduction only after enough body reserves (the capital) have been accumulated to reach a "body-condition threshold" (sensus Stearns, 1992). Although the influence of body condition on reproduction has been demonstrated in many species (Albon, Mitchell, Huby, and Brown, 1986;Reznick and Braun, 1987;DeRouen, Franke, Morisson, et al, 1994;Festa-Bianchet, Gaillard, and Jorgenson, 1998), the no-tion of a condition threshold stricto sensu is far less clear (review in Naulleau and Bonnet, 1996;Bonnet et al, 1998b). Our experimental data demonstrate the coexistence of two contrasting reproductive systems within a single capital-breeding snake species: a clearcut condition threshold in females versus a flexible system in males.…”
Section: Discussionmentioning
confidence: 59%
“…Capital breeders are expected to invest in reproduction only after enough body reserves (the capital) have been accumulated to reach a "body-condition threshold" (sensus Stearns, 1992). Although the influence of body condition on reproduction has been demonstrated in many species (Albon, Mitchell, Huby, and Brown, 1986;Reznick and Braun, 1987;DeRouen, Franke, Morisson, et al, 1994;Festa-Bianchet, Gaillard, and Jorgenson, 1998), the no-tion of a condition threshold stricto sensu is far less clear (review in Naulleau and Bonnet, 1996;Bonnet et al, 1998b). Our experimental data demonstrate the coexistence of two contrasting reproductive systems within a single capital-breeding snake species: a clearcut condition threshold in females versus a flexible system in males.…”
Section: Discussionmentioning
confidence: 59%
“…Males quickly increased their somatic condition from birth up to October, allowing them to reach sexual maturity and reproduce in the same reproductive season (Fernández-Delgado 1989). Females presented a moderate increase in condition during their first spring-summer and a stability or decrease in autumn and winter, probably because of the assignment of energy and resources to reproduction (Reznick & Braun 1987). After a period of somatic condition stability during the cold months, overwintering individuals showed a new increase in this parameter.…”
Section: Discussionmentioning
confidence: 98%
“…The high growth rate of young individuals favours their survival, as the advantages of larger size include greater feeding capacity and avoidance of predation (Reznick 1983). Moreover, achieving a minimum size before cold months might be important for overwinter survival (Reznick & Braun 1987).…”
Section: Discussionmentioning
confidence: 99%
“…Resource acquisition has received less attention in life history studies (Jönsson 1997). One aspect of resource acquisition is storage, which may be viewed as a fourth main purpose to which resources should be allocated (Reznick and Braun 1987). Stores allow organisms to reproduce at times or in areas where food is scarce.…”
Section: ______mentioning
confidence: 99%