A Sex Difference in Seasonal Timing of Birth in a Livebearing Fish

Schultz, Eric T.

doi:10.1643/ce-07-168

Cited by 14 publications

(12 citation statements)

References 35 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Typically, species without consistent genetic differentiation produce relatively more males as the temperature increases (Ospina‐Álvarez & Piferrer, ; Hasyashi et al , ), but in the channel catfish Ictalurus punctatus (Rafinesque 1818) (Patino et al , ), Korean rockfish Sebastes schlegeli Hilgendorf 1880 (Omoto et al , ), European seabass Dicentrarchus labrax (L. 1758) (Baroiller & D'Cotta, ) and possibly in dwarf perch Micrometus minimus (Gibbons 1854) high temperatures induce relatively more females. In the last species, Schultz () observed that broods developing at low temperatures early in the season produced relatively more males than those developed in warmer water later in the season. In the olive flounder Paralichthys olivaceus (Temminck & Schlegel 1846), both high and low temperatures induce monosex male populations while intermediate temperatures yield a 1:1 sex ratio (Baroiller & D'Cotta, ).…”

Section: Examples Of Traits Affected By Early Experiencesmentioning

confidence: 99%

Early environment influences later performance in fishes

Jönsson

2014

Journal of Fish Biology

234

179

View full text Add to dashboard Cite

Conditions fish encounter during embryogenesis and early life history can leave lasting effects not only on morphology, but also on growth rate, life-history and behavioural traits. The ecology of offspring can be affected by conditions experienced by their parents and mother in particular. This review summarizes such early impacts and their ecological influences for a variety of teleost species, but with special reference to salmonids. Growth and adult body size, sex ratio, egg size, lifespan and tendency to migrate can all be affected by early influences. Mechanisms behind such phenotypically plastic impacts are not well known, but epigenetic change appears to be one central mechanism. The thermal regime during development and incubation is particularly important, but also early food consumption and intraspecific density can all be responsible for later life-history variation. For behavioural traits, early experiences with effects on brain, sensory development and cognition appear essential. This may also influence boldness and other social behaviours such as mate choice. At the end of the review, several issues and questions for future studies are given.

show abstract

Section: Examples Of Traits Affected By Early Experiencesmentioning

confidence: 99%

Early environment influences later performance in fishes

Jönsson

2014

Journal of Fish Biology

234

179

View full text Add to dashboard Cite

show abstract

“…The latter may result from increased size-specific fecundity in response to food [45] or increased growth rates of adults when food availability is high, allowing higher fecundity via a consistent length -fecundity relationship. Species such as surfperch that exhibit the capacity to abort or resorb embryos in response to stress [46], show plasticity in their size -fecundity relationship [47] or exhibit increased growth rates in response to food [25,42] may be especially susceptible to such size-specific fecundity effects when either foraging habitat or the density of food therein changes substantially through time. In either case, we found strong effects of food in all model forms, with the most pronounced in the Cushing.…”

Section: Discussionmentioning

confidence: 99%

Fluctuations in food supply drive recruitment variation in a marine fish

et al. 2012

View full text Add to dashboard Cite

Reproductive rates and survival of young in animal populations figure centrally in generating management and conservation strategies. Model systems suggest that food supply can drive these often highly variable properties, yet for many wild species, quantifying such effects and assessing their implications have been challenging. We used spatially explicit time series of a well-studied marine reef fish (black surfperch Embiotoca jacksoni ) and its known prey resources to evaluate the extent to which fluctuations in food supply influenced production of young by adults and survival of young to subadulthood. Our analyses reveal: (i) variable food available to both adults and to their offspring directly produced an order of magnitude variation in the number of young-of-year (YOY) produced per adult and (ii) food available to YOY produced a similar magnitude of variation in their subsequent survival. We also show that such large natural variation in vital rates can significantly alter decision thresholds (biological reference points) important for precautionary management. These findings reveal how knowledge of food resources can improve understanding of population dynamics and reduce risk of overharvest by more accurately identifying periods of low recruitment.

show abstract

“…; Divino & Tonn ). However, not much is known about its effects on the incidence of different reproductive phenotypes, and most studies are restricted to sex ratio adjustments that include diverse mechanisms of phenotype determination (Dijkstra, Daan & Buker ; Schultz ). The ‘birth date hypothesis’ in the context of ARTs has only rarely been tested.…”

Section: Introductionmentioning

confidence: 99%

“…The influence of the timing of birth on life-history traits from survival and growth and on timing of maturation and reproductive success has been widely demonstrated in several taxa (Price, Kirkpatrick & Arnold 1988;Schultz 1993;Cargnelli & Gross 1996;Dawson & Clark 2000;Descamps et al 2006;Divino & Tonn 2007). However, not much is known about its effects on the incidence of different reproductive phenotypes, and most studies are restricted to sex ratio adjustments that include diverse mechanisms of phenotype determination (Dijkstra, Daan & Buker 1990;Schultz 2008). The 'birth date hypothesis' in the context of ARTs has only rarely been tested.…”

Section: Introductionmentioning

confidence: 99%

Birth date predicts alternative life‐history pathways in a fish with sequential reproductive tactics

Fagundes¹,

Simões²,

Saraiva

et al. 2015

Functional Ecology

View full text Add to dashboard Cite

Summary In species with plastic expression of alternative reproductive tactics (ARTs), individuals of the same sex, usually males, can adopt different reproductive tactics depending on factors such as body size. The ‘birth date hypothesis’ proposes that condition‐dependent expression of ARTs may ultimately depend on birth date, because individuals born at different times of the year may achieve different sizes and express different reproductive tactics accordingly. However, this has rarely been tested. Here, we tested this hypothesis in a fish with ARTs, the peacock blenny (Salaria pavo). A long‐term (6 years) mark–recapture study demonstrated that ARTs in the peacock blenny were sequential and that males may follow at least two alternative life‐history pathways: a nest‐holder pathway, in which males express the nest‐holder tactic from their first breeding season onwards, and a parasitic pathway, where males reproduce on their first breeding season as sneaker males and subsequently as nest‐holders. We have found evidence of a birth date effect on the expression of ARTs in the peacock blenny. Males following the nest‐holder pathway are born earlier and are larger at the first breeding season than males following the parasitic pathway, but they have similar growth curves. The mechanisms underlying a birth date effect are far from clear and might be diverse. We have not found support for a mechanism of body size threshold triggering sexual maturation and subsequent ARTs. A mechanism of tactic determination that is strictly based on timing of first maturation is also unlikely. A proxy of lifetime reproductive success shows crossing (body size associated) fitness curves for the two main life‐history pathways.

show abstract

A Sex Difference in Seasonal Timing of Birth in a Livebearing Fish

Cited by 14 publications

References 35 publications

Early environment influences later performance in fishes

Early environment influences later performance in fishes

Fluctuations in food supply drive recruitment variation in a marine fish

Birth date predicts alternative life‐history pathways in a fish with sequential reproductive tactics

Contact Info

Product

Resources

About