The fitness functions associated with diapause induction in arthropods I. The effects of age structure

Taylor, Fritz

doi:10.1016/0040-5809(86)90025-0

Cited by 28 publications

(27 citation statements)

References 12 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Similar correlations between diapause and development have been observed in other insects (e.g., !stock eta!. Alternatively, it may be partially explained by a physiological mechanism as suggested by a current hypothesis for the induction of diapause (Taylor 1986). The correlation we found may be genetic, similar to the genetic correlation between diapause and body size found for some populations of the same species by Mousseau and Roff (1989).…”

Section: Discussionmentioning

confidence: 92%

“…Our method of changing photoperiods and temperatures was also successful in reproducing the phenologies of three separate A. fasciatus populations (Bradford I 991 ). Taylor (1989) also notes that variability in diapause is much lower under naturally changing compared to constant photoperiods. Nonetheless, naturally changing photoperiods appear important in the diapause response; for A. fasciatus the transition between egg types is much more gradual for females reared under constant light conditions (cf.…”

Section: Discussionmentioning

confidence: 99%

“…1976, Henrich and Denlinger 1982, Hollingsworth and Capinera 1983. According to this hypothesis, a certain number of days with a photoperiod less than a critical day length must be experienced during a sensitive period before diapause is induced (Saunders 1987, Taylor 1989). Alternatively, it may be partially explained by a physiological mechanism as suggested by a current hypothesis for the induction of diapause (Taylor 1986).…”

Section: Discussionmentioning

confidence: 99%

See 2 more Smart Citations

Bet Hedging and the Diapause Strategies of the Cricket Allonemobius Fasciatus

Bradford¹,

Roff²

1993

Ecology

View full text Add to dashboard Cite

We investigated the roles of bet hedging and developmental plasticity in the diapause strategy of a partially bivoltine population of the cricket Allonemobius fasciatus. When reared under naturally changing environmental conditions, first-generation females produced increasing proportions of diapause eggs over their reproductive life-span, presumably reflecting the decreasing probability over time that sufficient growing season remains for a second generation. The transition from direct-developing to diapause eggs occurred over 35 d for the population, suggesting a considerable degree of bet hedging. The analysis of individuals, however, revealed a much more rapid response and large betweenfemale variability in the median (50%) diapause date. This rapid transition from nondiapause to diapause eggs implies that interannual variability in season length has not resulted in the evolution of a substantial risk-spreading strategy for individual females. Our results highlight the need to study life history variation at the level of the individual rather than the population.

show abstract

Section: Discussionmentioning

confidence: 92%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Bet Hedging and the Diapause Strategies of the Cricket Allonemobius Fasciatus

Bradford¹,

Roff²

1993

Ecology

View full text Add to dashboard Cite

show abstract

“…However, this may not be true for insects that have discrete generations because inappropriate timing of diapause induction will cause high mortality. In an age‐structured model, Taylor (1986) calculated fitness as the number of successfully overwintering individuals. His model assumed a narrow window for the diapause stage before the onset of the winter.…”

Section: Simulation Analysismentioning

confidence: 99%

Adaptation to the new land or effect of global warming? An age‐structured model for rapid voltinism change in an alien lepidopteran pest

Yamanaka¹,

Tatsuki²,

Shimada³

2008

Journal of Animal Ecology

View full text Add to dashboard Cite

Summary 1.Hyphantria cunea Drury invaded Japan at Tokyo in 1945 and expanded its distribution gradually into northern and south-western Japan. All populations in Japan were bivoltine until the early 1970s, at which time trivoltine populations appeared in several southern regions. Presently, H. cunea exists as separate bivoltine and trivoltine populations divided around latitude 36 ° . In the course of this voltinism change, the mean surface temperature in Japan rose by 1·0 ° C. 2. To determine whether and how this temperature increase might be responsible for the voltinism change, we constructed an age-structured model incorporating growth speed driven by actual daily temperature and detailed mechanisms of diapause induction triggered by both daily photoperiod and temperature. 3. The simulation result suggests that both the acceleration of the growth speed and the prolongation of diapause induction are necessary to cause changes in voltinism, regardless of temperature increase. We concluded that the H. cunea population changed its life-history traits as an adaptation parallel with its invasion into the south-western parts of Japan. 4. Though the temperature increase had little effect on the fitness and heat stress in bivoltine and trivoltine populations, the trivoltine life cycle has become advantageous at least in marginal regions such as Tokyo.

show abstract

“…Analyses of the optimal timing of diapause induction have contributed to the development of the theory of evolution of life history traits in unpredictable environments (Cohen 1970; Taylor 1986a, b; Bradshaw et al 1998; McNamara 1994; Bradford & Roff 1997). These previous studies have made some simplifying assumptions regarding diapause traits that may reduce the heuristic value of these models under some circumstances.…”

Section: Introductionmentioning

confidence: 99%

Optimal diapause strategies of a grasshopper, Melanoplus sanguinipes

Fielding

2006

Journal of Insect Science

View full text Add to dashboard Cite

Previous analyses of diapause in insects have most often focused on the timing of the switch from non-diapausing to diapausing offspring in bivoltine populations and have assumed that diapause is irreversible or that the insect cannot survive winter if not in diapause. Many insects exhibit more flexibility in their life cycles, such as the age at which diapause begins, and facultative diapause, that may influence the evolution of different diapause strategies in different environments. The grasshopper Melanoplus sanguinipes F. (Orthoptera: Acrididae), has a very wide geographic range over which diapause characteristics vary greatly. Embryonic diapause in this species may be under maternal control, may be obligate or facultative (i.e., may be averted by cold temperature treatment of pre-diapause embryos), and embryos may enter diapause at different ages. Diapause traits were examined in two populations of M. sanguinipes from very different environments. In the population from a temperate climate (Idaho, USA), diapause was facultative, i.e., pre-diapause embryos averted diapause when held at 5° C for 90 days at all ages tested (7 days and older). The Idaho embryos entered diapause in late stage of development if held at 22° C for 30 days or more. In populations from subarctic Alaska, USA, embryos also entered diapause in a late stage of development, but diapause was obligate and could not be averted by chilling in the pre-diapause stages. Simulated evolution of these traits over a wide range of season-lengths showed that late stage diapause is an essential trait in very short season environments, resulting in early hatching, and a semivoltine life-cycle. Facultative diapause enabled bivoltinism to be a viable strategy in shorter seasons than when diapause was obligate. At transitions from semivoltine to univoltine, and from univoltine to bivoltine life cycles, populations with obligate diapause adopted a strategy of no diapause (via maternal effects) to enable univoltine life cycles.

show abstract

The fitness functions associated with diapause induction in arthropods I. The effects of age structure

Cited by 28 publications

References 12 publications

Bet Hedging and the Diapause Strategies of the Cricket Allonemobius Fasciatus

Bet Hedging and the Diapause Strategies of the Cricket Allonemobius Fasciatus

Adaptation to the new land or effect of global warming? An age‐structured model for rapid voltinism change in an alien lepidopteran pest

Optimal diapause strategies of a grasshopper, Melanoplus sanguinipes

Contact Info

Product

Resources

About