Ageing trajectory and longevity trade-off in an aphidophagous ladybird, Propylea dissecta (Coleoptera: Coccinellidae)

Mishra, Geetanjali

doi:10.14411/eje.2006.005

Cited by 22 publications

(13 citation statements)

References 38 publications

(31 reference statements)

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“…Numerous theories of ageing have been suggested, of which evolutionary theories form a major category (Medvedev, 1990), significant among which are: (i) anta‐gonistic pleiotropy hypothesis (Gliksman & Tucic, 1991; Rose, 1991; Parsons, 1995; (ii) mutation accumulation (Medawar, 1952); and (iii) the disposable soma theory (Kirkwood & Rose, 1991). The latter theory derives support from studies of life‐history trade‐offs in a number of insects (Roff, 1992; Zera & Harshman, 2001; Mishra & Omkar, 2006) where expenditure on current reproduction was found to decrease the future reproductive potential of the parent (Begon & Parker, 1986). However, there are also studies to the contrary (Williams, 1966; Gadgil & Bossert, 1970; Charlesworth, 1980).…”

Section: Introductionmentioning

confidence: 96%

Influence of age at mating on the reproductive performance of Parthenium beetle, Zygogramma bicolorata (Coleoptera: Chrysomelidae)

et al. 2010

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Age-specific mating incidence, sexual maturation and effect of age at mating on reproductive performance of the Parthenium beetle, Zygogramma bicolorata Pallister, was studied. Based on 50% mating incidence the calculated age of sexual maturation of males and females was 10.5 and 11.1 days, respectively, which was not statistically significant. However, on the basis of age at first mating, that is, sexual maturity, females matured 2 days earlier than males. Fecundity, pre-oviposition, oviposition and post-oviposition period and female longevity appear to be influenced by female age at mating with reproductive performance peaking at 30 days. On the other hand, egg viability was influenced by male age and was highest when males mated at the age of 40 days. To summarise, egg production and timing of egg deposition was female age-dependent, whereas egg fertility was male age-dependent. It was also observed that females mated at a later age and laid a higher number of eggs immediately after mating than did earlier mated females. This was ostensibly in a bid to increase fitness by maximizing reproductive output in the reduced life span available. This is the first investigation on the effect of age of females at mating on reproduction in this beetle.

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Section: Introductionmentioning

confidence: 96%

Influence of age at mating on the reproductive performance of Parthenium beetle, Zygogramma bicolorata (Coleoptera: Chrysomelidae)

et al. 2010

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“…This decline in physiological performance with age is known to be influenced by a number of factors prominent amongst which are dietary restrictions (Piper & Partridge, 2007 and references therein) and reproduction (Rose, 1984;Finch, 1990Finch, , 1998Tatar et al, 1993;Partridge et al, 1999;Finch & Ruvkun, 2001;Robine, 2001). The acceleration of ageing in reproductively active individuals (Arnqvist & Nilsson, 2000;Priest et al, 2002;Mishra & Omkar, 2006), which is reflected in a deterioration in fitness and increase in mortality rate, is reported for a number of insects (Rose, 1984;Van Voorhies, 1992;Simmons & Bradley, 1997;Mishra & Omkar, 2006). The mechanism is explained in terms of reproductive costs (Partridge, 1986;Omkar & Mishra, 2005) and trade offs (Kokko, 1998;Finch & Ruvkun, 2001;Robine, 2001;Mishra & Omkar, 2006).…”

Section: Introductionmentioning

confidence: 99%

Parental age at mating affects reproductive attributes of the aphidophagous ladybird beetle, Coelophora saucia (Coleoptera: Coccinellidae)

Omkar¹,

Singh²,

Mishra³

2010

Eur. J. Entomol.

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Ageing and its affect on life attributes have not been widely explored in ladybirds. The present study investigates the influence of female and male age at mating on the reproductive attributes of the ladybird beetle, Coelophora saucia (Mulsant). All reproductive attributes, viz. fecundity, percentage egg hatch, pre-oviposition, oviposition and post-oviposition periods were found to be influenced by the ages of both females and males at mating. This is unlike the results of previous studies on ladybirds, where male age was found to influence only percentage egg hatch. The influence of male age at mating on fecundity and reproductive periods is probably due to age influenced variation in seminal proteins, which influence fecundity and when the eggs are laid.

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“…There is also the risk of suffering an interruption before the completion of sperm transfer (Daly 1978; Dickinson 1997). There is a mating‐longevity trade‐off, which reveals that mating reduces the longevity in ladybirds (Mishra and Omkar 2006). However, the successful evolution of prolonged mating in these ladybirds signifies that its benefits must have outweighed the associated costs.…”

Section: Discussionmentioning

confidence: 99%

Influence of mating duration on fecundity and fertility in two aphidophagous ladybirds

Singh

Pervez

2006

J Applied Entomology

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The influence of different mating durations on fecundity and fertility has been studied in two aphidophagous ladybirds, Cheilomenes sexmaculata and Coelophora saucia. Pre-oviposition period decreased while fecundity and fertility increased with increase in mating duration in both the ladybird species. The increase in fecundity with longer mating durations is probably due to the female response because of cryptic female choice. Mating of 10-s duration resulted in oviposition but of unviable eggs probably because of lack of sperm transfer. A minimum duration of 1 min of mating was probably essential for fertilization of the eggs. Absence of spermatophore in the reproductive tract of females is indicative of direct sperm transfer in both the ladybird species. Trend of fertility (similar fertility at 1 and 5 min followed by increase at 60 min which was again similar to that at complete mating) indicates probable sperm transfer in spurts in C. sexmaculata while continuous transfer in C. saucia is indicated by continuous increase in fertility with increase in mating duration.

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Ageing trajectory and longevity trade-off in an aphidophagous ladybird, Propylea dissecta (Coleoptera: Coccinellidae)

Cited by 22 publications

References 38 publications

Influence of age at mating on the reproductive performance of Parthenium beetle, Zygogramma bicolorata (Coleoptera: Chrysomelidae)

Influence of age at mating on the reproductive performance of Parthenium beetle, Zygogramma bicolorata (Coleoptera: Chrysomelidae)

Parental age at mating affects reproductive attributes of the aphidophagous ladybird beetle, Coelophora saucia (Coleoptera: Coccinellidae)

Influence of mating duration on fecundity and fertility in two aphidophagous ladybirds

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