Parents’ living conditions influence offspring fitness and competency

Amiri, Azam; Bandani, Alireza

doi:10.1016/j.jspr.2021.101795

Cited by 6 publications

(3 citation statements)

References 36 publications

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“…Data on eupyrene number, apyrene number, and ln(x)-transformed testis size were normally distributed. Because the experimental design was pseudoreplicated, we employed a linear mixed-effects model [65,66] to analyze our data with treatment as a fixed factor and replicate nested into vial (male source) as a random factor [19,[66][67][68]. We used a Tukey test for multiple comparisons between treatments.…”

Section: Discussionmentioning

confidence: 99%

Pupal Cues Increase Sperm Production but Not Testis Size in an Insect

Liu

Zheng

et al. 2021

Insects

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Theoretic and empirical studies show that social surroundings experienced by male insects during their larval or adult stage can influence their testicular investment in diverse ways. Although insect pupae do not feed and crawl, they can communicate using sex-specific and/or non-sex specific cues. Yet, it is unknown, in any insect, whether and how male pupae can fine-tune their resource allocation to sperm production and testis size in response to socio-sexual environments. We investigated this question using a moth, Ephestia kuehniella, which produces fertile eupyrene sperm and unfertile apyrene sperm. We held male pupae individually or in groups with different sex ratios, and dissected adults upon eclosion, measured their testis size, and counted both types of sperm. We demonstrated that after exposure to conspecific pupal cues regardless of sex, male pupae increased production of eupyrenes and apyrenes at the same rate but kept testis size unchanged. We suggest that testis size is fixed after pupation because most morphological traits are formed during the larval stage, allowing little room for pupae to adjust testis size. Like adults, male pupae with fully grown testes have sufficient resources to produce more sperm of both types according to the perceived increase in sperm competition risk.

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Section: Discussionmentioning

confidence: 99%

Pupal Cues Increase Sperm Production but Not Testis Size in an Insect

Liu

Zheng

et al. 2021

Insects

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“…Exposure to competitor males early in life is very costly for the males of monandrous species but lower for polyandrous species such as C. maculatus (Amiri & Bandani, 2021;Lizé et al, 2014).…”

Section: Discussionmentioning

confidence: 99%

“…The fitness benefit of single copulation is high for males in a monandrous species. Exposure to competitor males early in life is very costly for the males of monandrous species but lower for polyandrous species such as C. maculatus (Amiri & Bandani, 2021; Lizé et al, 2014). Therefore, it makes sense that males of C. maculatus were more reluctant to accept interference risk.…”

Section: Discussionmentioning

confidence: 99%

Callosobruchus larval competition and its consequences for male and female adults

Amiri

Bandani

2022

Ethology

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The struggle for life is generally the most intense among individuals of the same species because they compete to access the same food, territory, and mates. In the current study, we used Callosobruchus maculatus to investigate how males and females respond to a competitor's presence inside a bean. We monitored males' and females' from egg to adult developmental time, adult emergence, copulation success, copulatory behaviors, fecundity, egg hatching percentage, and adult longevity. Our findings revealed that a competitor's presence during immature life did not influence developmental time and adult longevity in females and males. Also, the environmental condi-How to cite this article:

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Transgenerational transmission of environmental effects in livestock in the age of global warming

Gershoni

2023

Cell Stress and Chaperones

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Parents’ living conditions influence offspring fitness and competency

Cited by 6 publications

References 36 publications

Pupal Cues Increase Sperm Production but Not Testis Size in an Insect

Pupal Cues Increase Sperm Production but Not Testis Size in an Insect

Callosobruchus larval competition and its consequences for male and female adults

Transgenerational transmission of environmental effects in livestock in the age of global warming

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