Impacts of diet quality on life-history and reproductive traits in male and female armed beetle, Gnatocerus cornutus

Masako Katsuki, Yasukazu Okada, Kensuke Okada

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

1. The energy available for reproduction is usually limited by resource acquisition (i.e. condition). Because condition is known to be strongly affected by environmental factors, reproductive investments also vary across heterogeneous environments. 2. Although the condition dependence of reproductive investment is common to both sexes, reproductive traits may exhibit sexually different responses to environmental fluctuation due to sex-specific life-history strategies. However, few direct experimental studies have investigated the condition dependence of reproductive investments in both sexes. 3. We investigated the condition dependence of life-history and reproductive traits of males and females in the beetle Gnatocerus cornutus Fabricus by manipulating larval and adult diet quality. We found that male and female life-history traits exhibited similar responses to environmental fluctuations. 4. By contrast, the sexes exhibit different patterns of condition dependence in reproductive traits (i.e. the adult nutritional environment has a strong impact on the female lifetime reproductive success, whereas larval nutritional environment strongly affects the secondary sexual trait in males). 5. This difference in the plasticity of reproductive traits may lead to different selection pressures for each sex, even if both sexes develop and/or live in the same environment.

Original languageEnglish
Pages (from-to)463-470
Number of pages8
JournalEcological Entomology
Volume37
Issue number6
DOIs
Publication statusPublished - Dec 2012

Fingerprint

Gnatocerus cornutus
nutritional adequacy
reproductive traits
beetle
life history
diet
Coleoptera
gender
life history trait
reproductive success
plasticity
environmental factor
experimental study
resource
energy
environmental factors

Keywords

  • Condition dependence
  • Exaggerated trait
  • Resource allocation
  • Sex ratio
  • Sexually selected trait

ASJC Scopus subject areas

  • Insect Science
  • Ecology

Cite this

Impacts of diet quality on life-history and reproductive traits in male and female armed beetle, Gnatocerus cornutus. / Katsuki, Masako; Okada, Yasukazu; Okada, Kensuke.

In: Ecological Entomology, Vol. 37, No. 6, 12.2012, p. 463-470.

Research output: Contribution to journalArticle

@article{0197d14bed9e4ce5b740887a24ed7dca,
title = "Impacts of diet quality on life-history and reproductive traits in male and female armed beetle, Gnatocerus cornutus",
abstract = "1. The energy available for reproduction is usually limited by resource acquisition (i.e. condition). Because condition is known to be strongly affected by environmental factors, reproductive investments also vary across heterogeneous environments. 2. Although the condition dependence of reproductive investment is common to both sexes, reproductive traits may exhibit sexually different responses to environmental fluctuation due to sex-specific life-history strategies. However, few direct experimental studies have investigated the condition dependence of reproductive investments in both sexes. 3. We investigated the condition dependence of life-history and reproductive traits of males and females in the beetle Gnatocerus cornutus Fabricus by manipulating larval and adult diet quality. We found that male and female life-history traits exhibited similar responses to environmental fluctuations. 4. By contrast, the sexes exhibit different patterns of condition dependence in reproductive traits (i.e. the adult nutritional environment has a strong impact on the female lifetime reproductive success, whereas larval nutritional environment strongly affects the secondary sexual trait in males). 5. This difference in the plasticity of reproductive traits may lead to different selection pressures for each sex, even if both sexes develop and/or live in the same environment.",
keywords = "Condition dependence, Exaggerated trait, Resource allocation, Sex ratio, Sexually selected trait",
author = "Masako Katsuki and Yasukazu Okada and Kensuke Okada",
year = "2012",
month = "12",
doi = "10.1111/j.1365-2311.2012.01390.x",
language = "English",
volume = "37",
pages = "463--470",
journal = "Ecological Entomology",
issn = "0307-6946",
publisher = "Wiley-Blackwell",
number = "6",

}

TY - JOUR

T1 - Impacts of diet quality on life-history and reproductive traits in male and female armed beetle, Gnatocerus cornutus

AU - Katsuki, Masako

AU - Okada, Yasukazu

AU - Okada, Kensuke

PY - 2012/12

Y1 - 2012/12

N2 - 1. The energy available for reproduction is usually limited by resource acquisition (i.e. condition). Because condition is known to be strongly affected by environmental factors, reproductive investments also vary across heterogeneous environments. 2. Although the condition dependence of reproductive investment is common to both sexes, reproductive traits may exhibit sexually different responses to environmental fluctuation due to sex-specific life-history strategies. However, few direct experimental studies have investigated the condition dependence of reproductive investments in both sexes. 3. We investigated the condition dependence of life-history and reproductive traits of males and females in the beetle Gnatocerus cornutus Fabricus by manipulating larval and adult diet quality. We found that male and female life-history traits exhibited similar responses to environmental fluctuations. 4. By contrast, the sexes exhibit different patterns of condition dependence in reproductive traits (i.e. the adult nutritional environment has a strong impact on the female lifetime reproductive success, whereas larval nutritional environment strongly affects the secondary sexual trait in males). 5. This difference in the plasticity of reproductive traits may lead to different selection pressures for each sex, even if both sexes develop and/or live in the same environment.

AB - 1. The energy available for reproduction is usually limited by resource acquisition (i.e. condition). Because condition is known to be strongly affected by environmental factors, reproductive investments also vary across heterogeneous environments. 2. Although the condition dependence of reproductive investment is common to both sexes, reproductive traits may exhibit sexually different responses to environmental fluctuation due to sex-specific life-history strategies. However, few direct experimental studies have investigated the condition dependence of reproductive investments in both sexes. 3. We investigated the condition dependence of life-history and reproductive traits of males and females in the beetle Gnatocerus cornutus Fabricus by manipulating larval and adult diet quality. We found that male and female life-history traits exhibited similar responses to environmental fluctuations. 4. By contrast, the sexes exhibit different patterns of condition dependence in reproductive traits (i.e. the adult nutritional environment has a strong impact on the female lifetime reproductive success, whereas larval nutritional environment strongly affects the secondary sexual trait in males). 5. This difference in the plasticity of reproductive traits may lead to different selection pressures for each sex, even if both sexes develop and/or live in the same environment.

KW - Condition dependence

KW - Exaggerated trait

KW - Resource allocation

KW - Sex ratio

KW - Sexually selected trait

UR - http://www.scopus.com/inward/record.url?scp=84870329704&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84870329704&partnerID=8YFLogxK

U2 - 10.1111/j.1365-2311.2012.01390.x

DO - 10.1111/j.1365-2311.2012.01390.x

M3 - Article

VL - 37

SP - 463

EP - 470

JO - Ecological Entomology

JF - Ecological Entomology

SN - 0307-6946

IS - 6

ER -