Population‐specific responses of an insect herbivore to variation in host‐plant quality

Kuczyk, Josephine; Raharivololoniaina, Ange; Fischer, Klaus

doi:10.1002/ece3.8392

Cited by 3 publications

(1 citation statement)

References 73 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Cooler temperatures can slow down metabolic processes of insects, reducing energy consumption and potentially extending their lifespans (Karl & Fischer, 2009; Karlsson & Wiklund, 2005). In the same way, lower temperatures can enhance the persistence of host plants in ideal conditions for larval development (Kuczyk et al., 2021; Stefanescu et al., 2022). Overall, these factors will increase reproductive success and, hence, population size, explaining the observed higher population abundance in the cooler regions of our studied species.…”

Section: Discussionmentioning

confidence: 99%

Factors shaping the abundance of two butterflies sharing resources and enemies across a biogeographic region

Colom,

Traveset,

Shaw

et al. 2023

Journal of Biogeography

View full text Add to dashboard Cite

AimIntraspecific variation in species relative abundance is shaped by a complex interplay of abiotic and biotic factors, making it both necessary and challenging to assess their combined relative importance in explaining variations across space and time. We used two congeneric butterfly species for which extensive count data and a deep understanding of their natural history is available to test three hypotheses explaining intraspecific variation in their abundance: (H1) seasonal dispersal behaviour driven by climate, (H2) resource availability and (H3) apparent competition mediated via shared parasitoids.TaxonGonepteryx rhamni (Brimstone) and G. cleopatra (Cleopatra).LocationNE Iberian Peninsula, where both species coexist, and a nearby archipelago (Balearic Islands), where only Cleopatra occurs.MethodsWe analysed spatial abundance variations for both species in the mainland and island–mainland differences in the abundance of Cleopatra. Abiotic and biotic factors, including temperature, host plant and overwintering habitat availability, larval parasitism and density dependence, were tested to explain the observed variations.ResultsH1 can explain variation in butterfly abundance between mainland regions since in warmer summers populations increased in cooler areas but decreased in warmer areas. H2 explains the variation within mainland climate regions with a strong positive relationship between resource availability and abundance but is unlikely to explain the island–mainland variation in the abundance of Cleopatra. H3 could neither explain biogeographical variation in abundance because although richer parasitoid communities were found on the mainland, larval mortality rates were similar or lower on the mainland than in the islands.Main ConclusionsClimate and resource availability jointly account for variation in butterfly abundance across the mainland, but neither these factors nor parasitism can explain island–mainland differences. Both coexisting butterfly species and their larval parasitoids may have undergone evolutionary processes, resulting in spatial segregation that promotes the coexistence of the two butterfly species on the mainland.

show abstract

Section: Discussionmentioning

confidence: 99%

Factors shaping the abundance of two butterflies sharing resources and enemies across a biogeographic region

Colom,

Traveset,

Shaw

et al. 2023

Journal of Biogeography

View full text Add to dashboard Cite

show abstract

Effects of different host plants on population fitness of pea aphid (Acyrthosiphon pisum)

Yang

et al. 2023

Journal of King Saud University - Science

View full text Add to dashboard Cite

Development and Fecundity of Oriental Fruit Moth (Lepidoptera: Tortricidae) Reared on Various Concentrations of Amygdalin

Wang

Chai

et al. 2022

Insects

View full text Add to dashboard Cite

Grapholita molesta (Busck) (Lepidoptera: Tortricidae), Oriental fruit moth (OFM), attacks fruits and shoots of the economically important trees in Rosaceae. Amygdalin is a cyanogenic glucoside of rosaceous plants that may be related to the seasonal patterns of infestation in many pests. The amygdalin concentration of fruits and shoots of peach, pear, and apple varies over the growing season. However, the relationship between the amygdalin concentration and G. molesta performance has not been reported. Here, we measured the performance (feeding, growth, development, and fecundity) of G. molesta larvae (as subsequent adults) reared on artificial diets with six amygdalin concentrations (0, 3, 6, 12, 24, and 48 mg/g), and we then calculated the population parameters. We found that these different concentrations of amygdalin affected the developmental time and fecundity, except for the proportion of larvae feeding on the diet and the survival rates of larvae and pupae. When compared with the control diet without amygdalin, diets with 3 or 6 mg/g (low and moderate concentrations) of amygdalin shortened developmental times and increased the number of eggs laid by females; however, a diet with 12 mg/g (moderate concentration) of amygdalin only increased the number of eggs laid by females and did not affect the larval and pupal developmental rate. A diet with 48 mg/g (high concentration) of amygdalin prolonged developmental times and reduced the number of eggs laid by females when compared with the control diet without amygdalin. Furthermore, the intrinsic rate of increase (rm) for insects reared on diets with 3 or 6 mg/g (low and moderate concentrations) of amygdalin versus the control diet without amygdalin showed a slightly improved population growth. However, this increase in the rm value did not persist over ten successive generations of rearing on the same diet. We concluded that the diet with 6 mg of amygdalin per g of diet can enhance the performance and population growth of G. molesta, but the effects of amygdalin are concentration-dependent.

show abstract

Population‐specific responses of an insect herbivore to variation in host‐plant quality

Cited by 3 publications

References 73 publications

Factors shaping the abundance of two butterflies sharing resources and enemies across a biogeographic region

Factors shaping the abundance of two butterflies sharing resources and enemies across a biogeographic region

Effects of different host plants on population fitness of pea aphid (Acyrthosiphon pisum)

Development and Fecundity of Oriental Fruit Moth (Lepidoptera: Tortricidae) Reared on Various Concentrations of Amygdalin

Contact Info

Product

Resources

About