Costs and benefits of larval jumping behaviour of Bathyplectes anurus

Yoriko Saeki, Soichiro Tani, Katsuto Fukuda, Shun Ichiro Iwase, Yuma Sugawara, Midori Tuda, Masami Takagi

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Bathyplectes anurus, a parasitoid of the alfalfa weevils, forms a cocoon in the late larval stage and exhibits jumping behaviour. Adaptive significance and costs of the cocoon jumping have not been thoroughly studied. We hypothesised that jumping has the fitness benefits of enabling habitat selection by avoiding unfavourable environments. We conducted laboratory experiments, which demonstrated that jumping frequencies increased in the presence of light, with greater magnitudes of temperature increase and at lower relative humidity. In addition, when B. anurus individuals were allowed to freely jump in an arena with a light gradient, more cocoons were found in the shady area, suggesting microhabitat selection. In a field experiment, mortality of cocoons placed in the sun was significantly higher than for cocoons placed in the shade. B. anurus cocoons respond to environmental stress by jumping, resulting in habitat selection. In the presence of potential predators (ants), jumping frequencies were higher than in the control (no ant) arenas, though jumping frequencies decreased after direct contact with the predators. Body mass of B. anurus cocoons induced to jump significantly decreased over time than cocoons that did not jump, suggesting a cost to jumping. We discuss the benefits and costs of jumping behaviour and potential evolutionary advantages of this peculiar trait, which is present in a limited number of species.

Original languageEnglish
Article number103
JournalScience of Nature
Volume103
Issue number1-2
DOIs
Publication statusPublished - Feb 1 2016

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Bathyplectes anurus
cocoon
jumping
cocoons
cost
habitat selection
habitat preferences
ant
Formicidae
predator
Hypera postica
predators
environmental stress
alfalfa
parasitoid
microhabitat
direct contact
body mass
relative humidity
microhabitats

All Science Journal Classification (ASJC) codes

  • Ecology, Evolution, Behavior and Systematics

Cite this

Saeki, Y., Tani, S., Fukuda, K., Iwase, S. I., Sugawara, Y., Tuda, M., & Takagi, M. (2016). Costs and benefits of larval jumping behaviour of Bathyplectes anurus. Science of Nature, 103(1-2), [103]. https://doi.org/10.1007/s00114-015-1324-1

Costs and benefits of larval jumping behaviour of Bathyplectes anurus. / Saeki, Yoriko; Tani, Soichiro; Fukuda, Katsuto; Iwase, Shun Ichiro; Sugawara, Yuma; Tuda, Midori; Takagi, Masami.

In: Science of Nature, Vol. 103, No. 1-2, 103, 01.02.2016.

Research output: Contribution to journalArticle

Saeki, Y, Tani, S, Fukuda, K, Iwase, SI, Sugawara, Y, Tuda, M & Takagi, M 2016, 'Costs and benefits of larval jumping behaviour of Bathyplectes anurus', Science of Nature, vol. 103, no. 1-2, 103. https://doi.org/10.1007/s00114-015-1324-1
Saeki, Yoriko ; Tani, Soichiro ; Fukuda, Katsuto ; Iwase, Shun Ichiro ; Sugawara, Yuma ; Tuda, Midori ; Takagi, Masami. / Costs and benefits of larval jumping behaviour of Bathyplectes anurus. In: Science of Nature. 2016 ; Vol. 103, No. 1-2.
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