Influence of photoperiod on the development of diapause in larvae and its cost for individuals of a univoltine population of Dendrolimus punctatus (Lepidoptera: Lasiocampidae)
Larvae of Dendrolimus punctatus overwinter in diapause. In the Yangtze River Region, this species is multivoltine at altitudes below 400 m and univoltine above 700 m a.s.l. The photoperiodic response of the univoltine population, investigated at five day lengths (11.5, 12.5, 13.5, 14.5 and 15.5 h) a...
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| Format: | Article |
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Institute of Entomology, Biology Centre, Czech Academy of Science
2013-01-01
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| Series: | European Journal of Entomology |
| Subjects: | |
| Online Access: | https://www.eje.cz/artkey/eje-201301-0013_Influence_of_photoperiod_on_the_development_of_diapause_in_larvae_and_its_cost_for_individuals_of_a_univoltine.php |
| _version_ | 1818963558040338432 |
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| author | Ju-Ping ZENG Yong WANG Xing-Ping LIU |
| author_facet | Ju-Ping ZENG Yong WANG Xing-Ping LIU |
| author_sort | Ju-Ping ZENG |
| collection | DOAJ |
| description | Larvae of Dendrolimus punctatus overwinter in diapause. In the Yangtze River Region, this species is multivoltine at altitudes below 400 m and univoltine above 700 m a.s.l. The photoperiodic response of the univoltine population, investigated at five day lengths (11.5, 12.5, 13.5, 14.5 and 15.5 h) at 27 + 1°C, indicates that D. punctatus is a long-day species. Diapause was induced in 95-100% of the individuals by three short photophases (11.5-13.5 h), while diapause incidence decreased steeply with increase in day length down to 10% at 15.5 h. The critical daylength (CDL = day length resulting in a 50% incidence of diapause) is 14.6 h. When induced by critical or longer photophases (14.5 and 15.5 h), diapause terminated spontaneously, without any change in photoperiod or temperature. Diapause induced at shorter photophases was more intense and not terminated without activation by diapause averting conditions. Larvae in diapause lived for up to 190 d when kept under a 11.5 h photophase during which they remained sensitive to the photoperiodic signal. In transfer experiments, diapause was terminated after an increase in photoperiod, even if it was within the range of diapause inducing photoperiods: from 11.5 h to 13.5 h. This study revealed that the univoltine hill dwelling population of D. punctatus undergoes a facultative diapause. Although potentially multivoltine they are univoltine because of the low temperatures at that altitude. |
| first_indexed | 2024-12-20T12:47:07Z |
| format | Article |
| id | doaj.art-fbd37761317046e78d8e0c36a4de87a0 |
| institution | Directory Open Access Journal |
| issn | 1210-5759 1802-8829 |
| language | English |
| last_indexed | 2024-12-20T12:47:07Z |
| publishDate | 2013-01-01 |
| publisher | Institute of Entomology, Biology Centre, Czech Academy of Science |
| record_format | Article |
| series | European Journal of Entomology |
| spelling | doaj.art-fbd37761317046e78d8e0c36a4de87a02022-12-21T19:40:18ZengInstitute of Entomology, Biology Centre, Czech Academy of ScienceEuropean Journal of Entomology1210-57591802-88292013-01-0111019510110.14411/eje.2013.013eje-201301-0013Influence of photoperiod on the development of diapause in larvae and its cost for individuals of a univoltine population of Dendrolimus punctatus (Lepidoptera: Lasiocampidae)Ju-Ping ZENG0Yong WANG1Xing-Ping LIU2College of Forestry, Jiangxi Agricultural University, Zhimin Road 1225, Nanchang 330045, P.R. China; e-mail: zengjupingjxau@163.com; liuxp@eyou.comPlant Protection and Quarantine Station, Hunan Province Agricultural Department, Changsha 410005, P.R. China; e-mail: wanghaohan2005@163.comCollege of Forestry, Jiangxi Agricultural University, Zhimin Road 1225, Nanchang 330045, P.R. China; e-mail: zengjupingjxau@163.com; liuxp@eyou.comLarvae of Dendrolimus punctatus overwinter in diapause. In the Yangtze River Region, this species is multivoltine at altitudes below 400 m and univoltine above 700 m a.s.l. The photoperiodic response of the univoltine population, investigated at five day lengths (11.5, 12.5, 13.5, 14.5 and 15.5 h) at 27 + 1°C, indicates that D. punctatus is a long-day species. Diapause was induced in 95-100% of the individuals by three short photophases (11.5-13.5 h), while diapause incidence decreased steeply with increase in day length down to 10% at 15.5 h. The critical daylength (CDL = day length resulting in a 50% incidence of diapause) is 14.6 h. When induced by critical or longer photophases (14.5 and 15.5 h), diapause terminated spontaneously, without any change in photoperiod or temperature. Diapause induced at shorter photophases was more intense and not terminated without activation by diapause averting conditions. Larvae in diapause lived for up to 190 d when kept under a 11.5 h photophase during which they remained sensitive to the photoperiodic signal. In transfer experiments, diapause was terminated after an increase in photoperiod, even if it was within the range of diapause inducing photoperiods: from 11.5 h to 13.5 h. This study revealed that the univoltine hill dwelling population of D. punctatus undergoes a facultative diapause. Although potentially multivoltine they are univoltine because of the low temperatures at that altitude.https://www.eje.cz/artkey/eje-201301-0013_Influence_of_photoperiod_on_the_development_of_diapause_in_larvae_and_its_cost_for_individuals_of_a_univoltine.phplepidopteralasiocampidaedendrolimus punctatusphotoperiodcritical daylength (cdl)diapause developmentterminationcost of diapause |
| spellingShingle | Ju-Ping ZENG Yong WANG Xing-Ping LIU Influence of photoperiod on the development of diapause in larvae and its cost for individuals of a univoltine population of Dendrolimus punctatus (Lepidoptera: Lasiocampidae) European Journal of Entomology lepidoptera lasiocampidae dendrolimus punctatus photoperiod critical daylength (cdl) diapause development termination cost of diapause |
| title | Influence of photoperiod on the development of diapause in larvae and its cost for individuals of a univoltine population of Dendrolimus punctatus (Lepidoptera: Lasiocampidae) |
| title_full | Influence of photoperiod on the development of diapause in larvae and its cost for individuals of a univoltine population of Dendrolimus punctatus (Lepidoptera: Lasiocampidae) |
| title_fullStr | Influence of photoperiod on the development of diapause in larvae and its cost for individuals of a univoltine population of Dendrolimus punctatus (Lepidoptera: Lasiocampidae) |
| title_full_unstemmed | Influence of photoperiod on the development of diapause in larvae and its cost for individuals of a univoltine population of Dendrolimus punctatus (Lepidoptera: Lasiocampidae) |
| title_short | Influence of photoperiod on the development of diapause in larvae and its cost for individuals of a univoltine population of Dendrolimus punctatus (Lepidoptera: Lasiocampidae) |
| title_sort | influence of photoperiod on the development of diapause in larvae and its cost for individuals of a univoltine population of dendrolimus punctatus lepidoptera lasiocampidae |
| topic | lepidoptera lasiocampidae dendrolimus punctatus photoperiod critical daylength (cdl) diapause development termination cost of diapause |
| url | https://www.eje.cz/artkey/eje-201301-0013_Influence_of_photoperiod_on_the_development_of_diapause_in_larvae_and_its_cost_for_individuals_of_a_univoltine.php |
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