Conditions Governing Diapuse Induction in the Lady Beetle, Coccinella septempunctata bruckii (Coleoptera : Coccinellidae)

Sakurai, Hiroyuki; Hirano, Tetsushi; Kodama, Kazuyuki; Takeda, Susumu

doi:10.1303/aez.22.133

Cited by 9 publications

(5 citation statements)

References 2 publications

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“…Although we did not investigate the effects of photoperiod on diapause induction, our results agreed with the photoperiodic response previously reported: populations from central Honshu showed a short-day photoperiodic response (Okuda and Hodek, 1983;Sakurai et al, 1986aSakurai et al, , 1987a and that from Hokkaido showed a reverse response (Okuda and Hodek, 1994).…”

Section: Discussionsupporting

confidence: 92%

“…In central Honshu, Japan, the beetle has two generations per a year, and the adult undergoes diapause in summer and quiescence in winter (Sakurai et al, 1981(Sakurai et al, , 1982(Sakurai et al, , 1983(Sakurai et al, , 1986b(Sakurai et al, , 1987a. Thus the populations from central Honshu showed a short-day photoperiodic response (Okuda and Hodek, 1983), while the reverse response was found in a population from Hokkaido, northern Japan (Okuda and Hodek, 1994).…”

Section: Introductionmentioning

confidence: 99%

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Geographic and annual variation of summer-diapause expression in the ladybird beetle, Coccinella septempunctata (Coleoptera: Coccinellidae), in Japan

Ohashi

Kawauchi

Sakuratani

2003

Appl. Entomol. Zool.

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Variation in the summer-diapause expression of the ladybird beetle, Coccinella septempunctata, among local populations and years was investigated by field observation and dissection of sampled specimens, in Japan. Only non-diapausing adults were found in Hokkaido, northern Japan, whereas diapausing adults were observed at most sites in Honshu and southward in summer. However, the non-diapausing adults were also observed in northern Honshu and at high-altitudinal sites of central Honshu. The frequency of diapause expression in northern Honshu varied greatly among populations and years. The frequency of non-diapausing adults was significantly higher when average daily mean air temperature for July was relatively low. This indicated that the populations inhabiting northern Honshu have plasticity in diapause induction, primarily in response to temperature conditions. Moreover, the coexistence of diapausing adults and non-diapausing adults at the same site was often observed. This suggested that there might be genetic variation in diapause tendency within a local population.

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Section: Discussionsupporting

confidence: 92%

Section: Introductionmentioning

confidence: 99%

Geographic and annual variation of summer-diapause expression in the ladybird beetle, Coccinella septempunctata (Coleoptera: Coccinellidae), in Japan

Ohashi

Kawauchi

Sakuratani

2003

Appl. Entomol. Zool.

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“…The emerged parasitoid wasps were fed on 30% sucrose solution until their use in experiments. The host beetles were reared under laboratory conditions at 26 ~ Non-diapause and diapause beetles were obtained by rearing them under short day (L12:D12) and long day (L16:D8) conditions, respectively (Okuda & Hodek, 1983;Sakurai et al, 1987). Coccinellids were fed on aphids (mainly Acyrthosiphon pisum).…”

Section: Methodsmentioning

confidence: 99%

“…The coccinellid has been reported as bivoltine in central Japan. The first generation enters imaginal diapause in the summer while the adults of the second generation hibernate (Sakurai et al, 1987). The aestivation diapause is controled by photoperiod and temperature, i.e., long day and high temperature enhance the diapause incidence (Okuda & Hodek, 1983).…”

Section: Introductionmentioning

confidence: 99%

Synchronous growth of a parasitoid, Perilitus coccinellae, and teratocytes with the development of the host, Coccinella septempunctata

Kadono-Okuda

Sakurai

Takeda

et al. 1995

Entomologia Exp Applicata

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The relationship between the development of Coccinella septempunctata brucki Mulsant (Coleoptera: Coccinellidae) and its parasitoid, Perilitus coccinellae (Schrank) (Hymenoptera: Braconidae) was studied at two photoperiods (L16:D8 and L12:D12) at 26 °C. The development of P. coccinellae is well synchronized with the physiological state of the host, C. septempunctata, which can be parasitized not only as adult but also as larva or pupa. The parasitoid larva completed larval development within 19 days in a non‐diapausing host, while in diapausing adults as well as in pupae held at diapause‐averting conditions, the parasitoid larva ceased growth at the first instar. Growth was resumed when diapause of the host terminated or by the emergence of the adult host from the pupa. About 550 spheric cells, teratocytes, were liberated into the host hemocoel when the parasitoid egg hatched. The teratocytes increased in size in the active host, while their development was arrested in the diapausing host. Application of methoprene caused diapause termination of both host and parasitoid larva. The results indicate that the development of the larva of P. coccinellae depends on the physiological conditions of the host, C. septempunctata brucki. The host‐parasite relation thus represents an ‘endogenous synchronization’ in the sense of Schoonhoven's definition.

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“…This ladybird species typically has two, occasionally more, generations per year in central Japan. The first-generation adults typically aestivate during summer and second-generation adults overwinter in a quiescent state (Sakurai et al 1983;Ohashi et al 2005). Thus, the C. septempunctata populations on M. capillaris corresponded to the second generation.…”

Section: Scientific Notementioning

confidence: 97%

Emergence of the aphid Hysteroneura setariae (Thomas, 1878) and ladybird predators Coccinella septempunctata L., 1758 (Coleoptera: Coccinellidae) on the grass Muhlenbergia capillaris (Lamark) Trinius in central Japan

Yamazaki

2023

Entomol Commun

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Pink muhly grass Muhlenbergia capillaris (Lamark) Trinius is a perennial, tussock-forming grass that is native to North and Central America. The reddish-purple coloration of the spikes of this species has resulted in this grass becoming popular as an ornamental plant around the world. Interestingly, very few insects have been reported to be associated with this grass. I therefore examined arthropod assemblages on M. capillaris in two urban parks in central Japan in autumn and found that the aphid Hysteroneura setariae (Thomas, 1878) (Hemiptera: Aphididae) and its natural ladybird predator Coccinella septempunctata L., 1758 (Coleoptera: Coccinellidae) occurred at high densities at one of the parks (ca. 9000 vs 3.4 individuals/m2). Other insect pests, such as the moth Helicoverpa armigera (Hübner, 1808) (Lepidoptera: Noctuidae) and mirid bugs were also present, but at markedly lower densities. Since H. setariae is not a pest in Japan and C. septempunctata is a beneficial predator, M. capillaris could be used as a banker plant in agricultural fields as well as in urban green spaces.

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Conditions Governing Diapuse Induction in the Lady Beetle, Coccinella septempunctata bruckii (Coleoptera : Coccinellidae)

Cited by 9 publications

References 2 publications

Geographic and annual variation of summer-diapause expression in the ladybird beetle, Coccinella septempunctata (Coleoptera: Coccinellidae), in Japan

Geographic and annual variation of summer-diapause expression in the ladybird beetle, Coccinella septempunctata (Coleoptera: Coccinellidae), in Japan

Synchronous growth of a parasitoid, Perilitus coccinellae, and teratocytes with the development of the host, Coccinella septempunctata

Emergence of the aphid Hysteroneura setariae (Thomas, 1878) and ladybird predators Coccinella septempunctata L., 1758 (Coleoptera: Coccinellidae) on the grass Muhlenbergia capillaris (Lamark) Trinius in central Japan

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