Some beneficial effects of aggregation in young larvae ofPryeria sinica moore (Lepidoptera: Zygaenidae)
- Yoshitaka Tsubaki
- … show all 1 hide
Rent the article at a discountRent now
* Final gross prices may vary according to local VAT.Get Access
The effects of group size on the survival and development of young larvae ofPryeria sinica Moore were investigated by laboratory and field experiments.
Under laboratory conditions, about 20% of isolated larvae died of unsuccessful feeding in the first instar, however, larvae survived successfully in aggregations of four or more individuals.
In the field, larvae emerge in early spring and wait for new leaves to open before feeding. In this period, the larger the group size of hatchlings the survival rate became higher. The nest-web spun by hatchlings was considered to play an important role in protecting them from desiccation. In the period that larvae began to feed on leaves, more than 36 larvae are necessary to aggregate for the successful establishment of feeding groups. The nest-web played an important role also in the establishment of feeding group. However, the natural group size of the first instar larvae was larger than the minimum group size to spin a sound nest-web in the field experiment.
On the other hand, in later stage, larvae in a large group did not have an excess advantage in survival or developmental rate over larvae in a small group. It was found that the experiments on survival and developmental rates could not explain the reason that this species maintain large compact groups in the most part of larval period.
- Ghent, A. W. (1960) A study of the group feeding behaviour of larvae of the jack pine sawfly,Neodiprion pratti banksianae Rho.Behaviour 16: 110–148.
- Hosoya, J. (1956) Notes on the biology of the tea tussock moth,Euproctis pseudoconspersa Strand.Jap. J. Sanit. Zool. 7: 77–82. (In Japanese)
- Itô, Y. andK. Miyashita (1968) Biology ofHyphantria cunea Drury (Lepidoptera: Arctiidae) in Japan. V. Preliminary life tables and mortality data in urban areas.Res. Popul. Ecol. 10: 177–209. CrossRef
- Iwao, S. (1968) Some effects of grouping in lepidopterous insects. In:L'effect de groupe chez les animaux. pp. 185–212. Colloq. Intern. Centr. Nat. Rech. Sci. No. 173, Paris.
- Long, D. B. (1953) Effects of population density on larvae of lepidoptera.Trans. Roy. Ent. Soc. London 104: 543–585.
- Mizuta, K. (1960) Effects of indivivual number on the development and survival of the larvae of two lymantriid species living in aggregation and in scattering.Jap. J. appl. Ent. Zool. 4: 146–152. (In Japanese with English summary)
- Mizuta, K. (1968) The effect of larval aggregation upon survival, development, adult longevity and fecundity of a zygaenid moth,Artona funeralis Butler,Bull. Hiroshima Agr. Coll. 3: 97–107.
- Mizuta, K. (1972) Effect of larval aggregation on the development ofPryeria sinica Moore (Lepidoptera: Zygaenidae).Bull. Hiroshima Agr. Coll. 4: 193–197.
- Morimoto, N. (1967) Larval aggregation of the Japanese giant silk mothDictyoploca japonica Butler.J. Fac. Agr. Shinshu Univ. 4: 141–154. (In Japanese with English summary)
- Morimoto, N. (1976) Observation on larval behaviour of some gregarious insects.Physiol. Ecol. Japan,17: 79–84. (In Japanese with English summary)
- Morimoto, N. andT. Masuzawa (1974) Studies on the larval aggregation ofNordmaniana trachydelta Meyrick (Lepidoptera: Yponomeutidae).J. Fac. Agr. Shinshu Univ. 11: 231–243.
- Nakamura, H. (1977) An analysis of mortality process of young larvae in gregarious insects.Jap. J. appl. Ent. Zool. 21: 190–196. (In Japanese with English summary)
- Shiga, M. (1976) Effect of group size on the survival and development of young larvae ofMalacosoma neustria testacea Motschlsky (Lepidoptera: Lasiocampidae) and its role in the natural population.Kontyu 44: 537–553.
- Sugimoto, T. (1962) Influences of individuals in aggregation or isolation on the development and survival of the larvae ofArtona funeralis.Jap. J. appl. Ent. Zool. 6: 196–199. (In Japanese with English summary)
- Tsubaki, Y. andN. Yamamura (1980) A model descriptive of gregariousness of colonial insect larvae.Res. Popul. Ecol. 21: 332–344.
- Watanabe, N. andK. Umeya (1968) Biology ofHyphantria cunea Drury (Lepidoptera: Arctiidae) in Japan. IV. Effects of group size on survival and growth of larvae.Res. Bull. Plant Protec. Serv. Japan No.6: 1–6.
- Some beneficial effects of aggregation in young larvae ofPryeria sinica moore (Lepidoptera: Zygaenidae)
Researches on Population Ecology
Volume 23, Issue 1 , pp 156-167
- Cover Date
- Print ISSN
- Online ISSN
- Additional Links
- Author Affiliations
- 1. Laboratory of Applied Entomology and Nematology, Faculty of Agriculture, Nagoya University, 464, Nagoya, Japan