Prorandry in the Pine Looper, Bupalus Piniarius (Lep., Geometridae); an Explanatory Model

Prorandry in the Pine Looper, Bupalus Piniarius (Lep., Geometridae); an Explanatory Model PRORANDRY IN THE PINE LOOPER, BUPALUS PINIARIUS (LEP., GEOMETRIDAE); AN EXPLAN- ATORY MODEL by PETER F. BOTTERWEG (Norwegian forest research institute P.O. Box 61, 1432 ÅS-NLH, Norway) SUMMARY A simulation model is presented which explains the occurrence of protandry (i.e. males emerge on average before females) in the pine looper Bupalus piniarius. The model calculates the fitness of the moths in relation to their date of emergence during the period of emergence. It is investigated how this fitness is affected by: a) the difference between the mean time of emergence of males and females, b) the age of the moths at copulation, c) the mortality rate and longevity of the moths, d) the flight activity of the males, and e) the density of the moths. The input of the model is based on field data and experimental results. The model shows that a) the difference and the mean time of emergence between males and females is maintained by selection of males, such that they on average emerge 2 days before the females, b) 95% of the females mate on the day of emergence, c) the flight activity of the males together with moth density has a significant effect http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Netherlands Journal of Zoology (in 2003 continued as Animal Biology) Brill

Prorandry in the Pine Looper, Bupalus Piniarius (Lep., Geometridae); an Explanatory Model

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Publisher
Brill
Copyright
© 1981 Koninklijke Brill NV, Leiden, The Netherlands
ISSN
0028-2960
eISSN
1568-542X
D.O.I.
10.1163/002829682X00120
Publisher site
See Article on Publisher Site

Abstract

PRORANDRY IN THE PINE LOOPER, BUPALUS PINIARIUS (LEP., GEOMETRIDAE); AN EXPLAN- ATORY MODEL by PETER F. BOTTERWEG (Norwegian forest research institute P.O. Box 61, 1432 ÅS-NLH, Norway) SUMMARY A simulation model is presented which explains the occurrence of protandry (i.e. males emerge on average before females) in the pine looper Bupalus piniarius. The model calculates the fitness of the moths in relation to their date of emergence during the period of emergence. It is investigated how this fitness is affected by: a) the difference between the mean time of emergence of males and females, b) the age of the moths at copulation, c) the mortality rate and longevity of the moths, d) the flight activity of the males, and e) the density of the moths. The input of the model is based on field data and experimental results. The model shows that a) the difference and the mean time of emergence between males and females is maintained by selection of males, such that they on average emerge 2 days before the females, b) 95% of the females mate on the day of emergence, c) the flight activity of the males together with moth density has a significant effect

Journal

Netherlands Journal of Zoology (in 2003 continued as Animal Biology)Brill

Published: Jan 1, 1981

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