Resource allocation in butterflies

Updated 2003-04-24

Recent findings on the highly polyandrous and nuptial gift giving butterfly Pieris napi shows that females may use resources (nitrogen) from thorax, presumably from breakdown of wing muscles, to increase their reproductive potential and the results indicate that also males can use thorax material in their reproduction. This possibility that males in polyandrous species use thorax material in a similar way as females is up to now unknown. As the degree of polyandry increase, males invest more to reproductive parts and equals females with respect to size.This possibility that males in polyandrous species use thorax material in a similar way as females is up to now unknown and very interesting. As the degree of polyandry increase, males invest more to reproductive parts and equals females with respect to size. This shift between the sexes in how resources are used may also be valid to breakdown of resources in thorax. The first part of the study has focused on these aspects, i.e. what are the differences in how males of species with different mating systems use their resources (especially nitrogen). For this purpose we participate in a large comparative study of Swedish and US butterflies.In the Abisko area we are interested especially in collecting one satyrid species, Erebia pandrose, since this species (in contrast to other satyrid species)is highly polyandrous.

Time frame

Status
Ongoing
Project time span
2001 - 2003
Data collection
not specified
Data processing
not specified
Data reporting
not specified

Contact information

Contact person
Bengt Karlsson
Address
Dept. of Zoology Univ. of Stockholm1 206 91 Stockholm

Parameters and Media

Not specified

Geography

Regions studied
Abisko Scientific Research Station

Data availability

Samples/specimens archived in specimen banks?
No

Methods & Procedures

Not specified

Additional Information

Is this a bi- AND multi-lateral project (i.e. a project involving cooperation between different countries)?
No
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