Title
Trade-offs between melanization, development time and adult size in Inachis io and Araschnia levana (Lepidoptera : Nymphalidae)? Trade-offs between melanization, development time and adult size in Inachis io and Araschnia levana (Lepidoptera : Nymphalidae)?
Author
Faculty/Department
Faculty of Sciences. Biology
Publication type
article
Publication
Edinburgh ,
Subject
Chemistry
Biology
Human medicine
Source (journal)
Heredity. - Edinburgh
Volume/pages
82(1999) :Part 1 , p. 57-68
ISSN
0018-067X
ISI
000078770200007
Carrier
E
Target language
English (eng)
Full text (Publishers DOI)
Affiliation
University of Antwerp
Abstract
Effects of melanization in the juvenile stages of the European map butterfly (Araschnia levana) and the peacock butterfly (Inachis io) on the life history traits, larval and pupal development time and size at maturity, and on adult melanization were investigated. Pupae and 5th instar larvae of A. levana vary in degree of melanization, the latter possibly determined by a single major gene. Variation in melanization in I. io occurs only in the pupal stage and is under low genetic control. In both species life history traits and adult melanization are influenced by juvenile melanization, both at phenotypic and genetic levels. Many of the relationships are consistent with trade-offs, e.g, melanized 5th instars of A. levana grow more slowly in early instars and I. io adults from melanized pupae are smaller and less black. However, some results are inconsistent with a trade-off hypothesis. Possible adaptive and physiological explanations are discussed. Araschnia levana shows seasonal polyphenism in wing pattern; pale larvae produced more spring forms, probably resulting from slower growth in the 5th instar. Genetic correlations across environments for larval development time and adult size are to a large extent influenced by larval melanization.
E-info
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