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Reproductive success of bagworms, Oi...

Rhainds, Marc.

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Reproductive success of bagworms, Oiketicus kirbyi (Guilding) and Metisa plana (Walker) (Lepidoptera: Psychidae).

Record Type:	Electronic resources : Monograph/item
Title/Author:	Reproductive success of bagworms, Oiketicus kirbyi (Guilding) and Metisa plana (Walker) (Lepidoptera: Psychidae)./
Author:	Rhainds, Marc.
Description:	201 p.
Notes:	Source: Dissertation Abstracts International, Volume: 61-09, Section: B, page: 4535.
Contained By:	Dissertation Abstracts International61-09B.
Subject:	Biology, Entomology. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=NQ52714
ISBN:	061252714X

Reproductive success of bagworms, Oiketicus kirbyi (Guilding) and Metisa plana (Walker) (Lepidoptera: Psychidae).
Rhainds, Marc.

Reproductive success of bagworms, Oiketicus kirbyi (Guilding) and Metisa plana (Walker) (Lepidoptera: Psychidae). - 201 p.

Source: Dissertation Abstracts International, Volume: 61-09, Section: B, page: 4535.

Thesis (Ph.D.)--Simon Fraser University (Canada), 1999.

Unusual life history of bagworms (Lepidoptera: Psychidae), with sessile females completing their reproductive activity within a self-constructed bag, provides an opportunity to evaluate factors influencing lifetime reproductive success. Sampling and experimental studies conducted in plantations of oil palms investigated density-dependent processes and life history traits that affect reproductive success and population dynamics of 2 allopatric bagworms, Oiketicus kirbyi in Costa Rica and Metisa plana in Southeast Asia. Similar within- and between-plant distribution of M. plana in parental and offspring generations indicated that emergent larvae commonly do not disperse, suggesting that local populations of bagworm exhibit high level of genetic relatedness. Density- and defoliation-dependent dispersal by larval M. plana contributes to their reproductive success, because larvae on crowded palms attain small size at pupation, and small bagworms have low survival during pupal stage (male and female M. plana), mating success (female O. kirbyi and M. plana) and fecundity (female O. kirbyi and M. plana). Greater incidence of ballooning by female than male larvae may be due to females seeking suitable hosts for their progeny. For O. kirbyi, mortality during pupal stage was greater for females than males; the opposite trend was observed for M. plana. For both O. kirbyi and M. plana, females emerged before males; protogyny may be a common life history trait in bagworms that contribute to reduce inbreeding. Female O. kirbyi produced a blend of 4 chiral esters to attract males for mating. As previously reported for other bagworms, relatively large proportions of female O. kirbyi and M. plana did not mate as adult. Size-dependent mating success of female bagworms may be attributed, in part, to males preferentially mating with large, most fecund females. Density-dependent dispersal by larvae, as well as small size and low mating success of females on crowded palms, contribute to stabilize local populations of M plana. Individual variations of female reproductive success influenced the population dynamics of M. plana.

ISBN: 061252714XSubjects--Topical Terms:

1018619
Biology, Entomology.

Reproductive success of bagworms, Oiketicus kirbyi (Guilding) and Metisa plana (Walker) (Lepidoptera: Psychidae).
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245 1 0 $a Reproductive success of bagworms, Oiketicus kirbyi (Guilding) and Metisa plana (Walker) (Lepidoptera: Psychidae).
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500 $a Adviser: G. Gries.
502 $a Thesis (Ph.D.)--Simon Fraser University (Canada), 1999.
520 $a Unusual life history of bagworms (Lepidoptera: Psychidae), with sessile females completing their reproductive activity within a self-constructed bag, provides an opportunity to evaluate factors influencing lifetime reproductive success. Sampling and experimental studies conducted in plantations of oil palms investigated density-dependent processes and life history traits that affect reproductive success and population dynamics of 2 allopatric bagworms, Oiketicus kirbyi in Costa Rica and Metisa plana in Southeast Asia. Similar within- and between-plant distribution of M. plana in parental and offspring generations indicated that emergent larvae commonly do not disperse, suggesting that local populations of bagworm exhibit high level of genetic relatedness. Density- and defoliation-dependent dispersal by larval M. plana contributes to their reproductive success, because larvae on crowded palms attain small size at pupation, and small bagworms have low survival during pupal stage (male and female M. plana), mating success (female O. kirbyi and M. plana) and fecundity (female O. kirbyi and M. plana). Greater incidence of ballooning by female than male larvae may be due to females seeking suitable hosts for their progeny. For O. kirbyi, mortality during pupal stage was greater for females than males; the opposite trend was observed for M. plana. For both O. kirbyi and M. plana, females emerged before males; protogyny may be a common life history trait in bagworms that contribute to reduce inbreeding. Female O. kirbyi produced a blend of 4 chiral esters to attract males for mating. As previously reported for other bagworms, relatively large proportions of female O. kirbyi and M. plana did not mate as adult. Size-dependent mating success of female bagworms may be attributed, in part, to males preferentially mating with large, most fecund females. Density-dependent dispersal by larvae, as well as small size and low mating success of females on crowded palms, contribute to stabilize local populations of M plana. Individual variations of female reproductive success influenced the population dynamics of M. plana.
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