Chemical defense against predation in an insect egg.

The larva of the green lacewing (Ceraeochrysa cubana) (Neur tera, Chrysopidae) is a natural predator of eggs of UtethE ornatrix (Lepidoptera, Arctiidae), a moth that sequesters pyrrc idine alkaloids from its larval foodplant (Fabaceae, Crotalaria sp Utetheisa eggs are ordinarily endowed with the alk...

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Main Authors: Eisner, Thomas., Eisner, Maria., Rossini, Carmen., Iyengar, Vikram., Roach, Braden.
Format: Villanova Faculty Authorship
Language:English
Published: 2000
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spelling Chemical defense against predation in an insect egg.
Eisner, Thomas.
Eisner, Maria.
Rossini, Carmen.
Iyengar, Vikram.
Roach, Braden.
The larva of the green lacewing (Ceraeochrysa cubana) (Neur tera, Chrysopidae) is a natural predator of eggs of UtethE ornatrix (Lepidoptera, Arctiidae), a moth that sequesters pyrrc idine alkaloids from its larval foodplant (Fabaceae, Crotalaria sp Utetheisa eggs are ordinarily endowed with the alkaloid. Alkale free Utetheisa eggs, produced experimentally, are pierced by larva with its sharp tubular jaws and sucked out. Alkaloid-lai eggs, in contrast, are rejected. When attacking an Utetheisa E cluster (numbering on average 20 eggs), the larva subjects it to inspection process. It prods and/or pierces a small number of el (on average two to three) and, if these contain alkaloid, it pas "negative judgement" on the remainder of the cluster and tu away. Such generalization on the part of the larva makes ser because the eggs within clusters differ little in alkaloid contE There is, however, considerable between-cluster variation in ( alkaloid content, so clusters in nature can be expected to rai widely in palatability. To check each cluster for acceptability m therefore be adaptive for the larva, just as it must be adaptive Utetheisa to lay its eggs in large clusters and to apportion alkal evenly among eggs of a cluster.
2000
Villanova Faculty Authorship
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Proceedings of the National Academy of Sciences, USA 97(4), Feburary 15, 2000, 1634-1639.
en
dc.title_txt_mv Chemical defense against predation in an insect egg.
dc.creator_txt_mv Eisner, Thomas.
Eisner, Maria.
Rossini, Carmen.
Iyengar, Vikram.
Roach, Braden.
dc.description_txt_mv The larva of the green lacewing (Ceraeochrysa cubana) (Neur tera, Chrysopidae) is a natural predator of eggs of UtethE ornatrix (Lepidoptera, Arctiidae), a moth that sequesters pyrrc idine alkaloids from its larval foodplant (Fabaceae, Crotalaria sp Utetheisa eggs are ordinarily endowed with the alkaloid. Alkale free Utetheisa eggs, produced experimentally, are pierced by larva with its sharp tubular jaws and sucked out. Alkaloid-lai eggs, in contrast, are rejected. When attacking an Utetheisa E cluster (numbering on average 20 eggs), the larva subjects it to inspection process. It prods and/or pierces a small number of el (on average two to three) and, if these contain alkaloid, it pas "negative judgement" on the remainder of the cluster and tu away. Such generalization on the part of the larva makes ser because the eggs within clusters differ little in alkaloid contE There is, however, considerable between-cluster variation in ( alkaloid content, so clusters in nature can be expected to rai widely in palatability. To check each cluster for acceptability m therefore be adaptive for the larva, just as it must be adaptive Utetheisa to lay its eggs in large clusters and to apportion alkal evenly among eggs of a cluster.
dc.date_txt_mv 2000
dc.format_txt_mv Villanova Faculty Authorship
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dc.source_txt_mv Proceedings of the National Academy of Sciences, USA 97(4), Feburary 15, 2000, 1634-1639.
dc.language_txt_mv en
author Eisner, Thomas.
Eisner, Maria.
Rossini, Carmen.
Iyengar, Vikram.
Roach, Braden.
spellingShingle Eisner, Thomas.
Eisner, Maria.
Rossini, Carmen.
Iyengar, Vikram.
Roach, Braden.
Chemical defense against predation in an insect egg.
author_facet Eisner, Thomas.
Eisner, Maria.
Rossini, Carmen.
Iyengar, Vikram.
Roach, Braden.
dc_source_str_mv Proceedings of the National Academy of Sciences, USA 97(4), Feburary 15, 2000, 1634-1639.
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dc_date_str 2000
dc_title_str Chemical defense against predation in an insect egg.
description The larva of the green lacewing (Ceraeochrysa cubana) (Neur tera, Chrysopidae) is a natural predator of eggs of UtethE ornatrix (Lepidoptera, Arctiidae), a moth that sequesters pyrrc idine alkaloids from its larval foodplant (Fabaceae, Crotalaria sp Utetheisa eggs are ordinarily endowed with the alkaloid. Alkale free Utetheisa eggs, produced experimentally, are pierced by larva with its sharp tubular jaws and sucked out. Alkaloid-lai eggs, in contrast, are rejected. When attacking an Utetheisa E cluster (numbering on average 20 eggs), the larva subjects it to inspection process. It prods and/or pierces a small number of el (on average two to three) and, if these contain alkaloid, it pas "negative judgement" on the remainder of the cluster and tu away. Such generalization on the part of the larva makes ser because the eggs within clusters differ little in alkaloid contE There is, however, considerable between-cluster variation in ( alkaloid content, so clusters in nature can be expected to rai widely in palatability. To check each cluster for acceptability m therefore be adaptive for the larva, just as it must be adaptive Utetheisa to lay its eggs in large clusters and to apportion alkal evenly among eggs of a cluster.
title Chemical defense against predation in an insect egg.
title_full Chemical defense against predation in an insect egg.
title_fullStr Chemical defense against predation in an insect egg.
title_full_unstemmed Chemical defense against predation in an insect egg.
title_short Chemical defense against predation in an insect egg.
title_sort chemical defense against predation in an insect egg.
publishDate 2000
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