Inherited Sterility in Progeny of Irradiated Male Cabbage Loopers1

North, D. T.; Holt, G. G.

doi:10.1093/jee/61.4.928

Cited by 51 publications

(20 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Translocations of a Z chromosome region carrying sexlinked recessive lethal mutations have been used to create balanced lethal strains in B. mori (Strunnikov 1975) and the Mediterranean flour moth, Ephestia kuehniella (Marec 1990), but were induced through the use of mutagens (North and Holt 1968). Naturally occurring chromosomal breakage and fusions have been reported in the Sonoran blue butterfly, Philotes sonorensis (Emmel et al 1973), that may be involved in the evolution of the supernumerary A and B chromosomes (Maeki 1958).…”

Section: Discussionmentioning

confidence: 99%

A rearrangement of the Z chromosome topology influences the sex-linked gene display in the European corn borer, Ostrinia nubilalis

et al. 2011

View full text Add to dashboard Cite

Males are homogametic (ZZ) and females are heterogametic (WZ) with respect to the sex chromosomes in many species of butterflies and moths (insect order Lepidoptera). Genes on the Z chromosome influence traits involved in larval development, environmental adaptation, and reproductive isolation. To facilitate the investigation of these traits across Lepidoptera, we developed 43 degenerate primer pairs to PCR amplify orthologs of 43 Bombyx mori Z chromosome-linked genes. Of the 34 orthologs that amplified by PCR in Ostrinia nubilalis, 6 co-segregated with the Z chromosome anchor markers kettin (ket) and lactate dehydrogenase (ldh), and produced a consensus genetic linkage map of ~89 cM in combination with 5 AFLP markers. The O. nubilalis and B. mori Z chromosomes are comparatively co-linear, although potential gene inversions alter terminal gene orders and a translocation event disrupted synteny at one chromosome end. Compared to B. mori orthologs, O. nubilalis Z chromosome-linked genes showed conservation of tissuespecific and growth-stage-specific expression, although some genes exhibited species-specific expression across developmental stages or tissues. The O. nubilalis Z chromosome linkage map provides new tools for isolating quantitative trait loci (QTL) involved in sex-linked traits that drive speciation and it exposes genome rearrangements as a possible mechanism for differential gene regulation in Lepidoptera. Abstract Males are homogametic (ZZ) and females are heterogametic (WZ) with respect to the sex chromosomes in many species of butterflies and moths (insect order Lepidoptera). Genes on the Z chromosome influence traits involved in larval development, environmental adaptation, and reproductive isolation. To facilitate the investigation of these traits across Lepidoptera, we developed 43 degenerate primer pairs to PCR amplify orthologs of 43 Bombyx mori Z chromosomelinked genes. Of the 34 orthologs that amplified by PCR in Ostrinia nubilalis, 6 co-segregated with the Z chromosome anchor markers kettin (ket) and lactate dehydrogenase (ldh), and produced a consensus genetic linkage map of *89 cM in combination with 5 AFLP markers. The O. nubilalis and B. mori Z chromosomes are comparatively co-linear, although potential gene inversions alter terminal gene orders and a translocation event disrupted synteny at one chromosome end. Compared to B. mori orthologs, O. nubilalis Z chromosomelinked genes showed conservation of tissue-specific and growth-stage-specific expression, although some genes exhibited species-specific expression across developmental stages or tissues. The O. nubilalis Z chromosome linkage map provides new tools for isolating quantitative trait loci (QTL) involved in sex-linked traits that drive speciation and it exposes genome rearrangements as a possible mechanism for differential gene regulation in Lepidoptera.

show abstract

Section: Discussionmentioning

confidence: 99%

A rearrangement of the Z chromosome topology influences the sex-linked gene display in the European corn borer, Ostrinia nubilalis

et al. 2011

View full text Add to dashboard Cite

show abstract

“…No attempt was made to dissect mated females to conÞrm sperm transfer, based on the assumption that when a full complement of sperm is transferred and reaches the spermatheca of the female, a normal number of eggs will be deposited (North and Holt 1968a). In T. anartoides, females normally mated only once, and begin oviposition within an hour of completing mating, within the 24 h of emergence.…”

Section: Methodsmentioning

confidence: 99%

Effects of Substerilizing Doses of Gamma Radiation on Adult Longevity and Level of Inherited Sterility in <I>Teia anartoides</I> (Lepidoptera: Lymantriidae)

Wee

Suckling

Burnip³

et al. 2005

View full text Add to dashboard Cite

The effects of substerilizing doses of gamma radiation on the longevity and level of inherited sterility in the Australian moth Teia anartoides Walker were determined. Six day-old male pupae were treated with 0, 100, and 160 Gy of gamma radiation by using a 1.25 MeV Cobalt60 irradiation source. Laboratory studies of male longevity showed that radiation had little impact in adult moths of the P1, F1, and F2 generations. Inherited deleterious effects resulting from irradiation were observed in the progeny of F1 and F2 generations. Outcrosses between substerile parental males or their highly sterile male progeny to wild-type females did not affect female fecundity. However, adverse effects were observed for these crosses in the rates of successful egg hatch and postembryonic development. Fertility was always greater in out-crosses involving a P1 male than in any of the F1 out-crosses. F1 males were always more sterile than F1 females, and the level of sterility for the F1 and F2 generations was higher than that of the controls. The incidence of larval and pupal mortality was higher in the F2 than the F1 generation. A dose of 100 Gy had the highest success in inducing deleterious effects that were inherited through to the F2 generation. Our results indicated that the use of partially sterilizing doses of radiation has good potential as a selective strategy for management or eradication of T. anartoides.

show abstract

“…Induction of F 1 sterility by the transmission of complex chromosome translocations to the progeny of treated males was first suggested by North (1967) and North and Holt (1968) for Lepidoptera and by LaChance and Degrugillier (1969) for Hemiptera. More recently Tothová and Marec (2001) suggested three factors that might explain the higher level of sterility found in F 1 male progeny of Lepidoptera:…”

Section: Sex-specific Differences In Inherited Sterilitymentioning

confidence: 96%