scholarly journals Evaluation of Eleven Newly Acquired Asian Elms for Their Suitability to Adult Elm Leaf Beetle (Coleoptera: Chrysomelidae)

2001 ◽  
Vol 19 (2) ◽  
pp. 96-99
Author(s):  
Fredric Miller ◽  
George Ware
Keyword(s):  
Adult Female ◽  
Leaf Beetle ◽  
Host Suitability ◽  
Adult Males ◽  
Reference Species ◽  
Breeding Programs ◽  
Elm Leaf Beetle ◽  
Female Longevity ◽  
Males And Females ◽  
Laboratory Bioassays

Abstract Eleven newly introduced Asian elm species and one reference species were evaluated in no-choice laboratory bioassays for their suitability to the adult elm leaf beetle, Xanthogaleruca (= Pyrrhalta) luteola Müller. Adult female beetles laid significantly more eggs on U. bergmanniana, U. bergmanniana var. lasiophylla, U. castaneifolia, U. gaussenii, U. lamellosa, and U. pumila, indicating these species were the most suitable for ELB. The least suitable species for adult beetle feeding and reproduction were U. chenmoui, U. elongata, U. glaucescens, U. propinqua, U. propinqua var. suberosa, and U. szechuanica. Adult female beetles laid eggs within 7–10 days, or 4 days earlier, on the most suitable elms compared with beetles feeding on the least suitable elms. Adult male and female longevity was significantly affected by host suitability with adult males and females living nearly twice as long on the most suitable elms compared to the less suitable elms. Least suitable species U. chenmoui, U. elongata, U. glaucescens, U. propinqua, and U. szechuanica offer resistance to elm leaf beetle and show promise for future elm breeding programs.

scholarly journals Feeding and Ovipositional Responses of Adult Elm Leaf Beetle (Coleoptera: Chrysomelidae) to Simple and Complex Asian Elm Hybrid Selections

2001 ◽  
Vol 19 (3) ◽  
pp. 128-131
Author(s):  
Fredric Miller ◽  
George Ware
Keyword(s):  
Leaf Tissue ◽  
Leaf Beetle ◽  
Adult Longevity ◽  
Adult Males ◽  
Breeding Programs ◽  
Leaf Beetles ◽  
Elm Leaf Beetle ◽  
The Mean ◽  
Ulmus Davidiana ◽  
Preovipositional Period

Abstract Nine recently developed simple and complex Asian hybrids with Ulmus davidiana, U. japonica, U. parvifolia, U. pumila, U. szechuanica and/or U. wilsoniana parentage were evaluated in no-choice laboratory bioassays for their suitability for the adult elm leaf beetle, Xanthogaleruca luteola (Müller). Suitability of each biotype was defined by the mean percentage of leaf tissue removed, the mean percentage of females ovipositing, and the mean number of eggs laid per female. Adult female beetles laid significantly more eggs on U. pumila (control) and the complex hybrid U. ‘Morton Red Tip’-Danada Charm™ indicating their greater suitability for ELB. The least suitable single and complex hybrids for adult elm leaf beetles as indicated by feeding and reproduction were U. davidiana x U. ‘ Morton’ -Accolade™ and U. szechuanica x U. japonica. Females feeding on more suitable elms oviposited 3 days earlier than females feeding on less suitable elms. Adult beetle fecundity was correlated with the length of the preovipositional period but mean percentage of females ovipositing was not correlated with length of the preovipositional period. Adult males and females lived approximately 4 days longer on the more suitable elms than on less suitable elms but adult longevity was not correlated with suitability. The percentage of leaf tissue removed by adult beetles on the different biotypes was correlated with beetle fecundity. Less suitable selections of U. davidiana x U. ‘ Morton’ -Accolade™ and U. szechuanica x U. japonica seem promising for future elm breeding programs.

scholarly journals Host Suitability of Three Asiatic Elms to the Elm Leaf Beetle (Xanthogaleruca luteola) (Coleoptera: Chrysomelidae)

1986 ◽  
Vol 4 (2) ◽  
pp. 44-46
Author(s):  
Richard W. Hall ◽  
Curtis E. Young
Keyword(s):  
Leaf Beetle ◽  
Host Suitability ◽  
Ulmus Pumila ◽  
Sources Of Resistance ◽  
Suitable Host ◽  
Breeding Programs ◽  
Elm Leaf Beetle ◽  
Xanthogaleruca Luteola

Larval and adult elm leaf beetle, Xanthogaleruca luteola (Muller) were fed leaves of Ulmus pumila L., U. parvifolia Jacq. and U. wilsoniana Schneid. to determine host suitability. U. pumila was a suitable host, while U. parvifolia and U. wilsoniana were found to be poor hosts. U. parvifolia and U. wilsoniana should be considered for urban plantings where elm leaf beetle defoliation is severe, and as sources of resistance in elm breeding programs.

EFFECT OF SEX AND AGE AT GONADECTOMY ON THE SEBACEOUS RESPONSE TO PROGESTERONE

1977 ◽  
Vol 73 (1) ◽  
pp. 67-70 ◽  
Author(s):  
SAM SHUSTER ◽  
WENDY M. HINKS ◽  
A. J. THODY
Keyword(s):  
Adult Female ◽  
Adult Male ◽  
Female Rats ◽  
Male Rats ◽  
Adult Males ◽  
Adult Rat ◽  
Sebum Production ◽  
Males And Females ◽  
Sebum Secretion

SUMMARY The effect of progesterone on the rate of sebum secretion was examined in intact and gonadectomized rats. In intact, adult, male rats, progesterone administered for 3 weeks decreased sebum secretion; after castration of adult males, progesterone increased sebum secretion and an even greater response occurred in males castrated at 21 days of age. In intact, adult, female rats progesterone slightly increased sebum production. As in the male, the response was affected by the time of gonadectomy, a greater response occurring after spaying at 21 days compared with 10 weeks of age. Thus, the response to progesterone in the adult rat differs in intact males and females and is affected by changes in the endocrine environment induced by gonadectomy, especially near the time of puberty.

Larvae of female Caecognathia sp. (Isopoda: Gnathiidae) are attracted to male adults and prolong their larval phase in the absence of males

2019 ◽  
Vol 40 (2) ◽  
pp. 156-161
Author(s):  
Chiaki Hayashi ◽  
Katsuhiko Tanaka ◽  
Euichi Hirose
Keyword(s):  
Sex Ratio ◽  
Adult Female ◽  
Light Trap ◽  
Experimental Chamber ◽  
Adult Males ◽  
Larval Phase ◽  
The Third ◽  
Third Stage ◽  
Males And Females ◽  
Induction Of Metamorphosis

Abstract The interaction between males and females (adults and/or larvae) of Caecognathia sp., a parasite of fishes, was studied in the laboratory to investigate the attraction of the opposite sexes and the induction of metamorphosis to adults. We reared the third-stage larvae collected by a light trap to develop them into adults. Their sex ratio was 104 males to 100 females, suggesting that females and males have similar fitness. The attraction experiments using an experimental chamber demonstrate that adult males attract female larvae that were also attracted by the dichloromethane extract of males but not the female extract. The males also induce the praniza females to develop into adults. When there are no males present, females can prolong the larval phase and moreover can spontaneously start to develop into adults after the prolonged larval phase. As in other isopods, the gnathiid female is supposed to be able to copulate immediately after metamorphosis, and the timing of metamorphosis is therefore crucial. The prolongable larval phase in the gnathiid female could be an adaptation to a polygynous, semelparous system and brief copulatory phase after the metamorphosis into adult female.

scholarly journals Preference for and Suitability of Selected Elms, Ulmus spp. and Their Hybrids for the Elm Leaf Beetle, (Pyrrhalta luteola Coleoptera: Chrysomelidae)

1994 ◽  
Vol 12 (4) ◽  
pp. 231-235
Author(s):  
Fredric Miller ◽  
George Ware
Keyword(s):  
Multiple Choice ◽  
Leaf Beetle ◽  
Feeding Preference ◽  
Dutch Elm Disease ◽  
Adult Longevity ◽  
Shade Trees ◽  
Breeding Programs ◽  
Elm Leaf Beetle ◽  
Choice Feeding ◽  
Species Hybrids

Abstract Selected elms Ulmus spp. and their hybrids growing at the Morton Arboretum, Lisle, IL were evaluated in the laboratory for feeding preference by the elm leaf beetle, Pyrrhalta luteola (Muller). Results from the single-choice and multiple-choice feeding studies showed that U. szechuanica was the least suitable for feeding and reproduction by the adult elm leaf beetle. The hybrids U. pumila x U. parvifolia and U. pumila x U. americana, and U. pumila (control) appeared to be highly suitable for feeding and reproduction by the adult elm leaf beetle. Adult longevity and the pre-ovipositional period appeared to be a function of suitability as adults feeding on U. szechuanica had the shortest longevity and the longest pre-ovipositional period. The converse was also true. Results from multiple-choice studies were consistent with the single-choice studies. The intermediately suitable species/hybrids of U. japonicawilsoniana x U. pumila, U. Japonica, U. macrocarpa, and U. wilsoniana show promise for further elm breeding programs. Further studies are needed to evaluate hybrid crosses of the intermediately and least preferred elms as potential sources of shade trees resistant to Dutch elm disease and not preferred by the elm leaf beetle.

Size-At-Age Variability and Sexual Dimorphism of Morphometric Characteristics in the Late Ontogenesis of the Marsh Frog, Pelophylax Ridibundus (Anura, Ranidae), from Terrytory of Crimea

2019 ◽  
Vol 53 (4) ◽  
pp. 325-334
Author(s):  
V. N. Peskov ◽  
N. A. Petrenko ◽  
V. Yu. Reminnyi
Keyword(s):  
Age Groups ◽  
The Body ◽  
Adult Males ◽  
Morphometric Characteristics ◽  
Morphometric Characters ◽  
Mean Values ◽  
Marsh Frog ◽  
Males And Females ◽  
Size At Age ◽  
Linear Body

Abstract We study size-at-age and sexual variability of morphometric characteristics of the marsh frog. According to the size of the body, males were divided into three size-age groups (juvenis, subadultus, adultus), females — into four groups (juvenis, subadultus, adultus, adultus-I). We found that the chronological age of frogs (skeletochronology) does not always correspond to their biological age (size and proportions of the body). We noted that the semi-adult males are reliably larger than females by mean values of 26 studied morphometric characters. Males and females of “adultus” group do not differ by linear body size, significant differences were found in body proportions (7 characters). For the females of “adultus-I” group, the mean values of 26 characters are significantly larger than for “adultus” males. The results of our study showed that with the age of the marsh frog, the level of exhibition, directionality and structure of morphometric sex differences changes.

scholarly journals Sex Difference in Self-Reported Sexual Functioning Among Frail Older Adults

2020 ◽  
Vol 4 (Supplement_1) ◽  
pp. 313-313
Author(s):  
Brianne Olivieri-Mui ◽  
Sandra Shi ◽  
Ellen McCarthy ◽  
Dae Kim
Keyword(s):  
Older Adults ◽  
Logistic Regression ◽  
Sex Differences ◽  
Sexual Function ◽  
Older Adult ◽  
Sexual Functioning ◽  
Social Life ◽  
Well Being ◽  
Adult Males ◽  
Males And Females

Abstract Frailty may differentially impact how older adult males and females perceive sexual functioning, an important part of well-being. We assessed the level of frailty (robust, pre-frail, frail) for anyone with data on 11 sexual functioning questions asked in wave 2 of the National Social Life, Health, and Aging Project, 2010-2011 (n=2060). Questions covered five domains: overall sexual function (OSF), sexual function anxiety (SFA), changes in sexual function (CSF), erectile/vaginal dysfunction (EVD), and masturbation. Logistic regression identified sex differences in frailty and reporting worse sexual functioning. Linear regression predicted the number of domains reported as worse. Among males (n=1057), pre-frailty meant higher odds of reporting SFA (OR 1.8 95%CI 1.2-6.6), CSF (OR 1.7 95%CI 1.1-2.7), and EVD (OR 1.5 95%CI 1.0-2.2). Among females (n=1003), there was no difference in reporting by frailty. Females were more likely to report worse OSF (Robust: OR 7.4, 95%CI 4.8-11.4; Pre-frail: OR 6.2, 95%CI 3.9-9.9; Frail: OR 3.4 95%CI 1.7-6.6), but less likely to report SFA (Robust OR .3, 95%CI .2-.5; Pre-frail OR .2, 95%CI .1-.3; Frail OR .2 95%CI .1-.3). Pre-frail and frail females reported fewer domains as worse (Pre-frail coefficient -0.21 SE 0.09, Frail -0.43 SE 0.14). As frailty worsened, males reported more domains as worse (Pre-frail 0.24 SE 0.07, Frail 0.29 SE 0.08). Self-reported sexual functioning differs by sex at all levels of frailty, and reporting by males, but not females, changes with frailty. Providers should be aware that sexual functioning is of importance to both sexes despite varying degrees of frailty.

scholarly journals Multispecies Transcriptomics Data Set of Brugia malayi, Its Wolbachia Endosymbiont wBm, and Aedes aegypti across the B. malayi Life Cycle

2018 ◽  
Vol 7 (18) ◽  
Author(s):  
Matthew Chung ◽  
Laura Teigen ◽  
Silvia Libro ◽  
Robin E. Bromley ◽  
Nikhil Kumar ◽  
...  
Keyword(s):  
Life Cycle ◽  
Aedes Aegypti ◽  
Brugia Malayi ◽  
Adult Males ◽  
Data Set ◽  
Content Type ◽  
Transcriptomics Data ◽  
Wolbachia Endosymbiont ◽  
Males And Females ◽  
Stage 1

Here, we present a comprehensive transcriptomics data set of Brugia malayi, its Wolbachia endosymbiont wBm, and its vector host. This study samples from 16 stages across the entire B. malayi life cycle, including stage 1 through 4 larvae, adult males and females, embryos, immature microfilariae, and mature microfilariae.

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