SEXUAL BEHAVIOR IN THE BLISTER BEETLE GENUS CYSTEODEMUS (COLEOPTERA: MELOIDAE)

1977 ◽  
Vol 109 (3) ◽  
pp. 389-396 ◽  
Author(s):  
John D. Pinto
Keyword(s):  
Sexual Behavior ◽  
Simple Form ◽  
Female Receptivity ◽  
Mating Period ◽  
Previous Mating ◽  
Blister Beetle

AbstractSexual behavior in the two species of Cysteodemus LeConte consists of: (1) a simple form of courtship that lacks an elaborate tactual display, (2) a prolonged mating period during which the male remains mounted on the female, (3) high levels of female receptivity regardless of previous mating, and (4) postcopulatory behavior. This behavior represents a condition intermediate between that found in the Meloinae and Nemognathinae, the two major subfamilies of blister beetles.

The ecology of female receptivity in the territorial butterfly Hypolimnas bolina (L.) (Nymphalidae): implications for mate location by males

2001 ◽  
Vol 49 (3) ◽  
pp. 203 ◽  
Author(s):  
Darrell J. Kemp
Keyword(s):  
Refractory Period ◽  
Mate Location ◽  
Australian Population ◽  
Female Receptivity ◽  
Mating Period ◽  
Per Se ◽  
Territory Selection ◽  
General Explanation

Many male insects aggressively defend specific perching sites containing larval resources. There are three main explanations for how this behaviour could contribute to increased matings: perching males may aim to encounter (1) eclosing or freshly eclosed virgin females, (2) previously mated, ovipositing females, or (3) receptive females that visit these sites either specifically to mate or for other reasons. I evaluated these hypotheses by investigating the timing of post-eclosion female receptivity and the extent of polyandry within an Australian population of the butterfly Hypolimnas bolina (L.) (Lepidoptera: Nymphalidae). This species represents the group of butterflies in which males defend specific, geographically prominent, sites that overlap with the distribution of larval resources. Freshly emerged female H. bolina refrained from mating until their ovaries were close to maturation, resulting in a pre-mating period of 4–8 days. The presence of this substantial refractory period rules out the hypothesis that males defend pupation sites with the aim of mating with eclosing or freshly eclosed females. Secondly, almost 90% of females within the studied population carried only one spermatophore, a finding that mediates against the possibility that most perching males target (already mated) ovipositing females. The ‘rendezvous-site’ hypothesis is the most likely general explanation for territoriality in H. bolina; however, it remains unclear whether the distribution of larval hostplants per se has a primary influence on territory selection by males in this species.

Background Fitting in the Low-Loss Region of Electron Energy Loss Spectra

1990 ◽  
Vol 48 (2) ◽  
pp. 56-57
Author(s):  
C P Scott ◽  
A J Craven ◽  
C J Gilmore ◽  
A W Bowen
Keyword(s):  
Energy Loss ◽  
Multiple Scattering ◽  
Simple Form ◽  
Single Scattering ◽  
Low Loss ◽  
Characteristic Energy ◽  
Normal Method ◽  
Fitting In ◽  
Electron Energy Loss ◽  
Electron Energy Loss Spectra

The normal method of background subtraction in quantitative EELS analysis involves fitting an expression of the form I=AE-r to an energy window preceding the edge of interest; E is energy loss, A and r are fitting parameters. The calculated fit is then extrapolated under the edge, allowing the required signal to be extracted. In the case where the characteristic energy loss is small (E < 100eV), the background does not approximate to this simple form. One cause of this is multiple scattering. Even if the effects of multiple scattering are removed by deconvolution, it is not clear that the background from the recovered single scattering distribution follows this simple form, and, in any case, deconvolution can introduce artefacts.The above difficulties are particularly severe in the case of Al-Li alloys, where the Li K edge at ~52eV overlaps the Al L2,3 edge at ~72eV, and sharp plasmon peaks occur at intervals of ~15eV in the low loss region. An alternative background fitting technique, based on the work of Zanchi et al, has been tested on spectra taken from pure Al films, with a view to extending the analysis to Al-Li alloys.

1625: Role of Estrogen Receptor β in the Regulation of Sexual Behavior in Male Mice

2004 ◽  
Vol 171 (4S) ◽  
pp. 429-429
Author(s):  
Masayoshi Nomura ◽  
Naohiro Fujimoto ◽  
Donald W. Pfaff ◽  
Sonoko Ogawa ◽  
Tetsuro Matsumoto
Keyword(s):  
Estrogen Receptor ◽  
Sexual Behavior ◽  
Estrogen Receptor Β ◽  
Male Mice

Brief Report. The PCL-R and Gender

2000 ◽  
Vol 16 (3) ◽  
pp. 147-149 ◽  
Author(s):  
Martin Grann
Keyword(s):  
Gender Differences ◽  
Sexual Behavior ◽  
Discriminant Analysis ◽  
Juvenile Delinquency ◽  
Violent Offenders ◽  
Matched Pairs ◽  
Psychopathy Checklist ◽  
Psychopathy Checklist Revised ◽  
And Gender

Summary: Hare's Psychopathy Checklist - Revised (PCL-R; Hare, 1991 ) was originally constructed for use among males in correctional and forensic settings. In this study, the PCL-R protocols of 36 matched pairs of female and male violent offenders were examined with respect to gender differences. The results indicated a few significant differences. By means of discriminant analysis, male Ss were distinguished from their female counterparts through their relatively higher scores on “callous/lack of empathy” (item 8) and “juvenile delinquency” (item 18), whereas the female Ss scored relatively higher on “promiscuous sexual behavior” (item 11). Some sources of bias and possible implications are discussed.

Parenting and Adolescents’ Sexual Development in Western Societies

2011 ◽  
Vol 16 (1) ◽  
pp. 21-31 ◽  
Author(s):  
Hanneke de Graaf ◽  
Ine Vanwesenbeeck ◽  
Liesbeth Woertman ◽  
Wim Meeus
Keyword(s):  
Sexual Behavior ◽  
Parenting Styles ◽  
Sexual Development ◽  
Parental Support ◽  
Empirical Studies ◽  
Sexual Practices ◽  
Psychosexual Development ◽  
First Sexual Intercourse ◽  
Parenting Influences ◽  
Reciprocal Associations

This review examines associations between parenting styles and the psychosexual development of adolescents. Methods and results of empirical studies of associations between parental support, control, and knowledge and the sexual behavior and sexual health of adolescents are described and evaluated. The results show that, in general, higher scores on support, control, and knowledge relate to a delay of first sexual intercourse, safer sexual practices, and higher sexual competence. Despite the vast amount of literature on this subject, the majority of these studies focus on single dimensions of parenting and unidirectional parenting influences. This review generates hypotheses regarding interactions of different parenting styles and reciprocal associations between parents and their children. There is a need for more dynamic, dialectical studies of parenting, and children’s sexual development.

Prospective sexual behavior.

1984 ◽  
Vol 39 (11) ◽  
pp. 1324-1325
Author(s):  
Saul Rosenzweig
Keyword(s):  
Sexual Behavior

Managing Sexual Behavior Problems

2000 ◽  
Vol 45 (2) ◽  
pp. 219-221
Author(s):  
William N. Friedrich
Keyword(s):  
Sexual Behavior ◽  
Behavior Problems ◽  
Sexual Behavior Problems

History of Research in Mammalian Sexual Behavior

1983 ◽  
Vol 28 (7) ◽  
pp. 545-546
Author(s):  
Rae Silver
Keyword(s):  
Sexual Behavior ◽  
History Of Research ◽  
History Of
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