THE REPRODUCTIVE CYCLES OF MALE AND FEMALE LYTTA NUTTALLI (COLEOPTERA: MELOIDAE)

1976 ◽  
Vol 108 (10) ◽  
pp. 1125-1136 ◽  
Author(s):  
G. H. Gerber ◽  
N. S. Church
Keyword(s):  
Oocyte Maturation ◽  
Laboratory Experiments ◽  
Male And Female ◽  
The One ◽  
Basic Features ◽  
Reproductive Cycles

AbstractLaboratory experiments showed that female Lytta nuttalli Say are capable of developing and depositing more than one batch of eggs. The largest number of batches deposited by a female was 5. Batches laid by one female are the same size, and each batch represents one gonadotropic cycle. Most females lay every 4 to 8 days, the most frequent intervals between consecutive ovipositions being 5 and 6 days. The females copulate at least once before the first oviposition and usually again within 24 h after each oviposition. The first copulation stimulates oocyte maturation and probably also deposition of the first batch of eggs. Additional copulations are not needed for the development and deposition of subsequent egg batches, but appear to stimulate egg output. Sufficient spermatozoa are transferred to the female during the one or more copulations preceding the first oviposition to fertilize all the eggs she produces. The largest number of copulations by a male was 9. Males can copulate as frequently as every 24 h, but the most frequent intervals between copulations in virile males are 2 and 3 days. The basic features of the reproductive cycles of male and female L. nuttalli are found in other Meloinae and probably are characteristic of the subfamily. The fairly large quantities of spermatophoral materials from repeated copulations may be important in the nutrition of the female.

Spearman's Law of Diminishing Returns

2006 ◽  
Vol 27 (4) ◽  
pp. 199-207 ◽  
Author(s):  
Peter Hartmann
Keyword(s):  
Principal Axis ◽  
Age Groups ◽  
Principal Component ◽  
Longitudinal Survey ◽  
Male And Female ◽  
Two Samples ◽  
Diminishing Returns ◽  
The One ◽  
Armed Services ◽  
Principal Axis Factor

Spearman's Law of Diminishing Returns (SLODR) with regard to age was tested in two different databases from the National Longitudinal Survey of Youth. The first database consisted of 6,980 boys and girls aged 12–16 from the 1997 cohort ( NLSY 1997 ). The subjects were tested with a computer-administered adaptive format (CAT) of the Armed Services Vocational Aptitude Battery (ASVAB) consisting of 12 subtests. The second database consisted of 11,448 male and female subjects aged 15–24 from the 1979 cohort ( NLSY 1979 ). These subjects were tested with the older 10-subtest version of the ASVAB. The hypothesis was tested by dividing the sample into Young and Old age groups while keeping IQ fairly constant by a method similar to the one developed and employed by Deary et al. (1996) . The different age groups were subsequently factor-analyzed separately. The eigenvalue of the first principal component (PC1) and the first principal axis factor (PAF1), and the average intercorrelation of the subtests were used as estimates of the g saturation and compared across groups. There were no significant differences in the g saturation across age groups for any of the two samples, thereby pointing to no support for this aspect of Spearman's “Law of Diminishing Returns.”

scholarly journals Interactions between the WEE-1.3 kinase and the PAM-1 aminopeptidase in oocyte maturation and the early C. elegans embryo

2021 ◽  
Author(s):  
Dorothy Benton ◽  
Eva C Jaeger ◽  
Arielle Kilner ◽  
Ashley Kimble ◽  
Josh Lowry ◽  
...  
Keyword(s):  
Missense Mutation ◽  
Oocyte Maturation ◽  
Protective Role ◽  
C Elegans ◽  
Direct Target ◽  
The One ◽  
Actomyosin Cytoskeleton ◽  
Embryonic Viability ◽  
Anterior Posterior

Abstract Puromycin-sensitive aminopeptidases are found across phyla and are known to regulate the cell-cycle and play a protective role in neurodegenerative disease. PAM-1 is a puromycin-sensitive aminopeptidase important for meiotic exit and polarity establishment in the one-cell Caenorhabditis elegans embryo. Despite conservation of this aminopeptidase, little is known about its targets during development. In order to identify novel interactors, we conducted a suppressor screen and isolated four suppressing mutations in three genes that partially rescued the maternal-effect lethality of pam-1 mutants. Suppressed strains show improved embryonic viability and polarization of the anterior-posterior axis. We identified a missense mutation in wee-1.3 in one of these suppressed strains. WEE-1.3 is an inhibitory kinase that regulates maturation promoting factor. While the missense mutation suppressed polarity phenotypes in pam-1, it does so without restoring centrosome-cortical contact or altering the cortical actomyosin cytoskeleton. To see if PAM-1 and WEE-1.3 interact in other processes, we examined oocyte maturation. While depletion of wee-1.3 causes sterility due to precocious oocyte maturation, this effect was lessened in pam-1 worms, suggesting that PAM-1 and WEE-1.3 interact in this process. Levels of WEE-1.3 were comparable between wild-type and pam-1 strains, suggesting that WEE-1.3 is not a direct target of the aminopeptidase. Thus, we have established an interaction between PAM-1 and WEE-1.3 in multiple developmental processes and have identified suppressors that are likely to further our understanding of the role of puromycin-sensitive aminopeptidases during development.

scholarly journals Características psicológicas relevantes para el rendimiento deportivo: diferencias de género en fútbol juvenil

2021 ◽  
Vol 21 (2) ◽  
pp. 127-137
Author(s):  
Aurelio Olmedilla ◽  
Marta Cánovas ◽  
Belén Olmedilla-Caballero ◽  
Enrique Ortega
Keyword(s):  
Female Athletes ◽  
Psychological Characteristics ◽  
Soccer Players ◽  
Sports Performance ◽  
Cross Sectional ◽  
Male And Female ◽  
Youth Soccer ◽  
Track Record ◽  
The One ◽  
The Impact

El estudio de los factores psicológicos relacionados con el rendimiento deportivo tiene un importante recorrido en la literatura científica. Conocer si existen diferencias entre hombres y mujeres deportistas, cuáles son estas, y en qué aspectos se manifiestan es una cuestión que podría ayudar a mejorar la labor de entrenadores y técnicos deportivos. El objetivo de este estudio es determinar si existen diferencias de género en el perfil psicológico de futbolistas juveniles relacionado con el rendimiento deportivo. Se utilizó un diseño descriptivo transversal. La muestra objeto de estudio estuvo formada por un total de 329 jugadores juveniles de fútbol (46.8% varones y 53,2% mujeres), con una edad media de 17.02 (±1.50) años;. Para la evaluación de las características psicológicas se utilizó el Cuestionario Características Psicológicas Relacionadas con el Rendimiento Deportivo (CPRD). Los resultados de este estudio indican que existen diferencias estadísticamente significativas entre chicos y chicas en control de estrés (CE), influencia de la evaluación del rendimiento (IER) y en cohesión de equipo (CH). Los jugadores chicos manifiestan puntuaciones mayores que las jugadoras chicas en CE, es decir, gestionan mejor el estrés propio de la competición, y en IER, es decir, los jugadores chicos gestionan mejor que las jugadoras chicas el impacto que supone la evaluación de su rendimiento, el que hacen los otros (entrenadores, compañeros, padres/madres, etc.) y el que se hace a sí mismo. Sin embargo, las jugadoras chicas presentan mejores puntuaciones en CH, es decir, manifiestan una mayor tendencia a trabajar en grupo y fortalecer el equipo. The study of psychological factors related to sports performance has an important track record in the scientific literature. Knowing if there are differences between male and female athletes, what they are, and in what aspects they manifest is an issue that could help improve the work of coaches and sports technicians. The aim of this study is to determine if there are gender differences in the psychological profile of youth soccer players related to sports performance. A descriptive cross-sectional design was used. The sample under study was formed by a total of 329 youth soccer players (46.8% male and 53,2% female), with an average age of 17.02 (± 1.50) years. The Psychological Characteristics Questionnaire Related to Sports Performance (CPRD) was used to evaluate psychological characteristics. The results of this study indicate that there are statistically significant differences between male and female in stress control (CE), influence of performance evaluation (IER) and in team cohesion (CH). The male players show higher scores than the female players in CE, that is, they better manage the stress of the competition, and in IER, that is, the male players manage better than the female players the impact of evaluating their performance, the one that others do (coaches, partners, fathers / mothers, etc.) and the one that makes itself. However, female players have better CH scores, that is, they show a greater tendency to work in groups and strengthen the team. O estudo de fatores psicológicos relacionados ao desempenho esportivo tem um histórico importante na literatura científica. Saber se existem diferenças entre atletas masculinos e femininos, o que são e em que aspectos eles se manifestam é uma questão que pode ajudar a melhorar o trabalho de treinadores e técnicos esportivos. O objetivo deste estudo é determinar se existem diferenças de gênero no perfil psicológico de jovens jogadores de futebol relacionados ao desempenho esportivo. Foi utilizado um desenho descritivo de corte transversal. A amostra estudada foi composta por um total de 329 jogadores de futebol juvenil (46,8% masculino e 53,2% feminino), com idade média de 17,02 (± 1,50) anos. O Questionário de Características Psicológicas Relacionadas ao Desempenho Esportivo (CPRD) foi utilizado para avaliar as características psicológicas. Os resultados deste estudo indicam que existem diferenças estatisticamente significantes entre meninos e meninas no controle do estresse (EC), influência da avaliação de desempenho (IER) e na coesão da equipe (HC). Os jogadores pequenos apresentam pontuações mais altas do que as jogadoras da CE, ou seja, administram melhor o estresse da competição, e no IER, ou seja, os jogadores pequenos gerenciam melhor do que as jogadoras o impacto de avaliar seu desempenho , o que os outros fazem (treinadores, parceiros, pais / mães, etc.) e o que se faz. No entanto, as jogadoras têm melhores pontuações no HC, ou seja, mostram maior tendência a trabalhar em grupo e fortalecer a equipe

scholarly journals Asymmetrical deposition and modification of histone H3 variants are essential for zygote development

2021 ◽  
Vol 4 (8) ◽  
pp. e202101102
Author(s):  
Machika Kawamura ◽  
Satoshi Funaya ◽  
Kenta Sugie ◽  
Masataka G Suzuki ◽  
Fugaku Aoki
Keyword(s):  
Dna Replication ◽  
Mrna Expression ◽  
Detrimental Effect ◽  
Histone H3 ◽  
Replication Timing ◽  
Male And Female ◽  
Zygote Development ◽  
The One ◽  
Dna Replication Timing ◽  
Incorporation Efficiency

The pericentromeric heterochromatin of one-cell embryos forms a unique, ring-like structure around the nucleolar precursor body, which is absent in somatic cells. Here, we found that the histone H3 variants H3.1 and/or H3.2 (H3.1/H3.2) were localized asymmetrically between the male and female perinucleolar regions of the one-cell embryos; moreover, asymmetrical histone localization influenced DNA replication timing. The nuclear deposition of H3.1/3.2 in one-cell embryos was low relative to other preimplantation stages because of reduced H3.1/3.2 mRNA expression and incorporation efficiency. The forced incorporation of H3.1/3.2 into the pronuclei of one-cell embryos triggered a delay in DNA replication, leading to developmental failure. Methylation of lysine residue 27 (H3K27me3) of the deposited H3.1/3.2 in the paternal perinucleolar region caused this delay in DNA replication. These results suggest that reduced H3.1/3.2 in the paternal perinucleolar region is essential for controlled DNA replication and preimplantation development. The nuclear deposition of H3.1/3.2 is presumably maintained at a low level to avoid the detrimental effect of K27me3 methylation on DNA replication in the paternal perinucleolar region.

Architecture of Evolution

2021 ◽  
Author(s):  
Alla Packevich
Keyword(s):  
Planetary System ◽  
Conflict Situation ◽  
Point Of View ◽  
Science Students ◽  
Present Stage ◽  
Male And Female ◽  
Different Types ◽  
New Energy ◽  
The One ◽  
Insight Into

The monograph, on the one hand, examines the period of development of the descending cycle of evolution and the associated progressive changes that show the irreversibility of the processes of formation of the planetary system. The end of one cycle and the beginning of another leads to the transformation of the system of life and the expansion of consciousness at a new energy level. On the other hand, the questions of potential opportunities for the development of the ascending phase of evolution, which goes both along the path of complexity of the organization and along the path of diversity, are considered. In the ascending evolutionary stream, what has been differentiated into the corresponding levels in the descending cycle is brought together and thus prepared to enter into new, more perfect forms of unity. It is shown that the development of humanity along its entire path depends on the interaction of energies of various forms and potentials. Understanding the relationships between different types of energy and their use provides insight into many important issues in the evolution of society. The material introduces the modern features of the existence of the male and female sexes from the energy point of view. The idea of a way out of the current conflict situation that has arisen between the sexes at the present stage of evolution is proposed. It will be useful for those interested in the problems of scientific knowledge, architects, philosophers,historians, physicists and methodologists of science, students and students of secondary schools.

The Italian Master in Clinical Bioethics Consultation: 2013-2020 Experience

2021 ◽  
Vol 66 (Special Issue) ◽  
pp. 152-152
Author(s):  
Dario Sacchini ◽  
◽  
Pietro Refolo ◽  
Barbara Corsano ◽  
Mario Picozzi ◽  
...  
Keyword(s):  
Ethics Consultation ◽  
Learning Needs ◽  
Clinical Settings ◽  
Local Health ◽  
University Campus ◽  
Clinical Bioethics ◽  
Sacred Heart ◽  
Health And Social Care ◽  
The One ◽  
Basic Features

"This work is aimed at critically illustring the eight-year experience of the Master in “Clinical Bioethics Consultation” (2013-2020). This advanced second-level Master was promoted in 2013 by the Catholic University of the Sacred Heart of Rome, and co-worked by other Italian clinical as well as academic institutions (University Campus Bio-medico of Rome, Insubria University of Varese, “Federico II” University of Naples, Lanza Foundation of Padua, Local Health and Social Care Unit n. 7 (ULSS) of Veneto Region, Treviso; Ospedale San Giovanni Calibita Fatebenefratelli – Isola Tiberina, Rome, and Italian Group for clinical ethics consultation (GIBCE)). To this aim, it first will discuss two points: on the one hand, an epistemological one, i.e. the justification of the activity of ethics consultant in clinical settings supported by the authors; on the other hand, a pedagogical one, i.e. the identification of the learning needs clinical bioethics gives birth to. The second part of the work will focus on the experience of the Master, explaining its basic features (objectives, methods, contents, evaluation tools, etc), offering a critical review, and identifying the challenges this initiative has to face in the next future. "

A feminist reflection on male victims of conflict-related sexual violence

2020 ◽  
pp. 135050682090498
Author(s):  
Louise du Toit ◽  
Elisabet le Roux
Keyword(s):  
Sexual Violence ◽  
Armed Conflict ◽  
Social Effects ◽  
Male Victims ◽  
Male And Female ◽  
Female Victims ◽  
Humanitarian Response ◽  
Patriarchal Ideology ◽  
The World ◽  
The One

The authors identify a pervasive tendency, especially in the world of development and humanitarian response, to hierarchize or prioritize certain types of victims of sexual violence in armed conflict over others. Within this broader context, they focus on what a considered feminist acknowledgement of male victims of conflict-related sexual violence (CRSV) should look like. On the one hand, they emphasize that one and the same patriarchal template is used to humiliate and shame male and female victims of sexual violence alike. On the other, they urge that in light of the pervasiveness of patriarchal ideology and its harmful and wide-reaching social effects, the time is not yet ripe to endorse a gender-blind approach to CRSV.

Nietzsche’s Therapy of Therapy

2017 ◽  
Vol 46 (1) ◽  
Author(s):  
Marta Faustino
Keyword(s):  
Western Culture ◽  
The Self ◽  
The Other ◽  
Philosophical Tradition ◽  
Other Hand ◽  
The One ◽  
Basic Features

AbstractThis paper examines Nietzsche’s relation to the therapeutic philosophical tradition paradigmatically represented by the Hellenistic schools. On the one hand, given his project of rehabilitating Western culture and his understanding of the philosopher as a “physician of culture”, Nietzsche seems also to hold a therapeutic understanding of philosophy; on the other hand, he is extremely critical of any (philosophical, moral or religious) attempt to heal mankind. This paper does not aim to solve this tension but rather characterizes Nietzsche’s endeavor in this respect as a therapy of therapy. Through analysis of a) the basic features of the Hellenistic conception of philosophy, b) Nietzsche’s development of the analogy of the “philosophical physician”, c) his diagnosis of culture, and d) his criticism of previous therapists, I show that Nietzsche can be formally included in this tradition of thought, even if this inclusion has implications for the tradition itself. As I suggest, given the self-referentiality of Nietzsche’s therapy, his inclusion in this tradition might in fact simultaneously entail its own self-suppression.

¡A mi no me manda nadie!

Pragmatics ◽  
2000 ◽  
Vol 10 (1) ◽  
pp. 61-85 ◽  
Author(s):  
Marcia Farr
Keyword(s):  
Private Property ◽  
Hard Work ◽  
The Other ◽  
Mutual Support ◽  
Strong Ties ◽  
Male And Female ◽  
Distinct Subgroup ◽  
North Americans ◽  
History Of ◽  
The One

Rancheros are presented as a distinct subgroup of Mexican campesinos ‘peasants’ who enact a liberal individualist ideology that centrally values private property, especially land, and hard work as the legitimate route to el progreso ‘progress’. Both male and female rancheros are tough and independent “ranch” people who construct their identities in contrast to indigenas ‘Indians’ on the one hand (whom rancheros view as communally-oriented), and catrines ‘city people’ (whom rancheros see as fancily-dressed, and acting, “dandies”) on the other. A history of frontier isolation and mobility in la sociedad ranchera ‘ranchero society’ facilitated the development of both autonomy and strong ties of reciprocity for mutual support in hostile conditions, as well as common ways of living, dressing, and speaking. This valuing of both autonomy and affiliation undermines the often-invoked dichotomy between “Mexicans” and “North Americans” as being communal, or group-oriented, and individualistic, or self-oriented, respectively. Rather than predominantly one or the other, rancheros value both autonomy and affiliation. This historically constructed identity is enacted in a particular way of speaking, franqueza ‘frankness’, direct, straightforward, candid language that goes directly to a point. Informal verbal performances by members of these families within their homes, both in Chicago and Mexico, are analyzed for their construction of ranchero identity through franqueza.

scholarly journals Anuran fauna of the Lesotho Highlands in the Khatse Dam catchment area and Jorodane River region

Koedoe ◽  
1996 ◽  
Vol 39 (2) ◽  
Author(s):  
D.E. Van Dijk
Keyword(s):  
Catchment Area ◽  
Wide Spread ◽  
The South ◽  
South Eastern ◽  
South West ◽  
River Region ◽  
Probable Impact ◽  
Phase 1B ◽  
The One ◽  
Reproductive Cycles

Surveys were made of the anuran fauna of the Khatse Dam catchment area in the Lesotho Highlands, and of the region between the Central Mountains and the Thaba Putsoa Range which would be affected by Phase 1B of the Lesotho Highlands Water Scheme, if implemented. The Khatse Dam is at present filling. Seven species of anurans were encountered in the Khatse Dam catchment, and five of them also in the valley to the south-west. Four taxa occur all around central Lesotho, but one, the Gariep toad, has its south-eastern limit on the Drakensberg Escarpment, and another. Gray's frog, shows indications in Lesotho, as elsewhere, of being distinct from the typical taxon. Two taxa are endemic to the mountains of the Lesotho region, the one being more rheophilic and more wide-spread. The remaining anuran, previously unknown in Lesotho, is now recorded from the highly characteristic, strongly rheophilic tadpoles, as Heleophryne. The various available habitats and the associated anurans are reviewed. Features of the reproductive cycles, are noted. Dispersal and isolation are outlined. Reference is made to the most probable additions to the anuran fauna which further collecting might reveal. The probable impact of the Khatse Dam is discussed.

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