Tidal and Lunar Rhythmic Adaptations of Reproductive Activities in Invertebrate Species1

2015 ◽  
pp. 152-170 ◽  
Author(s):  
Dietrich Neumann
Keyword(s):  
Reproductive Activities

Reproductive Activities of Decapod Crustacea

1947 ◽  
Vol 81 (800) ◽  
pp. 392-398 ◽  
Author(s):  
Martin D. Burkenroad
Keyword(s):  
Decapod Crustacea ◽  
Reproductive Activities

scholarly journals The mating rate of Drosophila suzukii reduction due to reproductive interference from Drosophila melanogaster

2020 ◽  
Author(s):  
Yongzhuo Chen ◽  
Min Zhang ◽  
Wei Hu ◽  
Jing Li ◽  
Pengcheng Liu ◽  
...  
Keyword(s):  
Drosophila Melanogaster ◽  
Interspecific Competition ◽  
Population Size ◽  
Egg Laying ◽  
Significant Decline ◽  
Reproductive Interference ◽  
Drosophila Suzukii ◽  
Offspring Number ◽  
Successful Mating ◽  
Reproductive Activities

Abstract Background Drosophila suzukii is widely distributed. Research has revealed that the presence of Drosophila melanogaster can reduce the emergence and egg laying of D. suzukii. However, the reasons for these phenomena have not yet been reported. To investigate this issue, we sought to answer three questions: Can the presence of D. melanogaster reduce the longevity of D. suzukii? Does D. melanogaster dominate in larval interspecific competition with D. suzukii? Does reproductive interference occur between these species; i.e., do individuals of one species (e.g., D. suzukii) engage in reproductive activities with individuals of the other (e.g., D. melanogaster) such that the fitness of one or both species is reduced? Results The results showed that the adult offspring number of Drosophila suzukii was significantly reduced when this species was reared with Drosophila melanogaster. The larval interspecific competition had no significant effects on Drosophila suzukii longevity or population size. Surprisingly, Drosophila melanogaster imposed reproductive interference on males of Drosophila suzukii, which led to a significant decline in the rate of successful mating of the latter species. Conclusions The presence of Drosophila melanogaster causes the population size of Drosophila suzukii to decrease through reproductive interference, and the rate of successful mating in Drosophila suzukii is significantly reduced in the presence of Drosophila melanogaster.

scholarly journals STRATEGI NAFKAH PEREMPUAN NELAYAN TERHADAP PENDAPATAN KELUARGA

2016 ◽  
Vol 3 (2) ◽  
Author(s):  
Nina Evi Nur Laila ◽  
Siti Amanah
Keyword(s):  
Family Income ◽  
Financial Security ◽  
Family Needs ◽  
Livelihood Strategy ◽  
Purposive Sampling ◽  
Reproductive Activities

The livelihoods of fishery households are highly vulnerable to fishery sources due to their nature-depending catchments, fishery households in SendangBiru coastal for example. This study focused to analyse the livelihood strategy and contribution of coastal women in SendangBiru to improve their family income. Descriptive and explanatory methods using questionnaire instrument and purposive sampling were used. The responden samples are coastal women who were productively doing activities to obtain extra income for their family. Coastal women of SendangBiru have important roles to improve their family income by spending a lot of time to do productive and reproductive activities. Coastal women’s income contributions bring about significant effects on fishery families’ financial security. Most of coastal women contributions meet half of their family needs.<br />Keywords: livelihood strategy, coastal women, income contribution, family income

scholarly journals Pola Relasi Gender dan Ketangguhan Masyarakat Suatu Kajian Gender dalam UMKM di Kecamatan Tanjung Mutiara, Kabupaten Agam

2020 ◽  
Vol 6 (2) ◽  
pp. 106-121
Author(s):  
Wahyu Pramono ◽  
Jendrius Jendrius ◽  
Zeni Eka Putri
Keyword(s):  
Gender Relations ◽  
Male Involvement ◽  
Living Environment ◽  
Community Level ◽  
Productive Activities ◽  
Or Groups ◽  
The Social ◽  
Reproductive Activities ◽  
And Control ◽  
Micro Enterprises

Abstract: This study analyzes the pattern of gender relations and community resilience in the development of micro enterprises in Tanjung Mutiara District, Agam Regency. The analysis was carried out at the household and community level by conducting interviews with women entrepreneurs, FGDs with women's micro-business groups and limited observation of the conditions of the living environment and the social context of the South Tiku community. The results showed that in general there was a clear division of labor between men and women. Men are involved in temporary productive activities of women in reproductive activities. As a result, women do a greater variety of jobs with a longer duration than men. Productive businesses carried out by women are considered to be only part of the reproductive ladder, so that male involvement and participation are also very low and make women's burdens more severe. Gender relations at the household and community level are relatively equal, this is because women have access and control over resources and also the values ​​and norms that develop in the community facilitate the creation of equality. However, changes in attitudes that are more gender sensitive to the actor's level have not been followed by changes at the community level. It is recommended that an effort to raise awareness for men both at the household and community level is more gender sensitive. Both efforts to provide assistance to micro-enterprises carried out by women need to be optimized especially for individuals or groups of women who really want to develop their businesses.

scholarly journals Mark-Recapture Studies on Co-Occurring Sympecma Fusca (Vander Linden, 1820) and S. Paedisca (Brauer, 1877) (Odonata: Zygoptera: Lestidae)

2014 ◽  
Vol 83 (3) ◽  
pp. 225-234
Author(s):  
Thomas Brockhaus
Keyword(s):  
Czech Republic ◽  
Close Correlation ◽  
Reproductive Behaviour ◽  
Population Estimate ◽  
Mark Recapture ◽  
Male Density ◽  
Reproductive Activities

Abstract Maturation cohorts and reproductive cohorts of the two Sympecma species were studied in Chomutov (Czech Republic) from 2010 to 2013. During individual mark-recapture studies, a total of 705 winter damselflies were recorded, 473 of which were individually marked (375 S. fusca, 98 S. paedisca). The recapture rates in the maturation habitat and in the reproductive habitat were low. The population estimate using CHAPMAN’s method for low recapture rates could not be carried out separately for the two species owing to the low recapture rate of S. paedisca. The proportion of females was greater in the maturation habitat and significantly lower than that of males in the reproductive habitat. The reproductive habitat was predominantly inhabited by territorial males. All the females observed there were engaged in reproductive activities. There was a close correlation between the male density along the shoreline and reproductive activities. S. paedisca was less abundant than S. fusca. No differences between the two species were observed in reproductive behaviour. However, S. paedisca appeared to disperse continuously away from the maturation habitat. Perhaps this species prefers more open areas as maturation and wintering habitats. S. fusca was observed here until October.

scholarly journals Risk-sensitive mating decisions in a visually compromised environment

2009 ◽  
Vol 5 (5) ◽  
pp. 600-602 ◽  
Author(s):  
Bob B. M. Wong ◽  
Marja Järvenpää ◽  
Kai Lindström
Keyword(s):  
Visual Cues ◽  
Perca Fluviatilis ◽  
Reproductive Decisions ◽  
Sand Goby ◽  
European Perch ◽  
Pomatoschistus Minutus ◽  
Risk Sensitive ◽  
Risk Of Predation ◽  
Males And Females ◽  
Reproductive Activities

Reproductive activities are often conspicuous and can increase the risk of predation. Evidence suggests that individuals are capable of responding to predators in a risk-sensitive manner. However, most studies tend to consider only the predator-mediated responses of males and females in isolation and with little regard to differences in local environmental conditions. Here, we experimentally investigate the effects of environmental visibility (turbidity) and predation risk on reproductive decisions in the sand goby, Pomatoschistus minutus , when exposed to a visually oriented predator, the European perch, Perca fluviatilis . We found that gobies were more reluctant to spawn in the predator's presence, although larger males spawned sooner than smaller males. Interestingly, latency to spawning was unaffected by the visual environment, suggesting that gobies may be relying on non-visual cues under turbid conditions.

The Hybrid Practitioner

2022 ◽  
Keyword(s):  
Landscape Design ◽  
Active Engagement ◽  
Art Theory ◽  
Architectural Practice ◽  
Sociology Of Professions ◽  
Professional Environment ◽  
Scholarly Production ◽  
Reproductive Activities ◽  
Academic Interests ◽  
Opening Up

The practice of architecture manifests in myriad forms and engagements. Overcoming false divides, this volume frames the fertile relationship between the cultural and scholarly production of academia and the process of designing and building in the material world. It proposes the concept of the hybrid practitioner, who bridges the gap between academia and practice by considering how different aspects of architectural practice, theory, and history intersect, opening up a fascinating array of possibilities for an active engagement with the present. The book explores different, interrelated roles for practicing architects and researchers, from the reproductive activities of teaching, consulting and publishing, through the reflective activities of drawing and writing, to the practice of building. The notion of the hybrid practitioner will appeal strongly to students, teachers and architectural practitioners as part of a multifaceted professional environment. By connecting academic interests with those of the professional realm, The Hybrid Practitioner addresses a wider readership embracing landscape design, art theory and aesthetics, European history, and the history and sociology of professions.

The Art of Psychodrama as a Public Space

FORUM ◽  
2009 ◽  
pp. 61-72
Author(s):  
Leif Dag Blomkvist
Keyword(s):  
Public Space ◽  
Group Psychotherapy ◽  
Sigmund Freud ◽  
Hannah Arendt ◽  
The Other ◽  
Private Space ◽  
Ancient Athens ◽  
Psychotherapeutic Practice ◽  
City State ◽  
Reproductive Activities

- This article, inspired by the writings of the philosopher Hannah Arendt, presents the concept of ‘Public Space' and traces its origins to the practice in the Polis (City State) of ancient Athens. The author points out that Public Space is a genuinely human domain, different from goal-oriented, reproductive activities shared with animals. He underlines the importance of distinguishing public from private space. Humans live in both, neither can exist without the other, but as a rule they must be kept separate and differentiated. The author attributes to public space the freedom of diversity and expression without loyalties, to see and to be seen and to act spontaneously in cooperation with others. He recruits Hanna Arendt, Sigmund Freud and J. L. Moreno in an appeal against a rising trend to conformity and ‘recognised' methods in psychotherapeutic practice and puts forward the idea of psychotherapy as an exchange, a public space, between two or more persons with a focus on the encounter between them. These qualities are most easily reached in group psychotherapy and in psychodrama, where spontaneity is the desired instrument.

儒家如何看待脱離婚姻的生育行為——由單身女性「凍卵」問題引發的法律與倫理討論

2019 ◽  
Vol 17 (1) ◽  
pp. 29-47
Author(s):  
Jie BAI
Keyword(s):  
Marriage Rate ◽  
Single Women ◽  
Confucian Ethics ◽  
Single Woman ◽  
Digital Commons ◽  
The Family ◽  
Conservative Policy ◽  
The Status ◽  
The Right ◽  
Reproductive Activities

LANGUAGE NOTE | Document text in Chinese; abstract also in English.近年來得益於女性地位的提升與名人效應，單身女性凍卵問題日趨成為社會輿論關注的焦點，由此也引發了法學界對單身女性生育權的討論。然而，單身女性凍卵不僅僅是一個法律議題，更是一個倫理問題。不僅法律和法規的制定和修訂中多有涉及對倫理的關照，凍卵的臨床實踐中也廣泛存在對倫理的考量。在結婚率和生育率持續走低當下社會，相當一部分單身 女性選擇凍卵的動機是希望脱離婚姻而進行自主的生育行 為。值得深思的是，東亞的儒教國家對輔助生殖的使用限制最為嚴格、政策最為保守。本文試圖通過分析儒家會如何看待脱離婚姻的生育行為，來探討儒學倫理對單身女性凍卵抱有怎麽樣的態度、能夠帶來怎麽的啟示。本文認為，儘管在法律維度上應該肯定單身女性擁有生育權，但在倫理層面上，脱離婚姻的生育行為應該極為審慎，因為其有違儒家倫理中對家庭秩序的看重，同時也讓“雙親撫育”難以得到實現。In recent years, thanks to the promotion of the status of women and the celebrity effect, the issue of the frozen eggs of single women has become a focus of public opinion, leading to discussion of the reproductive rights of single women in the legal arena. However, single women's frozen eggs are also an ethical issue. The laws and regulations not only involve ethics, but also ethical considerations in the clinical practice of frozen eggs. In today's society, in which the marriage rate and fertility rate continue to decline, many single women choose to freeze their eggs to distinguish between reproductive activities and marriage. It is worth thinking about the fact that Confucian East Asia has the strictest restrictions and most conservative policy on the use of assisted reproduction. This paper explores how Confucian ethics have a different position on single women’s frozen eggs by analyzing how Confucianism views fertility behaviors that are separated from marriage. It argues that although it is certain that a single woman has the right to give birth in the legal dimension, ethically, the procreative behavior of marriage should be taken with caution, as it violates the Confucian ethic of the family order by making parental care more difficult.DOWNLOAD HISTORY | This article has been downloaded 45 times in Digital Commons before migrating into this platform.

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