Syconium development in Ficus petiolaris (Ficus, sect. Americanae, Moraceae) and the relationship with pollinator and parasitic wasps

Botany ◽  
2019 ◽  
Vol 97 (3) ◽  
pp. 190-203 ◽  
Author(s):  
Eva María Piedra-Malagón ◽  
Balbina Hernández-Ramos ◽  
Ana Mirón-Monterrosas ◽  
Guadalupe Cornejo-Tenorio ◽  
Armando Navarrete-Segueda ◽  
...  
Keyword(s):  
Structural Changes ◽  
Parasitic Wasps ◽  
Fig Wasps ◽  
Positive Role ◽  
Male And Female ◽  
Time Required ◽  
Phase Recognition ◽  
First Time ◽  
The Relationship

For the first time in a Neotropical Ficus species (Ficus petiolaris Kunth), the external and internal structural changes in its syconia are described, together with the development of its fig wasps. Ficus petiolaris is endemic to Mexico and represents the northernmost limit of the geographical distribution of the genus in America. Considering the large variation in syconium morphology, we evaluated whether there are differences between syconium development in F. petiolaris and that described for Paleotropical species. We recorded the development of 428 syconia in two individuals from initiation to maturity, weekly, for a period of five months, as well as that of their associated insects. The time required for completion of syconium development ranged from 91 to 126 days. The external morphology of the syconia (color, ostiole size, and thickness of syconium wall) enabled phase recognition. Male and female pollinators (Pegoscapus sp.) and parasitic wasps (Idarnes sp.) were registered. High seed germination values (50%–90%) indirectly tested the positive role of pollinators. Our results are similar to those reported in Paleotropical Ficus species, and should contribute to our understanding of syconium development as well as to the relationships that they maintain with their Agaonidae wasps.

Effects of Myo-inositol Alone and in Combination with Seleno-Lmethionine on Cadmium-Induced Testicular Damage in Mice

2019 ◽  
Vol 12 (4) ◽  
pp. 311-323 ◽  
Author(s):  
Salvatore Benvenga ◽  
Antonio Micali ◽  
Giovanni Pallio ◽  
Roberto Vita ◽  
Consuelo Malta ◽  
...  
Keyword(s):  
Structural Changes ◽  
Natural Antioxidants ◽  
Minor Role ◽  
Positive Role ◽  
Testosterone Levels ◽  
Tnf Α ◽  
Testicular Lesions ◽  
A Minor ◽  
Immunohistochemical Analyses

Background: Cadmium (Cd) impairs gametogenesis and damages the blood-testis barrier. Objective: As the primary mechanism of Cd-induced damage is oxidative stress, the effects of two natural antioxidants, myo-inositol (MI) and seleno-L-methionine (Se), were evaluated in mice testes. Methods: Eighty-four male C57 BL/6J mice were divided into twelve groups: 0.9% NaCl (vehicle; 1 ml/kg/day i.p.); Se (0.2 mg/kg/day per os); Se (0.4 mg/kg/day per os); MI (360 mg/kg/day per os); MI plus Se (0.2 mg/kg/day); MI plus Se (0.4 mg/kg/day); CdCl2 (2 mg/kg/day i.p.) plus vehicle; CdCl2 plus MI; CdCl2 plus Se (0.2 mg/kg/day); CdCl2 plus Se (0.4 mg/kg/day); CdCl2 plus MI plus Se (0.2 mg/kg/day); and CdCl2 plus MI plus Se (0.4 mg/kg/day). After 14 days, testes were processed for biochemical, structural and immunohistochemical analyses. Results: CdCl2 increased iNOS and TNF-α expression and Malondialdehyde (MDA) levels, lowered glutathione (GSH) and testosterone, induced testicular lesions, and almost eliminated claudin-11 immunoreactivity. Se administration at 0.2 or 0.4 mg/kg significantly reduced iNOS and TNF-α expression, maintained GSH, MDA and testosterone levels, structural changes and low claudin-11 immunoreactivity. MI alone or associated with Se at 0.2 or 0.4 mg/kg significantly reduced iNOS and TNF-α expression and MDA levels, increased GSH and testosterone levels, ameliorated structural organization and increased claudin-11 patches number. Conclusion: We demonstrated a protective effect of MI, a minor role of Se and an evident positive role of the association between MI and Se on Cd-induced damages of the testis. MI alone or associated with Se might protect testes in subjects exposed to toxicants, at least to those with behavior similar to Cd.

Influence of Confucian culture on entrepreneurial decision making using data from China's floating population

2020 ◽  
Vol 48 (7) ◽  
pp. 1-12
Author(s):  
Ran Xiong ◽  
Ping Wei
Keyword(s):  
Decision Making ◽  
Floating Population ◽  
Positive Role ◽  
Confucian Culture ◽  
Chinese Nation ◽  
Using Data ◽  
Entrepreneurial Decision ◽  
And Behavior ◽  
The Relationship

Confucian culture has had a deep-rooted influence on Chinese thinking and behavior for more than 2,000 years. With a manually created Confucian culture database and the 2017 China floating population survey, we used empirical analysis to test the relationship between Confucian culture and individual entrepreneurial choice using data obtained from China's floating population. After using the presence and number of Confucian schools and temples, and of chaste women as instrumental variables to counteract problems of endogeneity, we found that Confucian culture had a significant role in promoting individuals' entrepreneurial decision making among China's floating population. The results showed that, compared with those from areas of China not strongly influenced by Confucian culture, individuals from areas that are strongly influenced by Confucian culture were more likely to choose entrepreneurship as their occupation choice. Our findings reveal cultural factors that affect individual entrepreneurial behavior, and also illustrate the positive role of Confucianism as a representative of the typical cultures of the Chinese nation in the 21st century.

scholarly journals The positive role of hope on the relationship between loneliness and unhappy conditions in Hungarian young adults: How pathways thinking matters!

2018 ◽  
Vol 14 (6) ◽  
pp. 724-733 ◽  
Author(s):  
Edward C. Chang ◽  
Olivia D. Chang ◽  
Tamás Martos ◽  
Viola Sallay ◽  
Ingo Zettler ◽  
...  
Keyword(s):  
Young Adults ◽  
Positive Role ◽  
The Relationship

A phylogenetic revision of Calydna and relatives (Lepidoptera: Riodinidae)

2002 ◽  
Vol 33 (2) ◽  
pp. 185-237 ◽  
Author(s):  
Jason P.W. Hall
Keyword(s):  
Phylogenetic Analysis ◽  
New Genus ◽  
Male And Female ◽  
Basal Clade ◽  
Two New Species ◽  
Group A ◽  
Species Groups ◽  
First Time ◽  
The Relationship ◽  
Phylogenetic Revision

AbstractA phylogenetic revision of the Neotropical riodinid genus Calydna Doubleday and relatives is presented. A phylogenetic analysis for all twenty species of Calydna using thirty-eight characters of adult morphology generated four most parsimonious cladograms. Calydna is characterised to contain eighteen species, divided here into three monophyletic species groups with the relationship caieta group + (thersander group + hiria group). A new genus Echydna Hall gen. n. is described for the most basal clade, containing chaseba Hewitson and punctata C. & R. Felder, which are transferred from Calydna (combs. n.). The taxonomy, morphology, biogeography and biology of both genera are discussed, locality data is listed and mapped, and the adults and male and female genitalia are illustrated for all species. Concealed male abdominal androconial scales, which phylogenetically unite the thersander and hiria groups, are reported for the first time outside of the tribes Symmachiini and Nymphidiini. Two new species are described, Calydna jeannea sp. n. and Calydna nicolayi sp. n., and the replacement name fissilisima is provided for the unavailable name fissilis Stichel; maculosa Bates is transferred from Calydna to Callistium Stichel (comb. n.).

scholarly journals MIGRATION, WAR, AND THE MAKING OF A TRANSNATIONAL LEBANESE SHIʿI COMMUNITY IN SENEGAL

2010 ◽  
Vol 42 (2) ◽  
pp. 269-290 ◽  
Author(s):  
Mara A. Leichtman
Keyword(s):  
National Identity ◽  
Public Opinion ◽  
Turning Point ◽  
West African ◽  
Local Responses ◽  
Religious Rituals ◽  
Political Ties ◽  
First Time ◽  
The Relationship

The July 2006 Lebanon war was an important turning point for West African Lebanese. For the first time since their formation as a community, the Lebanese in Senegal organized a demonstration in Dakar displaying solidarity with Lebanon. This protest illuminates the dynamics between global forces and local responses. Hizbullah's effectiveness in winning the international public opinion of both Sunni and Shiʿi Muslims in the war against Israel led to a surge in Lebanese diaspora identification, even among communities who had not been similarly affected by previous Lebanese wars. By analyzing the role of a Lebanese shaykh in bringing religious rituals and a Lebanese national identity to the community in Senegal, this article explores how members of the community maintain political ties to Lebanon even when they have never visited the “homeland” and sheds new light on the relationship among religion, migration, and (trans)nationalism.

ENVIRONMENTAL REGULATION IMPROVES THE FIRM PERFORMANCE IN THE PAPER INDUSTRY IN CHINA

2021 ◽  
pp. 1-32
Author(s):  
YONGLIANG YANG ◽  
LILI DING ◽  
YI LI
Keyword(s):  
Firm Performance ◽  
Positive Impact ◽  
Paper Industry ◽  
Average Treatment Effect ◽  
Small Scale ◽  
Positive Role ◽  
Firm Level ◽  
Innovation Ability ◽  
The Relationship

This research develops a difference-in-differences (DID) model to explore the relationship between environmental policy (The Measures for the Administration of Permits for the Discharge of Key Water Pollutants in the Huaihe and Taihu River Basins, MAPD) and the performance of firms involved in the paper and paper products industry (MPP) in China. Cost and innovation are introduced as mediators to explore the mediating effects. A firm-level dataset from 1998 to 2007 is adopted for empirical study. The findings support the positive role of the MAPD, and the average treatment effect is 0.016.The heterogeneity analysis shows that the MAPD exerts a positive impact on non-state-owned and small-scale enterprises, with coefficients of 0.018 and 0.021, respectively. Moreover, MAPD increases enterprise costs harming firm performance. On the other hand, it can promote firm performance by improving innovation ability.

The Role of Family Ownership in Survival and Bouncing Back

2020 ◽  
pp. 261-282
Author(s):  
María Iborra ◽  
Vicente Safón ◽  
Consuelo Dolz
Keyword(s):  
Family Firms ◽  
Good News ◽  
Family Ownership ◽  
Stressful Event ◽  
Positive Role ◽  
Bankruptcy Risk ◽  
Negative Effect ◽  
Litmus Test ◽  
The Relationship

The latest global economic and financial crisis has been a litmus test for companies, especially for SMEs. These companies have had to demonstrate their ability to be resilient, surviving first and then recovering. This chapter studies the role of family ownership in the survival and recovery of SMEs during a stressful event. From a perspective based on the complementarity or substitutability of goals that family firms pursue, the authors propose that family ownership has a positive effect on survival but a negative effect on recovery. Furthermore, they propose that the risk of bankruptcy before a crisis moderates the relationship between family ownership and survival. Hypotheses have been tested with a dataset of 3,133 Spanish manufacturing MEs finding evidence for the positive role of family ownership in survival and for the moderating effect of previous bankruptcy risk. The empirical data confirms good news for family-owned firms.

scholarly journals Gender differences in audio-vestibular disorders

2020 ◽  
Vol 34 ◽  
pp. 205873842092917
Author(s):  
Virginia Corazzi ◽  
Andrea Ciorba ◽  
Piotr Henryk Skarżyński ◽  
Magdalena B Skarżyńska ◽  
Chiara Bianchini ◽  
...  
Keyword(s):  
Gender Differences ◽  
Clinical Outcome ◽  
Potential Role ◽  
Vestibular Disorders ◽  
Men And Women ◽  
Male And Female ◽  
Vestibular Tests ◽  
Medical Disciplines ◽  
The Relationship

In the last years, the attention to the role of gender in physiopathology and pharmacology of diseases in several medical disciplines is rising; however, the data on the relationship between gender and audio-vestibular disorders are still inconclusive and sometimes confusing. With this letter to the editor, we would like to review the role of gender in audio-vestibular disorders. Literature data show that anatomic variances of the inner ear do exist in men and women and that the different physiology and/or hormonal influence between genders could produce different clinical outcome of routine audiological and vestibular tests. Beyond the epidemiological gender-related differences, the clinical data suggest that the gender has a potential role as an etiopathogenetic factor in audio-vestibular disorders and it is probably responsible for the different clinical features observed between male and female subjects.

The mediating role of maladaptive perfectionism in the association between psychological control and learned helplessness

2017 ◽  
Vol 20 (2) ◽  
pp. 113-126 ◽  
Author(s):  
Pina Filippello ◽  
Rosalba Larcan ◽  
Luana Sorrenti ◽  
Caterina Buzzai ◽  
Susanna Orecchio ◽  
...  
Keyword(s):  
Standard Deviation ◽  
Learned Helplessness ◽  
Psychological Control ◽  
Parental Psychological Control ◽  
Mediating Role ◽  
Maladaptive Perfectionism ◽  
Relevant Role ◽  
First Time ◽  
The Relationship

Despite the extensive research on parental psychological control, no study has explored the relation between parental and teacher psychological control, maladaptive perfectionism and learned helplessness (LH). The purpose of this study was to investigate (1) whether perceived teacher psychological control predicts positively LH, (2) whether perceived parental psychological control predicts maladaptive perfectionism, and (3) whether the association between perceived parental and teacher psychological control and LH is mediated by maladaptive perfectionism. In a sample of 433 participants, 268 females (61.9%) and 165 males (38.1%), ranged in age from 13 to 19 years ( M = 15.38, standard deviation (SD) = 1.18), it was found that teacher psychological control has a more relevant role in the prediction of LH than parental control. Moreover, maladaptive perfectionism was a full mediator of the relationship between perceptions of teacher psychological control and LH. These results extend previous studies on teacher psychological control and, for the first time, provide evidence for the relation with LH, identifying maladaptive perfectionism as a variable that accounts for the relation between teacher psychological control and LH.

scholarly journals The Mediating Role of Knowledge Management and the Moderating Part of Organizational Culture between HRM Practices and Organizational Performance

2015 ◽  
Vol 9 (1) ◽  
pp. 43 ◽  
Author(s):  
Ahmad A. Al-Tit
Keyword(s):  
Organizational Culture ◽  
Knowledge Management ◽  
Organizational Performance ◽  
Knowledge Creation ◽  
Positive Role ◽  
Mediating Role ◽  
Hrm Practices ◽  
The Impact ◽  
The Relationship

<p>The aim of this study was to investigate the relationship between human resource management (HRM) practices and organizational performance on the basis of 247 valid and reliable questionnaires distributed to managers at different management levels working in Jordanian manufacturing firms. The study also aimed to explore the mediating role of knowledge management as well as the moderating effect of organizational culture on the relationship between HRM practices and organizational performance. Ten HRM practices and 10 indicators of organizational performance were adopted for the purpose of this study. Knowledge management was measured by examining three processes; knowledge creation, sharing and utilization. Organizational culture was measured according to passive/defensive, aggressive/defensive and constructive cultures. The results of the study supported the presumed hypotheses. Hence, HRM practices significantly predicted organizational performance. Knowledge management mediated the relationship between HRM practices and organizational performance. Finally, it was found that organizational culture moderated the relationship between HRM practices and organizational performance as well as the relationship between HRM practices and knowledge management. Constructive cultures play a positive role in the relationship between HRM practices and organizational performance (OP), while defensive cultures negatively affect the relationship between HRM practices and knowledge management (KM). The main contribution of this study to the literature on HRM, KM and OP derives from the lack of prior studies addressing the same purposes as this study. The study informs researchers and managers that both knowledge management and organizational culture mediate and moderate the impact of HRM practices on organizational performance to a considerable extent.</p>

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