Negative effects of Corbicula fluminea over native freshwater mussels

The present study provides a species list of freshwater mussels from Catalão, the meeting of the Solimões and Negro rivers, in state of Amazonas, northern Brazil. Expeditions to collect molluscs were carried out between 2004 and 2006, during high and low water seasons. Three hundred and thirty-one bivalve shells, 25 valves, and 57 live specimens of four families and 10 species were identified. A single exotic species, Corbicula fluminea, represented over half the collected shells. All bivalve shells were photographed and registered at the mollusc collection of the Instituto Nacional de Pesquisas da Amazônia (INPA), Manaus.

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The valve movement response of three freshwater mussels Corbicula fluminea Müller 1774, Hyriopsis cumingii Lea 1852, and Anodonta woodiana Lea 1834 exposed to copper

Hydrobiologia ◽

10.1007/s10750-015-2560-2 ◽

2015 ◽

Vol 770 (1) ◽

pp. 1-13 ◽

Cited By ~ 9

Author(s):

Hongbo Liu ◽

Xiubao Chen ◽

Ik Joon Kang ◽

Yohei Shimasaki ◽

Yuji Oshima ◽

...

Keyword(s):

Freshwater Mussels ◽

Corbicula Fluminea ◽

Movement Response ◽

Hyriopsis Cumingii ◽

Valve Movement ◽

Anodonta Woodiana

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Undesirable Effects of Goal Setting on Perceived Fairness, Commitment, and Unethical Behavior

Zeitschrift für Arbeits- und Organisationspsychologie A&O ◽

10.1026/0932-4089/a000267 ◽

2018 ◽

Vol 62 (2) ◽

pp. 97-107 ◽

Cited By ~ 2

Author(s):

Nina Keith

Keyword(s):

Goal Setting ◽

Unethical Behavior ◽

The United States ◽

Goal Commitment ◽

Management Technique ◽

Long Term Effects ◽

Perceived Fairness ◽

Negative Effects ◽

Positive Effects ◽

And Performance

Abstract. The positive effects of goal setting on motivation and performance are among the most established findings of industrial–organizational psychology. Accordingly, goal setting is a common management technique. Lately, however, potential negative effects of goal-setting, for example, on unethical behavior, are increasingly being discussed. This research replicates and extends a laboratory experiment conducted in the United States. In one of three goal conditions (do-your-best goals, consistently high goals, increasingly high goals), 101 participants worked on a search task in five rounds. Half of them (transparency yes/no) were informed at the outset about goal development. We did not find the expected effects on unethical behavior but medium-to-large effects on subjective variables: Perceived fairness of goals and goal commitment were least favorable in the increasing-goal condition, particularly in later goal rounds. Results indicate that when designing goal-setting interventions, organizations may consider potential undesirable long-term effects.

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The Effect of Suicide-Related Internet Use on Users’ Mental Health

Crisis ◽

10.1027/0227-5910/a000201 ◽

2013 ◽

Vol 34 (5) ◽

pp. 348-353 ◽

Cited By ~ 25

Author(s):

Hajime Sueki

Keyword(s):

Mental Health ◽

Young Adults ◽

Suicidal Ideation ◽

Internet Use ◽

Panel Study ◽

Psychological Effects ◽

The Internet ◽

Negative Effects ◽

Suicide Methods ◽

Internet Users

Background: Previous studies have shown that suicide-related Internet use can have both negative and positive psychological effects. Aims: This study examined the effect of suicide-related Internet use on users’ suicidal ideation, depression/anxiety tendency, and loneliness. Method: A two-wave panel study of 850 Internet users was conducted via the Internet. Results: Suicide-related Internet use (e.g., browsing websites about suicide methods) had negative effects on suicidal ideation and depression/anxiety tendency. No forms of suicide-related Internet use, even those that would generally be considered positive, were found to decrease users’ suicidal ideation. In addition, our results suggest that the greater the suicidal ideation and feelings of depression and loneliness of Internet users, the more they used the Internet. Conclusion: Since suicide-related Internet use can adversely influence the mental health of young adults, it is necessary to take measures to reduce their exposure to such information.

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Searching Online for Methods of Suicide

Crisis ◽

10.1027/0227-5910/a000701 ◽

2020 ◽

pp. 1-8

Author(s):

Christian Ulrich Eriksen ◽

Flemming Konradsen ◽

Thilde Vildekilde

Keyword(s):

Content Analysis ◽

English Language ◽

Significant Proportion ◽

Background Information ◽

Access To Information ◽

Online Content ◽

Negative Effects ◽

Search Terms ◽

Methods Of Suicide

Abstract. Background: Information on methods of suicide is available online, and access to information on methods of suicide appears to contribute to a small but significant proportion of suicides. There is limited documentation of how methods of suicide are being profiled, as well as what content exists in other languages than English. Aim: We aimed to analyze and compare how methods of suicide are profiled on Danish and English-language websites. Method: We applied a categorization and content analysis of websites describing methods of suicide. Sites were retrieved by applying widely used Danish and English-language search terms. Results: A total of 136 English-language websites and 106 Danish-language websites were included for analysis. Websites were more often categorized as prevention or support sites, academic or policy sites, and against suicide sites than dedicated suicide sites (i.e., pro-suicide sites), or information sites. However, information on methods of suicide was available, and 20.1% and 8.9% of the English and Danish-language sites, respectively, suggested that a particular method of suicide was quick, easy, painless, or certain to result in death. Limitations: Only one author coded and analyzed all websites. A further operationalization of the content analysis checklist is warranted to increase reliability. Conclusion: The websites primarily had a prevention or anti-suicide focus, but information on methods of suicide was available, requiring an increased focus on how to diminish the negative effects of harmful online content.

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Effectiveness of Programs for the Prevention of Child Sexual Abuse

European Psychologist ◽

10.1027/1016-9040/a000379 ◽

2020 ◽

Vol 25 (1) ◽

pp. 1-15 ◽

Cited By ~ 3

Author(s):

Amaia Del Campo ◽

Marisalva Fávero

Keyword(s):

United States ◽

Sexual Abuse ◽

New Zealand ◽

Critical Analysis ◽

Prevention Programs ◽

The United States ◽

Sexual Abuse Prevention ◽

Negative Effects ◽

The United Kingdom ◽

Methodological Considerations

Abstract. During the last decades, several studies have been conducted on the effectiveness of sexual abuse prevention programs implemented in different countries. In this article, we present a review of 70 studies (1981–2017) evaluating prevention programs, conducted mostly in the United States and Canada, although with a considerable presence also in other countries, such as New Zealand and the United Kingdom. The results of these studies, in general, are very promising and encourage us to continue this type of intervention, almost unanimously confirming its effectiveness. Prevention programs encourage children and adolescents to report the abuse experienced and they may help to reduce the trauma of sexual abuse if there are victims among the participants. We also found that some evaluations have not considered the possible negative effects of this type of programs in the event that they are applied inappropriately. Finally, we present some methodological considerations as critical analysis to this type of evaluations.

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