scholarly journals Validation of the three-chamber strategy for studying mate choice in medaka

PLoS ONE ◽  
2021 ◽  
Vol 16 (11) ◽  
pp. e0259741
Author(s):  
Ena Kaneko ◽  
Hinako Sato ◽  
Shoji Fukamachi
Keyword(s):  
Mate Choice ◽  
Sexual Preference ◽  
Freshwater Teleost ◽  
Test Animal ◽  
Physiological Mechanisms ◽  
Free Swimming ◽  
Face To Face ◽  
Manual Counting ◽  
Counting Strategy ◽  
Test Fish

The three-chamber experiment, in which one test animal can choose between two animals placed in physically inaccessible compartments, is a widely adopted strategy for studying sexual preference in animals. Medaka, a small freshwater teleost, is an emerging model for dissecting the neurological/physiological mechanisms underlying mate choice for which intriguing findings have been accumulating. The three-chamber strategy has rarely been adopted in this species; therefore, here we investigated its validity using medaka colour variants that mate assortatively. First, a total of 551 movies, in which a test male and two choice females interacted for 30 min under a free-swimming condition, were manually analysed. The sexual preference of the males, calculated as a courtship ratio, was highly consistent between human observers (r > 0.96), supporting the objectivity of this manual-counting strategy. Second, we tested two types of three-chamber apparatuses, in which choice fish were presented in either a face-to-face or side-by-side location. Test fish (regardless of sex) spent most of the time associating with choice fish in the compartments. However, their sexual preference, calculated as an association ratio, was poorly reproduced when the locations of the choice fish were swapped. Third, the sexual preferences of males quantified using the manual-counting and either of the three-chamber strategies did not correlate (r = 0.147 or 0.297). Hence, we concluded that, even for individuals of a species like medaka, which spawn every day, sexual preference could not be reliably evaluated using the three-chamber strategy. Optimization of the protocol may solve this problem; however, the explanation for the observation that animals that are ready for spawning persist with never-accessible mating partners must be reconsidered.

scholarly journals Physiological synchrony is associated with cooperative success in real-life interactions

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
F. Behrens ◽  
J. A. Snijdewint ◽  
R. G. Moulder ◽  
E. Prochazkova ◽  
E. E. Sjak-Shie ◽  
...  
Keyword(s):  
Skin Conductance ◽  
Skin Conductance Level ◽  
Real Life ◽  
Strong Relationship ◽  
Dyadic Interaction ◽  
Physiological Mechanisms ◽  
Face To Face ◽  
Physiological Synchrony ◽  
Skin Conductance Levels ◽  
The Face

AbstractCooperation is pivotal for society to flourish. To foster cooperation, humans express and read intentions via explicit signals and subtle reflections of arousal visible in the face. Evidence is accumulating that humans synchronize these nonverbal expressions and the physiological mechanisms underlying them, potentially influencing cooperation. The current study is designed to verify this putative linkage between synchrony and cooperation. To that end, 152 participants played the Prisoner’s Dilemma game in a dyadic interaction setting, sometimes facing each other and sometimes not. Results showed that synchrony in both heart rate and skin conductance level emerged during face-to-face contact. However, only synchrony in skin conductance levels predicted cooperative success of dyads. Crucially, this positive linkage was strengthened when participants could see each other. These findings show the strong relationship between our bodily responses and social behavior, and emphasize the importance of studying social processes between rather than within individuals in real-life interactions.

Effects of Early Experience and Male Activity On Mate Choice in Mallard Females (Anas Platyrhynchos)

Behaviour ◽  
1982 ◽  
Vol 80 (1-2) ◽  
pp. 32-43 ◽  
Author(s):  
I. Bossema ◽  
G.J. Lammers ◽  
J.P. Kruijt
Keyword(s):  
Mate Choice ◽  
Early Life ◽  
Wild Strain ◽  
Early Experience ◽  
Pair Formation ◽  
Sexual Preference ◽  
The Other ◽  
Overt Aggression ◽  
Individual Female ◽  
Male Activity

AbstractThe sexual preference of mallard females exposed in early life to individuals of either a white or a wild strain was examined in tests in which an individual female was separated by wire from two males, one on either side of the cage. One male was of the same strain as that with which the female was reared (RS male), the second of the other type (NRS male). Inciting to a male by a female was used as the main measure of her preference; inciting to one male was positively correlated with overt aggression directed to the other male. Most females showed a preference for RS males; though this was more often the case with females reared socially with conspecifics than with those which had visual and acoustical contacts only in their early life. Females also tended to prefer the male most interested in her, as expressed by the male's approach, following and staying near. No evidence was obtained that females preferred males belonging to her own strain. Contrary to earlier views it is concluded that early experience influenced the sexual preference of females and that they respond to activity differences of males. Females showed no indications of being able to recognize and respond to the normal nuptial plumage of males independently of such experience. Implications of our findings for pair-formation in nature and the significance of social displays of males for pair-formation are discussed.

scholarly journals THE COMPLIMENT AS A SOCIAL STRATEGY: A DISCOURSE ANALYSIS OF ON-LINE COMPLIMENTS AND INSULTS

2020 ◽  
Author(s):  
Joe Gregory Ocaña Loor
Keyword(s):  
Social Networks ◽  
Social Media ◽  
Sexual Preference ◽  
Redes Sociales ◽  
Donald Trump ◽  
Daily Lives ◽  
Face To Face ◽  
Social Strategy ◽  
Palabras Clave ◽  
On Line

Abstract: Compliments and insults play an important role in our daily lives, and even more when a high part of it is in social networks. Some authors have focused on research on responses to compliments (Holmes, 1986) responses to compliments on-line (Maíz-Arévalo, 2013), compliments in Japanese (Adachi, 2011), or compliments in audio-recorded, face-to-face conversations (Maíz-Arévalo, 2012). Nevertheless, little research has been done on how English compliments and insults are constructed in the comments section of famous people posts in social media. This is the aim of this text, as well as answering the following questions: what kind of compliments do fans use? What kind of insults do users employ? Do they change depending on the sexual preference of the celebrity that social networks users address? Results display that compliments and insults can be used explicitly and implicitly, although the explicit way is the most frequent type, both among compliments and insults. Also, regarding the sexual preference of celebrities, we can find that a there is a low influence over social media users when complimenting and insulting famous individuals in social networks.Keywords: compliments, insults, social networks, English, celebrities, Facebook, post. Resumen: Los halagos e insultos desempeñan un papel importante en nuestra vida cotidiana, incluso más cuando gran parte de ella está publicada en las redes sociales. Algunos autores se han centrado en investigar las respuestas a halagos, respuestas a halagos en línea, halagos en japonés o halagos en conversaciones cara a cara grabadas en audio. Sin embargo, poco se ha investigado acerca de cómo se construyen los halagos en insultos en inglés a lo largo de la sección de comentarios de las publicaciones de famosos en redes sociales. Este es el objetivo de este texto, así como responder a las siguientes preguntas: ¿Qué tipo de halagos usan los fans? ¿Qué tipo de insultos se usan? ¿Cambian dependiendo de la orientación sexual de los famosos? Los resultados demuestran que los halagos e insultos pueden ser usados explícitamente e implícitamente, aunque la forma más común es la explícita, tanto en halagos como en insultos. Además, en cuanto a la orientación sexual de los famosos, vemos que los usuarios de redes sociales se ven poco influenciados a la hora de halagar o insultar a famosos –Donald Trump y Neil Patrick Harris– en redes sociales. Palabras clave: halagos, insultos, redes sociales, inglés, celebrities, Facebook, publicación.

An ultrastructural study of sertoli cells in two geographically isolated populations of Aphanius dispar

1992 ◽  
Vol 50 (1) ◽  
pp. 548-549
Author(s):  
Taber A. Ba-Omar ◽  
Philip F. Prentis
Keyword(s):  
Ultrastructural Level ◽  
Uranyl Acetate ◽  
Freshwater Teleost ◽  
Isolated Populations ◽  
En Bloc ◽  
The North ◽  
Group A ◽  
Ultrathin Sections ◽  
Group B ◽  
Geographically Isolated

We have recently carried out a study of spermiogenic differentiation in two geographically isolated populations of Aphanius dispar (freshwater teleost), with a view to ascertaining variation at the ultrastructural level. The sampling areas were the Jebel Al Akhdar in the north (Group A) and the Dhofar region (Group B) in the south. Specimens from each group were collected, the testes removed, fixed in Karnovsky solution, post fixed in OsO, en bloc stained with uranyl acetate and then routinely processed to Agar 100 resin, semi and ultrathin sections were prepared for study.

The time course of calcium deposition in shells of the barnacle (Balanus amphititre amphititre) during cyprid-juvenile metamorphosis

1994 ◽  
Vol 52 ◽  
pp. 178-179
Author(s):  
Nancy R. Wallace ◽  
Craig C. Freudenrich ◽  
Karl Wilbur ◽  
Peter Ingram ◽  
Ann LeFurgey
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Time Course ◽  
Vertical Plane ◽  
Mantle Cavity ◽  
Qualitative Assessment ◽  
Calcium Deposition ◽  
Free Swimming ◽  
Freeze Dried ◽  
Scanning Electron

The morphology of balanomorph barnacles during metamorphosis from the cyprid larval stage to the juvenile has been examined by light microscopy and scanning electron microscopy (SEM). The free-swimming cyprid attaches to a substrate, rotates 90° in the vertical plane, molts, and assumes the adult shape. The resulting metamorph is clad in soft cuticle and has an adult-like appearance with a mantle cavity, thorax with cirri, and incipient shell plates. At some time during the development from cyprid to juvenile, the barnacle begins to mineralize its shell, but it is not known whether calcification occurs before, during, or after ecdysis. To examine this issue, electron probe x-ray microanalysis (EPXMA) was used to detect calcium in cyprids and juveniles at various times during metamorphosis.Laboratory-raised, free-swimming cyprid larvae were allowed to settle on plastic coverslips in culture dishes of seawater. The cyprids were observed with a dissecting microscope, cryopreserved in liquid nitrogen-cooled liquid propane at various times (0-24 h) during metamorphosis, freeze dried, rotary carbon-coated, and examined with scanning electron microscopy (SEM). EPXMA dot maps were obtained in parallel for qualitative assessment of calcium and other elements in the carapace, wall, and opercular plates.

Face-to-Face

1992 ◽  
Vol 1 (2) ◽  
pp. 11-12 ◽  
Author(s):  
James Jerger
Keyword(s):  
Face To Face

Supporting the Use of Rudimentary Vocalizations

2014 ◽  
Vol 23 (3) ◽  
pp. 132-139 ◽  
Author(s):  
Lauren Zubow ◽  
Richard Hurtig
Keyword(s):  
Rett Syndrome ◽  
Visual Cues ◽  
Acoustic Analysis ◽  
Eye Gaze ◽  
Research Question ◽  
Primary Research ◽  
Multiple Modalities ◽  
Face To Face ◽  
Perceptual Judgments ◽  
The Face

Children with Rett Syndrome (RS) are reported to use multiple modalities to communicate although their intentionality is often questioned (Bartolotta, Zipp, Simpkins, & Glazewski, 2011; Hetzroni & Rubin, 2006; Sigafoos et al., 2000; Sigafoos, Woodyatt, Tuckeer, Roberts-Pennell, & Pittendreigh, 2000). This paper will present results of a study analyzing the unconventional vocalizations of a child with RS. The primary research question addresses the ability of familiar and unfamiliar listeners to interpret unconventional vocalizations as “yes” or “no” responses. This paper will also address the acoustic analysis and perceptual judgments of these vocalizations. Pre-recorded isolated vocalizations of “yes” and “no” were presented to 5 listeners (mother, father, 1 unfamiliar, and 2 familiar clinicians) and the listeners were asked to rate the vocalizations as either “yes” or “no.” The ratings were compared to the original identification made by the child's mother during the face-to-face interaction from which the samples were drawn. Findings of this study suggest, in this case, the child's vocalizations were intentional and could be interpreted by familiar and unfamiliar listeners as either “yes” or “no” without contextual or visual cues. The results suggest that communication partners should be trained to attend to eye-gaze and vocalizations to ensure the child's intended choice is accurately understood.

Chronische Alpträume: Wirksamkeit eines deutschsprachigen Manuals zur angeleiteten Selbsthilfe mit Imagery Rehearsal Therapy

2012 ◽  
Vol 41 (4) ◽  
pp. 249-257 ◽  
Author(s):  
Tana Kröner ◽  
Kathrin Hansen ◽  
Regina Steil
Keyword(s):  
Face To Face ◽  
Imagery Rehearsal Therapy ◽  
Imagery Rehearsal

Theoretischer Hintergrund: Chronische Alpträume stellen eine weit verbreitete Schlafstörung dar, welche einen hohen Leidensdruck hervorruft. Als besonders wirksam in der Behandlung gilt die Imagery Rehearsal Therapy (IRT). Selbsthilfeprogramme stellen hierbei eine effektive, ökonomische Behandlungsoption dar. Fragestellung: Die vorliegende Pilotstudie untersucht die Wirksamkeit einer neuen, IRT-basierten, angeleiteten Selbsthilfe. Methode: 10 Patienten mit chronischen Alpträumen wurden im Rahmen von 4 face-to-face-Sitzungen vor Intervention (T1) sowie 4 Wochen (T2) und 3 Monate (T3) danach hinsichtlich Alptraumhäufigkeit sowie verschiedener psychosozialer Parameter untersucht. Ergebnisse: Die Alptraumhäufigkeit reduzierte sich innerhalb von 4 Wochen signifikant (T1-T2; Effektstärke: 1,0). Dieser Effekt blieb über 3 Monate stabil (T1-T3; Effektstärke: 1,26). Zudem reduzierten sich signifikant Depressions-, Angst- und Anspannungsparameter sowie das Stresserleben. Schlussfolgerung: Das deutschsprachige Selbsthilfemanual könnte eine wirksame Behandlungsmöglichkeit zur Reduktion von Alpträumen darstellen.

Psychopathology 8½ Years Post Parasuicide

Crisis ◽  
1999 ◽  
Vol 20 (3) ◽  
pp. 115-120 ◽  
Author(s):  
Stephen Curran ◽  
Michael Fitzgerald ◽  
Vincent T Greene
Keyword(s):  
Rating Scales ◽  
Psychiatric Morbidity ◽  
Parental Bonding ◽  
Social Maladjustment ◽  
Term Outcome ◽  
Long Term Outcome ◽  
Face To Face ◽  
Long Term Follow Up

There are few long-term follow-up studies of parasuicides incorporating face-to-face interviews. To date no study has evaluated the prevalence of psychiatric morbidity at long-term follow-up of parasuicides using diagnostic rating scales, nor has any study examined parental bonding issues in this population. We attempted a prospective follow-up of 85 parasuicide cases an average of 8½ years later. Psychiatric morbidity, social functioning, and recollections of the parenting style of their parents were assessed using the Clinical Interview Schedule, the Social Maladjustment Scale, and the Parental Bonding Instrument, respectively. Thirty-nine persons in total were interviewed, 19 of whom were well and 20 of whom had psychiatric morbidity. Five had died during the follow-up period, 3 by suicide. Migration, refusals, and untraceability were common. Parasuicide was associated with parental overprotection during childhood. Long-term outcome is poor, especially among those who engaged in repeated parasuicides.

Response Rates in Online Surveys With Affective Disorder Participants

2020 ◽  
Vol 228 (1) ◽  
pp. 14-24 ◽  
Author(s):  
Tanja Burgard ◽  
Michael Bošnjak ◽  
Nadine Wedderhoff
Keyword(s):  
Meta Analysis ◽  
Response Rates ◽  
Contact Mode ◽  
General Anxiety Disorder ◽  
General Anxiety ◽  
Face To Face ◽  
Survey Participation ◽  
The Mean ◽  
Design Characteristics ◽  
E Mail

Abstract. A meta-analysis was performed to determine whether response rates to online psychology surveys have decreased over time and the effect of specific design characteristics (contact mode, burden of participation, and incentives) on response rates. The meta-analysis is restricted to samples of adults with depression or general anxiety disorder. Time and study design effects are tested using mixed-effects meta-regressions as implemented in the metafor package in R. The mean response rate of the 20 studies fulfilling our meta-analytic inclusion criteria is approximately 43%. Response rates are lower in more recently conducted surveys and in surveys employing longer questionnaires. Furthermore, we found that personal invitations, for example, via telephone or face-to-face contacts, yielded higher response rates compared to e-mail invitations. As predicted by sensitivity reinforcement theory, no effect of incentives on survey participation in this specific group (scoring high on neuroticism) could be observed.

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