G.J.C. Kirsten

University of Alaska Anchorage

Author Statistics

Papers

Citation

H-Index

i-10 index

Research Trends

Author Order

Document Type

Co-Authors

Martta Liukkonen

University of Jyväskylä

Helen Meyer

North-West University

Suvi Ruuskanen

University of Jyväskylä

Jaqueline De Vos

North-West University

Lars Gustafsson

Uppsala University

Cooperative Institutions

University of Jyväskylä

North-West University

Netherlands Institute of Ecology

University of Turku

University of Colombo

Uppsala University

Consultant To Government and Industry (United Kingdom)

Helsingborgs lasarett

Lund University

Aarhus University

Author Statistics

Papers

Citation

H-Index

i-10 index

Research Field

Gut microbiome diversity associates with estimated lifetime and annual reproductive success in male but not female collared flycatchers

bioRxiv (Cold Spring Harbor Laboratory) (2024)

Martta Liukkonen Lars Gustafsson G.J.C. Kirsten Suvi Ruuskanen

ABSTRACT The gut microbiome (hereafter, GM) varies across individuals of the same species and this pattern has been observed in multiple wild species. Evidence shows that the GM connects to individual health and survival especially in captive species, but more research is needed to understand how the GM connects to host fitness in wild species. We used long-term monitoring data to investigate whether the GM of collared flycatchers Ficedula albicollis associates with annual and lifetime reproductive success (LRS), and survival to the following breeding season. This is the first study that 1) characterized the collared flycatcher GM, and 2) investigated how variation in the GM related to LRS in wild birds. Our results showed that higher GM diversity was associated with a higher annual and lifetime reproductive success in especially male collared flycatchers. We also found that the compositional variation in collared flycatcher GMs was explained by sex, age, and breeding habitat, but not by annual or lifetime reproductive success. Individuals that died before the next breeding season had higher abundances of ASVs belonging to the pathogenic families Enterobacteriaceae and Parachlamydiaceae , and the genera Corynebacteria and Sphingomonas . Our results show that the GM associates with different aspects of host fitness in a wild bird population. More research is needed to evaluate if there is a causal relationship between the GM and individual fitness. These findings also contribute to our understanding of the GMs role in evolution by elucidating the connection between the GM (trait) and reproductive success.

10.1101/2024.08.12.607561

Cite

Citations (0)

The nature of workplace bullying experienced by teachers and the biopsychosocial health effects

South African Journal of Education (2015)

Jaqueline De Vos G.J.C. Kirsten

This article reports on the nature of workplace bullying experienced by teachers in South African schools and the biopsychosocial health effects that may arise from such victimisation. Voluntary victimised teachers who wanted to share their experiences were sampled using a lifestyle magazine and online articles. Twenty-seven teachers participated in the study. Data was collected through telephonic semi-structured phenomenological interviews and personal documents. Interpretive Phenomenological Analysis (IPA) was further used to analyse and interpret qualitative data. Findings indicated that bullying is mostly perpetrated by principals, who often use colleagues as accomplices, and that the bullying mostly tends to be psychological in nature. Participants reported experiencing various physical, psychological and social health problems after being victimised. It was further recognised that health problems do not occur in isolation, but if contextualised, may form part of a list of psychiatric conditions, such as depression, posttraumatic stress disorder, and in isolated cases, panic attacks. Victimised teachers’ health may have a significant impact on the teaching-learning process, acting as a barrier to learning, which may consequently have a negative impact on the organisational culture and the South African emerging economy. Keywords : biopsychosocial health effects; biopsychosocial model; colleague-witnesses; depression; phenomenology; posttraumatic stress disorder (PTSD); principals, schools; teachers; workplace bullying

Biopsychosocial model

10.15700/saje.v35n3a1138

Cite

Citations (37)

Psychological violence at a multi-campus further education and training college : articles

South African Journal of Higher Education (2015)

Helen Meyer G.J.C. Kirsten

Research indicates that those employed in the education sector are especially susceptible to psychological violence. This study aimed to determine the nature, more specifically the prevalence, severity and perpetrators of psychological violence at a multi-campus South African Further Education and Training (FET) College. A Psychological Violence Scale was developed and distributed to the study population of 262 staff members at six campuses and Corporate Centre of an FET College; 174 questionnaires were completed and returned. Findings indicated that staff members experienced psychological violence as prevalent, severe and mostly from superiors.

Source

Cite

Citations (0)

[Ways of instruction in the field of physical education of children and adolescents].

PubMed (1956)

G.J.C. Kirsten

Physical Education

Source

Cite

Citations (0)