title: Effects of coping style, social relationships and support on New Zealanders well-being during the COVID-19 pandemic

authors: Perry, Andrea

subjects: COVID-19

abstract: In early 2020 during the COVID-19 pandemic, the New Zealand Government implemented unprecedented measures such as lockdowns and social distancing. This research investigated the relationships between different coping styles, social support, social networks, social activity, and the impact on the mental health of adult New Zealanders during July and August 2020. At this point, New Zealand had successfully eliminated COVID-19 from the community (with the only cases being reported in quarantine facilities from arrivals to the country). 

Adult participants (18 years or above) were recruited in New Zealand through Facebook community groups and flyers placed in community locations such as medical centres, schools, and university campuses, to participate in an online survey between 13th July 2020 and 11th August 2020. The survey included: demographic questions, study-specific COVID-19 related questions, and seven standardised measures. We assessed three aspects of social support (perceived social support (Multidimensional Scale of Perceived Social Support (MPSS)), social network (Lubben Social Network Scale – revised (LSNR-R), social activities (Social Activity Log (SAL)), coping styles (Brief COPE), depression, anxiety, and stress (Depression, Anxiety and Stress Scale (DASS)), post-traumatic stress (The Abbreviated PCL-C - The Post-Traumatic Checklist), and post-traumatic growth (Post Traumatic Growth Inventory).

Our research investigated predictors of well-being and distress, including demographic variables (age group and gender), previous mental health diagnoses, coping styles, and social support. We hypothesised that higher scores in dysfunctional coping styles and lower scores on social support measures would be associated with higher distress and lower well-being. Our final sample contained 698 valid responses, consisting of 67% female (n=468), 31% male (n=217) and 2% other gender or did not specify (n=13). 

Our models significantly predicted variance in depression (55%), anxiety (48%), stress (52%), PTSD (56%), and post-traumatic growth (41%). Mean scores for depression, anxiety, stress, and dysfunctional coping styles were significantly higher for the youngest age group (18- to 24-year-olds) compared to older age groups. In addition, 18- to 24-year-olds experienced the biggest loss of perceived social support and size of social networks since the COVID-19 pandemic. However, in our regression models, the dysfunctional coping styles of behavioural disengagement and self-blame and a previous mental health diagnosis were consistently among the most common predictors for depression, anxiety, stress, and PTSD. Higher perceived social support was associated with lower levels of depression and PTSD, and higher social activity was associated with lower depression and stress scores. 

Furthermore, significant common predictors of distress included reduced perceived social support since the COVID-19 pandemic (for anxiety and stress) and social networks (for depression and PTSD). Social activity and adaptive coping styles (active coping, positive reframing, religion, emotional support) were significant predictors of post-traumatic growth. Overall, coping styles accounted for more variance (across all mental health outcomes) than age group, gender, previous mental health diagnoses or social support variables.

This research highlighted the disproportional effect that the COVID-19 pandemic was having on younger adults in New Zealand and stressed the need for strong social support and education on adaptive coping styles to reduce distress and improve well-being.

text: Effects of coping style, social relationships and support on New Zealanders well-being during the COVID-19 pandemic In early 2020 during the COVID-19 pandemic, the New Zealand Government implemented unprecedented measures such as lockdowns and social distancing. This research investigated the relationships between different coping styles, social support, social networks, social activity, and the impact on the mental health of adult New Zealanders during July and August 2020. At this point, New Zealand had successfully eliminated COVID-19 from the community (with the only cases being reported in quarantine facilities from arrivals to the country). 

Adult participants (18 years or above) were recruited in New Zealand through Facebook community groups and flyers placed in community locations such as medical centres, schools, and university campuses, to participate in an online survey between 13th July 2020 and 11th August 2020. The survey included: demographic questions, study-specific COVID-19 related questions, and seven standardised measures. We assessed three aspects of social support (perceived social support (Multidimensional Scale of Perceived Social Support (MPSS)), social network (Lubben Social Network Scale – revised (LSNR-R), social activities (Social Activity Log (SAL)), coping styles (Brief COPE), depression, anxiety, and stress (Depression, Anxiety and Stress Scale (DASS)), post-traumatic stress (The Abbreviated PCL-C - The Post-Traumatic Checklist), and post-traumatic growth (Post Traumatic Growth Inventory).

Our research investigated predictors of well-being and distress, including demographic variables (age group and gender), previous mental health diagnoses, coping styles, and social support. We hypothesised that higher scores in dysfunctional coping styles and lower scores on social support measures would be associated with higher distress and lower well-being. Our final sample contained 698 valid responses, consisting of 67% female (n=468), 31% male (n=217) and 2% other gender or did not specify (n=13). 

Our models significantly predicted variance in depression (55%), anxiety (48%), stress (52%), PTSD (56%), and post-traumatic growth (41%). Mean scores for depression, anxiety, stress, and dysfunctional coping styles were significantly higher for the youngest age group (18- to 24-year-olds) compared to older age groups. In addition, 18- to 24-year-olds experienced the biggest loss of perceived social support and size of social networks since the COVID-19 pandemic. However, in our regression models, the dysfunctional coping styles of behavioural disengagement and self-blame and a previous mental health diagnosis were consistently among the most common predictors for depression, anxiety, stress, and PTSD. Higher perceived social support was associated with lower levels of depression and PTSD, and higher social activity was associated with lower depression and stress scores. 

Furthermore, significant common predictors of distress included reduced perceived social support since the COVID-19 pandemic (for anxiety and stress) and social networks (for depression and PTSD). Social activity and adaptive coping styles (active coping, positive reframing, religion, emotional support) were significant predictors of post-traumatic growth. Overall, coping styles accounted for more variance (across all mental health outcomes) than age group, gender, previous mental health diagnoses or social support variables.

This research highlighted the disproportional effect that the COVID-19 pandemic was having on younger adults in New Zealand and stressed the need for strong social support and education on adaptive coping styles to reduce distress and improve well-being.

year: 2022

title: Genomic insights into the evolution of the parasitoid Microctonus aethiopoides

authors: Hussain, Meeran

abstract: Parasitoids are used as biocontrol agents in classical biological control programmes for controlling invasive pest populations. In Aotearoa New Zealand, there are two strains of Microctonus aethiopoides that have been used against two serious pest weevils of the Sitona group. However, there is limited understanding of M. aethiopoides adaptability, particularly in the area of reproductive mode and host associations. My thesis explores these gaps, using population and comparative genomic approaches to investigate the adaptability of M. aethiopoides.
Chapter 2 is a review that synthesises global research on parasitoid adaptation and identifies knowledge gaps across four key traits i.e., reproductive mode, olfaction, thermal tolerance, and microbiomes. Using the three Microctonus species in New Zealand as a focal example, this chapters explains why these traits matter for biocontrol and how genomic technologies reveal their underlying molecular mechanisms. 
Chapter 3 explores the adaptation of Irish asexual M. aethiopoides in New Zealand by analysing whole-genome resequencing data from 43 individuals representing historic (Ireland) and contemporary populations. The study reveals two distinct genetic clusters, most likely reflecting the genetic ancestry of introduced populations rather than post-introduction geographic isolation. All populations exhibit very low diversity and limited population expansion since release, consistent with their asexual nature and suggesting limited adaptation. Asexual M. aethiopoides show some heterozygosity across populations, supporting automictic thelytoky, likely via central fusion, as the primary reproductive mechanism. However, linkage disequilibrium patterns resemble those of sexual organisms, raising the possibility of facultative sex. This chapter sheds light on the adaptation, spread, and reproductive strategies of asexual M. aethiopoides in New Zealand.
Chapter 4 further examines parasitoid adaptation, with a focus on host-associated divergence. Using eight newly assembled genomes from M. aethiopoides strains collected from three different hosts (Hypera postica, Sitona discoideus, S. obsoletus) and geographically distinct regions, this study investigates how host use and geography shape genomic structure. Comparative genomics reveals a clear host-associated phylogenetic split, with the H. postica lineage distinct from Sitona-associated lineages. Heterozygosity patterns support this separation, showing highest diversity in the H. postica group. However, gene families are mostly conserved across strains, with transposable element-related genes showing rapid evolution, suggesting their active role in genome restructuring. Chemosensory genes are also largely conserved, with only modest variation in odourant receptors that may reflect host-associated differences, although fragmentation and annotation bias cannot be ruled out. Overall, host association appears to be a key driver of divergence in M. aethiopoides, largely shaped by genome-level variation rather than major shifts in host-specific gene families.
Finally, Chapter 5 assembles and characterises the first complete mitochondrial genome of M. aethiopoides, generated using a hybrid Oxford Nanopore-Illumina assembly. This study uncovers a long circular (33,173 bp) mitogenome with a unique gene arrangement, contributing a valuable genetic resource for future studies of mitochondrial evolution in parasitoids.
Overall, my thesis demonstrates how genomic technologies can be used to provide a more comprehensive understanding of the evolutionary factors shaping a species’ genome and population structure. It provides a valuable genomic resource and sets a foundation of resources for continuing to build understanding of adaptation in the context of asexuality and host association in M. aethiopoides.

text: Genomic insights into the evolution of the parasitoid Microctonus aethiopoides Parasitoids are used as biocontrol agents in classical biological control programmes for controlling invasive pest populations. In Aotearoa New Zealand, there are two strains of Microctonus aethiopoides that have been used against two serious pest weevils of the Sitona group. However, there is limited understanding of M. aethiopoides adaptability, particularly in the area of reproductive mode and host associations. My thesis explores these gaps, using population and comparative genomic approaches to investigate the adaptability of M. aethiopoides.
Chapter 2 is a review that synthesises global research on parasitoid adaptation and identifies knowledge gaps across four key traits i.e., reproductive mode, olfaction, thermal tolerance, and microbiomes. Using the three Microctonus species in New Zealand as a focal example, this chapters explains why these traits matter for biocontrol and how genomic technologies reveal their underlying molecular mechanisms. 
Chapter 3 explores the adaptation of Irish asexual M. aethiopoides in New Zealand by analysing whole-genome resequencing data from 43 individuals representing historic (Ireland) and contemporary populations. The study reveals two distinct genetic clusters, most likely reflecting the genetic ancestry of introduced populations rather than post-introduction geographic isolation. All populations exhibit very low diversity and limited population expansion since release, consistent with their asexual nature and suggesting limited adaptation. Asexual M. aethiopoides show some heterozygosity across populations, supporting automictic thelytoky, likely via central fusion, as the primary reproductive mechanism. However, linkage disequilibrium patterns resemble those of sexual organisms, raising the possibility of facultative sex. This chapter sheds light on the adaptation, spread, and reproductive strategies of asexual M. aethiopoides in New Zealand.
Chapter 4 further examines parasitoid adaptation, with a focus on host-associated divergence. Using eight newly assembled genomes from M. aethiopoides strains collected from three different hosts (Hypera postica, Sitona discoideus, S. obsoletus) and geographically distinct regions, this study investigates how host use and geography shape genomic structure. Comparative genomics reveals a clear host-associated phylogenetic split, with the H. postica lineage distinct from Sitona-associated lineages. Heterozygosity patterns support this separation, showing highest diversity in the H. postica group. However, gene families are mostly conserved across strains, with transposable element-related genes showing rapid evolution, suggesting their active role in genome restructuring. Chemosensory genes are also largely conserved, with only modest variation in odourant receptors that may reflect host-associated differences, although fragmentation and annotation bias cannot be ruled out. Overall, host association appears to be a key driver of divergence in M. aethiopoides, largely shaped by genome-level variation rather than major shifts in host-specific gene families.
Finally, Chapter 5 assembles and characterises the first complete mitochondrial genome of M. aethiopoides, generated using a hybrid Oxford Nanopore-Illumina assembly. This study uncovers a long circular (33,173 bp) mitogenome with a unique gene arrangement, contributing a valuable genetic resource for future studies of mitochondrial evolution in parasitoids.
Overall, my thesis demonstrates how genomic technologies can be used to provide a more comprehensive understanding of the evolutionary factors shaping a species’ genome and population structure. It provides a valuable genomic resource and sets a foundation of resources for continuing to build understanding of adaptation in the context of asexuality and host association in M. aethiopoides.

year: 2026

title: Ka Māpuna: Towards a rangatiratanga framework for the governance of waterways

authors: Martin, Betsan

abstract: Rangatiratanga is thenavigational courseforthis research, the aspiration that guides a frameworkfor thegovernance which, in respect ofwaterways and Te Taiao secures mauri, ecosystem health, and water for domestic and commercial use. Rangatiratanga encompasses mana whakahaeredecision-making throughout all relevantgovernance systems. In respect of resource governance, this needs to be achieved through mana whenua authorities and co-governance institutions and procedures.

text: Ka Māpuna: Towards a rangatiratanga framework for the governance of waterways Rangatiratanga is thenavigational courseforthis research, the aspiration that guides a frameworkfor thegovernance which, in respect ofwaterways and Te Taiao secures mauri, ecosystem health, and water for domestic and commercial use. Rangatiratanga encompasses mana whakahaeredecision-making throughout all relevantgovernance systems. In respect of resource governance, this needs to be achieved through mana whenua authorities and co-governance institutions and procedures.

year: 2021