title: Economic management of anthelmintic resistance: model and application

authors: Pech, Caris L.

subjects: anthelmintic resistance

abstract: The increasing prevalence of anthelmintic (drench) resistance in gastrointestinal parasite populations is decreasing the profitability of the Australian sheep industry. Refugia management can delay its development by not exposing a proportion of the worm population to chemical control. A dynamic-optimisation model is used to assess the economic value of refugia for management of the worm species Teladorsagia circumcincta and macrocyclic lactone drenches in an application to Western Australian sheep flocks. A low rate of refugia (2 per cent) is most profitable under standard circumstances because it slows the development of resistance, but also reduces the proportion of the flock not exposed to chemical control. Frequent drench application should remain the primary method of control. However, its efficacy should be preserved through refugia management, rather than greatly reducing treatment frequency.

text: Economic management of anthelmintic resistance: model and application The increasing prevalence of anthelmintic (drench) resistance in gastrointestinal parasite populations is decreasing the profitability of the Australian sheep industry. Refugia management can delay its development by not exposing a proportion of the worm population to chemical control. A dynamic-optimisation model is used to assess the economic value of refugia for management of the worm species Teladorsagia circumcincta and macrocyclic lactone drenches in an application to Western Australian sheep flocks. A low rate of refugia (2 per cent) is most profitable under standard circumstances because it slows the development of resistance, but also reduces the proportion of the flock not exposed to chemical control. Frequent drench application should remain the primary method of control. However, its efficacy should be preserved through refugia management, rather than greatly reducing treatment frequency.

year: 2009

title: A provisional survey of the interaction between net photosynthetic rate, respiratory rate, and thallus water content in some New Zealand cryptogams

authors: Snelgar, W.P.

subjects: bryophytes

abstract: The effect of water content on photosynthetic and respiratory rates in eight lichen species and one bryophyte species were studied using an injection infrared gas analyser technique. All species snowed a strong relationship between net assimilation rate (NAR), respiration rate, and water content similar to relationships reported in published studies overseas. Species from moist habitats showed negative NAR at low water contents. Species from high-light areas showed a depression in NAR at high water contents which could be alleviated by higher light intensities. The experiments confirmed the suitability of New Zealand species for these studies.

text: A provisional survey of the interaction between net photosynthetic rate, respiratory rate, and thallus water content in some New Zealand cryptogams The effect of water content on photosynthetic and respiratory rates in eight lichen species and one bryophyte species were studied using an injection infrared gas analyser technique. All species snowed a strong relationship between net assimilation rate (NAR), respiration rate, and water content similar to relationships reported in published studies overseas. Species from moist habitats showed negative NAR at low water contents. Species from high-light areas showed a depression in NAR at high water contents which could be alleviated by higher light intensities. The experiments confirmed the suitability of New Zealand species for these studies.

year: 1980

title: A collaborative approach to improving youth mental health.

authors: Goodwin, Debbie Waireka Tuhi

subjects: Maori

abstract: Nga Taiohi Whai Marama / Youth Connex was developed collaboratively by three organisations: Health Waikato Mental Health, Te Runanga o Kirikiriroa, and Linkage. These organisations had a vision of creating greater integration and improved pathways between youth and mental health services, as well as providing a service explicitly based on youth-friendly principles. The key aims of Whai Marama Youth Connex are to improve youth’s access to services and contribute to the development of a youth service-provider network. To fulfil this we aim to provide a range of services, integrated pathways and capacity building on several levels, the client level, the provider level and the funder level. Debbie Goodwin (Tuhoe) was employed as the Manager of the service and has a key role in developing the organisation, planning and shaping its services, and employing and managing its’ staff. She will give an overview of how the service is developing in partnership and biculturally, how youth-friendly principles are enacted, and what some of the key issues have been in its early stages.

text: A collaborative approach to improving youth mental health. Nga Taiohi Whai Marama / Youth Connex was developed collaboratively by three organisations: Health Waikato Mental Health, Te Runanga o Kirikiriroa, and Linkage. These organisations had a vision of creating greater integration and improved pathways between youth and mental health services, as well as providing a service explicitly based on youth-friendly principles. The key aims of Whai Marama Youth Connex are to improve youth’s access to services and contribute to the development of a youth service-provider network. To fulfil this we aim to provide a range of services, integrated pathways and capacity building on several levels, the client level, the provider level and the funder level. Debbie Goodwin (Tuhoe) was employed as the Manager of the service and has a key role in developing the organisation, planning and shaping its services, and employing and managing its’ staff. She will give an overview of how the service is developing in partnership and biculturally, how youth-friendly principles are enacted, and what some of the key issues have been in its early stages.

year: 2003