title: How pro-poor is the selection of seasonal migrant workers from Tonga under New Zealand’s Recognised Seasonal Employer (RSE) Program?

authors: Gibson, John

subjects: development

abstract: Temporary migration programs for unskilled workers are increasingly being proposed as a way to both relieve labour shortages in developed countries and aid development in sending countries without entailing many of the costs associated with permanent migration. New Zealand’s new Recognised Seasonal Employer (RSE) program is designed with both these goals in mind, enabling unskilled workers from the Pacific Islands to work in horticulture and viticulture in New Zealand for a period of up to seven months. However, the development impact on a sending country will depend not only on how many workers participate, but also on who participates. This paper uses new survey data from Tonga to examine the process of selecting Tongans to work in the RSE, and to analyze how pro-poor the recruitment process has been to date. We find that the workers recruited come from largely agricultural backgrounds and have lower average incomes and schooling levels than Tongans not participating in the program. We also compare the characteristics of RSE workers to those of Tongans applying to permanently migrate to New Zealand through the Pacific Access Category, and find the RSE workers to be more rural and less educated. The RSE therefore does seem to have succeeded in creating new opportunities for relatively poor and unskilled Tongans to work in New Zealand.

text: How pro-poor is the selection of seasonal migrant workers from Tonga under New Zealand’s Recognised Seasonal Employer (RSE) Program? Temporary migration programs for unskilled workers are increasingly being proposed as a way to both relieve labour shortages in developed countries and aid development in sending countries without entailing many of the costs associated with permanent migration. New Zealand’s new Recognised Seasonal Employer (RSE) program is designed with both these goals in mind, enabling unskilled workers from the Pacific Islands to work in horticulture and viticulture in New Zealand for a period of up to seven months. However, the development impact on a sending country will depend not only on how many workers participate, but also on who participates. This paper uses new survey data from Tonga to examine the process of selecting Tongans to work in the RSE, and to analyze how pro-poor the recruitment process has been to date. We find that the workers recruited come from largely agricultural backgrounds and have lower average incomes and schooling levels than Tongans not participating in the program. We also compare the characteristics of RSE workers to those of Tongans applying to permanently migrate to New Zealand through the Pacific Access Category, and find the RSE workers to be more rural and less educated. The RSE therefore does seem to have succeeded in creating new opportunities for relatively poor and unskilled Tongans to work in New Zealand.

year: 2008-06

title: High cell density cultivation of Escherichia coli with surface anchored transglucosidase for use as whole-cell biocatalyst for α-arbutin synthesis

authors: Wu, Po-Hung

subjects: Escherichia coli

abstract: A fed-batch culture strategy for the production of recombinant Escherichia coli cells anchoring surface-displayed transglucosidase for use as a whole-cell biocatalyst for α-arbutin synthesis was developed. Lactose was used as an inducer of the recombinant protein. In fed-batch cultures, dissolved oxygen was used as the feed indicator for glucose, thus accumulation of glucose and acetate that affected the cell growth and recombinant protein production was avoided. Fed-batch fermentation with lactose induction yielded a biomass of 18 g/L, and the cells possessed very high transglucosylation activity. In the synthesis of α-arbutin by hydroquinone glucosylation, the whole-cell biocatalysts showed a specific activity of 501 nkat/g cell and produced 21 g/L of arbutin, which corresponded to 76% molar conversion. A sixfold increased productivity of whole cell biocatalysts was obtained in the fed-batch culture with lactose induction, as compared to batch culture induced by IPTG.

text: High cell density cultivation of Escherichia coli with surface anchored transglucosidase for use as whole-cell biocatalyst for α-arbutin synthesis A fed-batch culture strategy for the production of recombinant Escherichia coli cells anchoring surface-displayed transglucosidase for use as a whole-cell biocatalyst for α-arbutin synthesis was developed. Lactose was used as an inducer of the recombinant protein. In fed-batch cultures, dissolved oxygen was used as the feed indicator for glucose, thus accumulation of glucose and acetate that affected the cell growth and recombinant protein production was avoided. Fed-batch fermentation with lactose induction yielded a biomass of 18 g/L, and the cells possessed very high transglucosylation activity. In the synthesis of α-arbutin by hydroquinone glucosylation, the whole-cell biocatalysts showed a specific activity of 501 nkat/g cell and produced 21 g/L of arbutin, which corresponded to 76% molar conversion. A sixfold increased productivity of whole cell biocatalysts was obtained in the fed-batch culture with lactose induction, as compared to batch culture induced by IPTG.

year: 2008

title: Boat electrofishing salvage of fish in the Lower Mangamahoe Dam reservoir

authors: Hicks, Brendan J.

abstract: The aim of the survey was to salvage fish from the Lower Mangamahoe Dam reservoir before dewatering and dam removal. We used the University of Waikato’s 4.5 m-long, aluminium-hulled electrofishing boat to catch a total of 140 fish weighing an estimated 37.0 kg along 8 fishing tracks sites on 24 February 2022. These tracks comprised 2,807 lineal m and 11,228 m2 in area. Shortfin eels (Anguilla australis) and common bullies (Gobiomorphus cotidianus) were the only fish species present. Mean density of eels caught was 2.9 fish 100 m–2 and mean biomass was 7.84 g m–2. The eels and bullies were transferred to sites downstream in the Waiwhakaiho River by iwi members of the two hapū - Ngāti Te Whiti and Ngāti Tawhirikura. Water clarity, expressed as black disc distance (BDD, 1.05 m), was good for a shallow lake, and water temperature and water conductivity were close to optimum for electrofishing. Poor water clarity can reduce the efficiency of electrofishing, so we left time after fishing each track for the sediment suspended by the propellor wash to sink before refishing a track.

text: Boat electrofishing salvage of fish in the Lower Mangamahoe Dam reservoir The aim of the survey was to salvage fish from the Lower Mangamahoe Dam reservoir before dewatering and dam removal. We used the University of Waikato’s 4.5 m-long, aluminium-hulled electrofishing boat to catch a total of 140 fish weighing an estimated 37.0 kg along 8 fishing tracks sites on 24 February 2022. These tracks comprised 2,807 lineal m and 11,228 m2 in area. Shortfin eels (Anguilla australis) and common bullies (Gobiomorphus cotidianus) were the only fish species present. Mean density of eels caught was 2.9 fish 100 m–2 and mean biomass was 7.84 g m–2. The eels and bullies were transferred to sites downstream in the Waiwhakaiho River by iwi members of the two hapū - Ngāti Te Whiti and Ngāti Tawhirikura. Water clarity, expressed as black disc distance (BDD, 1.05 m), was good for a shallow lake, and water temperature and water conductivity were close to optimum for electrofishing. Poor water clarity can reduce the efficiency of electrofishing, so we left time after fishing each track for the sediment suspended by the propellor wash to sink before refishing a track.

year: 2022