Population Genetics of New Zealand Scampi (Metanephrops challengeri)
A fundamental goal of fisheries management is sustainable harvesting and the preservation of properly functioning populations. Therefore, an important aspect of management is the identification of demographically independent populations (stocks), which is achieved by estimating the movement of indiv...
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ftvictoriauwfig:oai:figshare.com:article/17061971 2023-05-15T15:33:41+02:00 Population Genetics of New Zealand Scampi (Metanephrops challengeri) Verry, Alexander 2017-01-01T00:00:00Z https://doi.org/10.26686/wgtn.17061971.v1 https://figshare.com/articles/thesis/Population_Genetics_of_New_Zealand_Scampi_Metanephrops_challengeri_/17061971 unknown doi:10.26686/wgtn.17061971.v1 https://figshare.com/articles/thesis/Population_Genetics_of_New_Zealand_Scampi_Metanephrops_challengeri_/17061971 Author Retains Copyright Biogeography and Phylogeography Fisheries Management Genetics Population connectivity Scampi Metanephrops challengeri School: School of Biological Sciences 060302 Biogeography and Phylogeography 070403 Fisheries Management 830101 Aquaculture Crustaceans (excl. Rock Lobster and Prawns) Degree Discipline: Ecology and Biodiversity Degree Level: Masters Degree Name: Master of Science Text Thesis 2017 ftvictoriauwfig https://doi.org/10.26686/wgtn.17061971.v1 2021-11-25T00:03:53Z A fundamental goal of fisheries management is sustainable harvesting and the preservation of properly functioning populations. Therefore, an important aspect of management is the identification of demographically independent populations (stocks), which is achieved by estimating the movement of individuals between areas. A range of methods have been developed to determine the level of connectivity among populations; some measure this directly (e.g. mark-recapture) while others use indirect measures (e.g. population genetics). Each species presents a different set of challenges for methods that estimate levels of connectivity. Metanephrops challengeri is a species of nephropid lobster that supports a commercial fishery and inhabits the continental shelf and slope of New Zealand. Very little research on population structure has been reported for this species and it presents a unique set of challenges compared to finfish species. M. challengeri have a short pelagic larval duration lasting up to five days which limits the dispersal potential of larvae, potentially leading to low levels of connectivity among populations. The aim of this study was to examine the genetic population structure of the New Zealand M. challengeri fishery. DNA was extracted from M. challengeri samples collected from the eastern coast of the North Island (from the Bay of Plenty to the Wairarapa), the Chatham Rise, and near the Auckland Islands. DNA from the mitochondrial CO1 gene and nuclear ITS-1 region was amplified and sequenced. The aligned dataset of DNA sequences was then used to estimate levels of both genetic diversity and differentiation, and examine demographic history. Analyses of population structure indicate that M. challengeri from the Auckland Islands region are genetically distinct from M. challengeri inhabiting the Chatham Rise, and those collected from waters off the eastern coast of the North Island. There appears to be gene flow among the sampling sites off the eastern coast of the North Island and on the Chatham Rise, but ... Thesis Auckland Islands Open Access Victoria University of Wellington / Te Herenga Waka New Zealand Bay of Plenty ENVELOPE(-128.761,-128.761,52.837,52.837) |
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Open Access Victoria University of Wellington / Te Herenga Waka |
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ftvictoriauwfig |
language |
unknown |
topic |
Biogeography and Phylogeography Fisheries Management Genetics Population connectivity Scampi Metanephrops challengeri School: School of Biological Sciences 060302 Biogeography and Phylogeography 070403 Fisheries Management 830101 Aquaculture Crustaceans (excl. Rock Lobster and Prawns) Degree Discipline: Ecology and Biodiversity Degree Level: Masters Degree Name: Master of Science |
spellingShingle |
Biogeography and Phylogeography Fisheries Management Genetics Population connectivity Scampi Metanephrops challengeri School: School of Biological Sciences 060302 Biogeography and Phylogeography 070403 Fisheries Management 830101 Aquaculture Crustaceans (excl. Rock Lobster and Prawns) Degree Discipline: Ecology and Biodiversity Degree Level: Masters Degree Name: Master of Science Verry, Alexander Population Genetics of New Zealand Scampi (Metanephrops challengeri) |
topic_facet |
Biogeography and Phylogeography Fisheries Management Genetics Population connectivity Scampi Metanephrops challengeri School: School of Biological Sciences 060302 Biogeography and Phylogeography 070403 Fisheries Management 830101 Aquaculture Crustaceans (excl. Rock Lobster and Prawns) Degree Discipline: Ecology and Biodiversity Degree Level: Masters Degree Name: Master of Science |
description |
A fundamental goal of fisheries management is sustainable harvesting and the preservation of properly functioning populations. Therefore, an important aspect of management is the identification of demographically independent populations (stocks), which is achieved by estimating the movement of individuals between areas. A range of methods have been developed to determine the level of connectivity among populations; some measure this directly (e.g. mark-recapture) while others use indirect measures (e.g. population genetics). Each species presents a different set of challenges for methods that estimate levels of connectivity. Metanephrops challengeri is a species of nephropid lobster that supports a commercial fishery and inhabits the continental shelf and slope of New Zealand. Very little research on population structure has been reported for this species and it presents a unique set of challenges compared to finfish species. M. challengeri have a short pelagic larval duration lasting up to five days which limits the dispersal potential of larvae, potentially leading to low levels of connectivity among populations. The aim of this study was to examine the genetic population structure of the New Zealand M. challengeri fishery. DNA was extracted from M. challengeri samples collected from the eastern coast of the North Island (from the Bay of Plenty to the Wairarapa), the Chatham Rise, and near the Auckland Islands. DNA from the mitochondrial CO1 gene and nuclear ITS-1 region was amplified and sequenced. The aligned dataset of DNA sequences was then used to estimate levels of both genetic diversity and differentiation, and examine demographic history. Analyses of population structure indicate that M. challengeri from the Auckland Islands region are genetically distinct from M. challengeri inhabiting the Chatham Rise, and those collected from waters off the eastern coast of the North Island. There appears to be gene flow among the sampling sites off the eastern coast of the North Island and on the Chatham Rise, but ... |
format |
Thesis |
author |
Verry, Alexander |
author_facet |
Verry, Alexander |
author_sort |
Verry, Alexander |
title |
Population Genetics of New Zealand Scampi (Metanephrops challengeri) |
title_short |
Population Genetics of New Zealand Scampi (Metanephrops challengeri) |
title_full |
Population Genetics of New Zealand Scampi (Metanephrops challengeri) |
title_fullStr |
Population Genetics of New Zealand Scampi (Metanephrops challengeri) |
title_full_unstemmed |
Population Genetics of New Zealand Scampi (Metanephrops challengeri) |
title_sort |
population genetics of new zealand scampi (metanephrops challengeri) |
publishDate |
2017 |
url |
https://doi.org/10.26686/wgtn.17061971.v1 https://figshare.com/articles/thesis/Population_Genetics_of_New_Zealand_Scampi_Metanephrops_challengeri_/17061971 |
long_lat |
ENVELOPE(-128.761,-128.761,52.837,52.837) |
geographic |
New Zealand Bay of Plenty |
geographic_facet |
New Zealand Bay of Plenty |
genre |
Auckland Islands |
genre_facet |
Auckland Islands |
op_relation |
doi:10.26686/wgtn.17061971.v1 https://figshare.com/articles/thesis/Population_Genetics_of_New_Zealand_Scampi_Metanephrops_challengeri_/17061971 |
op_rights |
Author Retains Copyright |
op_doi |
https://doi.org/10.26686/wgtn.17061971.v1 |
_version_ |
1766364216991678464 |