Описание
This dataset is from a paper by Dussex et al. looking at the low spatial genetic differentiation associated rapid recolonization of the New Zealand fur seal Arctocephalus forsteri.
Population declines resulting from anthropogenic activities are of major consequence for the long-term survival of species because the resulting loss of genetic diversity can lead to extinction via the effects of inbreeding depression, fixation of deleterious mutations, and loss of adaptive potential. Otariid pinnipeds have been exploited commercially to near extinction with some species showing higher demographic resilience and recolonization potential than others. The New Zealand fur seal (NZFS) was heavily impacted by commercial sealing between the late 18th and early 19th centuries, but has recolonized its former range in southern Australia. The species has also recolonized its former range in New Zealand, yet little is known about the pattern of recolonization. Here, we first used 11 microsatellite markers (n = 383) to investigate the contemporary population structure and dispersal patterns in the NZFS (Arctocephalus forsteri). Secondly, we model postsealing recolonization with 1 additional mtDNA cytochrome b (n = 261) marker. Our data identified 3 genetic clusters: an Australian, a subantarctic, and a New Zealand one, with a weak and probably transient subdivision within the latter cluster. Demographic history scenarios supported a recolonization of the New Zealand coastline from remote west coast colonies, which is consistent with contemporary gene flow and with the species’ high resilience. The present data suggest the management of distinct genetic units in the North and South of New Zealand along a genetic gradient. Assignment of individuals to their colony of origin was limited (32%) with the present data indicating the current microsatellite markers are unlikely sufficient to assign fisheries bycatch of NZFSs to colonies.
Записи данных
Данные этого occurrence ресурса были опубликованы в виде Darwin Core Archive (DwC-A), который является стандартным форматом для обмена данными о биоразнообразии в виде набора из одной или нескольких таблиц. Основная таблица данных содержит 19 записей.
Данный экземпляр IPT архивирует данные и таким образом служит хранилищем данных. Данные и метаданные ресурсов доступны для скачивания в разделе Загрузки. В таблице версий перечислены другие версии ресурса, которые были доступны публично, что позволяет отслеживать изменения, внесенные в ресурс с течением времени.
Версии
В таблице ниже указаны только опубликованные версии ресурса, которые доступны для свободного скачивания.
1.0Как оформить ссылку
Исследователи должны дать ссылку на эту работу следующим образом:
Dussex N, Robertson B C, Salis A T, Kalinin A, Best H, Gemmell N J (2024). Breeding colonies of the New Zealand fur seal Arctocephalus forsteri. Version 1.0. Southwestern Pacific Ocean Biogeographic Information System (OBIS) Node. Occurrence dataset. https://nzobisipt.niwa.co.nz/resource?r=nzfs_breeding_colonys&v=1.0
Права
Исследователи должны соблюдать следующие права:
Публикующей организацией и владельцем прав на данную работу является Southwestern Pacific Ocean Biogeographic Information System (OBIS) Node. Эта работа находится под лицензией Creative Commons Attribution (CC-BY 4.0).
Регистрация в GBIF
Этот ресурс не был зарегистрирован в GBIF
Ключевые слова
Occurrence; Observation
Контакты
- Metadata Provider ●
- Originator ●
- Point Of Contact
- Researcher
- Originator
- Originator
- Researcher
- Originator
- Researcher
- Originator
- Researcher
- Originator
- Researcher
Географический охват
New Zealand and Australia
| Ограничивающие координаты | Юг Запад [-48,025, 122,048], Север Восток [-33,761, 179,024] |
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Методы сбора
Dussex et al. (2016) investigated the contemporary population structure and dispersal patterns of the New Zealand fur seal by obtaining genetic samples from individuals in breeding colonies. Supplementary material provided by Dussex et al. (2016) include Mitochondrial Cytochrome b sequences for 261 NZ fur seal pups, Microsatellite genotypes for 383 NZ fur seal pups, and Microsatellite and Cytochrome b input data file for DIYABC
| Охват исследования | Breeding colonies of New Zealand fur seal in New Zealand and Australia. |
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Описание этапа методики:
- Otariids are capable of significant dispersal, which means that analyzing genetic data from adults would likely underestimate the true population structure of the species. Moreover, high dispersal presents the possibility of intra- and inter-seasonal variation in the genetic composition of adults at colonies and haulouts (e.g., Robertson et al. 2006). In order to avoid a bias caused by high adult dispersal and yearly variation in dispersal, we sampled pups, as they are a direct genetic representation of each breeding colony (i.e., influenced by female philopatry) in any given year.
- Genetic samples were obtained from 397 NZFS pups at 19 breeding colonies covering the entire range of the species. For each pup, a small piece of skin was taken from the tip of a digit on a hind flipper using piglet ear notch pliers (Majluf and Goebel 1992) and stored in 70% ethanol.
Библиографические ссылки
- Dussex, Nicolas et al. (2018). Data from: Low spatial genetic differentiation associated with rapid recolonization in the New Zealand fur seal Arctocephalus forsteri [Dataset]. Dryad. https://doi.org/10.5061/dryad.4v551
- Nicolas Dussex, Bruce C. Robertson, Alexander T. Salis, Aleksandr Kalinin, Hugh Best, Neil J. Gemmell, Low Spatial Genetic Differentiation Associated with Rapid Recolonization in the New Zealand Fur Seal Arctocephalus forsteri, Journal of Heredity, Volume 107, Issue 7, 2016, Pages 581–592 https://doi.org/10.1093/jhered/esw056
Дополнительные метаданные
marine, harvested by iOBIS
| Альтернативные идентификаторы | https://nzobisipt.niwa.co.nz/resource?r=nzfs_breeding_colonys |
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