Nautilus at risk--estimating population size and demography of Nautilus pompilius.

The low fecundity, late maturity, long gestation and long life span of Nautilus suggest that this species is vulnerable to over-exploitation. Demand from the ornamental shell trade has contributed to their rapid decline in localized populations. More data from wild populations are needed to design m...

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Autores principales:	Andrew Dunstan, Corey J A Bradshaw, Justin Marshall
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2011
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/e2bb3ba3d7a948359fc112bf06b6a786
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spelling	oai:doaj.org-article:e2bb3ba3d7a948359fc112bf06b6a7862021-11-18T06:58:56ZNautilus at risk--estimating population size and demography of Nautilus pompilius.1932-620310.1371/journal.pone.0016716https://doaj.org/article/e2bb3ba3d7a948359fc112bf06b6a7862011-02-01T00:00:00Zhttps://www.ncbi.nlm.nih.gov/pmc/articles/pmid/21347360/?tool=EBIhttps://doaj.org/toc/1932-6203The low fecundity, late maturity, long gestation and long life span of Nautilus suggest that this species is vulnerable to over-exploitation. Demand from the ornamental shell trade has contributed to their rapid decline in localized populations. More data from wild populations are needed to design management plans which ensure Nautilus persistence. We used a variety of techniques including capture-mark-recapture, baited remote underwater video systems, ultrasonic telemetry and remotely operated vehicles to estimate population size, growth rates, distribution and demographic characteristics of an unexploited Nautilus pompilius population at Osprey Reef (Coral Sea, Australia). We estimated a small and dispersed population of between 844 and 4467 individuals (14.6-77.4 km(-2)) dominated by males (83:17 male:female) and comprised of few juveniles (<10%).These results provide the first Nautilid population and density estimates which are essential elements for long-term management of populations via sustainable catch models. Results from baited remote underwater video systems provide confidence for their more widespread use to assess efficiently the size and density of exploited and unexploited Nautilus populations worldwide.Andrew DunstanCorey J A BradshawJustin MarshallPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 6, Iss 2, p e16716 (2011)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Andrew Dunstan Corey J A Bradshaw Justin Marshall Nautilus at risk--estimating population size and demography of Nautilus pompilius.
description	The low fecundity, late maturity, long gestation and long life span of Nautilus suggest that this species is vulnerable to over-exploitation. Demand from the ornamental shell trade has contributed to their rapid decline in localized populations. More data from wild populations are needed to design management plans which ensure Nautilus persistence. We used a variety of techniques including capture-mark-recapture, baited remote underwater video systems, ultrasonic telemetry and remotely operated vehicles to estimate population size, growth rates, distribution and demographic characteristics of an unexploited Nautilus pompilius population at Osprey Reef (Coral Sea, Australia). We estimated a small and dispersed population of between 844 and 4467 individuals (14.6-77.4 km(-2)) dominated by males (83:17 male:female) and comprised of few juveniles (<10%).These results provide the first Nautilid population and density estimates which are essential elements for long-term management of populations via sustainable catch models. Results from baited remote underwater video systems provide confidence for their more widespread use to assess efficiently the size and density of exploited and unexploited Nautilus populations worldwide.
format	article
author	Andrew Dunstan Corey J A Bradshaw Justin Marshall
author_facet	Andrew Dunstan Corey J A Bradshaw Justin Marshall
author_sort	Andrew Dunstan
title	Nautilus at risk--estimating population size and demography of Nautilus pompilius.
title_short	Nautilus at risk--estimating population size and demography of Nautilus pompilius.
title_full	Nautilus at risk--estimating population size and demography of Nautilus pompilius.
title_fullStr	Nautilus at risk--estimating population size and demography of Nautilus pompilius.
title_full_unstemmed	Nautilus at risk--estimating population size and demography of Nautilus pompilius.
title_sort	nautilus at risk--estimating population size and demography of nautilus pompilius.
publisher	Public Library of Science (PLoS)
publishDate	2011
url	https://doaj.org/article/e2bb3ba3d7a948359fc112bf06b6a786
work_keys_str_mv	AT andrewdunstan nautilusatriskestimatingpopulationsizeanddemographyofnautiluspompilius AT coreyjabradshaw nautilusatriskestimatingpopulationsizeanddemographyofnautiluspompilius AT justinmarshall nautilusatriskestimatingpopulationsizeanddemographyofnautiluspompilius
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Nautilus at risk--estimating population size and demography of Nautilus pompilius.

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