Assessing body weight as a predictor of vulnerability for extinction in marine invertebrates

ABSTRACT In tetrapods, body weight (BW) is a reliable predictor of extinction risk as it is representative of their life cycle, physiology, and ecology: low BW species tend to be less vulnerable compared to larger ones. In marine fish, excepting elasmobranchs, sturgeon, and salmonids, this relations...

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Autores principales:	González-Valdovinos,Marcela Isabel, Monte-Luna,Pablo del, Trujillo-Millán,Oscar
Lenguaje:	English
Publicado:	Pontificia Universidad Católica de Valparaíso. Facultad de Recursos Naturales. Escuela de Ciencias del Mar 2019
Materias:	conservation lists endangered species body mass extinction risk
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-560X2019000100138
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spelling	oai:scielo:S0718-560X20190001001382019-03-27Assessing body weight as a predictor of vulnerability for extinction in marine invertebratesGonzález-Valdovinos,Marcela IsabelMonte-Luna,Pablo delTrujillo-Millán,Oscar conservation lists endangered species body mass extinction risk ABSTRACT In tetrapods, body weight (BW) is a reliable predictor of extinction risk as it is representative of their life cycle, physiology, and ecology: low BW species tend to be less vulnerable compared to larger ones. In marine fish, excepting elasmobranchs, sturgeon, and salmonids, this relationship is not statistically significant; and in marine invertebrates it is unknown. In this study, the BW was evaluated as a predictor of extinction vulnerability in marine invertebrates at two taxonomic levels, assuming that endangered species lists indicate true extinction risk. At the order level, a correlation was performed between BW and the proportion of species in conservation lists concerning the total number of species (TS) of 17 orders. At the species level, we compared the average BW of listed versus not listed species by fitting a logistic regression between the BW and the presence/absence of species in these lists. We found no relationship between TS and BW, but there was a significant difference in the BW of listed versus not listed species. The relationship between the BW and the presence/absence of species in conservation lists was weaker in marine invertebrates compared to that in tetrapods and fish. The BW is an unreliable predictor of extinction risk in marine invertebrates. Thus conservation efforts should focus on maintaining and restoring the microhabitat of invertebrate species.info:eu-repo/semantics/openAccessPontificia Universidad Católica de Valparaíso. Facultad de Recursos Naturales. Escuela de Ciencias del MarLatin american journal of aquatic research v.47 n.1 20192019-03-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-560X2019000100138en10.3856/vol47-issue1-fulltext-15
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	conservation lists endangered species body mass extinction risk
spellingShingle	conservation lists endangered species body mass extinction risk González-Valdovinos,Marcela Isabel Monte-Luna,Pablo del Trujillo-Millán,Oscar Assessing body weight as a predictor of vulnerability for extinction in marine invertebrates
description	ABSTRACT In tetrapods, body weight (BW) is a reliable predictor of extinction risk as it is representative of their life cycle, physiology, and ecology: low BW species tend to be less vulnerable compared to larger ones. In marine fish, excepting elasmobranchs, sturgeon, and salmonids, this relationship is not statistically significant; and in marine invertebrates it is unknown. In this study, the BW was evaluated as a predictor of extinction vulnerability in marine invertebrates at two taxonomic levels, assuming that endangered species lists indicate true extinction risk. At the order level, a correlation was performed between BW and the proportion of species in conservation lists concerning the total number of species (TS) of 17 orders. At the species level, we compared the average BW of listed versus not listed species by fitting a logistic regression between the BW and the presence/absence of species in these lists. We found no relationship between TS and BW, but there was a significant difference in the BW of listed versus not listed species. The relationship between the BW and the presence/absence of species in conservation lists was weaker in marine invertebrates compared to that in tetrapods and fish. The BW is an unreliable predictor of extinction risk in marine invertebrates. Thus conservation efforts should focus on maintaining and restoring the microhabitat of invertebrate species.
author	González-Valdovinos,Marcela Isabel Monte-Luna,Pablo del Trujillo-Millán,Oscar
author_facet	González-Valdovinos,Marcela Isabel Monte-Luna,Pablo del Trujillo-Millán,Oscar
author_sort	González-Valdovinos,Marcela Isabel
title	Assessing body weight as a predictor of vulnerability for extinction in marine invertebrates
title_short	Assessing body weight as a predictor of vulnerability for extinction in marine invertebrates
title_full	Assessing body weight as a predictor of vulnerability for extinction in marine invertebrates
title_fullStr	Assessing body weight as a predictor of vulnerability for extinction in marine invertebrates
title_full_unstemmed	Assessing body weight as a predictor of vulnerability for extinction in marine invertebrates
title_sort	assessing body weight as a predictor of vulnerability for extinction in marine invertebrates
publisher	Pontificia Universidad Católica de Valparaíso. Facultad de Recursos Naturales. Escuela de Ciencias del Mar
publishDate	2019
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-560X2019000100138
work_keys_str_mv	AT gonzalezvaldovinosmarcelaisabel assessingbodyweightasapredictorofvulnerabilityforextinctioninmarineinvertebrates AT montelunapablodel assessingbodyweightasapredictorofvulnerabilityforextinctioninmarineinvertebrates AT trujillomillanoscar assessingbodyweightasapredictorofvulnerabilityforextinctioninmarineinvertebrates
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Assessing body weight as a predictor of vulnerability for extinction in marine invertebrates

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