Growth, productivity, and relative extinction risk of a data-sparse devil ray
Devil rays (Mobula spp.) face intensifying fishing pressure to meet the ongoing international demand for gill plates. The paucity of information on growth, mortality, and fishing effort for devil rays make quantifying population growth rates and extinction risk challenging. Furthermore, unlike manta rays (Manta spp.), devil rays have not been listed on CITES. Here, we use a published size-at-age dataset for the Spinetail Devil Ray (Mobula japanica), to estimate somatic growth rates, age at maturity, maximum age, and natural and fishing mortality. We then estimate a plausible distribution of the maximum intrinsic population growth rate (rmax) and compare it to 95 other chondrichthyans. We find evidence that larger devil ray species have low somatic growth rate, low annual reproductive output, and low maximum population growth rates, suggesting they have low productivity. Fishing rates of a small-scale artisanal Mexican fishery were comparable to our estimate of rmax, and therefore probably unsustainable. Devil ray rmax is very similar to that of manta rays, indicating devil rays can potentially be driven to local extinction at low levels of fishing mortality and that a similar degree of protection for both groups is warranted.
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Format: | Texto biblioteca |
Language: | eng |
Subjects: | Mobula japanica, Dinámica de la población, Reproducción de peces, Especies en peligro de extinción, Pesca artesanal, |
Online Access: | http://www.nature.com/articles/srep33745 |
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KOHA-OAI-ECOSUR:581292024-03-12T12:56:41ZGrowth, productivity, and relative extinction risk of a data-sparse devil ray Pardo, Sebastián A. autor/a Kindsvater, Holly K. autor/a Cuevas Zimbrón, Elizabeth Maestra autor/a 12950 Sosa Nishizaki, Óscar autor/a 13493 Pérez Jiménez, Juan Carlos Doctor autor/a 12473 Dulvy, Nicholas K. autor/a textengDevil rays (Mobula spp.) face intensifying fishing pressure to meet the ongoing international demand for gill plates. The paucity of information on growth, mortality, and fishing effort for devil rays make quantifying population growth rates and extinction risk challenging. Furthermore, unlike manta rays (Manta spp.), devil rays have not been listed on CITES. Here, we use a published size-at-age dataset for the Spinetail Devil Ray (Mobula japanica), to estimate somatic growth rates, age at maturity, maximum age, and natural and fishing mortality. We then estimate a plausible distribution of the maximum intrinsic population growth rate (rmax) and compare it to 95 other chondrichthyans. We find evidence that larger devil ray species have low somatic growth rate, low annual reproductive output, and low maximum population growth rates, suggesting they have low productivity. Fishing rates of a small-scale artisanal Mexican fishery were comparable to our estimate of rmax, and therefore probably unsustainable. Devil ray rmax is very similar to that of manta rays, indicating devil rays can potentially be driven to local extinction at low levels of fishing mortality and that a similar degree of protection for both groups is warranted.Devil rays (Mobula spp.) face intensifying fishing pressure to meet the ongoing international demand for gill plates. The paucity of information on growth, mortality, and fishing effort for devil rays make quantifying population growth rates and extinction risk challenging. Furthermore, unlike manta rays (Manta spp.), devil rays have not been listed on CITES. Here, we use a published size-at-age dataset for the Spinetail Devil Ray (Mobula japanica), to estimate somatic growth rates, age at maturity, maximum age, and natural and fishing mortality. We then estimate a plausible distribution of the maximum intrinsic population growth rate (rmax) and compare it to 95 other chondrichthyans. We find evidence that larger devil ray species have low somatic growth rate, low annual reproductive output, and low maximum population growth rates, suggesting they have low productivity. Fishing rates of a small-scale artisanal Mexican fishery were comparable to our estimate of rmax, and therefore probably unsustainable. Devil ray rmax is very similar to that of manta rays, indicating devil rays can potentially be driven to local extinction at low levels of fishing mortality and that a similar degree of protection for both groups is warranted.Adobe Acrobat profesional 6.0 o superiorMobula japanicaDinámica de la poblaciónReproducción de pecesEspecies en peligro de extinciónPesca artesanalDisponible en líneaScientific Reportshttp://www.nature.com/articles/srep33745Acceso en línea sin restricciones |
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Mobula japanica Dinámica de la población Reproducción de peces Especies en peligro de extinción Pesca artesanal Mobula japanica Dinámica de la población Reproducción de peces Especies en peligro de extinción Pesca artesanal |
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Mobula japanica Dinámica de la población Reproducción de peces Especies en peligro de extinción Pesca artesanal Mobula japanica Dinámica de la población Reproducción de peces Especies en peligro de extinción Pesca artesanal Pardo, Sebastián A. autor/a Kindsvater, Holly K. autor/a Cuevas Zimbrón, Elizabeth Maestra autor/a 12950 Sosa Nishizaki, Óscar autor/a 13493 Pérez Jiménez, Juan Carlos Doctor autor/a 12473 Dulvy, Nicholas K. autor/a Growth, productivity, and relative extinction risk of a data-sparse devil ray |
description |
Devil rays (Mobula spp.) face intensifying fishing pressure to meet the ongoing international demand for gill plates. The paucity of information on growth, mortality, and fishing effort for devil rays make quantifying population growth rates and extinction risk challenging. Furthermore, unlike manta rays (Manta spp.), devil rays have not been listed on CITES. Here, we use a published size-at-age dataset for the Spinetail Devil Ray (Mobula japanica), to estimate somatic growth rates, age at maturity, maximum age, and natural and fishing mortality. We then estimate a plausible distribution of the maximum intrinsic population growth rate (rmax) and compare it to 95 other chondrichthyans. We find evidence that larger devil ray species have low somatic growth rate, low annual reproductive output, and low maximum population growth rates, suggesting they have low productivity. Fishing rates of a small-scale artisanal Mexican fishery were comparable to our estimate of rmax, and therefore probably unsustainable. Devil ray rmax is very similar to that of manta rays, indicating devil rays can potentially be driven to local extinction at low levels of fishing mortality and that a similar degree of protection for both groups is warranted. |
format |
Texto |
topic_facet |
Mobula japanica Dinámica de la población Reproducción de peces Especies en peligro de extinción Pesca artesanal |
author |
Pardo, Sebastián A. autor/a Kindsvater, Holly K. autor/a Cuevas Zimbrón, Elizabeth Maestra autor/a 12950 Sosa Nishizaki, Óscar autor/a 13493 Pérez Jiménez, Juan Carlos Doctor autor/a 12473 Dulvy, Nicholas K. autor/a |
author_facet |
Pardo, Sebastián A. autor/a Kindsvater, Holly K. autor/a Cuevas Zimbrón, Elizabeth Maestra autor/a 12950 Sosa Nishizaki, Óscar autor/a 13493 Pérez Jiménez, Juan Carlos Doctor autor/a 12473 Dulvy, Nicholas K. autor/a |
author_sort |
Pardo, Sebastián A. autor/a |
title |
Growth, productivity, and relative extinction risk of a data-sparse devil ray |
title_short |
Growth, productivity, and relative extinction risk of a data-sparse devil ray |
title_full |
Growth, productivity, and relative extinction risk of a data-sparse devil ray |
title_fullStr |
Growth, productivity, and relative extinction risk of a data-sparse devil ray |
title_full_unstemmed |
Growth, productivity, and relative extinction risk of a data-sparse devil ray |
title_sort |
growth, productivity, and relative extinction risk of a data-sparse devil ray |
url |
http://www.nature.com/articles/srep33745 |
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