Feeding ecology of the deep-sea lanternshark Etmopterus pusillus (Elasmobranchii: Etmopteridae) in the northeast Atlantic
This study provides the first description of the feeding ecology of the smooth lanternshark Etmopterus pusillus based on stomach contents of specimens caught as bycatch in the Algarve (southern Portugal) with bottom trawling and bottom longline. The diet of E. pusillus consists mainly of fish (dry w...
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Consejo Superior de Investigaciones Científicas
2012
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Online Access: | https://scientiamarina.revistas.csic.es/index.php/scientiamarina/article/view/1343 https://doi.org/10.3989/scimar.03540.07B |
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Scientia Marina (E-Journal) |
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ftjscientiamarin |
language |
English |
topic |
deep-sea fisheries elasmobranch Etmopterus pusillus feeding ecology lanternshark pesquerías demersales elasmobranquios ecología alimentaria tiburón tollo lucero liso |
spellingShingle |
deep-sea fisheries elasmobranch Etmopterus pusillus feeding ecology lanternshark pesquerías demersales elasmobranquios ecología alimentaria tiburón tollo lucero liso Xavier, José C. Vieira, Cátia Assis, Carlos Cherel, Yves Hill, Simeon Costa, Esmeralda Borges, Teresa C. Coelho, Rui Feeding ecology of the deep-sea lanternshark Etmopterus pusillus (Elasmobranchii: Etmopteridae) in the northeast Atlantic |
topic_facet |
deep-sea fisheries elasmobranch Etmopterus pusillus feeding ecology lanternshark pesquerías demersales elasmobranquios ecología alimentaria tiburón tollo lucero liso |
description |
This study provides the first description of the feeding ecology of the smooth lanternshark Etmopterus pusillus based on stomach contents of specimens caught as bycatch in the Algarve (southern Portugal) with bottom trawling and bottom longline. The diet of E. pusillus consists mainly of fish (dry weight (% W)=87.1%; frequency of occurrence (%FO)=28.6%; number (%N)=30.3%), crustaceans (%W=7.7%; %FO=36.7%; %N=3.4%) and cephalopods (%W=4.7%; %FO=11.3%; %N=11.1%). The diet did not vary between sexes. Ontogenic changes were detected: crustaceans decreased in importance as the sharks increased in size and fish became dominant in the diet of adults. Combining two fishing methods provided broad information on the diet of E. pusillus, as bottom trawling caught smaller specimens and longlines caught larger individuals. E. pusillus feeds mainly on non-commercial species, and therefore does not compete directly with commercial fisheries. Finally, E. pusillus feeds in various parts of the water column and thus it can access a wide range of prey; however, this also means that it can be caught by both gears, making it more vulnerable in terms of conservation. Se proporciona la primera descripción de la ecología alimentaria del tiburón tollo lucero liso Etmopterus pusillus mediante el análisis de contenidos estomacales de individuos capturados accidentalmente en el Algarve (sur de Portugal) mediante arrastre y palangre de fondo. La dieta de E. pusillus consiste mayoritariamente en peces (%W=87.1%; %FO=28.6%; %N=30.3%), crustáceos (%W=7.7%; %FO=36.7%; %N=53.4%) y cefalópodos (%W=4.7%; %FO=11.3%; %N=11.1%; % W=peso seco, %FO=Frecuencia de aparición, %N=Número). No se observaron diferencias entre sexos en su dieta, pero sí cambios ontogénicos, con los crustáceos disminuyendo en importancia a medida que el tiburón alcanza tallas mayores, y los peces dominando la dieta de los adultos. Ambos tipos de pesquería proporcionaron información adecuada sobre la dieta de E. pusillus, con el arrastre capturando tallas menores, y el palangre capturando animales mayores. Al alimentarse mayoritariamente de especies sin interés comercial, este tiburón no compite activamente con ninguna pesquería para obtener recursos alimentarios. Finalmente, E. pusillus se alimenta en varios niveles de la columna del agua, lo que le aporta mayor diversidad de presas, aunque también significa que puede ser capturado por ambos artes de pesca, convirtiéndolo en más vulnerable en términos de conservación. |
format |
Article in Journal/Newspaper |
author |
Xavier, José C. Vieira, Cátia Assis, Carlos Cherel, Yves Hill, Simeon Costa, Esmeralda Borges, Teresa C. Coelho, Rui |
author_facet |
Xavier, José C. Vieira, Cátia Assis, Carlos Cherel, Yves Hill, Simeon Costa, Esmeralda Borges, Teresa C. Coelho, Rui |
author_sort |
Xavier, José C. |
title |
Feeding ecology of the deep-sea lanternshark Etmopterus pusillus (Elasmobranchii: Etmopteridae) in the northeast Atlantic |
title_short |
Feeding ecology of the deep-sea lanternshark Etmopterus pusillus (Elasmobranchii: Etmopteridae) in the northeast Atlantic |
title_full |
Feeding ecology of the deep-sea lanternshark Etmopterus pusillus (Elasmobranchii: Etmopteridae) in the northeast Atlantic |
title_fullStr |
Feeding ecology of the deep-sea lanternshark Etmopterus pusillus (Elasmobranchii: Etmopteridae) in the northeast Atlantic |
title_full_unstemmed |
Feeding ecology of the deep-sea lanternshark Etmopterus pusillus (Elasmobranchii: Etmopteridae) in the northeast Atlantic |
title_sort |
feeding ecology of the deep-sea lanternshark etmopterus pusillus (elasmobranchii: etmopteridae) in the northeast atlantic |
publisher |
Consejo Superior de Investigaciones Científicas |
publishDate |
2012 |
url |
https://scientiamarina.revistas.csic.es/index.php/scientiamarina/article/view/1343 https://doi.org/10.3989/scimar.03540.07B |
long_lat |
ENVELOPE(-66.867,-66.867,-68.167,-68.167) |
geographic |
Nordeste |
geographic_facet |
Nordeste |
genre |
Northeast Atlantic |
genre_facet |
Northeast Atlantic |
op_source |
Scientia Marina; Vol. 76 No. 2 (2012); 301-310 Scientia Marina; Vol. 76 Núm. 2 (2012); 301-310 1886-8134 0214-8358 10.3989/scimar.2012.76n2 |
op_relation |
https://scientiamarina.revistas.csic.es/index.php/scientiamarina/article/view/1343/1434 Alvarez R.Z. 1968. Crustáceos Decápodos Ibéricos. Consejo Superior de Investigaciones Científicas, Barcelona, 510 pp. Assis C.A. 2000. Estudo Morfológico dos Otólitos Sagitta, Asteriscus e Lapillus de Teleósteos (Actinopterygii, Teleostei) de Portugal Continental – Sua Aplicação em Estudos de Filogenia, Sistemática e Ecologia. Ph.D. thesis, Univ. Lisboa, 991 pp Blaber S.J.M., Bulman C.M. 1987. Diets of fishes of the upper continental slope of eastern Tasmânia: content, calorific values, dietary overlap and trophic relationships. Mar. Biol. 95: 345-356. http://dx.doi.org/10.1007/BF00409564 Borges T.C., Erzini K., Bentes L., Costa M.E., Gonçalves J.M.S., Lino P.G., Pais C., Ribeiro J. 2001. By-catch and discarding practices in five Algarve (southern Portugal) métiers. J. Appl. Ichthyol. 17: 101-114. Braccini J.M., Gillanders B.M., Walker T.I. 2005. Sources of variation in the feeding ecology of the piked spurdog (Squalus megalops): implications for inferring predator-prey interactions from overall dietary composition. ICES J. Mar. Sci. 62: 1076-1094. Cabral H.N., Murta A.G. 2002. The diet of blue whiting, hake, horse mackerel and mackerel off Portugal. J. Appl. Ichthyol. 18: 14-23. http://dx.doi.org/10.1046/j.1439-0426.2002.00297.x Clarke M.R. 1986. A handbook for the identification of cephalopod beaks. Clarendon Press, Oxford, 273 pp. Clarke K.R., Warwick R.M. 2001. Change in Marine Communities: An Approach to Statistical Analysis and Interpretation, 2nd Edition. Natural Environment Research Council, Plymouth, 160 pp. Coelho R., Erzini K. 2005. Length at first maturity of two species of lantern sharks (Etmopterus spinax and Etmopterus pusillus) of southern Portugal. J. Mar. Biol. Ass. U.K. 85: 1163-1165. http://dx.doi.org/10.1017/S0025315405012245 Coelho R., Erzini K. 2007. Population parameters of the smooth lantern shark, Etmopterus pusillus, in Southern Portugal (NE Atlantic). Fish. Res. 86: 42-57. http://dx.doi.org/10.1016/j.fishres.2007.04.006 Coelho R., Erzini K. 2008a. Identification of deep water lantern sharks (Chondrichthyes: Etmopteridae) using morphometric data and multivariate analysis. J. Mar. Biol. Ass. U.K. 88: 199-204. http://dx.doi.org/10.1017/S0025315408000271 Coelho R., Erzini K. 2008b. Effects of fishing methods on deep water shark species caught as by-catch off southern Portugal. Hydrobiologia 606: 187-193. http://dx.doi.org/10.1007/s10750-008-9335-y Coelho R., Bentes L., Gonçalves J.M.S., Lino P.G., Ribeiro J., Erzini K. 2003. Reduction of elasmobranch by-catch in the hake semi-pelagic near bottom longline fishery in the Algarve (Southern Portugal). Fish. Sci. 69: 293-299. http://dx.doi.org/10.1046/j.1444-2906.2003.00620.x Coelho R., Erzini K., Bentes L., Correia C., Lino P.G., Monteiro P., Ribeiro J., Gonçalves J.M.S. 2005. Semipelagic longline and trammel net elasmobranch catches in southern Portugal: catch composition, catch rates and discards. J. Northwest. Atl. Fish. Sci. 35: 531-537. http://dx.doi.org/10.2960/J.v35.m482 Cortés E., Gruber S.H. 1990. Diet, feeding habits and estimates of daily ration of young lemon sharks (Negaprion brevirostris). Copeia 1990: 204-218. http://dx.doi.org/10.2307/1445836 Cortés E. 1997. A critical review of methods of studying fish feeding based on analysis of stomach contents: application to elasmobranch fishes. Can. J. Fish. Aquat. Sci. 54: 726-738. http://dx.doi.org/10.1139/cjfas-54-3-726 Cortés E. 1999. Standardized diet compositions and trophic levels of sharks. ICES J. Mar. Sci. 56: 707-717. http://dx.doi.org/10.1006/jmsc.1999.0489 Cotton C., Dyb D.E., Fossen I. 2005. Bottom-living top predators of the deep Atlantic: the sharks, skates, rays. World Wide Web Electronic publication. www.mar-eco.no. FAO. 2006. Universal software for fishery statistical time series. Catches and landings 2006. FAO Fisheries Department, Fishery Information, Data and Statistics Unit, Rome. Gibson C., Valenti S., Fordham S., Fowler S.L. 2008. The Conservation of Northeast Atlantic Chondrichthyans: Report of the IUCN Shark Specialist Group Northeast Atlantic Red List Workshop. IUCN Species Survival Commission, Shark Specialist Group, Newbury, 76 pp. Hanchet, S. 1991. Diet of spiny dogfish, Squalus acanthias Linnaeus, on the east coast, South Island, New Zealand. J. Fish Biol. 39: 313-323 http://dx.doi.org/10.1111/j.1095-8649.1991.tb04365.x Hantz M. 2003. Sharks - Rulers Of The Deep. Science Screen Report, Vol. 33: 1-2. Hayward R.S., Margraf F.J., Knigth C.T., Glomski D.J. 1989. Gear bias in field estimation of the amount of food consumed by fish. Can. J. Fish. Aquat. Sci. 46: 874-876. http://dx.doi.org/10.1139/f89-111 Heithaus M.R., Frid A., Wirsing A.J., Worm B. 2008. Predicting ecological consequences of marine top predator declines. Trends Ecol. 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ftjscientiamarin:oai:scientiamarina.revistas.csic.es:article/1343 2023-05-15T17:41:47+02:00 Feeding ecology of the deep-sea lanternshark Etmopterus pusillus (Elasmobranchii: Etmopteridae) in the northeast Atlantic Ecología alimentaria del tiburón tollo lucero liso Etmopterus pusillus (Elasmobranchii: Etmopteridae) en el Atlántico Nordeste Xavier, José C. Vieira, Cátia Assis, Carlos Cherel, Yves Hill, Simeon Costa, Esmeralda Borges, Teresa C. Coelho, Rui 2012-06-30 application/pdf https://scientiamarina.revistas.csic.es/index.php/scientiamarina/article/view/1343 https://doi.org/10.3989/scimar.03540.07B eng eng Consejo Superior de Investigaciones Científicas https://scientiamarina.revistas.csic.es/index.php/scientiamarina/article/view/1343/1434 Alvarez R.Z. 1968. Crustáceos Decápodos Ibéricos. Consejo Superior de Investigaciones Científicas, Barcelona, 510 pp. Assis C.A. 2000. Estudo Morfológico dos Otólitos Sagitta, Asteriscus e Lapillus de Teleósteos (Actinopterygii, Teleostei) de Portugal Continental – Sua Aplicação em Estudos de Filogenia, Sistemática e Ecologia. Ph.D. thesis, Univ. Lisboa, 991 pp Blaber S.J.M., Bulman C.M. 1987. Diets of fishes of the upper continental slope of eastern Tasmânia: content, calorific values, dietary overlap and trophic relationships. Mar. Biol. 95: 345-356. http://dx.doi.org/10.1007/BF00409564 Borges T.C., Erzini K., Bentes L., Costa M.E., Gonçalves J.M.S., Lino P.G., Pais C., Ribeiro J. 2001. By-catch and discarding practices in five Algarve (southern Portugal) métiers. J. Appl. Ichthyol. 17: 101-114. Braccini J.M., Gillanders B.M., Walker T.I. 2005. Sources of variation in the feeding ecology of the piked spurdog (Squalus megalops): implications for inferring predator-prey interactions from overall dietary composition. ICES J. Mar. Sci. 62: 1076-1094. Cabral H.N., Murta A.G. 2002. The diet of blue whiting, hake, horse mackerel and mackerel off Portugal. J. Appl. Ichthyol. 18: 14-23. http://dx.doi.org/10.1046/j.1439-0426.2002.00297.x Clarke M.R. 1986. A handbook for the identification of cephalopod beaks. Clarendon Press, Oxford, 273 pp. Clarke K.R., Warwick R.M. 2001. Change in Marine Communities: An Approach to Statistical Analysis and Interpretation, 2nd Edition. Natural Environment Research Council, Plymouth, 160 pp. Coelho R., Erzini K. 2005. Length at first maturity of two species of lantern sharks (Etmopterus spinax and Etmopterus pusillus) of southern Portugal. J. Mar. Biol. Ass. U.K. 85: 1163-1165. http://dx.doi.org/10.1017/S0025315405012245 Coelho R., Erzini K. 2007. Population parameters of the smooth lantern shark, Etmopterus pusillus, in Southern Portugal (NE Atlantic). Fish. Res. 86: 42-57. http://dx.doi.org/10.1016/j.fishres.2007.04.006 Coelho R., Erzini K. 2008a. Identification of deep water lantern sharks (Chondrichthyes: Etmopteridae) using morphometric data and multivariate analysis. J. Mar. Biol. Ass. U.K. 88: 199-204. http://dx.doi.org/10.1017/S0025315408000271 Coelho R., Erzini K. 2008b. Effects of fishing methods on deep water shark species caught as by-catch off southern Portugal. Hydrobiologia 606: 187-193. http://dx.doi.org/10.1007/s10750-008-9335-y Coelho R., Bentes L., Gonçalves J.M.S., Lino P.G., Ribeiro J., Erzini K. 2003. Reduction of elasmobranch by-catch in the hake semi-pelagic near bottom longline fishery in the Algarve (Southern Portugal). Fish. Sci. 69: 293-299. http://dx.doi.org/10.1046/j.1444-2906.2003.00620.x Coelho R., Erzini K., Bentes L., Correia C., Lino P.G., Monteiro P., Ribeiro J., Gonçalves J.M.S. 2005. Semipelagic longline and trammel net elasmobranch catches in southern Portugal: catch composition, catch rates and discards. J. Northwest. Atl. Fish. Sci. 35: 531-537. http://dx.doi.org/10.2960/J.v35.m482 Cortés E., Gruber S.H. 1990. Diet, feeding habits and estimates of daily ration of young lemon sharks (Negaprion brevirostris). Copeia 1990: 204-218. http://dx.doi.org/10.2307/1445836 Cortés E. 1997. A critical review of methods of studying fish feeding based on analysis of stomach contents: application to elasmobranch fishes. Can. J. Fish. Aquat. Sci. 54: 726-738. http://dx.doi.org/10.1139/cjfas-54-3-726 Cortés E. 1999. Standardized diet compositions and trophic levels of sharks. ICES J. Mar. Sci. 56: 707-717. http://dx.doi.org/10.1006/jmsc.1999.0489 Cotton C., Dyb D.E., Fossen I. 2005. Bottom-living top predators of the deep Atlantic: the sharks, skates, rays. World Wide Web Electronic publication. www.mar-eco.no. FAO. 2006. Universal software for fishery statistical time series. Catches and landings 2006. FAO Fisheries Department, Fishery Information, Data and Statistics Unit, Rome. Gibson C., Valenti S., Fordham S., Fowler S.L. 2008. The Conservation of Northeast Atlantic Chondrichthyans: Report of the IUCN Shark Specialist Group Northeast Atlantic Red List Workshop. IUCN Species Survival Commission, Shark Specialist Group, Newbury, 76 pp. Hanchet, S. 1991. Diet of spiny dogfish, Squalus acanthias Linnaeus, on the east coast, South Island, New Zealand. J. Fish Biol. 39: 313-323 http://dx.doi.org/10.1111/j.1095-8649.1991.tb04365.x Hantz M. 2003. Sharks - Rulers Of The Deep. Science Screen Report, Vol. 33: 1-2. Hayward R.S., Margraf F.J., Knigth C.T., Glomski D.J. 1989. Gear bias in field estimation of the amount of food consumed by fish. Can. J. Fish. Aquat. Sci. 46: 874-876. http://dx.doi.org/10.1139/f89-111 Heithaus M.R., Frid A., Wirsing A.J., Worm B. 2008. Predicting ecological consequences of marine top predator declines. Trends Ecol. Evol. 23: 202-210. http://dx.doi.org/10.1016/j.tree.2008.01.003 Hureau J.C. 1970. Biologie comparée de quelques poissons antarctiques. Bull. Inst. Oceanogr. Monaco 68: 1-244. Karpouzi V.S., Stergiou K.I. 2003. The relationships between mouth size and shape and body length for 18 species of marine fishes and their trophic implications. J. Fish. Biol. 62: 1353-1365. http://dx.doi.org/10.1046/j.1095-8649.2003.00118.x Lehodey P., Maury O. 2003. Global Ocean Ecosystem Dynamics: a core project of the International Geosphere-biosphere Programme. France. Mauchline J., Gordon J.D.M. 1991. Oceanic pelagic prey of benthopelagic fish in the benthic boundary layer of a marginal oceanic region. Mar. Ecol. Prog. Ser. 74: 109-115. http://dx.doi.org/10.3354/meps074109 Monteiro P., Araujo A., Erzini K., Castro M. 2001. Discards of the Algarve (southern Portugal) crustacean trawl fishery. Hydrobiologia 449: 267-277. http://dx.doi.org/10.1023/A:1017575429808 Moore J.A., Mace P.M. 1999. Challenges and prospects for deep-sea finfish fisheries. Fisheries 24: 22-23. 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Copyright (c) 2012 Consejo Superior de Investigaciones Científicas (CSIC) https://creativecommons.org/licenses/by/4.0 CC-BY Scientia Marina; Vol. 76 No. 2 (2012); 301-310 Scientia Marina; Vol. 76 Núm. 2 (2012); 301-310 1886-8134 0214-8358 10.3989/scimar.2012.76n2 deep-sea fisheries elasmobranch Etmopterus pusillus feeding ecology lanternshark pesquerías demersales elasmobranquios ecología alimentaria tiburón tollo lucero liso info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed article Artículo revisado por pares 2012 ftjscientiamarin https://doi.org/10.3989/scimar.03540.07B https://doi.org/10.3989/scimar.2012.76n2 https://doi.org/10.1007/BF00409564 https://doi.org/10.1046/j.1439-0426.2002.00297.x https://doi.org/10.1017/S0025315405012245 https://doi.org/10.1016/j.fishres.200 2022-03-20T16:31:16Z This study provides the first description of the feeding ecology of the smooth lanternshark Etmopterus pusillus based on stomach contents of specimens caught as bycatch in the Algarve (southern Portugal) with bottom trawling and bottom longline. The diet of E. pusillus consists mainly of fish (dry weight (% W)=87.1%; frequency of occurrence (%FO)=28.6%; number (%N)=30.3%), crustaceans (%W=7.7%; %FO=36.7%; %N=3.4%) and cephalopods (%W=4.7%; %FO=11.3%; %N=11.1%). The diet did not vary between sexes. Ontogenic changes were detected: crustaceans decreased in importance as the sharks increased in size and fish became dominant in the diet of adults. Combining two fishing methods provided broad information on the diet of E. pusillus, as bottom trawling caught smaller specimens and longlines caught larger individuals. E. pusillus feeds mainly on non-commercial species, and therefore does not compete directly with commercial fisheries. Finally, E. pusillus feeds in various parts of the water column and thus it can access a wide range of prey; however, this also means that it can be caught by both gears, making it more vulnerable in terms of conservation. Se proporciona la primera descripción de la ecología alimentaria del tiburón tollo lucero liso Etmopterus pusillus mediante el análisis de contenidos estomacales de individuos capturados accidentalmente en el Algarve (sur de Portugal) mediante arrastre y palangre de fondo. La dieta de E. pusillus consiste mayoritariamente en peces (%W=87.1%; %FO=28.6%; %N=30.3%), crustáceos (%W=7.7%; %FO=36.7%; %N=53.4%) y cefalópodos (%W=4.7%; %FO=11.3%; %N=11.1%; % W=peso seco, %FO=Frecuencia de aparición, %N=Número). No se observaron diferencias entre sexos en su dieta, pero sí cambios ontogénicos, con los crustáceos disminuyendo en importancia a medida que el tiburón alcanza tallas mayores, y los peces dominando la dieta de los adultos. Ambos tipos de pesquería proporcionaron información adecuada sobre la dieta de E. pusillus, con el arrastre capturando tallas menores, y el palangre capturando animales mayores. Al alimentarse mayoritariamente de especies sin interés comercial, este tiburón no compite activamente con ninguna pesquería para obtener recursos alimentarios. Finalmente, E. pusillus se alimenta en varios niveles de la columna del agua, lo que le aporta mayor diversidad de presas, aunque también significa que puede ser capturado por ambos artes de pesca, convirtiéndolo en más vulnerable en términos de conservación. Article in Journal/Newspaper Northeast Atlantic Scientia Marina (E-Journal) Nordeste ENVELOPE(-66.867,-66.867,-68.167,-68.167) Scientia Marina 76 2 301 310 |