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Feeding ecology of the shortfin mako shark, Isurus oxyrinchus, in the Ecuadorian Pacific Ocean

Published online by Cambridge University Press:  21 December 2023

Marcos D. Calle-Morán Open the ORCID record for Marcos D. Calle-Morán [Opens in a new window] ,
Héctor M. Erazo-Garcés ,
Ana R. Hernández-Téllez Open the ORCID record for Ana R. Hernández-Téllez [Opens in a new window] ,
Felipe Galván-Magaña Open the ORCID record for Felipe Galván-Magaña [Opens in a new window]  and
Colombo Estupiñán-Montaño Open the ORCID record for Colombo Estupiñán-Montaño [Opens in a new window]
Marcos D. Calle-Morán
Affiliation:
Facultad de Ciencias del Mar, Programa de Doctorado en Ciencias con mención en Recursos Acuáticos, Universidad Autónoma de Sinaloa, Mazatlán, Sinaloa, México Carrera de Biología, Facultad de Ciencias de la Vida, Universidad Estatal Amazónica, El Pangui, Zamora Chinchipe, Ecuador
Héctor M. Erazo-Garcés
Affiliation:
Facultad de Ciencias Naturales, Escuela de Biología, Universidad de Guayaquil, Guayaquil, Guayas, Ecuador
Ana R. Hernández-Téllez
Affiliation:
Facultad de Ciencias del Mar, Programa de Doctorado en Ciencias con mención en Recursos Acuáticos, Universidad Autónoma de Sinaloa, Mazatlán, Sinaloa, México
Felipe Galván-Magaña
Affiliation:
Instituto Politécnico Nacional. Centro Interdisciplinario de Ciencias Marinas, La Paz, Baja California Sur, México
Colombo Estupiñán-Montaño*
Affiliation:
Fundación Alium Pacific, Santiago de Cali, Valle del Cauca, Colombia
*
Corresponding author: Colombo Estupiñán-Montaño; Email: goliathcem@gmail.com
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Abstract

Shortfin mako shark, Isurus oxyrinchus, is listed as an endangered species with declining global population. Thus, studies regarding its biology and ecology are important to recommend fishery management and conservation measures. This study aimed to determine the diet composition and feeding habits of I. oxyrinchus in Ecuadorian waters. Samples were obtained from Santa Rosa fishing port (Ecuador). The total length (LT), sex and sexual characteristics were recorded, and stomach contents were collected. A total of 142 individuals were recorded, comprising 81 females (104–295 cm LT) and 61 males (127–245 cm LT). A total of 24 prey species were identified, including crustaceans, cephalopods, teleosts and cetaceans. According to the Prey-Specific Index of Relative Importance (PSIRI), the main prey taxa were the ommastrephid squid, Dosidicus gigas (42.57%) and Sthenoteuthis oualaniensis (21.04%), followed by fish from the family Hemiramphidae (11.85%). Isurus oxyrinchus is a specialist predator that preferred a low number of prey (Bi = 0.25), both by sex (Bi; females = 0.29 and males = 0.34) and life stages (Bi; juveniles = 0.27 and adults = 0.37). The trophic overlap was medium for sexes (J = 0.54) and biological cycle phases (J = 0.42). Trophic level (TLk) was 4.47, indicating that I. oxyrinchus is a tertiary predator. This information will help in fisheries management based on an ecosystem approach, where this species fulfils an ecological role, and its interactions with other species allow us to understand how the flow of nutrients and energy occurs within an ecosystem.

Keywords

diet overlappingfeeding habitstop predatortrophic ecologytrophic leveltrophic niche width
Type
Research Article
Information
Journal of the Marine Biological Association of the United Kingdom , Volume 103 , 2023 , e96
Copyright
Copyright © The Author(s), 2023. Published by Cambridge University Press on behalf of Marine Biological Association of the United Kingdom

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References

Abascal, FJ, Quintans, M, Ramos-Cartelle, A and Mejuto, J (2011) Movements and environmental preferences of the shortfin mako, Isurus oxyrinchus, in the Southeastern Pacific Ocean. Marine Biology 158, 1175–1184.Google Scholar
Allan, JD and Castillo, MM (2007) Stream Ecology: Structure and Function of Running Waters, 2nd Edn. New York: Springer.Google Scholar
Applegate, SP (1966) A possible record-sized bonito shark, Isurus oxyrinchus Rafinesque, from southern California. California and Fish and Game 52, 204–207.Google Scholar
Bass, AJ, D'Aubrey, DD and Kistnasamy, N (1975) Sharks of the east coast of southern Africa. IV. The families Odontaspididae, Scapanorhynchidae, Isuridae, Cetorhinidae, Alopiidae, Orectolobidae and Rhincodontidae. Oceanographic Research Institute 39, 1–102.Google Scholar
Biton-Porsmoguer, S, Bănaru, D, Boudouresque, CF, Dekeyser, I, Béarez, P and Miguez-Lozano, R (2017) Compared diet of two pelagic shark species in the Northeastern Atlantic Ocean. Vie et Milieu 67, 21–25.Google Scholar
Biton-Porsmoguer, S, Banaru, D, Boudouresque, CF, Dekeyser, I, Viricel, A and Merchán, M (2015) DNA evidence of the consumption of short-beaked common dolphin, Delphinus delphis, by the shortfin mako shark, Isurus oxyrinchus. Marine Ecology Progress Series 532, 177–183.Google Scholar
Bornatowski, H, Navia, AF, Braga, AA, Albilhoa, V and Corrêa, MFM (2014) Ecological importance of sharks and rays in a structural foodweb analysis in southern Brazil. ICES Journal of Marine Science 71, 1586–1593.CrossRefGoogle Scholar
Bress, M (1993) The behavior of sharks. Reviews in Fish Biology and Fisheries 3, 133–159.Google Scholar
Brown, SC, Bizzarro, JJ, Cailliet, GM and Ebert, DA (2011) Breaking with tradition: redefining measures for diet description with a case study of the Aleutian skate, Bathyraja aleutica (Gilbert, 1896). Environmental Biology of Fishes 95, 3–20.Google Scholar
Camhi, M, Fowler, S, Musick, J, Bräutigam, A and Fordham, S (1998) Sharks and their relatives: ecology and conservation. Occasional Paper of the IUCN Species Survival Commission Occas. Pap. No. 20. IUCN, Oxford.Google Scholar
Celis-De la Rosa, AJ and Labrada-Martagón, V (2014) Bioestadística, 3rd Edn. Ciudad de México: El Manual Moderno.Google Scholar
Cervigón, F (1994) Los Peces Marinos de Venezuela. Vol. 3. Caracas: Fundación Científica Los Roques.Google Scholar
Clark, E and Von Schmidt, K (1965) Sharks of the Central Gulf Coast of Florida. Bulletin of Marine Science 15, 13–83.Google Scholar
Clarke, M (1986) A Handbook for the Identification of Cephalopod Beaks. Oxford: Clarendon Press.Google Scholar
Clothier, C (1950) A key to some southern California fishes based on vertebral characters. Fishery Bulletin no. 79. Bureau of Marine Fisheries, California.Google Scholar
Clothier, C and Baxter, J (1969) Vertebral Characters of Some Californian Fishes with Notes on Other Eastern Pacific Species. California: The Resources Agency.Google Scholar
Coello, D and Herrera, M (2018) Desembarques de tiburones en las pesquerías artesanales del Ecuador durante el 2012. Revista Científica de Ciencias Naturales y Ambientales 12, 1–8.Google Scholar
Colwell, RK (2019) Statistical estimation of species richness and shared species from samples EstimateS V. 9.1.0 University of Connecticut, Storrs. Available at http://viceroy.eeb.uconn.edu/estimates/Google Scholar
Compagno, LJV (2001) FAO species catalogue for fisheries purposes. Sharks of the World. An annotated and illustrated catalogue of the shark species known to date. Part 1. Volume 2. Bullhead, mackerel and carpet sharks (Heterodontiformes, Lamniformes and Orectolobiformes). FAO, Rome, Italy.Google Scholar
Compagno, LJV, Dando, M and Fowler, SL (2005) A Field Guide to the Sharks of the World. London: Collins.Google Scholar
Conde-Moreno, M and Galván-Magaña, F (2006) Reproductive biology of the mako shark, Isurus oxyrinchus, on the south-western coast of Baja California, Mexico. Cybium 30, 75–83.Google Scholar
Cortés, E (1999) Standardized diet composition and trophic level in sharks. ICES Journal of Marine Science 56, 707–717.Google Scholar
Cortés, E (2000) Life history patterns and correlations in sharks. Reviews in Fisheries Science 8, 299–344.Google Scholar
Costa, FES, Braga, FMS, Arfelli, CA and Andamorim, AF (2002) Aspects of the reproductive biology of the shortfin mako, Isurus oxyrinchus (Elasmobranchii: Lamnidae), in the southeastern region of Brazil. Brazilian Journal of Biology 62, 239–248.Google Scholar
Daniel, WW (1991) Bioestadística, base para el análisis de las Ciencias de la Salud, 4th Edn. Ciudad de México: Editorial Limusa.Google Scholar
Estrada, JA, Rice, AN, Lutcavage, ME and Skomal, GB (2003) Predicting trophic position in sharks of the north-west Atlantic Ocean using stable isotope analysis. Journal of Marine Biological Association United Kingdom 83, 1347–1350.Google Scholar
Estupiñán-Montaño, C and Delgado-Huertas, A (2022) Longfin mako shark, Isurus paucus, in the Eastern Tropical Pacific: first evidence of trophic ontogeny based on the isotopic analysis of long-term tissues. Thalassas: An International Journal of Marine Sciences 38, 49–55.Google Scholar
Estupiñán-Montaño, C, Galván-Magaña, F, Elorriaga-Verplancken, F, Zetina-Rejón, MJ, Sánchez-González, A, Polo-Silva, CJ, Villalobos-Ramírez, DJ, Rojas-Cundumí, J and Delgado-Huertas, A (2021a) Ontogenetic feeding ecology of the scalloped hammerhead shark, Sphyrna lewini, in the Colombian eastern tropical Pacific. Marine Ecology Progress Series 663, 127–143.Google Scholar
Estupiñán-Montaño, C, Tamburin, E and Delgado-Huertas, A (2021b) New insights into the trophic ecology of the scalloped hammerhead shark, Sphyrna lewini, in the eastern tropical Pacific Ocean. Environmental Biology of Fishes 104, 1611–1627.Google Scholar
FAO (2022) Isurus Oxyrinchus Rafinesque, 1809. Fisheries and Aquaculture Division. Rome. Available at https://www.fao.org/fishery/en/aqspecies/2011/en (accessed 3 September 2022).Google Scholar
FAO-FIGIS (2005) A world overview of species of interest to fisheries. Chapter: Pomatomus saltratix. Available at www.fao.org/figis/servlet/species?fid=3102 (accessed 13 March 2020).Google Scholar
Field, J, Baltz, K, Philips, J and Walker, W (2007) Range expansion and trophic interactions of the jumbo squid, Dosidicus gigas, in the California Current. California Cooperative Oceanic Fisheries Investigations Reports 48, 131–146.Google Scholar
Fischer, W, Krupp, F, Schneider, W, Sommer, C, Carpenter, K and Niem, V (1995) Guía FAO Para la Identificación de Especies Para los Fines de la Pesca. Pacífico Centro Oriental. Vols. I, II and III. Rome, Italy: FAO.Google Scholar
Froese, R and Pauly, D (2022) FishBase. Available at www.fishbase.org (accessed online 15 April 2022).Google Scholar
García-Godos, I (2001) Patrones Morfológicos del Otolito Sagitta de Algunos Peces óseos del mar Peruano. Vol. 20. Callao, Perú: Instituto del Mar de Perú (IMARPE).Google Scholar
Gibson, KJ, Streich, MK, Topping, TS and Stunz G, W (2021) New insights into the seasonal movement patterns of shortfin mako sharks in the Gulf of Mexico. Frontiers in Marine Science 8, 623105.CrossRefGoogle Scholar
Gorni, GR, Goitein, R and Amorim, AF (2013) Description of diet of pelagic fish in the southwestern Atlantic, Brazil. Biota Neotropica 13, 61–69.Google Scholar
Gorni, GR, Loibel, S, Goitein, R and Amorim, AF (2012) Stomach contents analysis of shortfin mako (Isurus oxyrinchus) caught off southern Brazil: a Bayesian analysis. Collective Volume of Science Papers ICCAT 68, 1933–1937.Google Scholar
Groeneveld, JC, Cliff, G, Dudley, SFJ, Foulis, AJ, Santos, J and Wintner, SP (2014) Population structure and biology of shortfin mako, Isurus oxyrinchus, in the south-west Indian Ocean. Marine and Freshwater Research 65, 1045–1058.Google Scholar
Hammer, O (2020) Paleontological Statistics, PAST, Version 4.01. Oslo: University of Oslo.Google Scholar
Hendrickx, ME (1995) Camarones. In Fischer, W, Krupp, F, Schneider, W, Sommer, C, Carpenter, K and Niem, V (eds) Guía FAO para la identificación de especies para los fines de la pesca. Pacífico Centro Oriental. Vol. 1. Plantas e invertebrados. Roma, Italy: FAO, pp. 417–538.Google Scholar
Hoffman, M (1979) The use of Pielou's method to determine sample size in food studies. In Lipovsky, SJ and Simenstad, CA (eds), Fish Food Habits Studies. Proceeding of the second Pacific Northwest Technical Workshop. Seattle, USA: University of Washington, pp. 56–61.Google Scholar
Holden, MJ and Raitt, DFS (1975) Manual de Ciencia Pesquera, parte 2, métodos para investigar los recursos y su aplicación. Roma, Italy: FAO.Google Scholar
Hussey, NE, McCann, HM, Cliff, G, Dudley, SFJ, Wintner, SP and Fisk, AT (2012) Size-based analysis diet and trophic position of the white shark (Carcharodon carcharias) in South African Waters. In Domeier, ML (ed.), Global Perspectives on the Biology and Life History of the White Shark. Boca Raton, FL, USA: CRC Press Taylor & Francis Group, pp. 27–49.Google Scholar
Hyslop, E (1980) Stomach contents analysis, a review of methods and their application. Journal of Fish Biology 17, 411–429.Google Scholar
Ingrid, L, Iverson, K and Pinkas, L (1971) A pictorial guide to beaks of certain Eastern Pacific cephalopods. Fishery Bulletin 152, 7–35.Google Scholar
Jefferson, TA and Leatherwood, S (1995) Mamíferos marinos. In Fischer, W, Krupp, F, Schneider, W, Sommer, C, Carpenter, K and Niem, V (eds), Guía FAO para la identificación de especies para los fines de la pesca. Pacífico centro oriental. Vol. 3. Vertebrados. Parte 2. Roma, Italy: FAO, pp. 1665–1745.Google Scholar
Jereb, P and Roper, CFE (2010) FAO species catalogue for fishery purposes. Cephalopods of the world. An annotated and illustrated catalogue of cephalopod species known to date. Myopsid and Oegopsid Squids. No. 4. Volume 2. FAO, Rome, Italy.Google Scholar
Jereb, P, Roper, CFE, Norman, MD and Finn, JK (2014) FAO species catalogue for fishery purposes. Cephalopods of the world. An annotated and illustrated catalogue of cephalopod species known to date. No. 4. Volume 3. Octopods and Vampire Squids. FAO, Rome, Italy.Google Scholar
Jiménez, P and Béarez, P (2004) Peces marinos del Ecuador continental. Tomo 2. SIMBIOE/NAZCA/IFEA, Quito, Ecuador.Google Scholar
Joung, SJ and Hsu, HH (2005) Reproduction and embryonic development of the shortfin mako, Isurus oxyrinchus, Rafinesque, 1810, in the northwestern Pacific. Zoological Studies 44, 487–496.Google Scholar
Juanes, F, Hare, JA and Miskiewicz, AG (1996) Comparing early life history strategies of Pomatomus saltatrix: a global approach. Marine and Freshwater Research 47, 365–379.Google Scholar
Kerr, LA, Andrews, AH, Cailliet, GM, Brown, TA and Coale, KH (2006) Investigations of Δ14C, δ 13C, and δ 15N in vertebrae of white shark (Carcharodon carcharias) from the eastern North Pacific Ocean. Environmental Biology of Fishes 77, 337–353.Google Scholar
Klarian, SA, Canales-Cerro, C, Barría, P, Zárate, P, Concha, F, Hernández, S, Heidemeyer, M, Sallaberry-Pincheira, P and Meléndez, R (2018) New insights on the trophic ecology of blue (Prionace glauca) and shortfin mako sharks (Isurus oxyrinchus) from the oceanic eastern South Pacific. Marine Biology Research 14, 173–182.Google Scholar
Krebs, CJ (1985) Ecología: estudio de la distribución y la abundancia, 2nd Edn. Ciudad de México: Harla.Google Scholar
Krebs, CJ (1999) Ecological Methodology, 2nd Edn. Menlo Park, CA, USA: Benjamin Cummings.Google Scholar
Labropoulou, M and Eleftheriou, A (1997) The foraging ecology of two pairs of congeneric demersal fish species: importance of morphological characteristics in prey selection. Journal of Fish Biology 50, 324–340.Google Scholar
Liu, KM, Sibagariang, RD, Joung, SD and Wang, SB (2018) Age and growth of the shortfin mako shark in the Southern Indian Ocean. Marine and Coastal Fisheries 10, 577–589.Google Scholar
Loefer, JK, Sedberry, GR and McGovern, JC (2005) Vertical movements of a shortfin mako in the Western North Atlantic as determined by pop-up satellite tagging. Southeastern Naturalist 4, 237–246.Google Scholar
Lopez, S, Barría, P and Meléndez, R (2012) Feeding and trophic relationship of two highly migratory sharks in the eastern south Pacific Ocean. Pan-American Journal of Aquatic Sciences 7, 50–56.Google Scholar
López, KS, Meléndez, CR and Barría, MP (2009) Alimentación del tiburón marrajo Isurus oxyrinchus Rafinesque, 1810 (Lamniformes: Lamnidae) en el Pacífico Suroriental. Revista de Biología Marina y Oceanografía 44, 439–451.Google Scholar
Maia, A, Queiroz, N, Correia, JP and Cabral, H (2006) Food habits of the shortfin mako, Isurus oxyrinchus, off the southwest coast of Portugal. Environmental Biology of Fishes 77, 157–167.Google Scholar
Malpica-Cruz, M, Herzka, SH, Sosa-Nishizaki, O and Escobedo-Olvera, MA (2013) Tissue-specific stable isotope ratios of shortfin mako (Isurus oxyrinchus) and white (Carcharodon carcharias) sharks as indicators of size-based differences in foraging habitat and trophic level. Fisheries Oceanography 22, 429–445.Google Scholar
Márquez-García, H (2018) Hábitos alimentarios del tiburón mako, Isurus oxyrinchus, Rafinesque, 1810, de la costa occidental de Baja California Sur, México (Bachelor's thesis). Benemérita Universidad Autónoma de Puebla, Facultad de Ciencias Biológicas, México.Google Scholar
Martínez-Ortiz, J and García-Domínguez, M (2013) Guía de campo: condrictios del Ecuador. Quimeras, tiburones y rayas. Ministerio de Agricultura, Ganadería, Acuacultura y Pesca (MAGAP). Viceministerio de Acuicultura y Pesca (VMAP)/Subsecretaría de Recursos Pesqueros (SRP), Manta, Ecuador.Google Scholar
McMillan, PJ, Griggs, LH, Francis, MP, Marriott, PJ, Paul, LJ, Mackay, E, Wood, BA and Sui Hand Wei, F (2011) New Zealand fishes. A field guide to common species caught by surface fishing. Volume 3. Report No. 69. New Zealand Aquatic Environment and Biodiversity, Wellington.Google Scholar
Méndez-Macías, JS, Velázquez-Chiquito, VM, Estupiñán-Montaño, C and Galván-Magaña, F (2019) Trophic ecology and ontogenetic shift in the diet of the sicklefin smoothhound (Mustelus lunulatus) in the southeastern Pacific Ocean. Fishery Bulletin 117, 245–257.CrossRefGoogle Scholar
Mollet, HF, Cliff, G, Pratt, HL Jr and Stevens, JD (2000) Reproductive biology of the female shortfin mako, Isurus oxyrinchus, Rafinesque, 1810, with comments on the embryonic development of lamnoids. Fishery Bulletin 98, 299–318.Google Scholar
Mucientes-Sandoval, G and Saborido-Rey, F (2008) Acercamiento a la composición de la dieta de Isurus oxyrinchus, Rafinesque, 1810 en aguas del Pacífico Sur Central. Revista de Investigaciones Marinas 29, 145–150.Google Scholar
Muñoz, H (2012) Características de los otolitos sagitales de peces pelágicos pequeños de interés comercial en las costas de Santa Elena, Pacífico ecuatoriano, julio 2011-enero 2012 (Bachelor's thesis) Universidad Península de Santa Elena. Santa Elena, Ecuador.Google Scholar
Musick, JA (1999) Ecology and conservation of long-lived marine animals. In Musick, JA (ed.), Life in the Slow Lane: Ecology and Conservation of Long-Lived Marine Animals. Bethesda, Maryland: American Fisheries Society Symposium, pp. 1–10.Google Scholar
Navia, AE, Cortés, E and Mejía-Falla, PA (2010) Topological analysis of the ecological importance of elasmobranch fishes: a food web study on the Gulf of Tortuga, Colombia. Ecological Modelling 221, 2918–2926.Google Scholar
Odum, EP (1971) Fundamentals of Ecology, 3rd Edn. Philadelphia: Saunders.Google Scholar
Olson, J and Galván-Magaña, F (2002) Food habits and consumption rates of dolphinfish (Coryphaena hippurus) in the Eastern Pacific Ocean. Fishery Bulletin 100, 279–298.Google Scholar
Pincay-Espinoza, JE (2014) Descripción de la dieta del tiburón mako Isurus oxyrinchus (Rafinesque, 1810) en el Pacífico ecuatoriano (Bachelor's thesis). Universidad Laica ‘Eloy Alfaro’ de Manabí, Ecuador. Facultad de Ciencias del Mar. Manta, Ecuador.Google Scholar
Pinkas, L, Oliphant, MS and Iverson, ILK (1971) Food Habits of Albacore, Bluefin Tuna and Bonito in California Waters. Fishery Bulletin, No. 152. California: The Resources Agency, Department of Fish and Game.Google Scholar
Pope, KL, Brown, ML, Duffy, WG and Michaletz, PH (2001) A caloric-based evaluation of diet indices for largemouth bass. Environmental Biology of Fishes 61, 329–339.Google Scholar
Preti, A, Soykan, CU, Dewar, H, Wells, RJD, Spear, N and Kohin, S (2012) Comparative feeding ecology of shortfin mako, blue and thresher sharks in the California Current. Environmental Biology of Fishes 95, 127–146.Google Scholar
Ribot-Carballal, MC, Galván-Magana, F and Quiñónez-Velázquez, C (2005) Age and growth of the shortfin mako shark, Isurus oxyrinchus, from the western coast of Baja California Sur, México. Fisheries Research 76, 14–21.CrossRefGoogle Scholar
Riede, K (2004) Global register of migratory species – from global to regional scales. Final Report of the R&D-Projekt 808 05 081. Federal Agency for Nature Conservation, Bonn.Google Scholar
Rigby, CL, Barreto, R, Carlson, J, Fernando, D, Fordham, S, Francis, MP, Jabado, RW, Liu, KM, Marshall, A, Pacoureau, N, Romanov, E, Sherley, RB and Winker, H (2019) Isurus oxyrinchus. The IUCN Red List of Threatened Species 2019: e.T39341A2903170. https://dx.doi.org/10.2305/IUCN.UK.2019-1.RLTS.T39341A2903170.en (accessed on 03 September 2022).Google Scholar
Robertson, DR and Allen, GR (2015) Peces costeros del Pacífico oriental tropical: sistema de información en línea. Versión 2.0. Balboa, Panamá: Instituto Smithsoniano de Investigaciones Tropicales.Google Scholar
Roff, G, Doropoulos, C, Rogers, A, Bozec, YM, Krueck, NC, Aurellado, E, Priest, M, Birrell, C and Mumby, PJ (2016). The ecological role of shark on coral reefs. Trends in Ecology and Evolution 31, 305–407.Google Scholar
Roper, CFE, Sweeney, MJ and Hochberg, FG (1995) Cefalópodos. In Fischer, W, Krupp, F, Schneider, W, Sommer, C, Carpenter, K and Niem, V (eds), Guía FAO para la identificación de especies para los fines de la pesca, Pacífico centro oriental, Vol. 1. Plantas e invertebrados. Roma, Italy: FAO, pp. 305–354.Google Scholar
Rosas-Luis, R, Navarro, J, Loor-Andrade, P and Forero, MG (2017) Feeding ecology and trophic relationships of pelagic sharks and billfishes coexisting in the central eastern Pacific Ocean. Marine Ecology Progress Series 573, 191–201. https://doi.org/10.3354/meps12186Google Scholar
Rosas-Luis, R, Loor-Andrade, P, Carrera-Fernández, M, Pincay-Espinoza, JE, Vinces-Ortega, C and Chompoy-Salazar, L (2016b) Cephalopod species in the diet of large pelagic fish (sharks and billfishes) in Ecuadorian waters. Fisheries Research 173, 159–168.CrossRefGoogle Scholar
Rosas-Luis, R, Pincay-Espinoza, JE, Loor-Andrade, P and Carrera-Fernández, M (2016a) Trophic ecology of the shortfin mako, Isurus oxyrinchus (Lamniformes: Lamnidae) in the Eastern Pacific Ocean. In Kovács, A and Nagy, P (eds), Advances in Marine Biology. Vol. 1. New York: Nova Science Publishers, pp. 147–182.Google Scholar
Sagar, MV, Gop, AM and Nair, RJ (2018) Stomach content analysis techniques in fishes. In Nair, RJ (ed.), Recent Advances in Fishery Biology Techniques for Biodiversity Evaluation and Conservation. New Delhi: Indian Agricultural Statistics Research Institute, pp. 104–115.Google Scholar
Salerno, DJ, Burnett, J and Ibara, RM (2001) Age, growth, maturity, and spatial distribution of bluefish, Pomatomus saltatrix, off the northeast coast of the United States, 1985–96. Journal of Northwest Atlantic Fishery Science 29, 31–39.Google Scholar
Shcherbachev, YN (1987) Preliminary list of thalassobathyal fishes of the tropical and subtropical waters of the Indian Ocean. Journal of Ichthyology 27, 37–46.Google Scholar
Sminkey, TR and Musick, JA (1995) Age and growth of the sandbar shark, Carcharhinus plumbeus, before and after population depletion. Copeia 1995, 871–883.Google Scholar
Sminkey, TR and Musick, JA (1996) Demographic analysis of the sandbar shark, Carcharhinus plumbeus, in the western North Atlantic. Fishery Bulletin 94, 341–347.Google Scholar
Stevens, JD (1983) Observations on reproduction in the shortfin mako, Isurus oxyrinchus. Copeia 1983, 126–130.Google Scholar
Stillwell, CE (1990) The ravenous mako. In Gruber, SH (ed.), Discovering Sharks. A Volume Honoring the Work of Stewart Springer. Vol. 19–20. Highlands, New Jersey: American Littoral Society, pp. 77–78.Google Scholar
Stillwell, CE and Kohler, NE (1982) Food, feeding habits, and estimates of daily ration of the shortfin mako (Isurus oxyrinchus) in the northwest Atlantic. Canadian Journal of Fisheries and Aquatic Science 39, 407–414.Google Scholar
Tamburín, E, Kim, SL, Elorriaga-Verplancken, FR, Madigan, DJ, Hoyos-Padilla, M, Sánchez-González, A, Hernández-Herrera, A, Castillo-Géniz, JL, Godinez-Padilla, CJ and Galván-Magaña, F (2019) Isotopic niche and resource sharing among young sharks (Carcharodon carcharias and Isurus oxyrinchus) in Baja California, Mexico. Marine Ecology Progress Series 613, 107–124.Google Scholar
Van der Laan, R, Fricke, R and Eschmeyer, WN (2022) Eschmeyer's catalogue of fiches classification. Available at http://www.calacademy.org/scientists/catalog-of-fishes-classification/ (accessed 08 July 2022).Google Scholar
Vaske-Jr, T and Ricón-Filho, G (1998) Conteúdo estomacal dos tubarões azul (Prionace glauca) e anequim (Isurus oxyrinchus) em águas oceânicas no sul do Brasil. Revista Brasilera de Biología 58, 445–452.CrossRefGoogle Scholar
Velasco-Tarelo, PM (2005) Hábitos alimenticios e isótopos de 13C y 15N del tiburón mako, Isurus oxyrinchus (Rafinesque, 1810) en la costa occidental de Baja California Sur (Master's thesis). Centro Interdisciplinario de Ciencias Marinas. México.Google Scholar
Vetter, R, Kohin, S, Preti, A, McClatchie, S and Dewar, H (2008) Predatory interactions and niche overlap between mako shark, Isurus oxyrinchus, and jumbo squid, Dosidicus gigas, in the California Current. California Cooperative Oceanic Fisheries Investigations 49, 142–156.Google Scholar
Vinueza, E (2015) Catálogo de otolitos sagitta de especies comerciales en los cantones de Sucre y San Vicente, Manabí, Pacífico ecuatoriano (Bachelor's thesis). Pontificia Universidad del Ecuador, Leónidas Plaza Gutiérrez.Google Scholar
Wearmouth, VJ and Sims, DW (2008) Chapter 2. Sexual segregation in marine fish, reptiles, birds and mammals: behaviour patterns, mechanisms and conservation implications. Advances in Marine Biology 54, 107–170.Google Scholar
Wisner, RL (1990) Scomberesocidae. In Quero, JC, Hureau, JC, Karrer, C, Post, A and Saldanha, L (eds), Check-list of the Fishes of the Eastern Tropical Atlantic. Volume 2. (CLOFETA). Lisbon: JNICT; Paris: SEI; and Paris, France: UNESCO, pp. 598–603.Google Scholar
Wolff, G (1982) A beak key for eight Eastern Tropical Pacific cephalopod species, with relationship between their beak dimension and size. Fishery Bulletin 80, 357–370.Google Scholar
Wolff, G (1984) Identification and estimation of size from beaks of eighteen species of cephalopods from the Pacific Ocean. NOAA Technical Report NMFS no. 17. NOAA, USA.Google Scholar
Wood, AD, Wetherbee, BM, Juanes, F, Kohler, NE and Wilga, C (2009) Recalculated diet and daily ration of the shortfin mako (Isurus oxyrinchus), with a focus on quantifying predation on bluefish (Pomatomus saltatrix) in the northwest Atlantic Ocean. Fishery Bulletin 107, 76–88.Google Scholar
Wootton, RJ (1990) Ecology of teleost fishes. Chapman and Hall, London.Google Scholar
Yatsu, A (1995) The role of slender tuna, Allothunnus fallai, in the pelagic ecosystems of the South Pacific Ocean. Japanese Journal of Ichthyology 41, 367–377.Google Scholar
Young, RE, Vecchione, M and Mangold, KM (2019) Cephalopoda, Cuvier 1797, octopods, squids, nautiluses. Available at https://tolweb.org/Cephalopoda/19386/2019.03.26 (accessed 18 August 2022).Google Scholar
Zeidberg, LD and Robison, BH (2007) Invasive range expansion by the Humboldt squid, Dosidicus gigas, in the eastern North Pacific. Proceedings of the National Academy of Sciences 104, 12948–12950. https://doi.org/10.1073/pnas.0702043104Google Scholar