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Cephalopoda: Argonautidae) by the Common Black Hawk Buteogallus Anthracinus (Accipitriformes: Accipitridae) Revista Ciencias Marinas Y Costeras, Vol

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Cephalopoda: Argonautidae) by the Common Black Hawk Buteogallus Anthracinus (Accipitriformes: Accipitridae) Revista Ciencias Marinas Y Costeras, Vol Revista Ciencias Marinas y Costeras ISSN: 1659-455X [email protected] Universidad Nacional Costa Rica Herrera, Federico; González, Mónica First record of predation of the paper nautilus Argonauta nouryi (Cephalopoda: Argonautidae) by the common black hawk Buteogallus anthracinus (Accipitriformes: Accipitridae) Revista Ciencias Marinas y Costeras, vol. 9, núm. 1, enero-junio, 2017, pp. 85-89 Universidad Nacional Heredia, Costa Rica Available in: http://www.redalyc.org/articulo.oa?id=633766726005 How to cite Complete issue Scientific Information System More information about this article Network of Scientific Journals from Latin America, the Caribbean, Spain and Portugal Journal's homepage in redalyc.org Non-profit academic project, developed under the open access initiative First record of predation of the paper nautilus Argonauta nouryi (Cephalopoda: Argonautidae) by the common black hawk Buteogallus anthracinus (Accipitriformes: Accipitridae) Primer registro de depredación del nautilo de papel Argonauta prueba de galera pruebanouryi (Cephalopoda: Argonautidae) de por galera el gavilán cangrejero negro Buteogallus anthracinus (Accipitriformes: Accipitridae) Federico Herrera1* y Mónica González1 ABSTRACT Predation of cephalopods by non-marine birds is rare, especially within the Accipitriformes order. Obser- vations took place in situ and identification of Argonauta nouryi was entirely based on the shell form. The predation of the paper nautilus, A. nouryi, by the common black hawk, Buteogallus anthracinus, is reported for the first time at the Murciélago Sector of the Santa Rosa National Park, Guanacaste, Costa Rica. This represents the first known bird predator of this species within the country. Keywords: Predation, Santa Rosa National Park, Costa Rica, cephalopod, behavior, hawk. RESUMEN La depredación de cefalópodos por parte de aves no marinas es rara, sobre todo en aves del orden prueba de galera pruebaAccipitriformes. Las observaciones se llevaron de a cabo in situgalera y la identificación de Argonauta nouryi fue completamente basada en la forma de la concha. Se registra por primera vez la depre- dación del nautilo de papel, A. nouryi, por el gavilán cangrejero negro, Buteogallus anthracinus, en el Sector Murciélago del Parque Nacional Santa Rosa, Guanacaste, Costa Rica, lo cual repre- senta la primera ave conocida depredadora de esta especie en el país. Palabras claves: Depredación, Parque Nacional Santa Rosa, Costa Rica, cefalópodo, comportamiento, gavilán. INTRODUCTION In Costa Rica, there are four valid species of the genus Buteogallus Lesson, 1830. Stiles & Skutch (2003) report three taxa, Buteogallus anthracinus (Deppe, 1830), Buteogallus urubitinga (Gmelin, 1788) and Buteogallus solitarius (Tshudi, 1844). The last species reported for the genus in the country is Buteogallus meridionalis (Latham, 1790) (Obando-Calderón et al. 2008). prueba de galera pruebaRegarding B. anthracinus, it hasde been reported galera to prey mainly on crabs complemented by reptiles, frogs, sea turtle eggs and hatchlings, frogs, snakes, 1 Facultad de Ciencias Exactas y Naturales, Universidad Estatal a Distancia, UNED, 474-2050, San Pedro de Montes de Oca, San José, Costa Rica. [email protected]*, [email protected] Recibido: 07 septiembre 2016 Corregido: 19 mayo 2017 Aceptado: 22 mayo 2017 Licencia Creative Commons Atribución No Comercial DOI: http://dx.doi.org/10.15359/revmar.9-1.5 Compartir Igual 4.0 Internacional Rev. Mar. Cost. ISSN 1659-455X. Vol. 9 (1): 85-89, Enero-Junio 2017. 85 Herrera y González crayfish, lizards, large insects, stranded Finn (2014). The time lapse between fishes and carrion, always near water observations and the preparation of such as mangroves, coasts, marshes, this report was due to the difficulty to and swamps (Stiles & Skutch, 2003; identify the paper nautilus species and Ferguson-Lees & Christie, 2010). the considerable confusion existing Regarding the genus Argonauta for centuries among taxonomists until pruebaLinnaeus, 1758, and according to Finnde the recent galera studies by Finn (2013; prueba de galera (2014), there are four described species 2014). Female shells of A. nouryi in the world and on the Pacific Coast were collected, right under the perch of Costa Rica only two species can be after being dropped by B. anthracinus, found, Argonauta argo Linnaeus, 1758 and were deposited (specimens and Argonauta nouryi Lorois, 1852. MZUCR10424-01) at the Museum The first record of predation of of Zoology of Universidad de Costa the paper nautilus, A. nouryi, by the Rica, MZUCR. common black-hawk, B. anthracinus, is herein presented. DISCUSSION In Costa Rica reports of cephalopod MATERIALS AND METHODS predation by birds in the literature Observations by the authors took is rare and only for squids. Stiles & pruebaplace in Sortija Beach (10° 55ʼ 36ʼʼde Skutch (2003)galera reported predation of prueba de galera N, 85° 49ʼ 07.78ʼʼ W), Gulf of Santa squids in six marine bird families. Elena, Murciélago Sector, Santa Rosa Procellariidae, Galapagos Petrel, National Park, Guanacaste province, Pterodroma phaeopygia (Salvin, 1876); Costa Rica. Bird species were Phaethontidae, Red-billed Tropicbird, identified in situ using binoculars, Phaethon aethereus Linnaeus, 1758; following the information proposed by Stercorariidae, Pomarine Jaeger, Stiles & Skutch (2003). Stercorarius pomarinus (Temminck, Sightings took place on August 1815); Sulidae, Blue-footed Booby, 3rd, 2011, CST 10:27. The bird was Sula nebouxii Milne-Edwards, 1882; observed several times consuming Fregatidae, Magnificent Frigatebird, specimens of A. nouryi, dropping their Fregata magnificens Mathews, shells to the ground, and piling them 1914 and Great Frigatebird, Fregata up, while remaining perched on a small minor (Gmelin, 1789); Laridae, pruebatree (3 to 4 meters tall) very close to dethe Sooty Tern,galera Onychoprion fuscatus prueba de galera shore (Fig. 1). After eating them, it left (Linnaeus, 1766), Bridled Tern, the perch and headed to the sea again Onychoprion anaethetus (Scopoli, to come back to the perch after a while 1786) and Sandwich Tern, Thalasseus with a new argonaut to consume. sandvicensis (Latham, 1787). Identification of A. nouryi was On the other hand, the genus entirely based on the shell form (Fig. Argonauta has been reported to be 2), using the information proposed by consumed by different marine birds 86 Rev. Mar. Cost. ISSN 1659-455X. Vol. 9 (1): 85-89, Enero-Junio 2017. First record of predation of the paper nautilus Argonauta nouryi (Cephalopoda: Argonautidae) prueba de galera prueba de galera Fig. 1. Buteogallus anthracinus in Sortija Beach, Santa Rosa National Park, Guanacaste, Costa Rica. Perched where it was observed consuming specimens of Argonauta nouryi (right). Flying away from the perch to the sea (left) Fig. 1. Buteogallus anthracinus en Playa Sortija, Parque Nacional Santa Rosa, Guanacaste, Costa Rica. Perchado donde fue observado consumiendo especímenes de Argonauta nouryi (derecha). Volando desde la percha hacia el mar (izquierda) prueba de galera prueba de galera prueba de galera prueba de galera Fig. 2. Argonauta nouryi. Female shell of Buteogallus anthracinus found under the perch in Sortija Beach, Santa Rosa National Park, Guanacaste, Costa Rica Fig. 2. Argonauta nouryi. Concha de la hembra de Buteogallus anthracinus encontrada debajo de la percha en Playa Sortija, Parque Nacional Santa Rosa, Guanacaste, Costa Rica Rev. Mar. Cost. ISSN 1659-455X. Vol. 9 (1): 85-89, Enero-Junio 2017. 87 Herrera y González within the American continent, but Finn, J. K. (2013). Taxonomy and biology none of them present in Costa Rica, of the argonauts (Cephalopoda: Argo- such as the species mentioned by nautidae) with particular reference to Imber (1992), Croxall & Prince Australian material. Molluscan Res., (1996), Fonseca et al. (2001), Fonseca 33(3), 143-222. http://dx.doi.org/10.1 & Petry (2007) and Pinto et al. (2007). 080/13235818.2013.824854 pruebaStrandings of argonauts havede Finn, J. K. galera(2014). Family Argonautidae. In prueba de galera P. Jereb, C. F. E. Roper, M. D. Norman been reported by Grove (2014) and & J. K. Finn (Eds.), Cephalopods of the by Grove & Finn (2014) in Tasmania, world. An annotated and illustrated ca- but in Sortija beach no strandings or talogue of cephalopod species known to other shells were observed, except for date. Volume 3. Octopods and Vampire the ones piled up under the perch. This Squids (pp. 228-237). Italy, Rome: FAO reinforces that B. anthracinus was Species Catalogue for Fishery Purposes. fishing them directly from the sea and Fonseca, V. S. S. & Petry, M. V. (2007). Evi- not collecting them from the ground of dence of food items used by Fulmarus the shore. We consider B. anthracinus glacialoides (Smith 1840) (Procella- riiformes: Procellariidae) in Southern is an opportunist and the changes Brazil. Polar Biol., 30(3), 317-320. in its diet are primarily due to food doi: 10.1007/s00300-006-0185-7 availability, as affirmed by Rodríguez- Fonseca, V. S. S., Petry, M. V. & Josh, pruebaFlores et al. (2010). deA. H. galera(2001). Diet of the Magellanic prueba de galera This observation is key to Penguin on the Coast of Rio Grande demonstrate the complex trophic do Sul, Brazil. Waterbirds, 24(2), 290- interactions between the two species, 293. doi: 10.2307/1522046 which were unknown to exist. This Grove, S. (2014). Invasion of the argo- observation is also key because no nauts! Tasmanian Nat., 136, 67-73. Grove, S. J. & Finn, J. K. (2014). Unusual bird species has been reported
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