Javier Quiñones

Javier Quiñones
Instituto del Mar del Perú | IMARPE · Top Predators office

Phd. Universidad Nacional de Mar del Plata.
Research on sea turtles, albatrosses an petrels and scyphozoan jellyfishes.

About

60
Publications
27,949
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1,039
Citations
Citations since 2017
38 Research Items
733 Citations
2017201820192020202120222023050100150
2017201820192020202120222023050100150
2017201820192020202120222023050100150
2017201820192020202120222023050100150
Introduction
My main research and Phd thesis, among others was focused in jellyfish occurrence and its relationship with environmental variability at inter annual and inter decadal scales in Peru. Since 2007 I started a strong research on sea turtles (specially green's and Leatherbacks) and their population dynamics and foraging ecology. Lately since 2018 i shift my research to migratory seabirds specially albatrosses and petrels, their spatial distribution, foraging ecology, habitat, etc in Peru.
Additional affiliations
January 2007 - present
Instituto del Mar del Perú
Position
  • PhD
Description
  • Top Predators Research Office
Education
April 2013 - November 2018
Universidad Nacional de Mar del Plata
Field of study
  • Jellyfish and Sea Turtles
September 2001 - October 2003
Vrije Universiteit Brussel
Field of study
  • Marine Ecology Management

Publications

Publications (60)
Article
Full-text available
Preliminary findings regarding black turtle (Chelonia mydas agassizii) occurrence in Lobos de Tierra Island, Northern Peru showed that 95% and 5% of turtles were juveniles and sub-adults, respectively, with an overall mean curved carapace length of 57.5 ± 7 cm (26.0–74.4 cm, n = 199). A total mean density of 180.4 turtles/km2 was found with highest...
Article
Full-text available
Seabirds are highly threatened, including by fisheries bycatch. Accurate understanding of offshore distribution of seabirds is crucial to address this threat. Tracking technologies revolutionised insights into seabird distributions but tracking data may contain a variety of biases. We tracked two threatened seabirds (Salvin’s Albatross Thalassarche...
Article
Full-text available
Highly mobile odontocetes need habitats with environmental conditions with the potential of aggregating enough and high-quality prey, to maximize foraging success. Until now, the characterization of those habitats was in terms of physical and biological indicators of high production, capable of attracting and sustaining prey. Nevertheless, there ha...
Article
Full-text available
Feeding strategies in sea turtles are among the most important aspects of their life history, influencing demographic parameters such as growth, age-at-maturity, and reproductive migrations. However, studying sea turtle diet is often challenging and knowledge about foraging ecology is lacking for most populations worldwide. We studied green turtles...
Article
Full-text available
We report on the occurrence of albatrosses (Diomedeidae) and petrels (Procellariidae) associated with an artisanal small-scale fishery (SSF) for Humboldt Squid Dosidicus gigas in waters of southern Peru during El Niño 2015–2016 and coastal El Niño 2017. We deployed as observers on a number of fishing trips to assess seabird interactions. White-chin...
Article
A total of 7,215 observation hours were completed for all surveys. A total of 82 Chatham albatrosses were sighted from Callao (12°S) to the oceanic border with Chile (19°S) and 12–290 km offshore (Fig. 2). Most of the sightings (71%, n = 58) occurred in autumn, followed by winter (21%, n =17) and spring (5%, n = 4). Very few birds (4%, n =3) were o...
Article
Full-text available
This study provides information about the diet across geographic areas and throughout ontogeny and sex of two coastal and commercial batoid species in Peru (Chilean eagle ray Myliobatis chilensis and Pacific guitarfish Pseudobatos planiceps). Data was collected in the central coast (13°30′S to 14°30′S; Pisco district, Lima) and in the northern coas...
Article
Full-text available
RESUMEN Quiñones J, Quispe S, Romero C, Paredes E. 2021. Parámetros poblacionales y biológicos de la tortuga verde del Pacífico este, principal zona de reclutamiento en el Pacífico sur este. Bol Inst Mar Perú. 36(1): 106-130.-Con el objetivo de determinar los principales parámetros poblacionales de la tortuga verde del Pacifico este (Chelonia mydas...
Article
Full-text available
Se realizó seguimiento de capturas de tortuga laúd (Dermochelys coriacea) por la flota agallera tortuguera del puerto de San Andrés-Pisco (13°45’S, 76°13’W) en la costa centro sur del Perú, durante el fenómeno El Niño (EN) 1987. Se analizó biometría, necropsias, determinación de abundancias de medusas Scyphozoa y encuestas a pescadores artesanales...
Article
Full-text available
La tortuga pico de loro (Lepidochelys olivacea) en el Pacifico este se distribuye espacialmente desde México hasta el Perú,pero sus principales zonas de anidación están restringidas a las costas de México, Nicaragua, Costa Rica y Panamá, también se han reportado algunos anidamientos aislados en Colombia y Ecuador. En Perú, la información de anidami...
Article
Full-text available
El presente trabajo está basado en el análisis espacio-temporal del ave fragata (Fregata magnificens) relacionado a temperatura y salinidad superficial del mar y el índice ICEN, mediante el análisis multivariado de componentes principales, cuya respuesta es la distribución espacio temporal de la especie, explicando la asociación de la distribución...
Article
Full-text available
A pesar de la importancia de los cetáceos odontocetos teutófagos como depredadores en el ecosistema pelágico, su distribución espacial en el ámbito marino peruano es poco conocida. Se utilizó información de 21 cruceros de evaluación hidroacústica de recursos pelágicos (2000-2014) conducidos por el Instituto del Mar del Perú a lo largo de la costa p...
Chapter
The productive eastern boundary current (EBC) systems provide significant sources of global marine protein and have been subject to intense research over the last 50 years. Yet large jellyfish, which are present in all four major systems, have seldom been included in otherwise comprehensive reviews. This undoubtedly reflects their lack of intrinsic...
Article
Full-text available
Se estudiaron los hábitos alimentarios de la tortuga verde del Pacifico Este Chelonia mydas agassizii (Boucort, 1868) durante el periodo 2013 - 2018 en el estuario de Virrilá, Sechura. Se practicó la técnica de lavado esofágico a 119 ejemplares vivos. La mayoría de los ejemplares analizados fueron sub – adultos (61,9%), seguidos por juveniles (29,2...
Technical Report
Full-text available
In July 2020, the Conservation Planning Specialist Group (CPSG) of the International Union for Conservation of Nature (IUCN) Species Survival Commission (SSC) was enlisted by the international non-profit sea turtle conservation organization, Upwell, to design and facilitate a two-step decision making process to inform conservation efforts for the C...
Article
Three albatross species occur in Perú that nest in New Zealand offshore islands: Salvin's (Thalassarche salvini), Buller's (T. bulleri ssp.), and Chatham albatross (T. eremita). To determine their spatial distribution, relative abundances, and foraging behavior in Perú, we conduct two surveys coinciding their wintering time in the austral autumn an...
Article
The Black-browed Albatross (Thalassarche melanophris) has a circumpolar, well-documented, breeding distribution in the southern hemisphere. However, information on post-breeders and juveniles dispersal is scarce, particularly off western South America. Records off Chile occur commonly as north as~24°S. Although the presence of the species in Peru i...
Article
Is about the seasonal occurrence of the Northern Giant Petrel (Macronectes halli) in Peruvian waters using historical data. In addition, some hypothesis regarding their precedence is as well-developed, you will enjoy it a lot.
Article
Full-text available
The Eastern Pacific leatherback turtle population (Dermochelys coriacea) has declined precipitously in recent years. One of the major causes is bycatch from coastal and pelagic fisheries. Fisheries observations are often underutilized, despite strong potential for this data to affect policy. In this study, we created a spatiotemporal species distri...
Technical Report
Full-text available
En 2018, el Comité Científico de la Convención Interamericana para la Protección y Conservación de las Tortugas Marinas (CIT) elaboró un documento técnico titulado Análisis de Datos en Playas Índice de la CIT (2009-2018), una actualización de un informe previo que contenía datos del periodo 2009-2013 (CIT-CC11-2014-Tec.7). En el presente documento...
Article
Full-text available
Failure to improve the conservation status of endangered species is often related to inadequate allocation of conservation resources to highest priority issues. Eastern Pacific (EP) leatherbacks are perhaps the most endangered sea turtle population in the world, and continue on a path to regional extinction. To provide coherent, regional conservati...
Preprint
Full-text available
Killer whales (Orcinus orca) are widely distributed in all ocean basins however, their occurrence, distribution and ecology in the southeast Pacific, including Peru, is poorly defined. This study aims to describe the occurrence of killer whales in Peruvian waters, with additional description of predatory behaviors. Between 2003 and 2018 there were...
Article
Full-text available
Killer whales (Orcinus orca) are widely distributed in all ocean basins however, their occurrence, distribution and ecology in the southeast Pacific, including Peru, is poorly defined. This study aims to describe the occurrence of killer whales in Peruvian waters, with additional description of predatory behaviors. Between 2003 and 2018 there were...
Thesis
Full-text available
Se estudiaron las interacciones temporales entre la variabilidad climática y la ecología de la medusa Scyphozoa Chrysaora plocamia en el ecosistema norte de la corriente de Humboldt (ENCH), en aguas territoriales peruanas, un área de importancia pesquera mundial. Este ecosistema está influenciado por la variabilidad climática del fenómeno El Niño (...
Article
Full-text available
Durante el verano austral del 2016, una agregación del Petrel de Anteojos Procellaria conspicillata fue fotografiada. La especie es endémica de la isla Inaccesible, en el grupo de Tristan da Cunha (Atlántico Sur Central). Es considerada una visitante ocasional en Argentina durante su dispersamiento pelágico, existen algunos pocos registros en aguas...
Article
Large jellyfish are important consumers of plankton, fish eggs and fish larvae in heavily fished ecosystems worldwide; yet they are seldom included in fisheries production models. Here we developed a trophic network model with 41 functional groups using ECOPATH re-expressed in a donor-driven, end-to-end format to directly evaluate the efficiency of...
Article
Full-text available
In the Northern Humboldt Upwelling System (NHUS), one of the most productive ecosystems in the world, the large jellyfish Chrysaora plocamia exhibits high inter-annual variability in population size, often resulting in massive blooms. In this study, we examined the geographic patterns C. plocamia in the NHUS and their spatial overlap with ichthyopl...
Article
Full-text available
Se registra por primera vez para Perú a Cricocephalus albus (Digenea: Pronocephalidae) en la tortuga verde del Pacífico oriental (Chelonia mydas agassizii). Los parásitos fueron colectados durante la necropsia de una tortuga verde varada en el estuario de Virrilá localizado en la provincia de Sechura, Departamento de Piura, Perú. El presente trabaj...
Article
Full-text available
The Pisco-San Andrés area (13°44´S, 76°13´W) in central Peru is known for a traditional historic sea turtle fishery. To determine if illegal captures and black market trade exist, we carried out bi-weekly sampling in dumpsites and coastal areas from 2009 to 2015. A total of 953 carapaces were encountered, which included mainly black turtles (Chelon...
Article
Full-text available
Jellyfish (primarily scyphomedusae) fisheries have a long history in Asia, where jellyfish have been caught and processed as food for centuries. More recently, jellyfish fisheries have expanded to the Western Hemisphere, often driven by demand from Asian buyers and collapses of more traditional local fish stocks. Jellyfish fisheries have been attem...
Article
Full-text available
We have compiled available records in the literature for medusozoan cnidarians and ctenophores of South America. New records of species are also included. Each entry (i.e., identified species or still as yet not determined species referred to as “sp.” in the literature) includes a synonymy list for South America, taxonomical remarks, notes on habit...
Poster
Las tortugas verdes Chelonia mydas agassizii del estuario de Virrilá, Piura, Perú estarían expuestas a cepas de Echerichia coli resistentes a antibióticos, lo cual constituye una alerta sobre el grado de diseminación de agentes resistentes, así como la creciente contaminación de ambientes marinos y continentales por aguas residuales no tratadas.
Article
Full-text available
There is a general concern that jellyfish populations are increasing throughout marine ecosystems worldwide, mainly due to environmental (e.g., climate drivers) and anthropogenic forces (e.g., overfishing and eutrophication), or interactions among them. To identify drivers of jellyfish populations in the heavily fished northern Humboldt upwelling s...
Article
Full-text available
The presence of the Yellow-bellied Sea Snake (Hydrophis platurus) in the Southeast Pacific is rarely reported, with only one confirmed observation from northern Perú made in the early 1950s. We present new information based on a live-stranded specimen recently found in Peruvian waters, having washed ashore at Máncora (04.1255° S, 81.0958° W) in nor...
Article
Full-text available
A majority of the world’s largest net-based fisheries target planktivorous forage fish that serve as a critical trophic link between the plankton and upper-level consumers such as large predatory fishes, seabirds, and marine mammals. Because the plankton production that drives forage fish also drives jellyfish production, these taxa often overlap i...
Article
Full-text available
In order to enhance protection and conservation strategies for endangered green turtles (Chelonia mydas), the identification of neritic habitats where this species aggregates is mandatory. Herein, we present new information about the population parameters and residence time of two neritic aggregations from 2010 to 2013; one in an upwelling dominate...
Chapter
Full-text available
Blooms and strandings of Chrysaora plocamia are reported to occur along both Atlantic and Pacific South American coasts. First described in Peruvian waters by Lesson (Zoologie 2(2):135, 1830) almost two centuries ago as Cyanea plocamia, there is surprisingly little ecological information about this conspicuous animal. This chapter reviews current k...
Technical Report
Full-text available
Espino M, Ayón P, Cornejo R, Alarcón J, Vásquez L, Quiñonez J, Chang F, Goya E, Villegas P, Velazco F, Quipuzcoa L, Castillo D, Quesquén R, Rivadeneyra S, Correa J. 2016. Marine ecosystem of Bransfield strait, Admiralty bay and around of Joinville and Elephant islands. ANTAR XXII. Bol Inst Mar Perú. 31(2): 229-294.- In the austral summer 2014, the...
Poster
La tortuga verde (Chelonia mydas) está ampliamente distribuida a lo largo de toda la costa de Perú. Debido a que la actividad de anidación es baja, se sospecha que los juveniles, sub-adultos y adultos reclutan de áreas de anidación en el Pacífico. Investigamos la diversidad genética y la estructura de tres agregaciones distintas usando la región co...
Article
Full-text available
A perceived recent increase in global jellyfish abundance has been portrayed as a symptom of degraded oceans. This perception is based primarily on a few case studies and anecdotal evidence, but a formal analysis of global temporal trends in jellyfish populations has been missing. Here, we analyze all available long-term datasets on changes in jell...
Article
Full-text available
ABSTRACT. The main purpose of this work is to present evidence of sea turtles by-catch increase in northern Peru during the 1997-1998 El Niño Southern Oscillation (ENSO) process. The study area is located off Lambayeque, between 6°20’S and 7°10’S, and from the coastline up to 35 nm offshore. The gill-net artisanal fishery was analyzed and described...
Article
Full-text available
Peru supports one of the world’s largest single-species fisheries based on the Peruvian anchovy (Engraulis ringens L. Jenyns, 1842), and bycatch of the scyphomedusa Chrysaora plocamia (Lesson, 1832) affects this fishery. Medusae display strong seasonal fluctuations, with peak abundances during summer. Off southern Peru and during the austral summer...
Article
Full-text available
Despite the fact that the hawksbill turtle (Eretmochelys imbricata) is widely distributed in tropical waters throughout the central Atlantic and Indo Pacific region, its worldwide population has declined severely during the last several decades (Mortimer & Donnelly 2008). In the East Pacific (EP), the status of the hawksbill is considered precariou...
Patent
Full-text available
el siguiente Informe Nacional, se presenta un diagnóstico sobre el estado de conservación de las tortugas marinas en el Perú. Dicho diagnóstico resume el estado actual de conocimiento de las diferentes especies de tortugas marinas que ocurren en aguas peruanas, tanto en aspectos biológicos como ecológicos: distribución, migraciones, reproducción y...
Conference Paper
Full-text available
There is a general concern on that jellyfish populations are increasing worldwide, mainly due to environmental (i.e. global warming) and/or anthropogenic influences (e.g. cultural eutrophication and overfishing). Using a variety of fishery-based time-series information, we constructed a 38 year-long record of the scyphomedusa Chrysaora plocamia. Al...
Article
Full-text available
We analyzed sea temperature as an environmental factor, in association with ENSO, affecting the migration of East Pacific black turtle, Chelonia mydas (=Chelonia agassizii Bocourt), to its foraging areas and its feeding ecology at San Andrés, Peru. A 19-year sea turtle landing database (1970–1988) was constructed to associate landing fluctuations w...
Article
Full-text available
Vessels from Japan, Peru, and the USA conducted four sequential surveys designed to estimate the biomass density and demography ofAntarctic krill in the vicinity ofthe South Shetland Islands between late December 1999 and early March 2000. The surveys were conducted during the same austral summer as the CCAMLR 2000 Survey in the Scotia Sea (Watkins...

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Projects (5)
Project
El Instituto del Mar del Perú (Imarpe) a través de la Oficina de Investigaciones en Depredadores Superiores en colaboración con la Unidad de Investigación de Ecosistemas Marinos - Grupos Aves Marinas de la Universidad Científica del Sur (UCSUR) viene llevando a cabo el proyecto denominado “Integración de un programa de observadores a bordo y datos de seguimiento remoto para evaluar las interacciones entre las pesquerías de palangre en pequeña escala y los albatros de Chatham (Thalassarche eremita) y de Buller del Norte (Thalassarche bulleri platei) en sus zonas de invernada frente a Perú” el cual es financiado por el Acuerdo para la Conservación de Albatros y Petreles (ACAP), del cual el Perú es miembro.
Project
To identify the main biological parameters of the Albatrosses and Petrels during their wintering period in the Northern Humboldt Current System in Peru, such as relative abundances, spatial coverage at seasonal scales, habitat preferences, size classes and foraging ecology in Peruvian waters, focussing on several species from New Zealand (Buller's, Salvin's and Chatham), Southern Chile (Black-browed and Grey headed) and Galápagos Islands (Waved albatross). and Northern Giant Petrel, Parkinson petrel, White-chinned petrel and Masatierra petrel.
Project
In this project we want to find out the spatial (longitudinal, latitudinal, hot spots) Chrysaora plocamia response to several biological drivers like chlorophyll, zooplankton volume, sardine eggs, sardine larvae, anchovy eggs and anchovy larvae in several climate scenarios like: El Niño years, La Niña years and Neutral Years. and try to find its implications to fisheries in the most important eastern Boundary Ecosystems like the Northern Humboldt Upwelling Ecosystem (Perú).