Hugo Arancibia

Hugo Arancibia
University of Concepción · Aquatic Systems Unit

About

57
Publications
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Publications

Publications (57)
Article
Engraulis ringens (anchovy) is a small pelagic fish of the Family Engraulidae that inhabits the neretic‐coastal zone from northern Peru to south‐central Chile. It is the main resource species of industrial fishing of northern Chile, representing 80% of the annual landings of the purse seine fleet. The history of this fishery (1985–2023) shows a str...
Article
The stock biomass of the carrot prawn (Pleuroncodes monodon) in the south-central area of Chile (33º–39◦S) has decreased progressively in the last 12 years. The depletion and lack of recovery of carrot prawn and other fish and crustacean stocks has been attributed mostly to fishing mortality (F). Predation can be also an important factor for the dy...
Article
Full-text available
Pleuroncodes monodon es 1 de las 3 especies que sustentan las pesquerías demersales de crustáceos en Chile, con niveles de desembarque que han mostrado amplias variaciones y una muy lenta recuperación en la última década. La unidad de pesquería sur se encuentra en estado de recuperación desde 2017, después de una intensa sobrepesca, la que afectó t...
Article
Full-text available
Many marine fisheries rely on production and energy flow in the pelagic zone; thus, sustainable management of exploited pelagic fishes benefits from insight into temporal, spatial, and ontogenetic variability in the trophic ecology of these species. Here, we analyze stomach contents and stable isotopes to reveal spatial variability (focusing on two...
Article
Full-text available
Engraulis ringens (E. ringens) is a small pelagic fish of which the geographic and bathymetric distribution is conditioned by fluctuations in oceanographic conditions at different time scales (daily, weekly, monthly, annually, supra-annually, and longer) and by fishing. Understanding the organism−environment interactions and predicting the spatial...
Article
Full-text available
The abundance of juvenile fish changes due to endogenous processes, and determining the functional relationships among conspecifics is essential for fisheries’ management. The hake (Merluccius gayi) is an overexploited demersal fish widely distributed in Chile, from 23°39′ S to 47°00′ S in shallow and deep water over the continental shelf and shelf...
Article
Full-text available
The continental shelf off central-south Chile sustains highly productive fisheries. The sustainability of these resources is nevertheless in jeopardy since many of them are either overexploited or collapsed. Using an allometrically (size-based) parameterized model of the shelf s food web, we analyze the likely ecosystem effects of fishing in this s...
Poster
Full-text available
Los análisis de isótopos estables (δ13C y δ15N) permiten el estudio del nicho trófico, las interacciones en la trama trófica y el flujo de energía en múltiples organismos y ambientes. Esta metodología requiere de un tratamiento previo de las muestras para eliminar sesgos debido a la presencia de lípidos que empobrecen los valores estimados de δ13C....
Poster
Full-text available
Nuevos antecedentes de la alimentación de la reineta Brama australis en aguas del Pacífico Sur Oriental. Animales capturados en tres localidades de Chile.
Article
A multispecies virtual population analysis (MSVPA) model for the southern Chilean demersal fishery was developed. Species included the Southern Hake Merluccius australis, Pink Cusk-eel Genypterus blacodes (hereafter, “Kingklip”), Southern Blue Whiting (SBW) Micromesistius australis, and Patagonian Grenadier (also known as Argentine Straptail) Macru...
Article
Management and Exploitation Areas for Benthic Resources (MEABR) is the most common type of coastal marine protected area in Chile, being used for managing inshore benthic resources since 1991. The structure of the biological community in MEARBs are poorly studied and it is though that a better understanding of this framework is key to sustainabilit...
Chapter
Hoki or Patagonian grenadier (Macruronus novaezelandiae magellanicus) is a fishing resource in south and central Chile and partially supports the demersal fleet based on gadoid species such as common hake (Merluccius gayi), Southern hake (Merluccius australis) and Southern blue whiting (Micromesistius australis). M. novaezelandiae magellanicus is d...
Chapter
The biology, fishery and market of Chilean hake, also known as common hake (Merluccius gayi gayi) in the Southeastern Pacific Ocean (23°39' 49°0'S), are reviewed. We also review the recent status of the hake stock and present an updated conceptual model of the population dynamics, considering the accumulated knowledge after 45 years of fishery expl...
Article
Full-text available
A food web model is constructed to describe predator-prey interactions, community structure and trophic flows in northern Chile upwelling ecosystem (18 degrees 20'S, 24 degrees S), for the year 1997. The model is built using the Ecopath with Ecosim software version 6.4, and encompasses 21 functional groups, ranging from primary producers (phytoplan...
Article
Full-text available
A food web model is constructed to describe predator-prey interactions, community structure and trophic flows in northern Chile upwelling ecosystem (18°20'S, 24°S), for the year 1997. The model is built using the Ecopath with Ecosim software version 6.4, and encompasses 21 functional groups, ranging from primary producers (phytoplankton) to top pre...
Article
This paper assesses changes in the southern Humboldt system (33–39 °S) in the 20th century by constructing and comparing food web models representing four historical periods: (i) lightly exploited (<1900s), (ii) altered by removal of marine mammals (1950), (iii) development of industrial fisheries (1992), and (iv) the more recent state (2005) when...
Article
A 22-group Ecopath model representing the southern Humboldt (SH) upwelling system in the year 1970 is constructed. The model is projected forward in time and fitted to available time series of relative biomass, catch and fishing mortality for the main fishery resources. The time series cover the period 1970 to 2004 and the fitting is conducted usin...
Article
We analyzed recent food web and fish stock changes in the central Chile marine ecosystem, comparing the roles of jumbo squid (Dosidicus gigas) as predator, the environment, and fishing. To accomplish this we used food web modeling and the Ecopath with Ecosim software (EwE). The principal fish stocks have experienced wide decadal fluctuations in the...
Article
Fishing mortality and primary production (or proxy for) were used to drive the dynamics of fish assemblages in 9 trophodynamic models of contrasting marine ecosystems. Historical trends in abundance were reconstructed by fitting model predictions to observations from stock assessments and fisheries independent survey data. The model fitting exercis...
Article
Full-text available
The diet of jumbo squid (Dosidicus gigas) off southern-central Chile is described to examine potential biases in the determination of their main prey. Specimens were collected from catches using different fishing gear (jigging, trawl and purse-seine), from July 2003 to January 2004, and from December 2005 to October 2006. The stomach contents were...
Article
Total Chilean hake (Merluccius gayi) landings from off central Chile (33°-39°S) declined from 120,000 t in 2004 to 40,000 t in 2007. This paper evaluates the impacts of both fishing and Dosidicus gigas predation relative to the observed collapse of M. gayi. We provide a brief review of the state of M. gayi stock using population indicators. In addi...
Article
Full-text available
Size-based prey selectivity in Chilean hake (Merluccius gayi gayi) is analyzed using a data base of stomach contents collected from 1992 to 1997. The Ursin prey selectivity index and the size-based selectivity coefficients were calculated by age for the Chilean hake (cannibalism); the galatheids squat lobster (Pleuroncodes monodon) and yellow squat...
Article
Full-text available
An ecotrophic model was constructed to assess energy flows in the pelagic food web off northern Chile (18º20'S - 24º00'S; from the coast to 60 nm west; encompassing 35,000 km 2 ) in 1989. Required input parameters were obtained from the literature and other models applied to upwelling ecosystems. The model considered 13 functional groups. Although...
Article
Size-based prey selectivity in Chilean hake (Merluccius gayi gayi) is analyzed using a data base of stomach contents collected from 1992 to 1997. The Ursin prey selectivity index and the size-based selectivity coefficients were calculated by age for the Chilean hake (cannibalism); the galatheids squat lobster (Pleuroncodes monodon) and yellow squat...
Article
Full-text available
An ecotrophic model was constructed to assess energy flows in the pelagic food web off northern Chile (18°20'S - 24°00'S; from the coast to 60 nm west; encompassing 35,000 km 2) in 1989. Required input parameters were obtained from the literature and other models applied to upwelling ecosystems. The model considered 13 functional groups. Although t...
Article
The worldwide increasing trend in fishing catches together with the impact of fishing on ecosystems and inefficient fishery management have led to overfishing and frequent collapse of traditional fish stocks. In this context, the assessment of fishery-induced impacts and the implementation of ecosystem-based fisheries management programs are urgent...
Article
Full-text available
We explore long-term changes in the mean trophic level (TLm) of Central Chile fishery landings, using a 21 years data series (1979-1999) of official landings (Chilean Fisheries Service) of 16 species that comprise about 95% of total landing, and their corresponding trophic level estimated using gut content analysis and a trophic model of the Centra...
Article
We explore long-term changes in the mean trophic level (TLm) of Central Chile fishery landings, using a 21 years data series (1979-1999) of official landings (Chilean Fisheries Service) of 16 species that comprise about 95% of total landing, and their corresponding trophic level estimated using gut content analysis and a trophic model of the Centra...
Article
Large-scale, mass-balance trophic models have been developed for northern and southern regions of both the Benguela and Humboldt upwelling ecosystems. Four of these Ecopath models were compared and calibrated against one another. A common model structure was established, and a common basis was used to derive poorly known parameter values. The four...
Article
An exponential model provided the best description of the gastric evacuation of the redspotted catshark Schroederichthys chilensis and predicted that 98% of a single initial meal was evacuated in 73·9 h at 16·3°C, slower than that reported for other elasmobranchs.
Article
Full-text available
The MULTIFAN method was used to analyse a series of monthly length-frequency distributions of the squat lobster Cervimunida johni Porter (1903) (Galatheidae), for the estimation of growth and age composition in the fishing area off Coquimbo (29°59’S-71°22’W), in the northern-central area off Chile. Length frequency data (LFD) were collected from co...
Article
Full-text available
The MULTIFAN method was used to analyse a series of monthly length-frequency distributions of the squat lobster Cervimunidajohni Porter (1903) (Galatheidae), for the estimation of growth and age composition in the fishing area off Coquimbo (29°51'S-71°22'W), in the northern-central area off Chile. Length frequency data (LFD) were collected from com...
Article
Trophic interactions and community structure in the upwelling system off Central Chile (USCCh) (33–39°S) are analyzed using biological and ecological data concerning the main trophic groups and the Ecopath with Ecosim software version 5.0 (EwE). The model encompasses the fisheries, cetaceans, sea lion, marine birds, cephalopods, large-sized pelagic...
Article
Trophic interactions and community structure of commercial fishery species off Central Chile (33°–39°S) were analyzed and compared for 1992 and 1998 by ecotrophic modelling, using the Ecopath modelling software. The model encompasses the fishery, pinnipeds (sea lions), small pelagic fish (anchovy, pilchard), medium-sized pelagic fish (horse mackere...
Article
Full-text available
The frequency of microincrement formation in sagittae otoliths of jack mackerel Trachurus symmetricus was validated using experiments on captive fish. Adult jack mackerel were injected with a dose of 100 mg of oxytetracycline/kg of fish. A second injection was performed 30 days later. The fish were then sacrificed and their sagittae otoliths were e...
Article
The frequency of microincrement formation in sagittae otoliths of jack mackerel Trachurus symmetricus was validated using experiments on captive fish. Adult jack mackerel were injected with a dose of 100 mg of oxytetracycline/kg of fish. A second injection was performed 30 days later. The fish were then sacrificed and their sagittae otoliths were e...
Article
Full-text available
The applicability of a method, based on varing distance between traps, for estimating attraction area (Aat) and effective fishing area (Aef), for Cancer porteri caught with experimental traps, was tested. Based on fishing experiments, where lines of traps were set with different spacing between them, the minimum distance at which Aat of adjacent tr...
Article
Full-text available
The trophic dynamic of jack mackerel Trachurus symmetricus murphyi, caught off the coast of northern Chile, between the spring 1993 and winter 1994, is described. Relative importance of prey taxa, identification of ontogenetic trophic units and prey selectivity by size was evaluated. The main prey in terms of relative importance were euphausids, fo...
Article
Full-text available
. The trophic dynamic of jack mackerel Trachurus symmetricus murphyi, caught off the coast of northern Chile, between the spring 1993 and winter 1994, is described. Relative importance of prey taxa, identification of ontogenetic trophic units and prey selectivity by size was evaluated. The main prey in terms of relative importance were euphausids,...
Article
Full-text available
The instantaneous gastric evacuation rate for Trachurus symmetricus murphyi of northern Chile, was experimentally determined. The specimens were transported in bins from the fishing area to port of Iquique, aboard a purse-seine vessel. Later, they were placed separately in cages inside a fishpond. Fish specimens (16.5 to 24 cm FL) were then starved...
Article
Se analiza la alimentación de Merhtccitts gayi gayi de Chile central, en el largo plazo, usando la frecuencia de aparición porcentual de los taxa presas, basándose en información recopilada de diez trabajos, tanto publicados en revistas científicas como en tesis para optar a un grado o titulo universitario, los que cubren desde 1959 a 1987. En el p...
Article
The reduced growth rate of anchovy during winter could be related to spawning time, particularly for adults, and to the downwelling period that tends to occur between early April to late August. -from Authors
Article
Se analiza la situación actual y la evolución de la biomasa presente ("standing stock") de Pleuroncodes monodon en Chile centrosur, bajo perspectivas ecológico-pesqueras. Se estima, específicamente, la ración diaria de este crustáceo en Merluccius gayi e Hippoglossina macrops, a partir de información de los "Cruceros Langostino" de marzo y noviembr...

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