Temporal fluctuations of nearshore ichthyoplankton off Valparaíso, central Chile, during the ENSO cycle 1997-2000

Landaeta, Mauricio F.; Schrebler, Katherine; Bustos, Carlos; Letelier, Jaime; Balbontín, Fernando

doi:10.4067/s0718-19572009000300005

Cited by 7 publications

(4 citation statements)

References 22 publications

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“…The intrusion of larval lanternfishes into nearshore areas from upwelling zones is not unusual along the Humboldt Current. In northern Chile, larvae of Diogenichthys laternatus , Lampanyctus parvicauda and Triphoturus oculeus (Loeb and Rojas, ; Rojas et al., ; Rodriguez‐Graña and Castro, ; Rodriguez‐Graña et al., ) is frequently collected, while central Chile is dominated by larvae of Hygophum bruuni and Lampanyctus iselinoides (Hernández‐Miranda et al., ; Landaeta et al., , ).…”

Section: Discussionmentioning

confidence: 99%

Larval growth of two species of lanternfish at nearshore waters from an upwelling zone based on otolith microstructure analyses

et al. 2014

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Summary Larval growth and hatching days of lanternfishes Diogenichthys laternatus and Myctophum nitidulum (Myctophidae) collected in September 2012 in nearshore waters (<1 km offshore) at Mejillones Bay, northern Chile, were estimated on the basis of microstructure analyses of sagitta otoliths, to establish potential differences in early traits of both species from the productive coastal waters of the Humboldt Ecosystem. Growth increments were well defined, and no accessory primordia were observed in the analyses of the largest individuals in either species (8.61 and 9.17 mm BL, respectively). Both larval species displayed slow and similar growth rates: 0.057 ± 0.016 mm day−1 for D. laternatus, and 0.061 ± 0.005 mm day−1 for M. nitidulum. A large variability in the size‐at‐age in larvae of both species was detected. However, a recent otolith growth index showed all M. nitidulum in similar condition 5 days before capture, but with three D. laternatus in better condition and only one in a poorer condition than the other D. laternatus individuals. Growth trajectories estimated by the microincrement width of sagitta otoliths, indicated the presence of fast‐ and slow‐growing larvae for both species. Also, the back‐calculated ‘birth’ days suggest a large hatching pulse for D. laternatus near the third‐quarter moon. The small sampling size of M. nitidulum precluded a robust conclusion on hatching patterns, although most individuals were hatched between the third quarter and the new moon. It is suggested that the slow growth rates estimated for both larval species might be caused by cold waters from upwelling events and/or allometric growth during early development of these lanternfish.

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Section: Discussionmentioning

confidence: 99%

Larval growth of two species of lanternfish at nearshore waters from an upwelling zone based on otolith microstructure analyses

et al. 2014

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“…It has carnivorous habits, with a diet mostly composed of copepods and amphipods (Muñoz and Ojeda 1998). Its pelagic larval stages are found throughout the year in nearshore waters (Hernández-Miranda et al 2003, Landaeta et al 2009, 2015, with maximum abundances between October and April (Palacios-Fuentes et al 2014). H. chilensis larvae have a long pelagic larval duration (78-113 days; Mansur et al 2014) given their slow growth rates (~0.15 mm day -1 ; Palacios-Fuentes et al 2014).…”

Section: Model Speciesmentioning

confidence: 99%

Presettlement schooling behaviour of a rocky fish in a shallow area. Is it related to local environmental conditions?

et al. 2020

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This study evaluates the swimming behaviour of pre-settled fish larvae of the triplefin Helcogrammoides chilensis (Tripterygiidae) in relation to local environmental conditions. Larval aggregations were recorded on rocky reefs off central Chile during the austral summer of 2014 and 2016 to describe their swimming behaviour (i.e. solitary, shoaling, schooling) and relate it to in situ water temperature, wind stress, wind speed and turbulence. Shoaling and solitary behaviour were influenced only by wind-induced turbulence in 2014 and by seawater temperature and wind stress in 2016. Schooling behaviour was not influenced by any of the environmental variables. In situ swimming behaviour of fish larvae has been little investigated, and this work proposes a non-invasive in situ methodology for studying fish larval behaviour.

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“…Among other species, Vinciguerria lucetia (Garman) is important for its high abundance of eggs and larvae in areas distant from the northern coast of Chile and Peru (Ayón, ; Ayón & Girón, ; Ayón & Nakazaki, ; Rodríguez & Castro, ). The variability in the distribution and abundance of eggs and larvae in the ocean is determined by several environmental factors, which together with the reproductive behavior of adults determine growth and survival of the early life stages (Bustos, Landaeta, & Balbontín, ; Landaeta, Schrebler, Bustos, Letelier, & Balbontín, ). Many oceanographic processes occur in northern Chile, the variations of which can affect the distribution and abundance of ichthyoplankton, and the intrusion of subtropical water masses close to the coast determine differences in primary productivity and the replacement of zooplankton species (Iriarte & González, ; Rojas et al, ).…”

Section: Introductionmentioning

confidence: 99%

“…The variability in the distribution and abundance of eggs and larvae in the ocean is determined by several environmental factors, which together with the reproductive behavior of adults determine growth and survival of the early life stages (Bustos, Landaeta, & Balbontín, 2008a;Landaeta, Schrebler, Bustos, Letelier, & Balbontín, 2009).…”

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confidence: 99%

Subtropical water influences temporal fluctuations of early life stages of Vinciguerria lucetia (Osteichthyes: Phosichthyidae) in the Humboldt Current System (1998–2004)

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Landaeta

Balbontín

et al. 2019

Fisheries Oceanography

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In the last decades, the fish Vinciguerria lucetia (Garman) has been of important interest to the fisheries sector; nonetheless, the spawning and nursery zones in the Humboldt Current System (HCS) have not yet been defined. By using a temporal series of 23 oceanographic surveys from austral spring of 1998 to autumn 2004 off northern Chile, the spatial and temporal distribution and abundance of eggs and larvae of V. lucetia were studied. The relationships with environmental conditions (sea surface temperature, water column stratification, salinity, dissolved oxygen) were modeled using generalized additive models (GAMs). Seasonal variations in eggs and larval abundances were recorded, and higher abundances were observed in spring and summer, respectively. The main spawning areas were located at approximately between 40 and 80 nautical miles offshore. The largest abundances of V. lucetia eggs were found during spring 2003; however, larval abundances reached the highest values following the strongest ENSO event 1997–98. GAMs predicted that offshore location, sea surface temperature, and the deepening of the oxygen minimum zone, characteristics of the subtropical waters (22–24°C, >34.9, 3–6 ml/L) drove eggs and larval distributions of V. lucetia in the HCS during 1998–2004, toward areas with scarce food availability for larvae. These results suggest that spawning and larval development of this oceanic species occur in oligotrophic waters as a loophole strategy, in order to reduce predation risk during early life stages.

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Temporal fluctuations of nearshore ichthyoplankton off Valparaíso, central Chile, during the ENSO cycle 1997-2000

Cited by 7 publications

References 22 publications

Larval growth of two species of lanternfish at nearshore waters from an upwelling zone based on otolith microstructure analyses

Larval growth of two species of lanternfish at nearshore waters from an upwelling zone based on otolith microstructure analyses

Presettlement schooling behaviour of a rocky fish in a shallow area. Is it related to local environmental conditions?

Subtropical water influences temporal fluctuations of early life stages of Vinciguerria lucetia (Osteichthyes: Phosichthyidae) in the Humboldt Current System (1998–2004)

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