Feeding habits and diet overlap of marine fish larvae from the peri-Antarctic Magellan region

Salas-Berrios, Franco; Valdés-Aguilera, Javiera; Landaeta, Mauricio F.; Bustos, Carlos; Pérez-Vargas, Alfredo; Balbontín, Fernando

doi:10.1007/s00300-013-1359-8

Cited by 16 publications

(15 citation statements)

References 42 publications

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“…Larval A. variolosus collected at mid‐latitude (~34°S) showed high levels of feeding incidence, being almost 100%, like several marine fish larvae from the tropics and low latitudes (Llopiz and Cowen, ; Llopiz, ). This contrasts with the low feeding incidence detected in larvae having a straight gut, such as anchovies, sardines (~20–30%, Morote et al., ; Landaeta et al., ) and smelts (~27%, Salas‐Berríos et al., ). The high level of feeding incidence may be attributable to an early pigmentation of the eyes in that the smallest larva has both pigmented eyes as well as prey in its gut.…”

Section: Discussionmentioning

confidence: 91%

Diet of labrisomid blennyAuchenionchus variolosus(Valenciennes, 1836) (Labrisomidae) during its larval development off central Chile (2012-2013)

Vera‐Duarte

Landaeta

2015

J. Appl. Ichthyol.

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Summary The diet, feeding success (prey number and total volume per gut, and maximum prey width) and trophic niche width of the labrisomid blenny Auchenionchus variolosus (Valenciennes, 1836) was studied during its larval development (3.93–17.26 mm standard length). Individuals were collected in October 2012 and October 2013 in nearshore waters (<500 m offshore) from Bahía Valparaíso, central Chile with Bongo nets. When compared to the same length range, larval A. variolosus collected during 2013 showed larger upper jaw‐at‐sizes than those from 2012. This coincided with a reduction in relative importance (%IRI) of the main prey item, copepod nauplii, from ~90 to ~73%. Feeding incidence (FI) was high throughout larval development, varying from 97.3 to 100%, being similar throughout the larval development. Prey items per gut (PIPG) ranged from 0 to 35 prey, showing no differences among years. Total volume per gut (TVPG) was positively correlated with larval length, and at given larval size, TVPG ingested by larval A. variolosus was larger during 2013 (0.0607 mm3) than during 2012 (0.0301 mm3). Prey width range was 47.47–700.94 μm and was positively correlated with standard length (SL). Niche breadth was independent of larval size and did not change during larval development in 2012 or 2013. The study helps to understand the trophic interactions occurring in nearshore waters off rocky reef environments from mid‐latitudes of the Southeast Pacific coasts.

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Section: Discussionmentioning

confidence: 91%

Diet of labrisomid blennyAuchenionchus variolosus(Valenciennes, 1836) (Labrisomidae) during its larval development off central Chile (2012-2013)

Vera‐Duarte

Landaeta

2015

J. Appl. Ichthyol.

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“…For SIA of fish larvae, specimens were selected and classified into size groups by upper jaw length ( L UJ ) as an indicator of mouth size (Salas‐Berrios et al ., ). Larvae were divided into four groups: yolk‐sac stage larvae with no visible mouth, small, medium and large mouth.…”

Section: Methodsmentioning

confidence: 97%

Fish larvae distribution among different habitats in coastal East Africa

Hedberg

Rybak

Gullström

et al. 2019

Journal of Fish Biology

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Funding informationThis study was financed and made possible through the minor field studies project organized by the Swedish International Development Cooperation Agency (Sida). Fish larvae abundances, diversity and trophic position across shallow seagrass, coral reef and open water habitats were examined to characterize their distribution in coastal East Africa. Larvae were identified to family and analysed for abundance differences between sites and habitats, trophic level using stable-isotope analysis and parental spawning mode. Abundances differed greatly between sites with the highest numbers of larvae occurring in the open-water and seagrass habitats. Larval fish diversity was high across habitats with 51 families identified with small differences between sites and among habitats. Notably, larvae of abundant large herbivorous fishes present in reef and seagrass habitats were almost completely absent at all sampling locations. In the seagrass, demersal spawned larvae were more abundant compared with the reef and open-water habitats. Stable-isotope analysis revealed that fish larvae have a varied diet, occupying trophic level two to three and utilizing planktonic prey. This study offers new insights into distributional aspects of fish larvae along the East African coast where such information is sparse. K E Y W O R D S coral reef, fish larvae, seagrass, spawning mode, trophic position, western Indian Ocean

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“…With some exceptions [ Merluccius merluccius (L. 1758) (Morote et al ., ), Maurolicus parvipinnis Vaillant 1888 (Landaeta et al ., ), Patagonotothen tessellata (Richardson 1845) (Salas‐Berríos et al ., )], most of the fish larvae are diel feeders ( e.g ., Auxis rochei (Risso 1810) (Morote et al ., )). Larval G. marmoratus seems to feed also during night‐time, taking into account that digested remains were less than 23% of occurrence in the guts.…”

Section: Discussionmentioning

confidence: 99%

“…Most of the fish larvae are visual predators (Blaxter, ; Utne‐Palm, ). Nonetheless, some fish larval species can feed at night (Gehrke, ; Salas‐Berríos et al ., ; Voss et al ., ) and therefore, the increased illuminated hours during full moon may have positive effects on larval fish feeding. Lima and Barletta () described that anchovy (Engraulidae) larvae from mangrove creeks vary their ingested prey items as well as their prey diversity by moon phase.…”

Section: Introductionmentioning

confidence: 98%

Lunar influences in the diet habits and selectivity of larval clingfish Gobiesox marmoratus

Ríos‐Méndez

Kanamori

Landaeta

2019

Journal of Fish Biology

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The influence of the lunar cycle on the feeding habits, feeding success and selectivity was tested in situ on larval stages of the clingfish Gobiesox marmoratus (Gobiesocidae). Gobiesox marmoratus larvae and their prey were collected in the water column during the lunar cycle in austral spring 2015 and 2016, in shallow waters (<30 m depth) of El Quisco, central Chile. Feeding incidence was high (80-100%) throughout the moon cycle. The diet was composed of 32 prey items, being gastropod larvae and invertebrate eggs the most important. Prey composition varied among lunar phases with the lowest prey richness during new moon. During 2016, G. marmoratus larvae ingested the lowest number, but the largest prey during new moon. In spring 2015, there were no significant changes in the abundance of each prey taxon in the water column among moon phases, but in spring 2016 there were significant differences in the abundance of cypris and copepod nauplii, particularly between full and new moon. Feeding selectivity index showed that gastropod larvae were positively selected throughout the lunar cycle during spring 2015. In spring 2016, invertebrate eggs were selectively ingested in full moon and third quarter, but at a new moon G. marmoratus larvae selected gastropod larvae. Mean temperature of the water column and its vertical gradient and nocturnal cloud cover influences the feeding success of larval G. marmoratus. Lunar illumination favoured only an increase of richness of prey items. Therefore, nocturnal cloud cover precludes a greater influence of lunar illumination in the larval trophic ecology of this cryptobenthic fish.

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Feeding habits and diet overlap of marine fish larvae from the peri-Antarctic Magellan region

Cited by 16 publications

References 42 publications

Diet of labrisomid blennyAuchenionchus variolosus(Valenciennes, 1836) (Labrisomidae) during its larval development off central Chile (2012-2013)

Diet of labrisomid blennyAuchenionchus variolosus(Valenciennes, 1836) (Labrisomidae) during its larval development off central Chile (2012-2013)

Fish larvae distribution among different habitats in coastal East Africa

Lunar influences in the diet habits and selectivity of larval clingfish Gobiesox marmoratus

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