Feeding Relationship between Octopus vulgaris (Cuvier, 1797) Early Life-Cycle Stages and Their Prey in the Western Iberian Upwelling System: Correlation of Reciprocal Lipid and Fatty Acid Contents

Lourenço, Sílvia; Roura, Álvaro; Fernández‐Reiriz, María José; Narciso, Luı́s; González, Ángel F.

doi:10.3389/fphys.2017.00467

Cited by 14 publications

(12 citation statements)

References 60 publications

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“…Copepods could be used as a possible alternative prey to feed paralarvae, due to its nutritional profile [17]. In fact, copepods are a natural prey of paralarvae [18][19][20][21] and a previous study using co-feeding of copepods (Acartia tonsa Dana, 1849) and Artemia sp. nauplii attained improved survival [16].…”

Section: Introductionmentioning

confidence: 99%

Preliminary Results on Light Conditions Manipulation in Octopus vulgaris (Cuvier, 1797) Paralarval Rearing

Garrido

Reis

Orol

et al. 2017

Fishes

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High paralarvae mortality is a major bottleneck currently hindering the control over the lifecycle of common octopus (Octopus vulgaris Cuvier, 1797). It is believed that this problem might be related to either zoo-technical and/or nutritional aspects. The present paper is focused on the study of different zoo-technical aspects related to light conditions on the rearing of paralarvae, including the effects of polarization in prey ingestion, the use of a blue filter to simulate natural conditions, and the use of focused light to avoid reflections of the rearing tank's walls. In the first experiment, O. vulgaris paralarvae ingestion of Artemia sp. and copepods (Tisbe sp.) was assessed under either normal or polarized light. In the second experiment, the effect of a blue filter with natural light or focused artificial light on growth and mortality was assessed over 15 days of rearing. Ingestion rate was not influenced by light polarization. Nonetheless, a significantly higher ingestion of Artemia sp. with respect to copepods was observed. The blue filter promoted the use of natural light conditions in Octopus paralarval culture, while focused light reduced the collision of the paralarvae against the walls. However, no significant differences were found in paralarval growth nor survival.

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Section: Introductionmentioning

confidence: 99%

Preliminary Results on Light Conditions Manipulation in Octopus vulgaris (Cuvier, 1797) Paralarval Rearing

Garrido

Reis

Orol

et al. 2017

Fishes

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“…; Lourenço et al . ). Under captivity, the massive paralarvae mortalities have hampered its commercial production (Iglesias et al .…”

Section: Current Knowledge On Culturing Early Stagesmentioning

confidence: 97%

“…; Lourenço et al . ). Radio tracer studies show that ARA it is the most efficiently incorporated FA, as well as the least transformed, and its highest content is found in PE rather than PI (as is usual in other species), irrespective of the phospholipid in which it was initially supplied (either PC or PE; Reis et al .…”

Section: Current Knowledge On Culturing Early Stagesmentioning

confidence: 97%

Early life stage bottlenecks of carnivorous molluscs under captivity: a challenge for their farming and contribution to seafood production

Uriarte

Astorga

Navarro

et al. 2018

Reviews in Aquaculture

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This work brings together the view of different specialists in the areas of larviculture, physiology, ecology, nutrition and animal health, regarding how to deal with the aquaculture farming of species with complex life cycles in a multidisciplinary way, using as models the octopus and the muricid C. concholepas, with the aim of reducing the gap between the experimental and the industrial culture of species that are relevant for the diversification of aquaculture, particularly in Chile. Although these species are similar in their difficulty to reach the terminal planktonic phase prior to juvenile, they differ in the bottlenecks they have to overcome to reach it. Relevant aspects of study to achieve juvenile production from early life stages rearing, whether for repopulation or for ongrowing, are as follows: (i) Replacement or supplementation of live diets with inert diets to achieve significant survival values over the first stages of life. (ii) Physiological approaches to establish cultivation conditions evaluating the individual responses to several rearing conditions, specially the interaction between temperature, dissolved oxygen and acidity. Studies of urgent character due to the global warming scenario. (iii) Genomic studies associated with the effect of ontogenetic development, environment, health and nutrition on gene expression to understand, in an integrated way, the key processes for the development and growth of immature stages. (iv) Studies on the control of reproduction, the quality control of the ova, the genetic structure of reproductive populations and the characterization of diseases are also necessary to achieve efficient hatchery technologies.

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“…Many naturally occurring biochemical tracers such as stable isotopes and fatty acids have increased the ability to quantify and characterize complex food webs and community dynamics [24,30,31]. These techniques can assess a predator's dietary history over a range of temporal scales, reflecting "you are what you eat" [32,33].…”

Section: Introductionmentioning

confidence: 99%

Top predator reveals the stability of prey community in the western subarctic Pacific

Lin

Chen

2020

PLoS ONE

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The stability of the ecosystems depends on the dynamics of the prey community, but changes in the composition and abundance of prey species are poorly understood, especially in open ocean ecosystems. We used neon flying squid Ommastrephes bartramii, an active top predator, as a biological sampler to investigate the dynamics of the prey community in the southwestern part of the Western Subarctic Gyre in the northwestern Pacific Ocean. Squid were collected monthly from July to November 2016. There were no significant differences among months in stable isotopes (δ 13 C and δ 15 N) in the digestive gland, a fast turnover organ reflecting recent dietary information. Similar findings were obtained from analyses of isotopic niche width and fatty acid profiles. The potential influence of the environment (monthly mean sea surface temperature, SST, and chlorophyll-a, Chl-a) on the prey community was examined with SST and Chl-a both varying significantly among sampling months. We found little evidence for significant effects of SST and Chl-a on the isotopic values, nor on the fatty acid profiles except for 20:4n6 and 24:1n9. These lines of evidence indicate that the prey community in the southwestern part of the gyre remains stable, with little evidence for systematic changes at the community level. This study provides a novel understanding of the dynamics of the prey community and highlights the use of top predators to study the trophic dynamics of an oceanic system where a long-term scientific survey is unavailable.

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Feeding Relationship between Octopus vulgaris (Cuvier, 1797) Early Life-Cycle Stages and Their Prey in the Western Iberian Upwelling System: Correlation of Reciprocal Lipid and Fatty Acid Contents

Cited by 14 publications

References 60 publications

Preliminary Results on Light Conditions Manipulation in Octopus vulgaris (Cuvier, 1797) Paralarval Rearing

Preliminary Results on Light Conditions Manipulation in Octopus vulgaris (Cuvier, 1797) Paralarval Rearing

Early life stage bottlenecks of carnivorous molluscs under captivity: a challenge for their farming and contribution to seafood production

Top predator reveals the stability of prey community in the western subarctic Pacific

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