Fatty acid composition and age estimation of wild Octopus vulgaris paralarvae

Garrido, Diego; Navarro, Juan Carlos; Perales-Raya, C.; Nande, Manuel; Martín, M.V.; Iglesias, J.; Bartolomé, Aurora; Roura, Álvaro; Varó, Inma; Otero, Juan José; González, Ángel F.; Rodrı́guez, Covadonga; Almansa, E.

doi:10.1016/j.aquaculture.2016.07.034

Cited by 28 publications

(36 citation statements)

References 34 publications

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“…1a). The higher PUFA content in the ovary of mature animals is expected given it is essential for egg and larval quality 35,44,45 . However, no individual fatty acid in the ovary differed significantly between animals at different maturity stages (Supplementary Tables 1 and 5).…”

Section: Resultsmentioning

confidence: 99%

The breeding strategy of female jumbo squid Dosidicus gigas: energy acquisition and allocation

Chen

Han

Zhu

et al. 2020

Sci Rep

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Reproductive investment generally involves a trade-off between somatic growth and energy allocation for reproduction. Previous studies have inferred that jumbo squid Dosidicus gigas support growth during maturation through continuous feeding (an "income" source). However, our recent work suggests possible remobilization of soma during maturation (a "capital" source). We used fatty acids as biochemical indicators to investigate energy acquisition and allocation to reproduction for female D. gigas. We compared the fatty acid profiles of the ovary to those of the mantle muscle (slow turnover rate tissue, representing an energy reserve) and the digestive gland (fast turnover rate organ, reflecting recent consumption). For each tissue, the overall fatty acids among maturity stages overlapped and were similar. The changes with maturation in fatty acid composition in the ovary consistently resembled those of the digestive gland, with the similarity of fatty acids in the mantle muscle and the ovary increasing during maturation, indicating some energy reserves were utilized. Additionally, squid maintained body condition during maturation regardless of increasing investment in reproduction and a decline in feeding intensity. Cumulatively, D. gigas adopt a mixed income-capital breeding strategy in that energy for reproduction is mainly derived from direct food intake, but there is limited somatic reserve remobilization. Life-history theory predicts that individuals should trade-off energy allocation between reproduction and somatic growth or even survival to maximize lifetime reproductive success 1. Squids are characterized by short lifespan, fast growth and considerable flexibility in reproductive characteristics 2,3. Although reproduction is typically semelparous, some species spawn multiple times and others continuously 2 , and reproductive behavior relates to how energy is allocated to reproduction during maturation 4-7. For example, the deep-sea squid Onykia ingens reduces somatic growth by utilizing mantle muscle as an energy source to fuel reproduction, which then results in ovarian development for a terminal spawning event 6. In contrast, the purpleback squid Sthenoteuthis oualaniensis apparently supports reproduction using energy acquired directly from food intake, leading to multiple spawning events and continuous growth before death 4. The former is referred to as a capital breeder, and the latter as an income breeder 8. Since how energy is allocated during life is central to life-history theory 1 , an optimal trade-off between investment in reproduction and somatic growth has been found to maximize reproductive success, and ultimately determine population size and stability over time 9-11. The jumbo squid, Dosidicus gigas is one of the most abundant nektonic squid in the eastern Pacific 12 , as well as the target species of major cephalopod fisheries 13. It plays an important role in pelagic ecosystems locally 14 , not only because it preys on a wide spectrum of organisms during ontogenesis, but also because it ...

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Section: Resultsmentioning

confidence: 99%

The breeding strategy of female jumbo squid Dosidicus gigas: energy acquisition and allocation

Chen

Han

Zhu

et al. 2020

Sci Rep

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“…In recent years, major efforts have been conducted to understand the nutritional needs for paralarvae in captivity (Garrido et al, 2016b) and their fatty acid profile in the wild (Estefanell et al, 2013; Garrido et al, 2016a), however the nutritional link between them and their prey in natural conditions is still largely unknown.…”

Section: Introductionmentioning

confidence: 99%

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

Lourenço¹,

Roura

Fernández‐Reiriz

et al. 2017

Front. Physiol.

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Under the influence of the Western Iberian upwelling system, the Iberian Atlantic coast holds important hatcheries and recruitment areas for Octopus vulgaris. Recently identified as an octopus hatchery, the Ría de Vigo harbors an important mesozooplankton community that supports O. vulgaris paralarvae during the first days of their planktonic stage. This study represents a preliminary approach to determine the nutritional link between wild O. vulgaris hatchlings, paralarvae and their zooplankton prey in the Ría de Vigo, by analyzing their lipid class content and fatty acid profiles. The results show that octopus hatchlings are richer in structural lipids as phospholipids and cholesterol, while the zooplankton is richer in reserve lipids like triacylglycerol and waxes. Zooplankton samples are also particularly rich in C18:1n9 and 22:6n3 (DHA), that seem to be successfully incorporated by O. vulgaris paralarvae thus resulting in a distinct fatty acid profile to that of the hatchlings. On the other hand, content in C20:4n6 (ARA) is maintained high through development, even though the zooplankton is apparently poorer in this essential fatty acid, confirming its importance for the development of O. vulgaris paralarvae. The content in monounsaturated fatty acids, particularly C18:1n7, and the DHA: EPA ratio are suggested as trophic markers of the diet of O. vulgaris paralarvae.

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“…; Garrido et al . ). Under culture, paralarval development is associated to a decline in long‐chain polyunsaturated FA paralleled by an increase in linolenic acid (18: 3n‐3), which is very abundant in certain types of Artemia , and accumulates preferably in their neutral lipids (Viciano 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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Fatty acid composition and age estimation of wild Octopus vulgaris paralarvae

Cited by 28 publications

References 34 publications

The breeding strategy of female jumbo squid Dosidicus gigas: energy acquisition and allocation

The breeding strategy of female jumbo squid Dosidicus gigas: energy acquisition and allocation

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

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

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