Health status of post-spawning Octopus maya (Cephalopoda: Octopodidae) females from Yucatan Peninsula, Mexico

Roumbedakis, Katina; Mascaró, Maité; Martins, Maurício Laterça; Gallardo, Pedro; Rosas, Carlos; Pascual, Cristina

doi:10.1007/s10750-017-3340-y

Cited by 24 publications

(35 citation statements)

References 61 publications

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“…Octopus were individually immersed in cold water (17 • C below the maintenance system temperature) for 2 to 4 min (Cruz-López, 2010;Roumbedakis et al, 2017). When the respiratory rate and locomotor activity decreased, the animals were removed, and hemolymph was drawn from the aorta with a sterile catheter-cold connected to a 5 mL Falcon tube (Cruz-López, 2010).…”

Section: Tissues Samples and Plasma Analysesmentioning

confidence: 99%

“…The hemolymph was diluted into 1:100 using distilled water and measured at 335 nm (Thermo-Genesys 10 uv) and hemocyanin concentration (mM L −1 ) was determined using an extinction coefficient of 17.26 (Chen and Cheng, 1993a,b). Total hemocytes were counted in a Neubauer chamber from the hemolymph aliquot fixed with 4% formaldehyde in Alsever solution (115 mM C 6 H 12 O 6 , 30 mM Na 3 C 6 H 5 O 7 , 338 mM NaCl, 10 mM EDTA.Na 2 , pH 7.0) with a 1:3 dilution (Roumbedakis et al, 2017). Samples were kept at 2-8 • C, for a maximum period of 10 days before analysis.…”

Section: Tissues Samples and Plasma Analysesmentioning

confidence: 99%

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Changes in Biochemical Composition and Energy Reserves Associated With Sexual Maturation of Octopus maya

et al. 2020

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Climate conditions are related to changes in the biochemical composition of several tissues and associated to the processes of growth and sexual development in cephalopods. The biochemical composition (protein, glucose, cholesterol, acylglycerides) and hemocytes of the hemolymph, the hepatosomatic and gonadosomatic indices, and the reserves of the gonad, hepatopancreas and muscle (lipids, glycogen, and caloric value of muscle) of Octopus maya were determined and related to sex and season. A total of 154 wild animals were used (≈50 caught per season) and the multivariate analysis of the biochemical indicators of the tissues allowed following the variations during winter, dry and rainy season. The permutational MANOVA showed that both sex and season contributed significantly to variations in metabolites and energy reserves. However, the non-significant interaction term indicated that the biochemical composition changed with the seasons in a similar way and regardless of sex. The pattern observed in metabolites and reserves indicates a variation associated with growth and the reproductive peak, but may also reflect a physiological response to seawater temperature. The present study provides reference values for several physiological indicators in O. maya that may be useful for programs monitoring wild populations, as well as to design diets and management protocols to produce octopus under controlled conditions.

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Section: Tissues Samples and Plasma Analysesmentioning

confidence: 99%

Section: Tissues Samples and Plasma Analysesmentioning

confidence: 99%

Changes in Biochemical Composition and Energy Reserves Associated With Sexual Maturation of Octopus maya

et al. 2020

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“…During the late functional maturation, an increment of glycogen was registered in the ovarium. This suggests that those molecules were directly stored in the eggs used as a source of energy during embryo development and/or to maintain the physiological integrity of females during parental care that occurs after the spawning (Roumbedakis et al 2017).…”

Section: Discussionmentioning

confidence: 99%

“…Octopus maya females fed with mixed diets produced yolk of higher quality, allowing hatchlings a better performance during the first days of culture compared with hatchlings from females fed with mono-diet. In addition, nutrition influences the health condition of O. maya females and determined the capacity of the animals to maintain their physiological integrity during the post-spawning period (Caamal-Monsreal et al 2015; Tercero-Iglesias et al 2015), when females require enough energy to protect the spawn during the embryo development (Roumbedakis et al 2017). A mixed maternal diet resulted in more hatchlings from O. vulgaris females than from females fed with mono-diet (only crabs) (Márquez et al 2013).…”

Section: Introductionmentioning

confidence: 99%

Sexual maturation and embryonic development in octopus: use of energy and antioxidant defence mechanisms usingOctopus mimusas a model

Olivares¹,

Rodrı́guez-Fuentes²,

Mascaró³

et al. 2018

Preprint

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Sexual maturation and reproduction influence the status of a number of physiological processes and consequently the ecology and behaviour of cephalopods. Using Octopus mimus as model species, the present study examined the changes in biochemical composition that take place during gonadal maturation of octopus females and its consequences in embryo and hatchlings characteristics, including energetic metabolites, digestive enzymes and antioxidant defence mechanisms. A total of 32 Octopus mimus adult females were sampled during ovarian maturation; biochemical composition (metabolites and digestive enzymes) of digestive gland (DG) and ovaries (only metabolites) were followed during physiological and functional maturation. Levels of protein (Prot), triacyl glycerol (TG), cholesterol (Chol), glucose (Glu) and glycogen (Gly) were evaluated. The activity of alkaline and acidic enzymes also was measured in DG. Simultaneously, groups of eggs coming from mature females were sampled along development, and metabolites (Prot, TG, Glu, Gly, TG, Chol), digestive enzymes activity (Lipases, alkaline and acidic), antioxidant defence mechanisms and radical oxygen species (ROS) were evaluated. This study shows that ovarium is a site for reserve of some nutrients for reproduction. Presumably, TG where stored at the beginning of the maturation processes followed by Chol, both at the same time were energetically supported by Glu, derived from Gly following gluconeogenic pathways. Nutrients and enzymes (metabolic, digestive and REDOX system) where maintained without significant changes and in a low activity during organogenesis. Our findings suggest that activity was not energetically costly; in contrast, during the embryo growth there was mobilization of nutrients and activation of the metabolic and digestive enzymes. Increments in consumption of yolk and glycogen, and reduction in molecules associated with oxidative stress allowed paralarvae to hatch with the antioxidant defence mechanisms ready to support ROS production.

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“…The larger sized consort males, in contrast, are shown to attach (near the oviductal apertures) much larger, hooked spermatangia, containing a large ejaculate of spermatozoa much smaller in both head and flagellum length than those of the sneakers. Roumbedakis et al (2017) have looked closely at what happens after female octopuses lay their eggs and enter the final phase of their life, when they stop eating to devote themselves to the vital tasks of guarding, cleaning and ensuring maximal oxygenation of their eggs until they hatch. Octopus maya Voss & Solis, 1966, females are shown to be well adapted to live off the storage reserves in their body muscle and digestive gland, maintaining adequate health in terms of both physiological and immunological integrity for up to 40 days during this critical but programmed period of prolonged starvation.…”

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confidence: 99%

Preface: Recent advances in knowledge of the life of cephalopods

Gleadall

Moltschaniwskyj²,

Vidal³

2018

Hydrobiologia

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Nine papers comprising this special section of Hydrobiologia on cephalopod molluscs are introduced. These papers are a selection of those submitted following the CIAC 2015 conference held in Hakodate, Hokkaido, Japan, during 6-14 November, 2015.Keywords Cephalopoda Á Spermatangia ejaculate and male strategies for squid mating Á Female octopus starvation and health during brooding Á Sepia officinalis Hoyle's organ autophagy Á Sepiolid paralarva morphology COI and identification Á Body fluid osmolality osmoconforming Á Effects of ocean acidification on paralarval swimming behaviour Á

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Health status of post-spawning Octopus maya (Cephalopoda: Octopodidae) females from Yucatan Peninsula, Mexico

Cited by 24 publications

References 61 publications

Changes in Biochemical Composition and Energy Reserves Associated With Sexual Maturation of Octopus maya

Changes in Biochemical Composition and Energy Reserves Associated With Sexual Maturation of Octopus maya

Sexual maturation and embryonic development in octopus: use of energy and antioxidant defence mechanisms usingOctopus mimusas a model

Preface: Recent advances in knowledge of the life of cephalopods

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