Reproductive traits of<i>Octopus maya</i>(Cephalopoda: Octopoda) with implications for fisheries management

Avila-Poveda, Omar Hernando; Koueta, Noussithé; Benítez‐Villalobos, Francisco; Santos-Valencia, Josefina; Rosas, Carlos

doi:10.1080/13235818.2015.1072912

Cited by 27 publications

(24 citation statements)

References 46 publications

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“…At a semi-pilot scale, this feed protocol has been followed for more than 5 years (Rosas et al, 2014); adults of O. maya were fed every 8 h using fresh scraps of marine fish or fresh crab (Caamal-Monsreal et al, 2015) or a diet formulated to stimulate spawning in laboratory conditions (Tercero-Iglesias et al, 2015). Under these conditions the number of eggs spawned was quite similar to those observed in wild spawns (Vidal et al, 2014), indicating that laboratory animals fed every 8 h reach a similar healthy condition to those on the continental shelf of the Yucatán Peninsula, where this species lives (Avila-Poveda et al, 2016; Angeles-Gonzalez et al, 2017). O. maya and O. mimus are well adapted, as are the majority of cephalopod species, to digest a high-quality animal protein diet using a mix of acidic and alkaline enzymes.…”

Section: Octopus Maya and O Mimus Digestive Timingsupporting

confidence: 65%

Digestive Physiology of Octopus maya and O. mimus: Temporality of Digestion and Assimilation Processes

et al. 2017

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Digestive physiology is one of the bottlenecks of octopus aquaculture. Although, there are successful experimentally formulated feeds, knowledge of the digestive physiology of cephalopods is fragmented, and focused mainly on Octopus vulgaris. Considering that the digestive physiology could vary in tropical and sub-tropical species through temperature modulations of the digestive dynamics and nutritional requirements of different organisms, the present review was focused on the digestive physiology timing of Octopus maya and Octopus mimus, two promising aquaculture species living in tropical (22–30°C) and sub-tropical (15–24°C) ecosystems, respectively. We provide a detailed description of how soluble and complex nutrients are digested, absorbed, and assimilated in these species, describing the digestive process and providing insight into how the environment can modulate the digestion and final use of nutrients for these and presumably other octopus species. To date, research on these octopus species has demonstrated that soluble protein and other nutrients flow through the digestive tract to the digestive gland in a similar manner in both species. However, differences in the use of nutrients were noted: in O. mimus, lipids were mobilized faster than protein, while in O. maya, the inverse process was observed, suggesting that lipid mobilization in species that live in relatively colder environments occurs differently to those in tropical ecosystems. Those differences are related to the particular adaptations of animals to their habitat, and indicate that this knowledge is important when formulating feed for octopus species.

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Section: Octopus Maya and O Mimus Digestive Timingsupporting

confidence: 65%

Digestive Physiology of Octopus maya and O. mimus: Temporality of Digestion and Assimilation Processes

et al. 2017

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“…Early functional maturation stage (Ea Fun Mat), was recognized from females with eggs in the reproductive coelom and with OvwI > 2. Late functional maturation stage (La Func Mat), was obtained from females close to spawn (Arkhipkin, 1992; Avila-Poveda et al ., 2016; Olivares et al ., 2017). RSWI = reproductive system index; OvwI = ovarium Index.…”

Section: Resultsmentioning

confidence: 99%

“…The increment of TG observed after the maturation processes started, and the subsequent reduction of cholesterol suggest that cholesterol was required during the physiological maturation (oocytes growth), probably as a structural component into the oocytes membranes. This process is characterized at the beginning by the formation of oocytes, which after growth will be transformed in secondary oocytes surrounded by the follicle cells without yolk (Avila-Poveda et al 2016). It is highly likely that the oocytes and follicle cells synthesis require cholesterol during this process because it is an essential component of the biological membranes (Zubay 1983).…”

Section: Discussionmentioning

confidence: 99%

“…Maturating females were classified in three categories: 1) physiological maturation (Phys Mat; n = 4), 2) early functional maturation (Ea Func Mat; n = 6), and 3) late functional maturation (La Func Mat; n = 5). Phys Mat animals were at initial vitelogenesis (stage III of ovocytes), Ea Func Mat were females with eggs in the reproductive coeloma and La Func Mat were females with eggs at the end of the maturation process (Avila-Poveda et al 2016; Olivares et al 2017). To classify maturing females, preserved (formalin, pH 7), ovarium samples (one per each sampled female, n= 23) were cut at the middle level in transverse and longitudinal sections.…”

Section: Methodsmentioning

confidence: 99%

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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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“…For each octopus, dorsal mantle length and wet body weight were measured to the nearest 0.5 cm and 0.1 g, respectively (Table 1). Host sex was identified by direct observation of the reproductive organs by dissection and maturity (juvenile or mature) was assessed following Avila-Poveda et al (2016): males and females were considered sexually mature at 242 and 335 g of wet body weight, respectively (Table 1).…”

Section: Methodsmentioning

confidence: 99%

Two new species of dicyemid mesozoans (Dicyemida: Dicyemidae) from Octopus maya Voss & Solis-Ramirez (Octopodidae) off Yucatan, Mexico

Castellanos-Martínez¹,

Aguirre-Macedo

Furuya

2016

Syst Parasitol

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Two new dicyemid species are described from the endemic cephalopod Octopus maya Voss & Solis-Ramirez collected off Yucatan, Mexico. The renal sacs of 40 juvenile and adult octopuses from four localities were examined. Dicyema hochbergi n. sp. is a medium-sized species that reaches 2,245 µm in length. The vermiform stages consist of 18-24 peripheral cells, a conical calotte and the extension of the axial cell between the base and middle of the metapolar cells. Infusoriform embryos consist of 39 cells with urn cell containing one germinal cell, two nuclei and solid refringent bodies. Dicyema mexcayae n. sp. is a relatively small species that reaches 1,114 µm in length. The vermiform stages are constituted by 14-16 peripheral cells, an elongate calotte and the axial cell extending forward to the middle of the metapolar cells. The infusoriform embryos consist of 37 cells, two solid refringent bodies and urn cells with two nuclei each. The present study represents the first description of a dicyemid species from O. maya and increases the number of described species from Mexican waters to 11.

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Reproductive traits ofOctopus maya(Cephalopoda: Octopoda) with implications for fisheries management

Cited by 27 publications

References 46 publications

Digestive Physiology of Octopus maya and O. mimus: Temporality of Digestion and Assimilation Processes

Digestive Physiology of Octopus maya and O. mimus: Temporality of Digestion and Assimilation Processes

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

Two new species of dicyemid mesozoans (Dicyemida: Dicyemidae) from Octopus maya Voss & Solis-Ramirez (Octopodidae) off Yucatan, Mexico

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