Geographic, population, and seasonal patterns in the reproductive parameters of the sea urchin Paracentrotus lividus

Ouréns, Rosana; Fernández, Luis; Freire, Juan

doi:10.1007/s00227-010-1607-1

Cited by 51 publications

(40 citation statements)

References 38 publications

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“…A total of 117 wild sea urchins P. lividus were collected haphazardly, by hand, in Praia do Abalo (Peniche, Portugal; 39°22’12.69”N; 009°23'7.07"W). Animals with a test diameter >3 cm were selected, to avoid the presence of juveniles (Ouréns, Fernández, & Freire, ). They were transported to the Aquaculture Laboratory of MARE—Marine and Environmental Sciences Centre of the Polytechnic Institute of Leiria.…”

Section: Methodsmentioning

confidence: 99%

Effect of three diets on the gametogenic development and fatty acid profile of Paracentrotus lividus (Lamarck, 1816) gonads

et al. 2019

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In this study, the effects of three diets were investigated to enhance Paracentrotus lividus production for commercial purposes. P. lividus were fed ad libitum for 80 days with: diet A—fresh Codium tomentosum Stackhouse, 1797; diet B—formulated using a jellified mix of macroalgae and vegetables, including C. tomentosum (20%), Coralina sp. Linnaeus, 1758 (17%), cabbage Brassica oleracea var. capitata Linnaeus, 1753 (30%), carrot Daucus carota Linnaeus, 1753 (30%) and agar (3%) as a gelling agent. Diet C consisted of maize Zea mays Linnaeus, 1753 (56%) and New Zealand spinach Tetragonia tetragonoides (Pallas, 1781) Kuntze, 1891 (44%). Their effects on the gonadal and somatic growths, gonadosomatic index (GI) and gametogenesis were evaluated, as well as on the total lipid content and fatty acid composition of sea urchin's gonads. Diet A provided high values of eicosapentaenoic acid (EPA). Gonads of sea urchins fed with diet A were found mostly in growth and maturation stages of gametogenesis and showed the lowest lipid content. Sea urchins fed with diet B presented their gonads in the reabsorption stage and had the highest values of omega‐3 polyunsaturated fatty acids (PUFAs). Sea urchins fed with diet C were in the early stages of gametogenesis and had the highest values of lipid content, plus omega‐6 PUFAs. Once as an ingredient in a balanced mix with vegetables, C. tomentosum can be a key factor to the development of new promising high‐quality and low‐cost feed for P. lividus roe enhancement.

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Section: Methodsmentioning

confidence: 99%

Effect of three diets on the gametogenic development and fatty acid profile of Paracentrotus lividus (Lamarck, 1816) gonads

et al. 2019

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“…Linear dimensions are also used to represent body size, such as the body length or diameter (see revisions of Gurney & Mundy 2004, González-Irusta 2009, Ebert et al 2010, Ouréns et al 2011. The measurements chosen to represent both the sizes and the relationship established between them, which may or may not include some exponent in the ratio, give rise to a variety of GIs.…”

Section: Abstract: Gonad Index · Reproduction · Allometry · Size Effmentioning

confidence: 99%

Definition of a new unbiased gonad index for aquatic invertebrates and fish: its application to the sea urchin Paracentrotus lividus

Ouréns

Freire²,

Fernández³

2012

Aquat. Biol.

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“…Although the variations in the GI are not strictly related to reproduction, the gonad index is an indicator that can be easily estimated, and thus allows us to define the reproductive cycle of sea urchin with some measure of accuracy (Ouréns et al . ). As regards possible habitat segregations, there is no evidence that P. lividus inhabiting one given habitat cannot migrate to another one.…”

Section: Discussionmentioning

confidence: 97%

“…As regards the gonad index, results showed that it is affected by habitat and not by site, as habitat has indeed been recognized as an important factor in the gonad growth of Mediterranean populations (Ouréns et al . ). Although in vitro experiments have shown that an increase in the gonad index occurs when food availability is high (Lawrence et al .…”

Section: Discussionmentioning

confidence: 97%

Effect of two different habitats on spine and gonad colour in the purple sea urchin Paracentrotus lividus

2014

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This study investigates the effect of different Mediterranean habitats on spine and gonad colouring and gonadal index in the purple sea urchin Paracentrotus lividus (Echinodermata: Echinoidea). Specimens were collected in winter 2012 in Posidonia oceanica meadows and rocky bottom areas at two sites in Southern Sardinia (Italy, Tyrrhenian Sea). Colorimetric analyses of spines and gonads were conducted with a digital colorimeter using CIELAB colour spaces, which defines the colour in terms of three coordinate values: lightness (L*), redness (a*) and yellowness (b*). Lightness and redness of the spines differed significantly between habitats, whereas colour spaces of the gonads did not. A careful analysis of the gonad index showed it to be significantly affected by habitat, registering higher values in rocky bottom locations. In conclusion, it seems that habitat does affect spine colour but not gonad colour. Spine colour seems to be site‐dependent, whereas the gonad index depends solely on the habitat.

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Geographic, population, and seasonal patterns in the reproductive parameters of the sea urchin Paracentrotus lividus

Cited by 51 publications

References 38 publications

Effect of three diets on the gametogenic development and fatty acid profile of Paracentrotus lividus (Lamarck, 1816) gonads

Effect of three diets on the gametogenic development and fatty acid profile of Paracentrotus lividus (Lamarck, 1816) gonads

Definition of a new unbiased gonad index for aquatic invertebrates and fish: its application to the sea urchin Paracentrotus lividus

Effect of two different habitats on spine and gonad colour in the purple sea urchin Paracentrotus lividus

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