Geometric morphometrics and internal anatomy in sea bass shape analysis (Dicentrarchus labrax L., Moronidae)

Loy, Angelo; Boglione, Clara; Gagliardi, F.; Ferrucci, Luigi; Cataudella, Stefano

doi:10.1016/s0044-8486(99)00366-x

Cited by 42 publications

(35 citation statements)

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“…Accordingly, Corti et al (1996) found significant differences in sea bass (Dicentrarchus labrax) shape after its acclimation to freshwater. From an anatomical point of view, external shape is related to internal skeletal anomalies (Loy et al 2000). Likewise, Loy et al (1999) demonstrated that the effects of different larval and postlarval rearing condition on external morphology could be detected in juveniles and adults of sea bream (Sparus aurata).…”

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confidence: 99%

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Stocking density and its influence on shape of Senegalese sole adults

et al. 2007

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Morphological changes in Senegalese sole adults (Solea senegalensis; Kaup 1858) reared at two stocking density conditions (low stocking density, 60% of bottom occupation and high stocking density, 180% of bottom occupation) were investigated using geometric morphometrics. Canonical variate analysis on weight matrix scores, including the uniform component (W'), at the end of the experiment revealed differences in body shape between experimental groups. Low density group presented a similar change pattern to High density group but less intense. Differences were discussed in terms of the effect of a high stocking density on the shape of soles which were very close to commercialization. Results did not indicate a significant size-related shape, likely due to fish age.Our results provide a first promising insight in the study of environment-related shape changes in reared sole.

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confidence: 99%

“…All configurations are scaled according to a size measured known as centroid size. Centroid size is removed from the analysis of shape (Loy et al 2000). Procustes residuals are the outcome shape variables which remain after isometric alignment of the shapes being compared.…”

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Stocking density and its influence on shape of Senegalese sole adults

et al. 2007

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“…A rounding of the head, a prominent ventral profile and a characteristic bending of the caudal region have been shown to be associated with lordosis in cultured sea bream (Loy et al 1999a) and sea bass (Loy et al 2000). Sfakianakis et al (2006) analyzed the effects of this deformity on the body shape of juvenile sea bass and demonstrated that the changes were most noticeable in the posterior abdominal region and could be quantified by specific body landmarks (dorsal, pelvic, caudal and anal fins).…”

Section: Discussionmentioning

confidence: 99%

“…In fish, GM has been used in population studies (Haas and McPhail 2001;Valentin et al 2002;Ergüden and Turan 2005;Leinonen et al 2008), analysis of trophic polymorphism (Olsson et al 2007;Svanbäck and Eklöv 2004) biomass estimation (Hockaday et al 2000), evaluation of larvae and fry quality Loy et al 1995;Verhaegen et al 2007), and for the assessment of environmental and genetic effects (Loy et al 1999a,b;Von Cramon-Taubadel et al 2005;Kouttouki et al 2006). Loy et al (2000) indicated that external body morphology of cultured sea bass is an important commercial feature because it can be used as a quality criterion by potential consumers.…”

Section: Introductionmentioning

confidence: 99%

Body shape variation in meiotic gynogenetic and triploid sea bass,Dicentrarchus labrax

Peruzzi

Wiborg-Dahle

Haffray

et al. 2010

Aquat. Living Resour.

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-A method of geometric morphometrics was used to characterize body shape variation in meiotic gynogenetic and triploid sea bass in comparison with diploid controls. A total of 13 coordinate landmark data were recorded on the profile of 34-month-old control (n = 81), gynogenetic (n = 117) and triploid (n = 131) siblings generated from two females (A and B). Three main axes of morphometric variation were consistent, and these accounted for 60.8 and 57.6% of the total variability in females A and B, respectively. There were significant shape deviations of triploid and gynogenetic fish relative to the controls, and differences were particularly evident in the progeny of one female. Overall, triploids displayed a more slender shape than diploids, whereas gynogenetic fish were deeper bodied and had flexed caudal peduncles and cranial features. The results are discussed especially in relation to the characterization of triploid fish for commercial purposes.Key words: Body shape variability / Morphometry / Geometry of Procrustes distance / Triploidy / Gynogenesis / European sea bass / Dicentrarchus labrax Résumé -Nous utilisons la morphométrie géométrique pour caractériser la variation de forme du corps chez des bars gynogènes méiotiques (tous les gènes proviennent de la femelle) et chez des bars triploïdes en comparaison à celle d'individus témoins diploïdes. Les coordonnées de 13 points de repère ont été enregistrés sur les silhouettes d'individus âgés de 34 mois, du groupe témoin (n = 81), des individus gynogènes (n = 117) et des triploïdes (n = 131) d'une même fratrie issue de chacune des deux femelles (A et B). Trois axes principaux de variation morphométrique sont cohérents, et ceux-ci participent à 60,8 et 57,6 % de la variabilité totale chez les femelles A et B, respectivement. Il y a des déviations significatives de forme chez les poissons triploïdes et chez les gynogènes par rapport aux témoins, et les différences sont particulièrement évidentes chez la progéniture d'une femelle. Dans l'ensemble, les triploïdes présentent une forme plus svelte que les diploïdes, tandis que les poissons gynogènes sont plus hauts de corps et ont un pédoncule caudal plus flexible et des marques sur le crâne. Les résultats sont discutés en particulier en relation avec la caractérisation de poissons triploïdes à des fins commerciales.

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“…Tako, od "Revolucije u morfometriji" (Rohlf & Marcus, 1993), pa do očekivanja da postane nova "tradicionalna" morfometrija (Adams et al, 2004), geometrijska morfometrija nalazi primenu u najrazličitijim taksonomskim, ekološkim i evolucionim studijama varijabilnosti veličine i oblika tela (Corti & Croseti, 1996;Loy et al, 1996Loy et al, , 1998Loy et al, , 1999aLoy et al, , 2000aWalker, 1997;Cavalcanti et al, 1999;Sará et al, 1999;Douglas et al, 2001;Rüber & Adams, 2001;Trapani, 2003;Klingenberg et al, 2003;Winans et al, 2003;Kassam et al, 2004;Gray et al, 2005;Nolte & Sheets, 2005;Johansson et al, 2006;Lopes et al, 2006;Collyer et al, 2007;Costa & Cataudella, 2007;Rincón et al, 2007;Maderbacher et al, 2008;Elmer et al, 2010;Hayden et al, 2010;Dornburg et al, 2011), pojedinih telesnih regiona (Loy et al, 1999b;Cavalcanti, 2004;Johansson et al, 2006;Krabbenhoft et al, 2009;Aguilar-Medrano et al, 2011;Dornburg et al, 2011;García-Rodríguez et al, 2011;Parsons et al, 2011;Frédérich et al, 2012), kao i glavenog skeleta riba (Frédérich et al, 2008a,b;…”

Section: Geometrijska Morfometrijaunclassified

Ecological characteristics and morphological-genetic differentiation in populations of European mudminnoow (Umbra krameri Walbaum, 1792) from Ba?ka, Ma?va and Semberija

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Geometric morphometrics and internal anatomy in sea bass shape analysis (Dicentrarchus labrax L., Moronidae)

Cited by 42 publications

References 10 publications

Stocking density and its influence on shape of Senegalese sole adults

Stocking density and its influence on shape of Senegalese sole adults

Body shape variation in meiotic gynogenetic and triploid sea bass,Dicentrarchus labrax

Ecological characteristics and morphological-genetic differentiation in populations of European mudminnoow (Umbra krameri Walbaum, 1792) from Ba?ka, Ma?va and Semberija

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