Serum cholesterol and triglyceride levels in <i>Scyliorhinus canicula</i> (L.) during sexual maturation

García-Garrido, Lina; Muñoz‐Chápuli, Ramón; Andrés, A. Victoria De

doi:10.1111/j.1095-8649.1990.tb03552.x

Cited by 42 publications

(31 citation statements)

References 17 publications

(14 reference statements)

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“…Detailed comparisons of the lipid concentrations between sexes and reproductive stages have been published elsewhere. 26 Correlation coefficients showed no significant statistical relation between these parameters and both incidence and lesion severity indexes ( Table 2).…”

Section: Triglyceridemia and Cholesterolemia (Total And Hdl-related)mentioning

confidence: 96%

Coronary arteriosclerosis in dogfish (Scyliorhinus canicula). An assessment of some potential risk factors.

García-Garrido

Muñoz‐Chápuli

Andrés

1993

Arterioscler Thromb

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Coronary myointimal lesions are described in the dogfish (Scyliorhinus canicula). These lesions are similar to those previously described in salmonids and are characterized by breaks in and disappearance of the inner elastic layer and intimal thickening as a result of inclusions of fibers and smooth muscle cells. Lesions are associated with all the branching points in the main subepicardial conal coronary arteries that supply the heart Intimal thickenings were rare in other parts of these arteries. However, we found extensive lesions unassociated with branching points in two main intramyocardial ventricular arteries that supply the ventricular spongy myocardium. We carried out a statistical study of the incidence and severity of these intramyocardial lesions in relation to several potential risk factors. Intimal thickenings were present in 90.5% of the fish specimens and 40% of the histological sections. Sex, reproductive stage, plasma triacylglycerol, and cholesterol (total and related to high-density lipoproteins) were not significantly related to either the incidence or severity of lesions. Total fish length was significantly correlated with the lesion severity index (r=0J3,p<0.01). We also found significant differences in incidence related to the location of lesions. The middle areas of the intramyocardial branches, very close to the atrioventricular canal, were more affected than the cranial and caudal areas. The dorsal and ventral artery walls were also more affected than the lateral ones. The preferential location of the lesions in areas presumably subjected to mechanical stress because of a bifurcating bloodstream or the pulsatile flow throughout the atrioventricular canal suggests that coronary arteriosclerosis in dogfish is an age-related process, with hemodynamic factors playing a primary or secondary pathogenetic role. This disease seems not to be related to some factors suggested for salmonids, such as reproductive cycle, anadromous migration, river pollution, or plasma lipid concentration. Several pathogenetic factors have been suggested. Since this disease was discovered and extensively studied in salmonids, physiological stress related to anadromous migration involving increased plasma 17-hydroxycorticosteroids has been proposed as a main causal Received June 11, 1992; revision accepted February 25, 1993. mechanism. 111 Other factors associated with developing coronary arteriosclerosis are alteration in sex hormone status during maturation, 712 environmental mutagens and poisons, 89 and high levels of apolipoprotein B (apo B)-containing lipoprotein, either spontaneous 13 or induced by diet. 1415 It is uncertain whether some of these associations can be considered cause-and-effect relations.Hemodynamic factors have only recently been considered in fish coronary arteriosclerosis. The reported absence of coronary arterial lesions in five species of elasmobranchs in relation to their high prevalence in salmonids has been attributed to the mechanical stress produced in the coronary artery of the ...

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Section: Triglyceridemia and Cholesterolemia (Total And Hdl-related)mentioning

confidence: 96%

Coronary arteriosclerosis in dogfish (Scyliorhinus canicula). An assessment of some potential risk factors.

García-Garrido

Muñoz‐Chápuli

Andrés

1993

Arterioscler Thromb

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“…Although NEFAs were significantly lower (by 84%) in the plasma of food-deprived cod, a result that is in agreement with the findings of Black and Love (1986), this reduction in plasma NEFAs in fooddeprived cod may not reflect a lack of lipid mobilization. Black and Love (1986) and Garcia-Garrido et al (1990) indicated that NEFAs tend to fall with food deprivation in species where the liver is the major storage for lipids (e.g., cod) because TAG is already in the liver, and the breakdown products of TAG need not enter the circulatory system as NEFAs. However, the implications go well beyond aspects related to TAG mobilization from the liver.…”

Section: Fatty Acidsmentioning

confidence: 98%

Lipid class and nonesterified fatty acid profiles in plasma of North Atlantic cod (Gadus morhua)

Al-Kanani¹,

Parrish²,

Rodnick³

et al. 2005

Can. J. Fish. Aquat. Sci.

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Metabolic energy status is a critical metric for the evaluation of fish condition and health. Thus, we (i) conducted comprehensive and comparative measurements of nonesterified fatty acids (NEFAs) and other plasma lipids in fed and food-deprived (10 weeks) Atlantic cod (Gadus morhua) and (ii) compared three common methods for measuring total plasma NEFAs (Folch extraction/Iatroscan, Wako ® enzymatic, and acetyl chloride extraction/GC). Plasma total lipid, phospholipid, triacylglycerol, and NEFA levels were 83%-95% lower in food-deprived fish. In contrast, the concentration of a previously unidentified lipid class (ethyl ketone) was only 60% lower and was in fact almost threefold higher when expressed as a percentage of total lipid. Considerable differences in the NEFA profile were also observed, for example, 22:1ω11 (dominant NEFA in fed fish) was not detected, 20:1ω9 was 97% lower, and monounsaturated fatty acids were selectively reduced. Importantly, the acetyl chloride/GC method resulted in an eightfold overestimation of NEFA in fed fish. These results (i) suggest that plasma lipids reflect the energetic/nutritional status of wild gadids and can be used to monitor their responses to changing environmental conditions and (ii) caution against using the acetyl chloride/GC method of NEFA measurement without prior separation of plasma lipids by solid-phase chromatography. Résumé :Le niveau d'énergie métabolique est une métrique importante pour l'évaluation de la condition et de la santé des poissons. Nous avons donc (i) procédé à des dosages complets et comparatifs des acides gras non estérifiés (NEFA) et des autres acides gras du plasma chez des morues franches (Gadus morhua) nourries ou privées de nourriture pendant 10 semaines et (ii) comparé trois méthodes communes de dosage des NEFA totaux du plasma (extraction Folch/Iatroscan, analyse enzymatique Wako ® , extraction au chlorure d'acétyle/chromatographie en phase gazeuse (GC)). Les concentrations de lipides plasmatiques totaux, de phospholipides, de triacylglycérol (TAG) et de NEFA sont toutes plus basses de 83-95 % chez les poissons qui jeûnent. En revanche, la concentration d'une classe encore inédite de lipides (l'éthyl-cétone) est réduite de seulement 60 % et, en fait, elle est presque trois fois plus grande lorsqu'elle est exprimée en pourcent des lipides totaux. Il existe aussi des différences considérables dans les profils des NEFA : par exemple, le 22:1T11 (NEFA dominant chez les poissons nourris) n'est mesurable, le 20:1T9 est réduit de 97 % et les acides gras non saturés subissent une réduction sélective. Fait important à noter, la méthode du chlorure d'acétyle/GC surestime les NEFA chez les poissons nourris par un facteur de huit. Ces résultats (i) indiquent que les lipides plasmatiques reflètent le statut énergétique/nutritionnel des gadidés sauvages et peuvent servir à suivre leurs réactions aux conditions changeantes du milieu et (ii) mettent en garde contre l'utilisation de la méthode du chlorure d'acétyle/GC de dosage des NEFA sans séparation p...

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“…Both results can be related to reproduction. The liver of mature females produces vitellogenin, the precursor of yolk, during oocyte maturation (García-Garrido et al, 1990;Henningsen, 1999). In addition, some liver lipids are used in yolk anabolism (Rossouw, 1987;García-Garrido et al, 1990).…”

Section: Discussionmentioning

confidence: 99%

“…The liver of mature females produces vitellogenin, the precursor of yolk, during oocyte maturation (García-Garrido et al, 1990;Henningsen, 1999). In addition, some liver lipids are used in yolk anabolism (Rossouw, 1987;García-Garrido et al, 1990). These facts may help to explain the occurrence of larger livers in mature females than in males and immature females as an adaptation to maximize yolk formation.…”

Section: Discussionmentioning

confidence: 99%

“…These facts may help to explain the occurrence of larger livers in mature females than in males and immature females as an adaptation to maximize yolk formation. Mature males with larger livers than immature ones have been observed in the viviparous lesser guitarfish Rhinobatos annulatus Smith (Roussow, 1987), and in the oviparous small-spotted cat shark Scyliorhinus canicula (L.) (García-Garrido et al, 1990). This difference was thought to be related to metabolic requirements other than gamete formation during the reproductive season, such as migration to mating grounds and resistance to starvation (Rossouw, 1987).…”

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

The reproductive ecology and abundance of Symptevygia bonapavtii endemic to the south‐west Atlantic

Mabragaña

Lucifora

Massa

2002

Journal of Fish Biology

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Logistical ogives gave an estimated L T50 value (i.e. the total length at which 50% individuals are sexually mature) of 635 mm for female and 650 mm for male Sympterygia bonapartii. Mature individuals of both sexes had significantly larger livers than immature ones and females had a significantly heavier liver than males. Clasper elongation was the first step in male maturation, followed by clasper calcification and the development of alar thorns. In mature females, the right ovary was larger than the left, which was apparently due to differences in stroma tissue. Gonadosomatic index and diameter of ovarian follicles of mature females peaked in late spring and was at a minimum from late summer and through the winter. Juvenile S. bonapartii were more abundant near estuarine areas during winter, and adults appeared in estuaries by late spring and summer. Females carrying egg-cases were found near the shore in late spring and egg-cases were found in benthic samples only in shallow waters suggesting that S. bonapartii deposits egg-cases in shallow waters during late spring-summer and that nursery areas are in outer estuarine zones. In the southern part (38 -42 S) of the study area S. bonapartii showed a strong movement to shallow waters in late spring and summer, spreading over the entire coastal area in winter. These movements are discussed in relation to water temperature and trophic interactions.

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Serum cholesterol and triglyceride levels in Scyliorhinus canicula (L.) during sexual maturation

Cited by 42 publications

References 17 publications

Coronary arteriosclerosis in dogfish (Scyliorhinus canicula). An assessment of some potential risk factors.

Coronary arteriosclerosis in dogfish (Scyliorhinus canicula). An assessment of some potential risk factors.

Lipid class and nonesterified fatty acid profiles in plasma of North Atlantic cod (Gadus morhua)

The reproductive ecology and abundance of Symptevygia bonapavtii endemic to the south‐west Atlantic

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