Comparative study on the fatty acid composition of two marine vertebrates: striped dolphins and loggerhead turtles

Guitart, Raimón; Silvestre, Albert Martı́nez; Guerrero, Xavier; Mateo, Rafael

doi:10.1016/s0305-0491(99)00138-8

Cited by 25 publications

(14 citation statements)

References 13 publications

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“…Observed FA proportions were globally consistent with those reported for other cetacean species (Williams et al 1987;Koopman et al 1996;Iverson et al 1997b;Guitart et al 1999;Samuel and Worthy 2004), including biopsy samples of bottlenose dolphins from the Azores (Walton et al 2007). In D. delphis, global FA composition was comparable to that previously reported for specimens of the Northeast Pacific (Smith and Worthy 2006), although MUFA tended to be less represented and PUFA more abundant in our study.…”

Section: General Trends and Inter-individual Variations In Fa And Si supporting

confidence: 81%

Investigating stock structure and trophic relationships among island-associated dolphins in the oceanic waters of the North Atlantic using fatty acid and stable isotope analyses

et al. 2013

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International audienceShort-beaked common dolphins (Delphinus delphis) and Atlantic spotted dolphins (Stenella frontalis) are the two most abundant cetacean species in the oceanic waters of Madeira and the Azores. They are of similar size, occur in similar habitats and are regularly observed in mixed-species groups to forage together. Genetic analyses suggested that, within each species, dolphins ranging around both archipelagos belong to the same panmictic population. We tested the hypotheses that (1) within each species, individuals from the two archipelagos belong to a single ecological stock; (2) between species, common and spotted dolphins have distinct trophic niches; using fatty acid (FA) and stable isotope (SI) analyses. Fatty acids and stable isotopes were analysed from 86 blubber and 150 skin samples of free-ranging dolphins, respectively. Sex-related differences were not significant, except for common dolphin FA profiles. In S. frontalis, FA and SI differences between archipelagos suggested that individuals belonged to different ecological stocks, despite the existence of gene flow between the two archipelagos. In D. delphis, differences were more pronounced, but it was not possible to distinguish between stock structure and a seasonal effect, due to differential sampling periods in the Azores and Madeira. Inter-specific comparisons were restricted to the Azores where all samples were collected during summer. Differences in FA proportions, noticeably for FA of dietary origin, as well as in nitrogen SI profiles, confirmed that both species feed on distinct resources. This study emphasizes the need for an integrated approach including both genetic and biochemical analyses for stock assessment, especially in wide-ranging marine top predators

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Section: General Trends and Inter-individual Variations In Fa And Si supporting

confidence: 81%

Investigating stock structure and trophic relationships among island-associated dolphins in the oceanic waters of the North Atlantic using fatty acid and stable isotope analyses

et al. 2013

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“…The fatty acids identified in the lungs were generally similar among the different species studied, with only a few of them presenting significant quantitative differences. In all the species, except the two species from the family Ziphiidae, SFAs showed the highest percentage, followed by MUFAs and finally PUFAs, in agreement with previous studies in striped dolphins 36,37 .…”

Section: Lipid Classes Compositionsupporting

confidence: 92%

Lipids of lung and lung fat emboli of the toothed whales (Odontoceti)

Arregui

Glandon

Quirós

et al. 2020

Sci Rep

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Lipids are biomolecules present in all living organisms that, apart from their physiological functions, can be involved in different pathologies. One of these pathologies is fat embolism, which has been described histologically in the lung of cetaceans in association with ship strikes and with gas and fat embolic syndrome. To assess pathological lung lipid composition, previous knowledge of healthy lung tissue lipid composition is essential; however, these studies are extremely scarce in cetaceans. In the present study we aimed first, to characterize the lipids ordinarily present in the lung tissue of seven cetacean species; and second, to better understand the etiopathogenesis of fat embolism by comparing the lipid composition of lungs positive for fat emboli, and those negative for emboli in Physeter macrocephalus and Ziphius cavirostris (two species in which fat emboli have been described). Results showed that lipid content and lipid classes did not differ among species or diving profiles. In contrast, fatty acid composition was significantly different between species, with C16:0 and C18:1ω9 explaining most of the differences. This baseline knowledge of healthy lung tissue lipid composition will be extremely useful in future studies assessing lung pathologies involving lipids. Concerning fat embolism, non-significant differences could be established between lipid content, lipid classes, and fatty acid composition. However, an unidentified peak was only found in the chromatogram for the two struck whales and merits further investigation.

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“…Debido al interés comercial que tienen los aceites de orígen marino dada su importancia en la salud humana, la mayoría de los estudios sobre los ácidos grasos en mamíferos marinos se han realizado en la leche, en la capa de grasa y en los aceites procedentes de la capa de grasa subcutánea y/o en algunos órganos tales como riñón, hígado y corazón (Ackman, 1988;1994;Ackman y Eaton, 1988;Conquer et al, 1999;Deutch et al, 2000;Guitart et al, 1999;Grompone et al, 1990;Ochoa-Acuña et al, 1999;Yurkows, 1987). Hasta la fecha no existen antecedentes sobre la composición lipídica del plasma del lobo marino de California, a pesar de la importancia que la grasa tiene en estos animales.…”

Section: Introductionunclassified

“…Due to the commercial interest on the oils of marine origin because of its importance for the human health, most of the studies about fatty acids in marine mammals have been done in the milk, in the fat layer and in the oils from the subcutaneous fat layer and/or in some organs such as the kidney, the liver and the heart (Ackman, 1988;1994;Ackman and Eaton, 1988;Conquer et al, 1999;Deutch et al, 2000;Guitart et al, 1999;Grompone et al, 1990;Ochoa-Acuña et al, 1999;Yurkows, 1987). To date, there are not any backgrounds about the lipidic composition of the California sea lion's plasma despite the importance of fat in these animals.…”

Section: Introductionmentioning

confidence: 99%

Fatty acids in plasma of California sea lion pups (Zalophus c. californianus) from Los Islotes, Baja California Sur, Mexico

González

Gamboa²,

Romo

2003

Cienc. Mar.

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Nutritious fats include all the lipids ingested as food and are composed mainly of triglycerides mixed with smaller quantities of other lipids. Fatty acids (FA) constitute the part of most nutritious interest in triglycerides. The fatty acid composition was assesed in the blood plasma of California sea lion pups (Zalophus c. californianus) from Los Islotes, Baja California Sur, in the Gulf of California, during 1999. Blood samples were obtained from 35 anesthetized sea lion pups, 21 males (M) and 14 females (F). The plasma was separated by centrifugation and stored with different antioxidants. The FA profile was determined by gas chromatography with flame ionization detection (FID). There was a great variation both in presence and quantity of fatty acids http://dx.doi.org/10. 7773/cm.v29i1.137 Ciencias Marinas, Vol. 29, No. 1, 2003 10 IntroducciónLos lobos marinos de California Zalophus c. californianus se encuentran en lo alto de la cadena trófica de los océanos, y tienen en común con los demás mamíferos marinos, la depositación de grasa en la capa de grasa subcutánea. En los pinípedos, hasta un 85% del total de los lípidos se encuentran almacenados en esta capa de grasa que además funciona como órgano termorregulador, reserva energética y órgano que confiere flotabilidad al animal (Riedman, 1990).Debido a esto, la importancia de la capa de grasa no está en duda si además se considera que tal depósito refleja la integración de los ácidos grasos de los pescados que el animal haya consumido (Ackman, 1994), por lo que se piensa que la composición lipídica del suero y de la capa de grasa subcutánea podrían ser buenos indicadores de la condición corporal de los animales.Sobre este tema se han realizado muy pocos estudios en otras especies o poblaciones de mamíferos marinos, sin embargo, se sabe que la composición lipídica de la capa de grasa está modificada por el tipo y cantidad de las grasas obtenidas a través de la dieta. Esta grasa en la dieta se encuentra en forma de triglicéridos, los cuales están formados por tres ácidos grasos y un glicerol (Ackman, 1988;1994;Grompone et al., 1990). Algunas investigaciones sugieren que el lobo marino de California tiene una dieta muy variada, por lo que se le considera un predador oportunista (Aurioles et al., 1984;Sánchez, 1992;Aurioles-Gamboa et al., 1997;. Sin embargo, otros trabajos indican que esta especie parece preferir principalmente peces que tienden a concentrarse en grandes cardúmenes como anchovetas y sardinas, aunque también pueden incluir algunos cefalópodos, principalmente calamar (Aurioles-Gamboa, 1988;Orta, 1988).Los pinnípedos son uno de los pocos grupos de mamíferos capaces de mantener las demandas energéticas durante la lactancia por completo mientras ayunan, gracias a sus reservas corporales de nutrimentos. La producción y calidad de la leche de las madres durante la lactancia influye sobre el porcentaje y patrón de crecimiento de la cría (Mellish et al., 1999). La lactación es un proceso muy costoso en todas las especies, por lo

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Comparative study on the fatty acid composition of two marine vertebrates: striped dolphins and loggerhead turtles

Cited by 25 publications

References 13 publications

Investigating stock structure and trophic relationships among island-associated dolphins in the oceanic waters of the North Atlantic using fatty acid and stable isotope analyses

Investigating stock structure and trophic relationships among island-associated dolphins in the oceanic waters of the North Atlantic using fatty acid and stable isotope analyses

Lipids of lung and lung fat emboli of the toothed whales (Odontoceti)

Fatty acids in plasma of California sea lion pups (Zalophus c. californianus) from Los Islotes, Baja California Sur, Mexico

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