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Fatty Acids Profile, Atherogenic (IA) and Thrombogenic (IT) Health Lipid Indices, of Raw Roe of Blue Fin Tuna (<i>Thunnus</i> <i>thynnus</i> L.) and Their Salted Product “Bottarga”

“…In fact, as reported in Table 1, the n -3/n -6 ratio was about 8 in both samples due to the low level of n -6 acids and high levels of EPA and DHA. The results presented in this investigation are in agreement with similar study on salted herring (Clupea harengus) products as reported by Aro et al [9], and also with previous studies on the general lipid composition in the ovary of Bluefin Tuna (BFT) T.thynnus by Mourente et al [23] during sex maturation. It is worth to highlight the role of both DHA and EPA in the ovary of this T. thynnus during sex maturation and spawning, in order to better understand the results obtained in our research.…”

“…It is proved that T. thynnus as well as other tunids accumulate DHA in almost all their tissues from very early stages of sex maturation until spawning [24][25][26][27]. The eggs spawned by BFT females are of the high lipid content type, so much so that EPA and mainly DHA, are unceasing accumulated in blue fin tuna ovary at spawning, as egg-specific lipoproteins component [23,28]. Besides it is well documented, that in this specimen there is a strong selection against monoenes such as 20:1n -9 and 22:1n -11 during sex maturation and which might be a preferred substrate for oxidation in the muscles tissues to be used as fuel in reproductive migration and spawning activity [28]; this features could be considered in accordance to the values of these monoenes here reported.…”

Energy allocation strategy of skipjack tuna Katsuwonus pelamis during their reproductive cycle

“…The increase in PL in gonads, from the developing phase to spawning-capable phase, accumulating as yolk in the oocyte, has previously been described in teleosts (Wiegand, 1996;Patiño & Sullivan, 2002;Lubzens et al, 2010). Overall, the dominance of neutral lipids over polar lipids in K. pelamis ovaries is similar to other temperate scombrids, such as S. sarda and T. thynnus (Mourente et al, 2002;Ortega & Mourente, 2010) and in tropical T. albacares .…”

“…muscle, liver and mesenteric fat) for gonad maturation is species specific (Wiegand, 1996;McBride et al, 2015). In bluefin tuna Thunnus thynnus (L. 1758) and bonito Sarda sarda (Bloch 1793), large lipid deposits have been described in muscle and mesenteric perigonadal tissue (Mourente et al, 2002;Zaboukas et al, 2006). In contrast, in tropical yellowfin tuna Thunnus albacares (Bonnaterre 1788) the liver acts as the main storage tissue .…”

Microarray gene expression profiles from mature gonad tissues of Atlantic bluefin tuna, Thunnus thynnus in the Gulf of Mexico

“…Therefore based on Fabp2 -like EST TTC05123 observed sexual dimorphism in expression and the established gender-specific energy requirements for fish, we propose Fabp2 -like EST TTC05123 is involved in energy homeostasis. Furthermore we suggest that the greater expression of Fabp2 -like EST TTC05123 in testis tissue compared to ovarian tissue may indicate that male T. thynnus are using and/or mobilizing a greater proportion of lipids for energy homeostasis than females who are presumed while present in spawning locations such as the Gulf of Mexico to be sequestering their lipid reserves for oocyte development [81]. …”