Lipids and fatty acids as indicators of egg condition, larval feeding and maternal effects in Cape hakes (Merluccius paradoxus and M. capensis)

Grote, Britta; Hagen, Wilhelm; Lipiński, M.; Verheye, Hans M.; Stenevik, Erling Kåre; Ekau, Werner

doi:10.1007/s00227-011-1626-6

Cited by 18 publications

(15 citation statements)

References 53 publications

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“…The results indicate that whiting roes are rich sources for omega‐3 FAs in terms of a healthy diet. Previous researchers also reported that roes of different fish species are rich source of EPA and DHA (Shirai et al ., ; Grote et al ., ). Shirai et al .…”

Section: Discussionmentioning

confidence: 97%

“…The results indicate that whiting roes are rich sources for omega-3 FAs in terms of a healthy diet. Previous researchers also reported that roes of different fish species are rich source of EPA and DHA (Shirai et al, 2006;Grote et al, 2011). Shirai et al (2006) demonstrated that predominant FAs in the various Japanese salted roe products were DHA within the range of 23.3-39.8%, while Mol & Turan (2008) obtained much lower values of DHA between 7.8 and 12.2% for the processed roes.…”

Section: Dec Jan Feb Mar May Apr Jun Jul Aug Sep Oct Novmentioning

confidence: 90%

“…Kocatepe et al (2012) obtained higher lipid content in whiting roes than our findings with a wide range of 0.4 and 9.7%. The lipid contents of the roes are not only important for nutritional value for human consumption but also are significant for the fish larvae survival affected by the limited reserves of lipid content as energy source provided by the feeding success of mother fish as emphasised by Grote et al (2011).…”

Section: Dec Jan Feb Mar May Apr Jun Jul Aug Sep Oct Novmentioning

confidence: 99%

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Variations in lipid and fatty acid contents in different body parts of Black Sea whiting, Merlangius merlangus euxinus (Nordmann, 1840)

Tufan

Köse

2013

Int J of Food Sci Tech

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Summary Whiting is a commercially important fish species of the world. This study demonstrates monthly variations in lipid and fatty acid (FA) contents of muscle, liver and roes of Black Sea whiting, Merlangius merlangus euxinus. Significant changes occurred in lipid contents between months (P < 0.05) with the highest values representing in liver 33.8–64.5%. Total polyunsaturated fatty acids (PUFA) in all groups were higher than total saturated and monounsaturated FAs with significant variations between months (P < 0.05). The highest PUFA of muscles, livers and roes were 60.0, 45.9 and 50.9%, respectively. The main FA was docosahexaenoic acid (DHA) of muscle tissue and roes, while oleic acid was the major FA in livers. Although about 164–357 g in muscle tissue or 224–392 g of whiting roe are necessary to consume to cover 1 g day−1 of eicosapentaenoic acid (EPA)+DHA for a healthy diet, only as low as 5.5–10.0 g of liver would be enough to cover the same amount of daily EPA+DHA requirement. The results indicated that whiting livers constitute a rich and underexploited source of polyunsatured FAs. Furthermore, the results may aid further research on the nutritional studies, the physiology and stock management of whiting species.

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Section: Discussionmentioning

confidence: 97%

Section: Dec Jan Feb Mar May Apr Jun Jul Aug Sep Oct Novmentioning

confidence: 90%

Section: Dec Jan Feb Mar May Apr Jun Jul Aug Sep Oct Novmentioning

confidence: 99%

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Variations in lipid and fatty acid contents in different body parts of Black Sea whiting, Merlangius merlangus euxinus (Nordmann, 1840)

Tufan

Köse

2013

Int J of Food Sci Tech

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“…Eggs and larvae are numerous but follow relatively limited pathways and exhibit patchy distributions (Stenevik et al 2008;Grote et al 2012) because of a combination of two factors: the environmental milieu and mortality. Juveniles must survive and grow in order to extend their range and increase their biomass (Grote et al 2011. We have shown that the environmental pathway of M. paradoxus juveniles is relatively narrow and they are probably most vulnerable, biologically, at that life stage, as informed by their distribution.…”

Section: Biological Interpretation Of the Environmental Relationshipsmentioning

confidence: 98%

Oxygen and temperature influence the distribution of deepwater Cape hake Merluccius paradoxus in the southern Benguela: a GAM analysis of a 10-year time-series

Mbatha

Yemane

Ostrowski

et al. 2019

African Journal of Marine Science

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Generalised additive models (GAMs) were applied to survey data to assess the influence of dissolved oxygen, water temperature and year of sampling upon the presence/absence of small (≤15 cm TL), medium (16-34 cm TL) and large (≥35 cm TL) size classes of deepwater Cape hake Merluccius paradoxus captured off the west coast of South Africa. Data were obtained from surveys using the RV Dr Fridtjof Nansen conducted in 2003 and from 2005 to 2013 during summer (January-February). Among the variables investigated, oxygen was the most important for the small size class (juveniles), with both low and high constraints (two-sided, 'just right' option), whereas for the medium and large size classes the oxygen effects were one-sided (avoiding lows). This finding, in combination with other published information, suggests that the Orange Banks is a nursery ground for juvenile M. paradoxus and that the area covered by this nursery ground can vary with the optimal oxygen concentration. The temperature constraint was generally wider and weaker than that for oxygen, being two-sided for the small and medium hake and one-sided (avoiding highs) for the large hake. The medium hake displayed the greatest tolerance to the investigated variables, which resulted in the widest distribution for this size class. Temperature, oxygen and sampling year play an important role in determining the distribution of M. paradoxus, but details of the biology (life cycle) of the species, such as its pelagic-demersal transition and associated movements, are no less important. . The list of models considered and the performance measures of each of the models, considered for the three size classes of Merluccius paradoxus, are presented in Tables S1 and S2. The climatologies of bottom temperature and dissolved oxygen are shown in Figure S1. Additional model diagnostics (e.g. calibration plots and residual variograms) are shown in Figures S2 and S3.

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“…In oviparous fish species, fatty acids (FA) are transferred from the female to the eggs prior to their release into the environment. Female nutrition and condition are then important factors that will determine the FA composition in fish eggs (Grote et al 2011;Pickova et al 2007). Fatty acids are important for the successful development of fish embryos and serve multiple purposes, including oxidative fuels, structural components for organogenesis, and precursors of eicosanoids, a group of highly biologically active hormones (De Meester et al 2013).…”

Section: Introductionmentioning

confidence: 99%

Assessing fatty acid remodelling during embryogenesis in Greenland halibut (Reinhardtius hippoglossoides) exposed to hypoxia

et al. 2016

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Eggs of Greenland halibut (Reinhardtius hippoglossoides) are subjected to hypoxic conditions in the deep waters of the Estuary and Gulf of St. Lawrence during their development. The aim of this study was to determine whether there was potential remodelling of fatty acids (FA) during embryogenesis in eggs exposed to several levels of dissolved oxygen (DO). Fertilized eggs were exposed to four DO levels: severely hypoxic (10 and 20% sat [percent saturation]), moderately hypoxic (35% sat), and normoxic (100% sat). No FA remodelling was observed in eggs submitted to the different DO levels. The most abundant FA in the polar lipid fraction were docosahexaenoic (DHA, 22: 6 n-3) and eicosapentaenoic (EPA, 20: 5 n-3) acids (26 and 22%, respectively), the latter being positively correlated with hatching success. Batches with low hatching success were characterized by eggs with decreased levels of polar EPA and DHA at the end of embryogenesis. Whatever the hatching success, the proportion of FA in the neutral fraction was always significantly lower compared to the polar fraction. Oleic acid (18: 1 n-9) (17%) was the main FA found in this fraction; together with gondoic acid (20:1 n-9), they explained most of the variation in hatching success.

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Lipids and fatty acids as indicators of egg condition, larval feeding and maternal effects in Cape hakes (Merluccius paradoxus and M. capensis)

Cited by 18 publications

References 53 publications

Variations in lipid and fatty acid contents in different body parts of Black Sea whiting, Merlangius merlangus euxinus (Nordmann, 1840)

Variations in lipid and fatty acid contents in different body parts of Black Sea whiting, Merlangius merlangus euxinus (Nordmann, 1840)

Oxygen and temperature influence the distribution of deepwater Cape hake Merluccius paradoxus in the southern Benguela: a GAM analysis of a 10-year time-series

Assessing fatty acid remodelling during embryogenesis in Greenland halibut (Reinhardtius hippoglossoides) exposed to hypoxia

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