Edibility assessment of the swimming crab Charybdis natator (Brachyura: Portunidae) from the Gulf of Suez, Red Sea, Egypt

Sallam, Wafaa S.; Gab-Alla, Amaal

doi:10.21608/ejabf.2009.2022

Cited by 7 publications

(5 citation statements)

References 19 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…They act as major reserve food along with protein and are subject to periodic fluctuations influenced by environmental variables [49]. Our results are in agreement with [41] in P. vigil crabs, [50] in the meat of Scylla serrata, [51] in Charybdis natator, [52] in Chinese mitten crab (Eriocheir sinensis). The biochemical composition of eggs of P. pelagicus showed more lipid content [53].…”

Section: Discussionsupporting

confidence: 89%

Untitled

2018

RJLBPCS

View full text Add to dashboard Cite

Blue swimmer crab Portunus pelagicus (Linnaeus, 1758) is an economically valuable species found along the southeast coast of India. The present study examines the proximate composition (total protein, carbohydrate, lipid, moisture and ash content) of cooked meat found in body, claw, leg and the exoskeleton (carapace) separately for male, female, berried crabs collected from Mimisal coast, Tamil Nadu, India. The highest meat yield was found in male body (11.37%) while the lowest was found in berried leg (1.91%). The nutrients were found more in the body meat than the claw meat and leg meat. Among the macronutrients, highest value of protein was found in the male body meat (38.18%) while the highest value of lipid was found in berried body meat (9.04%). Carbohydrates and ash were found maximum in female body meat (3.07% and 12.5% respectively). The highest moisture content was found in male body meat (66.2%). Similarly, in the exoskeleton, the highest value of protein was found in male (9.18%) while the highest lipid value was found in berried crabs (3.18%). Carbohydrates and ash were the maximum in female (1.81% and 2.5% respectively), while the highest moisture content was found in males (28.5%). There were significant differences in the proximate composition of cooked meat found in body, claw, leg and in the exoskeleton of male, female and berried crabs. Hence, it may be concluded that in terms of nutritional value, male and female crabs may be considered more suitable than the berried for consumers.

show abstract

Section: Discussionsupporting

confidence: 89%

Untitled

2018

RJLBPCS

View full text Add to dashboard Cite

show abstract

“…Subsequently, the closed season that currently runs in the Gulf of Suez region is not necessarily effective in the case of C. natator population since females breed all year round, however, its application would generally improve the reproductive output of this species. This edible crab is regarded as a new resource to the gulf area (Sallam & Gab-Alla, 2009). Unless implications for conservation is considered, possible fishing pressure could be anticipated on this population considering the disappearance of large individuals by unregulated fishing.…”

Section: Discussionmentioning

confidence: 99%

“…In the northern coasts of the Red Sea, this crab exists in the catches of trawlers operating in the Gulf of Suez and supports a small fishery. The fished quantities are introduced to the markets of Suez city together with the commercial species P. pelagicus but receive little attention from consumers (Sallam and Gab-Alla, 2009). Despite the closed season that runs from June to August in the Gulf of Suez region, samples of Charybdis natator were obtained during the remaining months of the year.…”

Section: Introductionmentioning

confidence: 99%

Some biological aspects of the portunid crab Charybdis natator from the Gulf of Suez, Red sea

Sallam

Gab-Alla

2010

Egypt. J. of Aquatic Biolo. and Fish.

Self Cite

View full text Add to dashboard Cite

he population of the portunid crab Charybdis natator in the Gulf of Suez, Red Sea was studied by monthly sampling from September 2007 to May 2008. Crabs were sexed, measured and berried females recorded. A total of 498 individuals were obtained, of which 232 (46.6%) were males, 212 non-ovigerous females (42.5%), and 54 (10.9%) ovigerous females. The overall sex ratio (M:F) was (1:1.1) and females outnumbered females during September-November. The population showed sex differences in the size frequency distributions, with males reaching larger size than females respectively). Ovigerous females existed all year round and ranged in size between 83-118.4mm CW. Fecundity ranged from 45230 to 335529 eggs per female and was positively correlated with body size. The effectiveness of the closed season that runs in the Gulf of Suez on the population of C. natator was discussed.

show abstract

“…The current study is an early report for the characterization of potentially bioactive components in the shell of the ridged swimming crab C. natator. Though it has the potential to be a major fishery and a rich source of seafood proteins (Sallam & Gab-Alla, 2009), the species appears to be the least studied within the genus Charybdis. Many studies have assessed the invasive capabilities and biological activities of other Charybdis species, mainly C. japonica and C. hellerii (Hilliam and Tuck, 2023;Izar et al, 2023).…”

Section: Discussionmentioning

confidence: 99%

As healthy as invasive: Charybdis natator shell extract reveals beneficial metabolites with promising antioxidant and anti-inflammatory potentials

Galal-Khallaf,

Samir Aboali,

El-Sayed Hassab El-Nabi

et al. 2024

Front. Mar. Sci.

View full text Add to dashboard Cite

Crabs of the genus Charybdis are some of the world’s most aggressive and voracious marine invasive crustaceans. They are found in a wide variety of ecosystems in the Red Sea. Their near ubiquity in diverse marine habitats, however, makes them a possible resource for novel marine-derived bioactive products. To provide an important insight into the potential for C. natator as a beneficial product, its shell methanolic extract was chromatographically analyzed for identification of potential bioactive ingredients. Additionally, two different doses, i.e. a low and a high dose, of this extract were tested for their ability to protect against copper-induced oxidative stress and proinflammatory response in adult zebrafish Danio rerio. Gene expression levels of transcripts of proinflammatory mediators, i.e. nf-κβ and tnf-α; antioxidant enzymes, i.e. sod, cat, and gpx; and lipid-metabolizing enzymes, i.e., acox1 and fasn, were determined. The results showed that C. natator shell is rich in potential bioactive metabolites, including diverse unsaturated fatty acids, alkanes, flavonoids, and phenolic acids. Most antioxidant and proinflammatory transcripts in the protected groups were restored to levels that were lower than those in the CuSO4-stressed group. The low dose showed special success in inducing these effects. Also, the low-dose-protected group showed significantly elevated acox1 and decreased fasn, suggesting the capability of crab shell extract at a low dose to assist lipolysis and inhibit lipogenesis. The abundant presence of saturated fatty acids in the shell extract can be the reason for the inadequacy of the high dose to promote the antioxidant and anti-inflammatory activities. These results suggest that there is a potential to develop therapeutic industrial uses for C. natator shell, instead of considering it as a discard. Its wealth of bioactive metabolites may contribute to the market for natural products to combat inflammatory and oxidative stress, the origin of many diseases in the modern world.

show abstract

Edibility assessment of the swimming crab Charybdis natator (Brachyura: Portunidae) from the Gulf of Suez, Red Sea, Egypt

Cited by 7 publications

References 19 publications

Untitled

Untitled

Some biological aspects of the portunid crab Charybdis natator from the Gulf of Suez, Red sea

As healthy as invasive: Charybdis natator shell extract reveals beneficial metabolites with promising antioxidant and anti-inflammatory potentials

Contact Info

Product

Resources

About