Checklist of seaweeds and seagrasses of Egypt (Mediterranean Sea): A review

Shabaka, Soha

doi:10.1016/j.ejar.2018.08.001

Cited by 33 publications

(20 citation statements)

References 22 publications

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“…According to Shafik & Taha (2008), Shams El-Din & Aboul-Ela (2017), and the regular surveys along the Mediterranean coast of Egypt performed by SHS, the species has been observed only in the Eastern Harbour of Alexandria (Shafik & Taha 2008; Shams El-Din & Aboul-Ela 2017; this study), a eutrophic lagoon where it has been observed since 1992 (Shafik & Taha 2008, as G. doryphora). As there were no records of large foliose Grateloupia species from the area prior to 1992 (see Nasr 1940;Nasr & Aleem 1948;Aleem 1951Aleem , 1993Khalil 1987;Shabaka 2018), it is unlikely that G. gibbesii had been overlooked previously.…”

Section: Discussionmentioning

confidence: 99%

Morphological and molecular assessment of Grateloupia (Halymeniales, Rhodophyta) from Egypt revealed a new introduced species in the Mediterranean Sea, Grateloupia gibbesii

et al. 2021

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The Mediterranean Sea is a hotspot for introduced marine species, including seaweeds. Among red algae, Grateloupia, with no less than eight introduced species, occupies a prominent position. Here, we report a large foliose Grateloupia species collected in Eastern Harbour, Alexandria, Egypt, which had previously been reported as G. acuminata and G. doryphora. Comparison of rbcL gene sequences revealed that the specimens represent G. gibbesii, a species originally described from Charleston, South Carolina, USA and potentially distributed in the warm temperate and tropical western Atlantic Ocean. The species has been known only from a single location in Alexandria since the early 1990s, it has not been reported in extensive surveys prior to that date, and there are no reports from other Mediterranean sites. This indicates a recent introduction, with shipping the likely vector. We describe the vegetative and reproductive morphology of G. gibbesii as the basis for evaluating variation in female reproductive structures and generic concepts in Grateloupia.

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Section: Discussionmentioning

confidence: 99%

Morphological and molecular assessment of Grateloupia (Halymeniales, Rhodophyta) from Egypt revealed a new introduced species in the Mediterranean Sea, Grateloupia gibbesii

et al. 2021

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“…The seaweeds were thoroughly washed with tap water and identified morphologically. [18][19][20] All seaweed specimens were deposited in the Botany Department Herbarium at Tanta University as voucher specimens. All samples were dried at 40 C until constant weight, then grounded to a fine powder of <0.1 mm and stored in a dark dry place for further use.…”

Section: Seaweeds Collection and Preparationmentioning

confidence: 99%

Sequential biofuel production from seaweeds enhances the energy recovery: A case study for biodiesel and bioethanol production

Elshobary

El-Shenody

Abomohra

2020

Intl J of Energy Research

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In the present study, eight seaweeds (five red, two brown and one green) were collected and evaluated for dual biodiesel and/or bioethanol production. The highest significant lipid and carbohydrate contents were recorded in the brown seaweed Dilophus fasciola (4.92 and 37.97%dw, respectively). Three routes were investigated, namely R1 and R2 for direct production of biodiesel and bioethanol, respectively, from the whole biomass, in addition to R3 representing the sequential biodiesel and bioethanol production. D. fasciola showed a biodiesel yield of 35.04 mg g −1 dw, composed mainly of C16-C18 fatty acids with a high saturation degree. All biodiesel characteristics complied with the recommended values of international standards. The maximum reducing sugar content (37.2 g L −1) and bioethanol productivity at 72 hours (0.165 g L −1 h −1) were recorded in the lipid-free biomass (R3), which were 16.3% and 27.9%, respectively, higher than that of R2. Therefore, a maximum estimated total energy output of 9.96 MJ kg −1 was recorded in R3, which represented 6-times and 28.3% higher than R1 and R2, respectively.

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“…Seaweed, in particular, has attracted great interests because of the high content of essential amino acids, vitamins and trace minerals (Güroy et al, 2007). It is estimated that about 187 kinds of seaweed species in Egypt were listed (45 green, 35 brown and 107 red seaweeds), constituting 16 % of the Mediterranean seaweeds (Coll et al, 2010;Shabaka, 2018). Seaweeds such as the Ulva species have become important macroalgae, which are considered valuable alternative feeds for a wide range of livestock, mostly as a source of valuable nutrients, especially chelated micro-metals, whose the availability is higher than that found in inorganic compounds; complex carbohydrates with prebiotic activities; pigments, vitamins, and are especially rich in vitamin C and polyunsaturated fatty acids beneficial to consumer health Ortiz et al, 2006;Garcia-Casal et al, 2007).…”

Section: Introductionmentioning

confidence: 99%

Effects of Dietary Supplementation With Green and Brown Seaweeds on Laying Performance, Egg Quality, and Blood Lipid Profile and Antioxidant Capacity in Laying Japanese Quail

ZeWei

Hafsa

Zahran

et al. 2019

EPSJ

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The effect of green and brown seaweeds supplementation on laying performance, egg quality, serum lipid profile and antioxidant capacity was evaluated in Japanese quails. Five groups of Japanese quails (total = 180; 120 hens + 60 males) of 10 wks old were fed on diets without or with green (GS) and brown (BS) seaweeds, each at 1.5 and 3% for 14 weeks. Results indicate that GS and BS supplementation significantly improved egg-laying rate and increase egg number, egg weight and egg mass and decrease feed conversion ratio (FCR). However, feed consumption (FC) was not significantly affected by experimental treatments. The GS and BS supplemented groups led to improve the eggshell thickness, also helped to improve the egg yolk weight, index and color compared to the control. Supplementing dried GS and BS significantly decreased the value of Haugh unit, total lipids and total cholesterol content of egg yolk as well as displayed higher fertility and hatchability percentages than those of the control group. Quails received dried GS and BS treatments had a higher dressing percentage and a lesser percentage of abdominal fat compared to the control group. Serum total lipids, triglycerides, total cholesterol, HDL and LDL values were significantly decreased compared to the control. There were significant effects on enzymatic antioxidant activity of blood serum (malondialdehyde, total antioxidant capacity, catalase, glutathione peroxidase and superoxide dismutase). It is concluded that green and brown seaweeds supplementation can improve egg-laying performance and had a positive effect on fertility and hatchability values and resulted in significant reduction in total lipids and total cholesterol in the serum and yolk while enhancing total antioxidant capacity in blood serum as well as positively affecting economic parameters. Thus, these results suggested that green and brown seaweeds can be used safely as a feed additive in diets for laying Japanese quail.

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Checklist of seaweeds and seagrasses of Egypt (Mediterranean Sea): A review

Cited by 33 publications

References 22 publications

Morphological and molecular assessment of Grateloupia (Halymeniales, Rhodophyta) from Egypt revealed a new introduced species in the Mediterranean Sea, Grateloupia gibbesii

Morphological and molecular assessment of Grateloupia (Halymeniales, Rhodophyta) from Egypt revealed a new introduced species in the Mediterranean Sea, Grateloupia gibbesii

Sequential biofuel production from seaweeds enhances the energy recovery: A case study for biodiesel and bioethanol production

Effects of Dietary Supplementation With Green and Brown Seaweeds on Laying Performance, Egg Quality, and Blood Lipid Profile and Antioxidant Capacity in Laying Japanese Quail

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