Preliminary studies on habitat and diversity of some sea urchin species (Echinodermata: Echinoidea) on the southern Levantine basin of Egypt

Elmasry, Elzahrae; Omar, Hamdy A.; Razek, Fatma A. Abdel; El-Magd, Mohammed A.

doi:10.1016/j.ejar.2013.12.009

Cited by 14 publications

(7 citation statements)

References 19 publications

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“…Echinoids have been recorded in Red Sea since the Frinch Campaign in Egypt in 1798, where numerous new records of species (Audouin, 1826). Afteraward, several investigations were conducted to the distribution of many echinoid species along the Red Sea in addition to monographs and catalogues (Elmasry et al, 2013;Zeina et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

Antimicrobial agents from sea urchin (Diadema setosum) collected from the Red Sea, Egypt

El-Sayed¹,

Elshaer²,

Ibrahim³

et al. 2020

Egypt. J. of Aquatic Biolo. and Fish.

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Section: Introductionmentioning

confidence: 99%

Antimicrobial agents from sea urchin (Diadema setosum) collected from the Red Sea, Egypt

El-Sayed¹,

Elshaer²,

Ibrahim³

et al. 2020

Egypt. J. of Aquatic Biolo. and Fish.

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“…Four loci of the GHR gene containing E4-E6 and E8 were amplified by PCR using primers and annealing temperatures as presented in Table 1. PCR mix and thermal cycle conditions were done as previously described [17] but with an annealing temperature of 56 • C for 40 s. The specificity and quality of PCR bands were validated using 1% agarose gels.…”

Section: Snps Detection and Genotypingmentioning

confidence: 99%

Association of GHR Polymorphisms with Milk Production in Buffaloes

El-Komy

Saleh

Abdel-Hamid

et al. 2020

Animals

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For its role in the mediation of growth hormone (GH) galactopoietic effect, growth hormone receptor (GHR) was considered a functional candidate gene for milk performance in cattle. However, its genetic variation and potential effect have not been investigated in Egyptian buffaloes. This study aimed to screen GHR for polymorphisms and study their associations with milk traits in Egyptian buffaloes. Polymerase chain reaction, single-strand conformation polymorphism, and sequencing were used to identify mutations in 4 exons (E4–E6 and E8) of the GHR gene in 400 Egyptian buffaloes. No polymorphisms were found in E4, while 2 SNPs (c.380G>A/p.Arg127Lys and c.387C>T/p.Gly129) in E5, one silent mutation (c.435A>G/p.Pro145) in E6, and another missense mutation (c.836T>A/p.Phe279Tyr) in E8 were detected. The c.380G>A SNP in the extracellular domain was associated with milk yield, fat %, protein %, and 305-day milk, fat and protein yield, with higher levels in animals carrying the mutant A allele. The c.836T>A SNP in the transmembrane domain was associated with milk yield, fat %, protein %, and 305-day milk, fat and protein yield, with higher milk yield and lower fat %, protein %, fat and protein yield in the mutant A allele-animals. Interestingly, animals with the two mutant AA alleles produced higher milk yield, fat %, protein %, fat and protein yield, accompanied with upregulated expressions of GHR, GH, insulin-like growth factor 1 (IGF1), prolactin (PRL), prolactin receptor (PRLR), β-casein (encoded by CSN2 gene), and diacylglycerol acyltransferase-1 (DGAT1) genes and proteins in milk somatic cells. Therefore, selection of Egyptian buffaloes with mutant AA haplotypes for the novel c.380G>A SNP and the well-known c.836T>A SNP could improve milk yield and quality in buffaloes.

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“…Tripneustes gratilla is one kind of high economical sea urchin found in Kupang Bay, East Nusa Tenggara. Sea urchin gonads are luxurious food in some Asian and Mediterranian, as well as Western countries, such as Barbados and Chile (Rahman et al, 2012;Garama et al, 2012;Elmasry et al, 2013;Elmasry et al, 2015;Rahman et al, 2014;Rahim & Nurhasan, 2016;Cirino et al, 2017;Samuel et al, 2017). Sea urchins are also bioactive ingredient source, namely echinochrome A, polyunsaturated fatty acids (PUFAs), β-carotene, amino acids, and EPA (Chantaro et al, 2008;Chen et al, 2010;Bragadeeswaran et al, 2013;Rahman et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

Gonad quality of sea urchin Tripneustis gratilla with different seaweed diets

Tjendanawangi¹,

Dahoklory²

2020

Jurnal Akuakultur Indonesia

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ABSTRACT Gonad quality of sea urchin Tripneustis gratilla is influenced by consumed seaweed type. Therefore, this study was conducted to determine the type of seaweed as potential source of carotenoids and produce a good quality of sea urchin gonad. The study was conducted in two phases, namely first phase was to obtain the content of carotenoids and β-carotene from several species of seaweed; and second phase was to testify the seaweed that produced high quality of sea urchin gonad.This study used completely randomized design with 4 treatmens of macroalgae diets, namely: 1. Enhalus sp., 2. Sargassum sp., 3. Ulva sp., and 4. Eucheuma sp. Each treament was repeated three times. Measured parameters were gonad weight, gonad maturity index, gonad color quality, and gonad texture. The study result showed that Enhalus contained the highest carotenoid and β-carotene content with 1409.53 and 639.37 mg/kg respectively. The highest gonad weight was 2.8 g; gonad color and texture was good (score 3); and the highest gonad maturity index was 5.4% that obtained from sea urchin fed with Enhalus. Therefore, this study concludes that Enhalus is potential source of carotenoids for sea urchin T. gratilla diet that will produce a good quality of gonad. Keywords: carotenoid, diet, gonad quality, sea urchin, seaweed.

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Preliminary studies on habitat and diversity of some sea urchin species (Echinodermata: Echinoidea) on the southern Levantine basin of Egypt

Cited by 14 publications

References 19 publications

Antimicrobial agents from sea urchin (Diadema setosum) collected from the Red Sea, Egypt

Antimicrobial agents from sea urchin (Diadema setosum) collected from the Red Sea, Egypt

Association of GHR Polymorphisms with Milk Production in Buffaloes

Gonad quality of sea urchin Tripneustis gratilla with different seaweed diets

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