Biological activity of the red alga Laurencia brandenii

Manilal, Aseer; Sujith, S.; Sabarathnam, Balu; Kiran, George Seghal; Selvin, Joseph; Shakir, Chippu; Lipton, A P

doi:10.2478/v10184-010-0001-x

Cited by 38 publications

(24 citation statements)

References 27 publications

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“…The biological activity of seaweeds from the southwest coast of India (Kollam coast) is already reported (Manilal et al, 2009(Manilal et al, , 2009a(Manilal et al, , 2009b(Manilal et al, , 2010(Manilal et al, , 2010a(Manilal et al, , 2011(Manilal et al, , 2011a. In this background, the present study aims to establish the effect of algal-based medicated feed on the survival of experimentally infected shrimps.…”

Section: Introductionmentioning

confidence: 99%

Efficacy of marine green alga Ulva fasciata extract on the management of shrimp bacterial diseases

Selvin¹,

Manilal²,

Sujith³

et al. 2011

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ABSTRACT. Secondary metabolites of the green algae, Ulva fasciata, were tested to determine the efficacy of controlling shrimp bacterial pathogens. Exploratory experiments indicated that an intermediate dose (1 g kg -1 of shrimp) of Ulva in the diet was highly effective at controlling bacterial pathogens of shrimp, as compared to lower (500 mg kg -1 ) and higher (1.5 g kg -1 ) doses. The pilot experiments evaluated the percent of relative protection afforded shrimps treated with Ulva diet and faced with various concentrations of bacterial pathogen. The survival of shrimps treated with Ulva diet was significant (P < 0.01). The present findings indicate that the green U. fasciata may be an excellent source for developing a potent medicated feed for shrimp disease management. Keywords: Penaeus monodon, bacterial diseases, Vibrio, shell disease, proactive management, Ulva fasciata.Eficacia del extracto del alga marina verde Ulva fasciata sobre el manejo de las enfermedades bacterianas en camarones RESUMEN. Metabolites secundario de algas verdes Ulva fasciata fue probado para determinar la eficacia de controlar el camarón pathogens bacterial. Las conclusiones de experimentos exploratorios indicaron que la dosis mediana (1 g kg -1 de camarón) de dieta Ulva era sumamente eficaz en el control de pathogens bacterial de camarón cuando comparado al más abajo (500 mg kg -1 ) y más alto (1,5 g kg) dosis. En los experimentos pilotos, la protección de pariente de por ciento de camarones trató con la dieta Ulva y desafió con varias concentraciones de bacterial patógeno fueron evaluados. La supervivencia de camarones trató con la dieta Ulva era significativo (P < 0,01). Basado en las conclusiones presentes, podría ser deducido que U. verde fasciata puede ser una fuente excelente para desarrollar la comida potente medicinal para la dirección de enfermedad de camarón.

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Section: Introductionmentioning

confidence: 99%

Efficacy of marine green alga Ulva fasciata extract on the management of shrimp bacterial diseases

Selvin¹,

Manilal²,

Sujith³

et al. 2011

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“…, Manilal et al. ). For example, L. dendroidea (as L. obtusa ) produces elatol, which significantly deters herbivory and has been found in Laurencia species worldwide (Pereira et al.…”

Section: Discussionmentioning

confidence: 99%

Seasonal recruitment and survival strategies of Palisada cervicornis comb. nov. (Ceramiales, Rhodophyta) in coral reefs

Collado‐Vides

Durán

Armenis

et al. 2017

Journal of Phycology

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As marine tropical ecosystems deteriorate and lose biodiversity, their communities are shifting to being dominated by a few species, altering ecosystem's functioning and services. Macroalgae are becoming dominant on coral reefs, and are frequently observed outcompeting corals. Turf algal assemblages are the base of energy flow in these systems and one of the most abundant types of macroalgae on coral reefs, but little is known about their biology and diversity. Through molecular and morphological analyses, we identified the turf-forming species Laurencia cervicornis, and by studying seasonal recruitment and the impact of herbivorous fishes on its abundance, we describe its survival strategy. The molecular analyses used a total of 45 rbcL gene sequences including eight current genera within the Laurencia complex and two new sequences of L. cervicornis and strongly support the new combination of Palisada cervicornis comb. nov. In addition, a detailed morphological characterization including the description of reproductive structures is provided. Palisada cervicornis was seen recruiting in all seasons but was typically in low abundance. Specimens grown on tiles in fish exclosure cages were devoured in less than 4 h when offered to fishes. Even though many species of the Laurencia complex have chemicals that deter herbivory, species within the genus Palisada lack feeding deterrents and thus are highly palatable. We suggest that P. cervicornis is a palatable species that seems to survive in the community by obtaining a size-refuge from herbivory within turf communities.

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“…3 Therefore, macroalgae need to adapt quickly to different biotic and abiotic stresses in ecosystem by means of chemical protection mechanisms such as creation of antioxidants to limit oxidation 4 and production of feeding-deterrents to prevent grazing. 5 In the Phaeophyta (brown algae), Dictyota species have been extensively studied and are known to produce interesting natural products. Nevertheless, many of these metabolites had shown to possess broad-spectrum feeding deterrents against herbivores or show other biological activities.…”

Section: Isolation Of Stigmast-524-dien-3-ol From Marine Brown Algaementioning

confidence: 99%

Isolation of stigmast-5,24-dien-3-ol from marine brown algae Sargassum tenerrimum and its antipredatory activity

et al. 2015

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Graphical AbstractIn recent years many sterols with potent biological activity have been identified from marine sources. Here we report the isolation of stigmast-5,24-dien-3-ol (fucosterol) as a major metabolite from bioactive hexane-fraction of Sargassum tenerrimum using different chromatographic techniques. Moreover, the chemical defense of brown algae Sargassum tenerrimum was investigated using feeding assay performed in aquarium and in field.

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Biological activity of the red alga Laurencia brandenii

Cited by 38 publications

References 27 publications

Efficacy of marine green alga Ulva fasciata extract on the management of shrimp bacterial diseases

Efficacy of marine green alga Ulva fasciata extract on the management of shrimp bacterial diseases

Seasonal recruitment and survival strategies of Palisada cervicornis comb. nov. (Ceramiales, Rhodophyta) in coral reefs

Isolation of stigmast-5,24-dien-3-ol from marine brown algae Sargassum tenerrimum and its antipredatory activity

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