Kappaphycus alvarezii (Gigartinales, Rhodophyta) cultivated in Brazil: is it only one species?

Barros‐Barreto, Maria Beatriz Barbosa de; Marinho, Luciana Cavalcante; Reis, Renata Perpetuo; Mata, Camila Souza da; Ferreira, Paulo Cavalcante Gomes

doi:10.1007/s10811-012-9952-8

Cited by 22 publications

(8 citation statements)

References 18 publications

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“…Two new K. alvarezii haplotypes were also recognized: KALV-5 (n = 1) and KALV-6 (n = 3). These haplotypes were 1-bp different from KALV-3 and 2-bp different from KALV-4 haplotypes and the widely cultivated K. alvarezii haplotype 3 (Zuccarello et al 2006, De Barros-Barreto et al 2013, Halling et al 2013, Lim et al 2014, Dumilag et al 2016a. Haplotypes KALV-3, KALV-4, KALV-5, and KALV-6, appeared to be biogeographically localized in Guiuan, Eastern Samar as they form a moderately supported subclade.…”

Section: Kappaphycus Alvareziimentioning

confidence: 86%

“…Based on the concatenated COI-5P-cox2-3 spacer sequences, there are now 19 K. alvarezii and 12 K. striatus haplotypes identified (Lim et al 2014, Dumilag et al 2016a, 2016b. Despite the abundance of reported Kappaphycus haplotypes, only 14 of these (including the K. malesianus haplotype MY216 from Lim et al 2014) represent cultivated varieties worldwide, with haplotypes KALV-A5 (haplotype 3 for cox2-3 spacer of K. alvarezii) and KSA (haplotype 89 for cox2-3 spacer of K. striatus) comprising the bulk of farmed haplotypes (Zuccarello et al 2006, De Barros-Barreto et al 2013, Halling et al 2013, Lim et al 2014, Dumilag et al 2016a, 2016b) (Supplementary Fig. S5).…”

Section: Kappaphycus Alvareziimentioning

confidence: 99%

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Discovery of novel haplotypes from wild populations of Kappaphycus (Gigartinales, Rhodophyta) in the Philippines

Roleda¹,

Aguinaldo²,

Crisostomo³

et al. 2021

ALGAE

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As the global demand for the carrageenophyte Kappaphycus is steadily increasing, its overall productivity, carrageenan quality, and disease resistance are gradually declining. In the face of this dilemma, wild Kappaphycus populations are viewed as sources of new cultivars that could potentially enhance production; therefore, assessment of their diversity is crucial. This study highlights the morphological and genetic diversity of wild Kappaphycus species obtained from two sites in the Philippines. Nucleotide alignments of available 5′ region of the mitochondrial cytochrome c oxidase subunit I (COI-5P) and cox2-3 spacer sequences of Kappaphycus confirmed the presence of K. alvarezii in Guiuan, Eastern Samar and K. striatus in Bolinao, Pangasinan. Based on the concatenated sequences of the COI-5P and the cox2-3 spacer, nine novel haplotypes were observed along with other published haplotypes. However, there was no relationship between haplotype and morphology. These newly recognized haplotypes indicate a reservoir of unutilized wild genotypes in the Philippines, which could be taken advantage of in developing new cultivars with superior traits. DNA barcodes generated from this study effectively expand the existing databank of Kappaphycus sequences and can provide insights in elucidating the genetic diversity of Kappaphycus species in the country.

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Section: Kappaphycus Alvareziimentioning

confidence: 86%

Section: Kappaphycus Alvareziimentioning

confidence: 99%

Discovery of novel haplotypes from wild populations of Kappaphycus (Gigartinales, Rhodophyta) in the Philippines

Roleda¹,

Aguinaldo²,

Crisostomo³

et al. 2021

ALGAE

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“…Kappaphycus alvarezii (Doty) L. M. Liao seaweed is a major economically important fishery commodity (Ask & Azanza, 2002;Bixler & Porse, 2010;Bindu & Levine, 2011;Zuniga-Jara & Marin-Riffo, 2015).The development of the K. alvarezii culture is very fast due to the demand for carrageenan, which is commonly used as the main raw material in many industrial activities (Munoz et al, 2004;Yunque et al, 2011;Barbosa et al, 2013;Hurtado et al, 2015;Porse & Rudolph, 2017).…”

Section: Introductionmentioning

confidence: 99%

Untitled

2020

Hidrobiológica

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al conocimiento de este grupo en la región. Métodos: Los muestreos se realizaron empleando diversas artes de pesca, en los principales ríos y tributarios que se encuentran en el municipio. Resultados: Se recolectaron 2,430 peces, correspondientes a 38 especies, agrupadas en 31 géneros, 19 familias y 12 órdenes. Las familias con la mayor riqueza específica fueron Cichlidae y Poeciliidae con nueve y seis especies. Priapella intermedia fue la especie más abundante (30.1% del total), seguida por Astyanax finitimus (13.3%) y Pseudoxiphophorus bimaculatus (10.3%). Con respecto a los aspectos biogeográficos del conjunto íctico, se observó un predominio de especies neotropicales (91.9%), dos especies de origen neártico (Ictalurus meridionalis e Ictiobus meridionalis) y cuatro vicarias (Atherinella sallei, Cathorops cf. kailolae, Eugerres mexicanus y Strongylura hubbsi), 31 especies se encuentran evaluadas en alguna categoría de riesgo y dos son exóticas. Conclusiones: La ictiofauna de Santa María Chimalapa es similar al de los cuerpos acuáticos presentes en selvas del sur de México. Son necesarios estudios ecológicos, de conservación e impacto antropogénico para establecer estrategias sustentables de conservación.

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Section: Introductionmentioning

confidence: 99%

Horizontal transmission of ice-ice disease in seaweed Kappaphycus alvarezii (Doty) L. M. Liao (Gigartinales, Rhodophyta)

Aris

Labenua

2020

Hidrobiológica

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Background: Kappaphycus alvarezii seaweed is a major commodity of important economic value fishery cultivation that has been developed in many countries. The demand for K. alvarezii seaweed continues to increase because it produces carrageenan which is commonly used as the main raw material in many industrial activities. However, K. alvarezii seaweed farming is inseparable from several obstacles. In the seaweed culture system, ice-ice disease is a major obstacle because it can harm the cultivation business. Ice-ice disease causes a decrease in seaweed production. Bacteria play a role in the development of ice-ice disease in seaweed cultivation. Aquatic organisms infected with bacteria indirectly cause damage to tissue. The spread of bacterial diseases in aquatic organisms can occur vertically or horizontally. Goals: This research aims to study the horizontal transmission of ice-ice disease on growth, carrageenan content, and changes in the structure of the K. alvarezii seaweed tissue which were tested in-vivo. Methods: This study uses healthy seaweed thalus weighing 35g and seaweed thallus affected by ice-ice weighing 30g (A), 35g (B), 40g (C) and 45g (D).The parameters observed were morphological changes, carrageenan content and tissue changes with histological analysis. Result: The results of this research indicate that the transmission of ice-ice disease can occur horizontally from thallus affected by ice-ice to healthy thallus. This transmission causes discoloration that shows symptoms of ice-ice attack on healthy seaweed K. alvarezii. This discoloration is accompanied by a decrease in thallus weight. Transmission also causes changes in the structure of the tissue in the form of lysis in the tissue and reduce the content of carrageenan in K. alvarezii seaweed. Conclusions: Based on this research, it can be concluded that the spread of ice-ice disease in seaweed causes color change, weight loss, changes in tissue structure, and reduce the quality of carrageenan.

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Kappaphycus alvarezii (Gigartinales, Rhodophyta) cultivated in Brazil: is it only one species?

Cited by 22 publications

References 18 publications

Discovery of novel haplotypes from wild populations of Kappaphycus (Gigartinales, Rhodophyta) in the Philippines

Discovery of novel haplotypes from wild populations of Kappaphycus (Gigartinales, Rhodophyta) in the Philippines

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Horizontal transmission of ice-ice disease in seaweed Kappaphycus alvarezii (Doty) L. M. Liao (Gigartinales, Rhodophyta)

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