Anicia Hurtado - Academia.edu (original) (raw)

Papers by Anicia Hurtado

Research paper thumbnail of Growing micropropagated Kappaphycus alvarezii and mitigating ice-ice disease and the incidence of macro-epiphytes using an extract of the brown alga Ascophyllum nodosum at three different seeding techniques

Journal of Applied Phycology, Aug 21, 2023

Research paper thumbnail of Temporal variation in the incidence of seaweed health problems affecting farmed Kappaphycus striatus in relation to environmental conditions in shallow waters

Journal of applied phycology, Apr 18, 2024

Research paper thumbnail of イソハナビErythrocladia subintegra(紅藻類ウシケノリ目)の生活史の研究〔英文〕

Research paper thumbnail of Rheological Properties of Agar from Gracilariopsis heteroclada (Zhang et Xia) Zhang et Xia (Gracilariales, Rhodophyta) Treated with Powdered Commercial Lime and Aqueous Alkaline Solution

Botanica Marina, 1992

Rheological properties were measured for 1.5% agar gels from Gracilariopsis heteroclada pre-treat... more Rheological properties were measured for 1.5% agar gels from Gracilariopsis heteroclada pre-treated with powdered commercial lime (CaCO 3 ) during sun drying, and a combination of two alkaline solutions during water-bath heating in the laboratory. All samples were subjected to a one or three hours of heating prior to extraction. Slightly higher agar yield were obtained from samples treated with lime while drying (2.9-4.5%) than from seaweed (2.1 -3.8%) treated with alkaline solutions in the laboratory. Better rheological (breaking strength, cohesiveness, breaking energy, and rigidity) and physical properties (dynamic gelling and melting temperatures) were obtained from laboratory treated after a 3-hour treatment

Research paper thumbnail of Distribution of the tropical seaweed crops Eucheuma spp. and Kappaphycus spp. inside and outside of their native range

Research paper thumbnail of Biyah diin in pagparagan sin pagtanuman agal agal iban pag'ayad ha pag' urulan sin kabuhi: Binhi atawa tanumun agal agal, manga mangangaun iban kumakangii' iban sakit, manga anib atawa makamula' iban biyah diin in pagpahilunnah sin anib atawa piligru ha pagtanum agal agal

United Kingdom Research and Innovation-Global Challenge Research Fund (UKRI-GCRF), Mar 1, 2021

Research paper thumbnail of An international evaluation of biosecurity management capacity in the seaweed aquaculture industry

Journal of Environmental Management, 2022

Seaweeds form the second largest global aquaculture product in volume, and despite rapid growth o... more Seaweeds form the second largest global aquaculture product in volume, and despite rapid growth of the sector over the last 25 years, production and quality in top producing regions is becoming increasingly limited due to disease and pest outbreaks, the spread of non-native cultivars and the degradation of genetic health due to inbreeding. Most notably, the lack of biosecurity measures leading to disease and pest outbreaks are reported to cause the most significant production losses in the seaweed industry. This study uses the Knowledge, Attitude and Practice (KAP) survey tool to quantify and compare biosecurity cross-culturally, in two major red seaweed producing countries, the Philippines and Tanzania. Both countries have significantly different political contexts and the seaweed sector sits within two very different value chains. Seaweed-based commodities from these countries, however, enters the same international market for carrageenan, a thickening agent used for a variety of products globally. This study uses the KAP survey tool to assess currently-adopted biosecurity control measures and understand how potential policy strategies could be developed on an international scale. Farmers from both producing countries have good biosecurity knowledge. In Tanzania 64% farmers scored Fair or Good, and in the Philippines this was 95%. Corresponding scores in practices were lower, 85% Poor for Tanzania, and 88% Fair for the Philippines, indicating there is a lack of resources for farmers to implement additional practices. The information gathered using the KAP tool in the context of the global seaweed industry can be used to facilitate compromise between science, policy and practice whilst taking into consideration smaller-scale regional challenges. Given the results from the seaweed industry were similar to that of smallholder agricultural sectors, it is suggested that governmental programs to incentivise biosecurity in smallholder rural agriculture could be adapted for the seaweed industry. This study also demonstrates the potential use of the KAP survey, as a tool to accurately compare biosecurity challenges faced by farmers in different aquaculture sectors globally, and to encourage alignment in international approaches to aquaculture biosecurity policies.

Research paper thumbnail of Pangangasiwa sa taniman at mga hakbang pangbayo-sekyuridad para sa Eucheumatoids: Mga kultibar, peste at sakit, mga risgo o peligro at mga paraan sa pangasiwaan nito

United Kingdom Research and Innovation-Global Challenge Research Fund (UKRI-GCRF), Mar 1, 2021

Research paper thumbnail of Time for applications of biostimulants in phyconomy: Seaweed Extracts for Enhanced Cultivation of Seaweeds (SEECS)

Elsevier eBooks, 2020

Abstract Biostimulants are increasingly and extensively applied for the benefit of enhanced, terr... more Abstract Biostimulants are increasingly and extensively applied for the benefit of enhanced, terrestrial agronomic production, crop health and quality. Extracts of various seaweeds are classified as important biostimulatory inputs. Various seaweeds are important marine crops, with multiple phyconomic values. However, as with their terrestrial counterparts, there are increasing incidences of crop damage and even failures due to incidents of diseases and pests, now in cultivated seaweeds. Changing physical conditions in the marine environment may also have negative influences on the success of some seaweed crops. These events have serious social and economic consequences, especially for residents of economically challenged coastal areas. This chapter presents evidence that some extracts, of some seaweeds, may be useful biostimulants for enhanced seaweed crop production and health. These are indicators that other seaweed extracts need investigation. There are interesting parallels of the benefits of extracts of seaweeds when applied to either land plants, or to other seaweeds. Understanding the modes of actions of these extracts, when applied to plants and macroalgae, should be rich areas of research for further investigation. An outline of research undertaken to date is provided and the important need for further efforts into the applications of seaweed extracts for enhanced seaweed cultivation is stressed.

Research paper thumbnail of Seaweed production: Farming Kappaphycus in the Philippines

Research paper thumbnail of Research on Molluscs and Seaweeds

Research paper thumbnail of Sargassum Studies in Currimao, Ilocos Norte, Northern Philippines I. Seasonal Variations in the Biomass of Sargassum carpophyllum J. Agardh, Sargassum ilicifolium (Turner) C. Agardh and Sargassum siliquosum J. Agardh (Phaeophyta, Sargassaceae)

Research paper thumbnail of Harvesting Gracilariopsis heteroclada (Gracilariales, Rhodophyta) in Iloilo, Philippines

The Philippine journal of science, 1993

Gracilariopsis heteroclada thalli were planted in a 1 m2 ditch along a drainage canal at Leganes,... more Gracilariopsis heteroclada thalli were planted in a 1 m2 ditch along a drainage canal at Leganes, Iloilo, Philippines. Monthly growth rate and production were calculated to determine the effect of harvesting on the regeneration capacity of the plant. After 30-day growth period, all plants were harvested at 25%, 50%, 75%, and 100% of the total available biomass. Though highest growth rate was observed at 100% (8.7%), it took three months for the plants to regenerate and obtain a considerable biomass. Positive growths were obtained when plants were harvested at 75% (5.6%) during the entire growth period. Negative growth rates observed both at 25 and 50% harvests

Research paper thumbnail of Distribution and symptoms of epiphyte infection in major carrageenophyte-producing farms

Springer eBooks, Feb 10, 2009

Research paper thumbnail of Occurrence of Polysiphonia epiphytes in Kappaphycus farms at Calaguas Is., Camarines Norte, Phillippines

Springer eBooks, May 6, 2008

... Fletcher RL (1995) Epiphytism and fouling in Gracilaria cultivation; an overview. ... RF, San... more ... Fletcher RL (1995) Epiphytism and fouling in Gracilaria cultivation; an overview. ... RF, Sanares R, Castro-Mallare MTR de (2001) The seasonality and economic feasibility of cultivat-ingKappaphycus alvarezii in ... Largo DB (2002) Recent developments in seaweed diseases. ...

Research paper thumbnail of Plantlet regeneration of Kappaphycus alvarezii var. adik-adik (Rhodophyta) by tissue culture

ABSTRACT Three color morphotypes of Kappaphycus alvarezii var. adik-adik (brown, green and red) c... more ABSTRACT Three color morphotypes of Kappaphycus alvarezii var. adik-adik (brown, green and red) collected from a farming area in Tictauan Is., Zamboanga City, Philippines were used as explants in the study in order to micropropagate ‘new’ plants. Individual sections of sterile Kappaphycus alvarezii var. adik-adik, initially cultured in a 48-well culture plate containing ESS/2 + E3 + PGR, released callus cells after 4–5 days of incubation at 23–25°C, 13:11H LD cycle and 10–15 μmol photons m−2 s−1 light intensity. True calli were formed after 29–35 days following dense formation of filaments or undifferentiated round cells at the medullary and inner cortical layers of the section. Plantlets (2–3 mm long) of Kappaphycus alvarezii var. adik-adik were able to regenerate after 98, 150 and 177 days in-vitro among the reds, greens, and browns, respectively. This study established successful methods for the production and regeneration of tissue explants of Kappaphycus alvarezii var. adik-adik which can possibly be used to mass produce ‘new’ cultivars for land- and sea-based nurseries as sources for commercial farming.

Research paper thumbnail of Application of brown seaweed-derived agro biostimulant to the commercial farming of the red seaweed Kappaphycus alvarezii in India: Growth enhancement and production of quality raw material

Algal Research-Biomass Biofuels and Bioproducts, Apr 1, 2023

Research paper thumbnail of Assessment of the seaweed-seagrass resource of Mararison Island, Culasi, Antique, Philippines*

Phycological Research, Sep 1, 1998

Research paper thumbnail of Pagdumala sa uma sa guso ug mga lakang para sa bayo-sekuridad: Semilya, mga peste ug sakit-sakit, mga risgo ug pagdumala niini

United Kingdom Research and Innovation-Global Challenge Research Fund (UKRI-GCRF), Mar 1, 2021

Research paper thumbnail of Farm management and biosecurity measures of Eucheumatoids: Cultivars, pest and disease, risks and risk managements

United Kingdom Research and Innovation-Global Challenge Research Fund (UKRI-GCRF), Mar 1, 2021

Research paper thumbnail of Growing micropropagated Kappaphycus alvarezii and mitigating ice-ice disease and the incidence of macro-epiphytes using an extract of the brown alga Ascophyllum nodosum at three different seeding techniques

Journal of Applied Phycology, Aug 21, 2023

Research paper thumbnail of Temporal variation in the incidence of seaweed health problems affecting farmed Kappaphycus striatus in relation to environmental conditions in shallow waters

Journal of applied phycology, Apr 18, 2024

Research paper thumbnail of イソハナビErythrocladia subintegra(紅藻類ウシケノリ目)の生活史の研究〔英文〕

Research paper thumbnail of Rheological Properties of Agar from Gracilariopsis heteroclada (Zhang et Xia) Zhang et Xia (Gracilariales, Rhodophyta) Treated with Powdered Commercial Lime and Aqueous Alkaline Solution

Botanica Marina, 1992

Rheological properties were measured for 1.5% agar gels from Gracilariopsis heteroclada pre-treat... more Rheological properties were measured for 1.5% agar gels from Gracilariopsis heteroclada pre-treated with powdered commercial lime (CaCO 3 ) during sun drying, and a combination of two alkaline solutions during water-bath heating in the laboratory. All samples were subjected to a one or three hours of heating prior to extraction. Slightly higher agar yield were obtained from samples treated with lime while drying (2.9-4.5%) than from seaweed (2.1 -3.8%) treated with alkaline solutions in the laboratory. Better rheological (breaking strength, cohesiveness, breaking energy, and rigidity) and physical properties (dynamic gelling and melting temperatures) were obtained from laboratory treated after a 3-hour treatment

Research paper thumbnail of Distribution of the tropical seaweed crops Eucheuma spp. and Kappaphycus spp. inside and outside of their native range

Research paper thumbnail of Biyah diin in pagparagan sin pagtanuman agal agal iban pag'ayad ha pag' urulan sin kabuhi: Binhi atawa tanumun agal agal, manga mangangaun iban kumakangii' iban sakit, manga anib atawa makamula' iban biyah diin in pagpahilunnah sin anib atawa piligru ha pagtanum agal agal

United Kingdom Research and Innovation-Global Challenge Research Fund (UKRI-GCRF), Mar 1, 2021

Research paper thumbnail of An international evaluation of biosecurity management capacity in the seaweed aquaculture industry

Journal of Environmental Management, 2022

Seaweeds form the second largest global aquaculture product in volume, and despite rapid growth o... more Seaweeds form the second largest global aquaculture product in volume, and despite rapid growth of the sector over the last 25 years, production and quality in top producing regions is becoming increasingly limited due to disease and pest outbreaks, the spread of non-native cultivars and the degradation of genetic health due to inbreeding. Most notably, the lack of biosecurity measures leading to disease and pest outbreaks are reported to cause the most significant production losses in the seaweed industry. This study uses the Knowledge, Attitude and Practice (KAP) survey tool to quantify and compare biosecurity cross-culturally, in two major red seaweed producing countries, the Philippines and Tanzania. Both countries have significantly different political contexts and the seaweed sector sits within two very different value chains. Seaweed-based commodities from these countries, however, enters the same international market for carrageenan, a thickening agent used for a variety of products globally. This study uses the KAP survey tool to assess currently-adopted biosecurity control measures and understand how potential policy strategies could be developed on an international scale. Farmers from both producing countries have good biosecurity knowledge. In Tanzania 64% farmers scored Fair or Good, and in the Philippines this was 95%. Corresponding scores in practices were lower, 85% Poor for Tanzania, and 88% Fair for the Philippines, indicating there is a lack of resources for farmers to implement additional practices. The information gathered using the KAP tool in the context of the global seaweed industry can be used to facilitate compromise between science, policy and practice whilst taking into consideration smaller-scale regional challenges. Given the results from the seaweed industry were similar to that of smallholder agricultural sectors, it is suggested that governmental programs to incentivise biosecurity in smallholder rural agriculture could be adapted for the seaweed industry. This study also demonstrates the potential use of the KAP survey, as a tool to accurately compare biosecurity challenges faced by farmers in different aquaculture sectors globally, and to encourage alignment in international approaches to aquaculture biosecurity policies.

Research paper thumbnail of Pangangasiwa sa taniman at mga hakbang pangbayo-sekyuridad para sa Eucheumatoids: Mga kultibar, peste at sakit, mga risgo o peligro at mga paraan sa pangasiwaan nito

United Kingdom Research and Innovation-Global Challenge Research Fund (UKRI-GCRF), Mar 1, 2021

Research paper thumbnail of Time for applications of biostimulants in phyconomy: Seaweed Extracts for Enhanced Cultivation of Seaweeds (SEECS)

Elsevier eBooks, 2020

Abstract Biostimulants are increasingly and extensively applied for the benefit of enhanced, terr... more Abstract Biostimulants are increasingly and extensively applied for the benefit of enhanced, terrestrial agronomic production, crop health and quality. Extracts of various seaweeds are classified as important biostimulatory inputs. Various seaweeds are important marine crops, with multiple phyconomic values. However, as with their terrestrial counterparts, there are increasing incidences of crop damage and even failures due to incidents of diseases and pests, now in cultivated seaweeds. Changing physical conditions in the marine environment may also have negative influences on the success of some seaweed crops. These events have serious social and economic consequences, especially for residents of economically challenged coastal areas. This chapter presents evidence that some extracts, of some seaweeds, may be useful biostimulants for enhanced seaweed crop production and health. These are indicators that other seaweed extracts need investigation. There are interesting parallels of the benefits of extracts of seaweeds when applied to either land plants, or to other seaweeds. Understanding the modes of actions of these extracts, when applied to plants and macroalgae, should be rich areas of research for further investigation. An outline of research undertaken to date is provided and the important need for further efforts into the applications of seaweed extracts for enhanced seaweed cultivation is stressed.

Research paper thumbnail of Seaweed production: Farming Kappaphycus in the Philippines

Research paper thumbnail of Research on Molluscs and Seaweeds

Research paper thumbnail of Sargassum Studies in Currimao, Ilocos Norte, Northern Philippines I. Seasonal Variations in the Biomass of Sargassum carpophyllum J. Agardh, Sargassum ilicifolium (Turner) C. Agardh and Sargassum siliquosum J. Agardh (Phaeophyta, Sargassaceae)

Research paper thumbnail of Harvesting Gracilariopsis heteroclada (Gracilariales, Rhodophyta) in Iloilo, Philippines

The Philippine journal of science, 1993

Gracilariopsis heteroclada thalli were planted in a 1 m2 ditch along a drainage canal at Leganes,... more Gracilariopsis heteroclada thalli were planted in a 1 m2 ditch along a drainage canal at Leganes, Iloilo, Philippines. Monthly growth rate and production were calculated to determine the effect of harvesting on the regeneration capacity of the plant. After 30-day growth period, all plants were harvested at 25%, 50%, 75%, and 100% of the total available biomass. Though highest growth rate was observed at 100% (8.7%), it took three months for the plants to regenerate and obtain a considerable biomass. Positive growths were obtained when plants were harvested at 75% (5.6%) during the entire growth period. Negative growth rates observed both at 25 and 50% harvests

Research paper thumbnail of Distribution and symptoms of epiphyte infection in major carrageenophyte-producing farms

Springer eBooks, Feb 10, 2009

Research paper thumbnail of Occurrence of Polysiphonia epiphytes in Kappaphycus farms at Calaguas Is., Camarines Norte, Phillippines

Springer eBooks, May 6, 2008

... Fletcher RL (1995) Epiphytism and fouling in Gracilaria cultivation; an overview. ... RF, San... more ... Fletcher RL (1995) Epiphytism and fouling in Gracilaria cultivation; an overview. ... RF, Sanares R, Castro-Mallare MTR de (2001) The seasonality and economic feasibility of cultivat-ingKappaphycus alvarezii in ... Largo DB (2002) Recent developments in seaweed diseases. ...

Research paper thumbnail of Plantlet regeneration of Kappaphycus alvarezii var. adik-adik (Rhodophyta) by tissue culture

ABSTRACT Three color morphotypes of Kappaphycus alvarezii var. adik-adik (brown, green and red) c... more ABSTRACT Three color morphotypes of Kappaphycus alvarezii var. adik-adik (brown, green and red) collected from a farming area in Tictauan Is., Zamboanga City, Philippines were used as explants in the study in order to micropropagate ‘new’ plants. Individual sections of sterile Kappaphycus alvarezii var. adik-adik, initially cultured in a 48-well culture plate containing ESS/2 + E3 + PGR, released callus cells after 4–5 days of incubation at 23–25°C, 13:11H LD cycle and 10–15 μmol photons m−2 s−1 light intensity. True calli were formed after 29–35 days following dense formation of filaments or undifferentiated round cells at the medullary and inner cortical layers of the section. Plantlets (2–3 mm long) of Kappaphycus alvarezii var. adik-adik were able to regenerate after 98, 150 and 177 days in-vitro among the reds, greens, and browns, respectively. This study established successful methods for the production and regeneration of tissue explants of Kappaphycus alvarezii var. adik-adik which can possibly be used to mass produce ‘new’ cultivars for land- and sea-based nurseries as sources for commercial farming.

Research paper thumbnail of Application of brown seaweed-derived agro biostimulant to the commercial farming of the red seaweed Kappaphycus alvarezii in India: Growth enhancement and production of quality raw material

Algal Research-Biomass Biofuels and Bioproducts, Apr 1, 2023

Research paper thumbnail of Assessment of the seaweed-seagrass resource of Mararison Island, Culasi, Antique, Philippines*

Phycological Research, Sep 1, 1998

Research paper thumbnail of Pagdumala sa uma sa guso ug mga lakang para sa bayo-sekuridad: Semilya, mga peste ug sakit-sakit, mga risgo ug pagdumala niini

United Kingdom Research and Innovation-Global Challenge Research Fund (UKRI-GCRF), Mar 1, 2021

Research paper thumbnail of Farm management and biosecurity measures of Eucheumatoids: Cultivars, pest and disease, risks and risk managements

United Kingdom Research and Innovation-Global Challenge Research Fund (UKRI-GCRF), Mar 1, 2021