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10 results on '"Estante‐Superio, Erish G."'

1. The Value of Grey Literature on Climate Change Research in the Philippines: A Bibliometric Analysis.

Author

Superio, Daryl L., Estante-Superio, Erish G., Floro, Martin F., Abaday-Maglangit, Ethelyn, Paredes, Rolelyn B., De Asis, Ariette A., Estoque, Eileen I., Genodia, Ave Marie P., Superio, Rizzamila R., and Suganob, Edna T.

Subjects
*CLIMATE change in literature, *BIBLIOMETRICS, *CLIMATE change, *GREY literature, *CLIMATE research, *UNIVERSITIES & colleges
Abstract

This study highlights the value of grey literature in climate change research in the Philippines, emphasizing its essential role in understanding the issue within the country's unique socioeconomic and natural environment. A bibliometric analysis of publications in local journals reveals that various types and formats of grey literature are not merely supplementary but essential for communicating climate change, its effects, and adaptation strategies. Despite the prevalence of major publishers, a substantial amount of research in the country continues to be disseminated through local journals. However, these journals face significant challenges, including limited coverage in major databases and concerns about quality, which hinder their global recognition and impact. The findings recommend that the Commission on Higher Education (CHED) enhance the capacity of higher education institutions (HEIs) to improve the quality and credibility of local journals. This improvement would increase their visibility and reach, ensuring that the comprehensive body of Filipino research is preserved, recognized, and utilized in the global discourse on climate change. Consequently, this will foster a more inclusive and informed approach to understanding and addressing this global challenge. [ABSTRACT FROM AUTHOR]

Published
2024
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5. Reproductive quality evaluation of male Indian white prawn Penaeus indicusbroodstock fed diets supplemented with polychaete extracts (Marphysasp.)

Author

Santander-Avanceña, Sheryll S., Traifalgar, Rex Ferdinand M., Estante-Superio, Erish G., Janagap, Steve P., Mamauag, Roger Edward P., Monteclaro, Harold M., Laureta, Liberato V., and Quinitio, Gerald F.

Abstract

ABSTRACTThe present study determined the effect of different polychaete extracts, namely, total soluble fraction (TSF), neutral lipid fraction (NLF) and polar lipid fraction (PLF), in the maturation and sperm quality of male Penaeus indicus. Three levels (0.25, 0.50 and 1.00%) of extracts were included using a 3 × 3 factorial design. Groups fed the basal diet (BD) and fresh-frozen diet served as controls. Extracts in varying doses and control groups did not have a significant effect on broodstock survival (67–87%; p = 0.960), maturation rate (42–68%; p = 0.615), inter-spermatophore period (8–10 days; p = 0.505) or sperm viability (97–100%; p = 0.819). However, sperm counts of broodstock fed BD (11.70 × 106±1.05 × 106per spermatophore) and those fed diets supplemented with polychaete extracts were significantly higher compared to that fed with control fresh diet at 0.73 × 106± .09 × 106(p = 0.001). Spermatophore crude lipid was highest in groups fed 0.25% TSF and 0.25% PLF of broodstock (p =1.0 x10−6 ). Inclusion of TSF (0.25–1.00%) significantly increased the spermatophore crude protein content of broodstock compared to those fed with other diets (p = 1.20 × 10−5). These results demonstrate that NLF and TSF extracts are bioactive components of polychaete which when fed to male P. indicus, can stimulate aspects of sperm production.

Published
2023
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7. Vibrio harveyi-like bacteria associated with fin rot in farmed milkfish Chanos chanos (Forsskal) fingerlings in the Philippines

Author

Estante-Superio, Erish G., Pakingking, Rolando V., Jr., Corre, Valeriano L., Cruz-Lacierda, Erlinda R., Estante-Superio, Erish G., Pakingking, Rolando V., Jr., Corre, Valeriano L., and Cruz-Lacierda, Erlinda R.

Abstract

Milkfish (Chanos chanos) is a commercially important species widely cultured and consumed in the Philippines. It is a hardy fish but due to culture intensification, occurrence of bacterial disease is inevitable. The causative agent of fin rot disease in milkfish fingerlings (total length [TL] = 2.8–4.5 cm) reared in intensive nursery earthen ponds in the Philippines was investigated in the current study. Following biochemical characterization tests and 16S rRNA sequencing, seven isolates recovered from affected fish were identified as Vibrio harveyi-like bacteria. Immersion challenge of milkfish (TL = 5.64 ± 0.76 cm) using a representative strain (CCL-01) at inoculum dose of 108 CFU/mL resulted in fin rot as early as 1-day post-infection (dpi) and concomitant mortalities of 57% ± 0.58 at 7 dpi. Moreover, when milkfish (TL = 6.18 ± 0.66 cm) stocked at 5, 10, and 20 fish/5 L were exposed to the computed 168-h lethal dose (LD50) at 6.63 × 104 CFU/mL, significant mean mortality of 45% ± 1.0 coupled with typical signs of fin rot were particularly obtained in fish stocked at 20 fish/5 L (biomass = 4 g/L) while low mortality of 0% and 7% ± 0.58 were recorded in fish stocked at 5 fish/5 L and 10 fish/5 L, respectively, at 7 dpi. Vibrio harveyi-like bacteria was reisolated in lesions and kidney of all challenged fish while none in any of the control fish. The current data clearly indicate that the isolated V. harveyi-like bacteria is an opportunistic pathogen capable of instigating disease epizootics in milkfish fingerlings stocked at higher densities.

Published
2021

8. Pawikan on FB: Facebook as a Source of Information on the Current State of Sea Turtles in the Philippines with an Emphasis on Mortality

Author

Superio, Daryl L., Luceño, Myrna T., Bendalian, Maria Venessa T., Yap-Zerudo, Anna May A., Ciriaco, Joel A., and Estante-Superio, Erish G.

Subjects
Ecology, Information Management, Fisheries, Conservation, Environment, Pollution
Abstract

Five of the seven species of pawikan (sea turtles) are found in the Philippine seas. These are Olive ridley turtle (Lepidochelys olivacea), Hawksbill turtle (Eretmochelys imbricata), Green sea (Chelonia mydas), Loggerhead turtle (Caretta caretta), and Leatherback turtle (Dermochelys coriacea). All of these are threatened species due to predation (animals and humans), climate change, harvesting of eggs, juveniles and adults, bycatch, and habitat degradation. Thus, to protect the species, several laws, policies, and programs have been passed and implemented by the Philippines government since 1979 (Marine Wild Fauna Watch of the Philippines (MWFWP), 2014). However, despite the efforts to protect the pawikan, reports about dead sea turtles due to various causes are becoming frequent than ever. Furthermore, public posts on Facebook about dead pawikan by private individuals are increasing. On the other hand, data on the mortality causes of sea turtles remain scarce as of the moment. Hence, to provide additional data, this study was conducted.

Published
2020

10. Growth performance, production and economic viability of Indian white shrimp (Penaeus indicus H. Milne Edwards) fed with varying dietary protein levels.

Author

Estante‐Superio, Erish G., Santander‐Avanceña, Sheryll S., de la Peña, Leobert D., Garibay, Esteban S., Gardoce, Rosthon S., and Dayrit, Rheniel

Subjects
*WHITELEG shrimp, *DIETARY proteins, *LOW-protein diet, *PRODUCTION (Economic theory), *WATER quality
Abstract

The growth efficiency, productivity and economic viability of Indian white shrimp (Penaeus indicus) fed with diet containing 40% (CPhigh) and 34% (CPlow) crude protein (CP) levels were determined in a 90‐day grow‐out culture trial. Growth parameters including average body weight (ABW), specific growth rate (SGR), survival and feed conversion ratio (FCR) were not statistically different. CPlow had lower overall shrimp production (797.53 kg/ha, DOC 90), but was not significantly different from CPhigh (843.78 kg/ha, DOC 90). The mean values for the water parameters of both treatments, such as DO, pH, salinity, temperature, TAN, NO2‐N, NO3‐N and PO4‐P, also showed no significant differences. However, the TAN values of CPhigh were consistently higher from day of culture (DOC) 63 and increased significantly (p =.048) at DOC 90. Furthermore, the total bacterial and Vibrio counts in both treatments were not significant throughout the culture period. The economic analysis revealed that CPlow obtained higher net profits (6093 USD/ha/year), return on investment (72%) and discounted benefit–cost ratio (1.73). The current study found that feeding a low protein diet to P. indicus is economically viable and profitable and results in improved growth efficiency and productivity while also improving water quality and lowering nitrogen discharge. [ABSTRACT FROM AUTHOR]

Published
2022
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