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Pathogenic Photobacterium sp. induce mortality in the lined seahorse (Hippocampus erectus): First case report from China
No full textIn August 2019, an unknown disease was first reported in farmed seahorses (Hippocampus erectus) in Binhai New Area in Tianjin city, China, with a cumulative mortality rate of 25% within seven days of onset. The main symptoms of the affected seahorses were discoloration of the body surface, abdominal distention, kidney erosion, and intestinal enlargement. Histopathological observation revealed apparent damage to the diseased seahorses' intestines, liver, and kidneys. Strains HM-2019-5 and HM-2019-6 were isolated from diseased kidneys and identified as Photobacterium sp. based on physiological and biochemical tests and 16S rDNA sequencing analysis. Artificial infection experiments demonstrated that strain HM-2019-5 could cause a 90% morbidity rate in healthy seahorses. Antimicrobial susceptibility tests showed that HM-2019-5 and HM-2019-6 were resistant to 13 of 16 antimicrobial agents tested. This is the first report of photobacterial disease in a seahorse to the best of our knowledge
A technical and economic evaluation of supplemental feeding strategies for Nile tilapia (Oreochromis niloticus L.) reared in lake-based cages
Get PDFTilapia cage farming in eutrophic lakes uses low stocking densities since tilapias can thrive mainly on natural food or minimal supplementary feeding. For semi-intensive Nile tilapia cage culture, feeding strategies to improve productivity are adopted based on technical viability and cost efficiency, as assessed in the present study. Tilapia fingerlings stocked in triplicate cages per treatment were reared in Laguna de Bay, Philippines for five months, one run each during the dry and wet seasons. The treatments were: I – UNFED or no feeding; II - FED, fish fed for the entire 155 days; III - D45, fish fed from day 45 to harvest; and IV - D75, or fish fed from day 75 to harvest. Average weight gain or AWG (153.18 g and 225.85g, for dry and wet seasons, respectively) were highest in FED. Growth parameters in all fed treatments were significantly higher (p<0.05) than in UNFED for both seasons. Survival rates were higher during the wet season (66-70%) compared to the dry season (35-37%). Moreover, in the wet season, when the lake’s primary productivity is low, full feeding can be done without compromising lake water quality. Results showed that it favored high AWG, survival, reasonable market price, and profit
Oral History Finding Aid: Nona Beamer
Get PDFOral history finding aid of interviews with Winona Kapuailohiamanonokalani Desha Beamer who was born in Honolulu, Kona, O'ahu in 1923. Interview footage and transcripts are available in the Hula Preservation Society library. For questions regarding materials referenced herein, and/or Access & Use of content, please contact them
Oral History Finding Aid: Dorothy Beyer
Get PDFOral history finding aid of interviews with Dorothy "Dottie" Johnston Beyer who was born in Volcano, Puna, Hawai'i Island in 1925. Interview footage and transcripts are available in the Hula Preservation Society library. For questions regarding materials referenced herein, and/or Access & Use of content, please contact them
Oral History Finding Aid: Myrtle K. Hilo
Get PDFOral history finding aid of interviews with Myrtle Keahiaihonua Kalanikahea Hilo who was born in Kalihi, Kona, O'ahu in 1929. Interview footage and transcripts are available in the Hula Preservation Society library. For questions regarding materials referenced herein, and/or Access & Use of content, please contact them
Oral History Finding Aid: Irene Lum Ho
Get PDFOral history finding aid of interviews with Irene May Wakinekona Lum Ho who was born in Nuʻuanu, Kona, Oʻahu in 1926. Interview footage and transcripts are available in the Hula Preservation Society library. For questions regarding materials referenced herein, and/or Access & Use of content, please contact them
Oral History Finding Aid: Lauae Maluo Yung
Get PDFOral history finding aid of interviews with Lauae Kapolilauaeomakana Maluo Yung who was born in Waiākea, Hilo, Hawaiʻi in 1926. Interview footage and transcripts are available in the Hula Preservation Society library. For questions regarding materials referenced herein, and/or Access & Use of content, please contact them
Vietnamese Linguistics: State of the Field
Get PDFThis volume contains 10 papers from the workshop "Vietnamese Linguistics, Typology and Language Universals" of the Yenching Institute at Harvard on April 16 to 17, 2021