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The Effect of Parasitization by Trichodinid Ciliates on the Mortality of Cultured Pacific Fat Sleeper larvae ().
Animals (Basel)
October 2024
Grupo de Investigación en Sanidad Acuícola, Inocuidad y Salud Ambiental (SAISA), Departamento de Acuicultura, Pesca y Recursos Naturales Renovables, Facultad de Acuicultura y Ciencias del Mar, Universidad Técnica de Manabí, Bahía de Caráquez 130104, Ecuador.
Article Synopsis
- Trichodinidae are harmful protozoan parasites that significantly impact fish hatcheries in aquaculture, particularly in South America where information on their effects on native species is scarce.
- The study involved inducing breeding in Pacific fat sleeper fish larvae, leading to the observation of Trichodinid parasites present shortly after hatching.
- The infection contributed to a 58% mortality rate by the fourth day post-hatching, indicating that the presence of these parasites accelerated larval death compared to uninfected individuals.
Effects of different temperatures on the embryonic development of the Lebranche mullet .
Zygote
August 2024
Laboratório de Piscicultura Marinha (LAPMAR), Departamento de Aquicultura, Centro de Ciências Agrárias (CCA), Universidade Federal de Santa Catarina (UFSC), Florianópolis, Brasil.
We herein investigated the influence of temperature on the embryonic development (from fertilisation to hatching) of larvae. For this purpose, oocytes (>600 μm) and sperm were obtained from breeding stock at the laboratory of marine fish culture (LAPMAR). After fertilisation, 1200 eggs were distributed in 12 cylindrical experimental units of 400 mL under four different temperatures 18, 22, 26 and 30 ºC, all in triplicate.
View Article and Find Full Text PDFLoom: A Modular Open-Source Approach to Rapidly Produce Sensor, Actuator, Datalogger Systems.
Sensors (Basel)
May 2024
OPEnS Lab, Oregon State University, Corvallis, OR 97330, USA.
In the face of rising population, erratic climate, resource depletion, and increased exposure to natural hazards, environmental monitoring is increasingly important. Satellite data form most of our observations of Earth. On-the-ground observations based on in situ sensor systems are crucial for these remote measurements to be dependable.
View Article and Find Full Text PDFEmbryonic thermal manipulation: a potential strategy to mitigate heat stress in broiler chickens for sustainable poultry production.
J Anim Sci Biotechnol
June 2024
Department of Human Nutrition, Food and Animal Sciences, College of Tropical Agriculture and Human Resources, University of Hawaii at Manoa, AgSci 216, 1955 East-West Rd, Honolulu, HI, 96822, USA.
Due to high environmental temperatures and climate change, heat stress is a severe concern for poultry health and production, increasing the propensity for food insecurity. With climate change causing higher temperatures and erratic weather patterns in recent years, poultry are increasingly vulnerable to this environmental stressor. To mitigate heat stress, nutritional, genetic, and managerial strategies have been implemented with some success.
View Article and Find Full Text PDFInfluence of exposure scenario on the sensitivity to caffeine.
Environ Sci Pollut Res Int
December 2023
Centre for Environmental and Marine Studies (CESAM), Department of Biology, University of Aveiro, Campus Universitário de Santiago, 3810-193, Aveiro, Portugal.
Article Synopsis
- The chorion functions as a protective barrier for embryos, limiting their exposure to chemicals and making them more sensitive to substances like caffeine only after dechorionation.
- The study assessed the impact of various caffeine concentrations on fish embryos at different developmental stages (2 to 120 hours post-fertilization) and measured heart rates, energy reserves, behavior, and acetylcholinesterase activity.
- Results showed that caffeine increased heart rates and irregular movements, especially affecting behavior and enzyme activity in hatched embryos, highlighting the chorion's role in chemical sensitivity and potential for toxicity testing.
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