Ontogenetic Dietary Shift of Water Snakes (Nerodia rhombifera) in a Fish Hatchery

Copeia ◽  
1984 ◽  
Vol 1984 (2) ◽  
pp. 550 ◽  
Author(s):  
Michael V. Plummer ◽  
Jo M. Goy
Keyword(s):  
Fish Hatchery ◽  
Dietary Shift ◽  
Water Snakes

Emamectin benzoate is a safe and effective anthelmintic against coelomic nematode Philometra rubra in striped bass Morone saxatilis

2020 ◽  
Vol 142 ◽  
pp. 47-53
Author(s):  
K Béland ◽  
G Séguin ◽  
S Lair
Keyword(s):  
Mortality Rate ◽  
Striped Bass ◽  
High Mortality ◽  
Morone Saxatilis ◽  
Treatment Results ◽  
Emamectin Benzoate ◽  
Once Daily ◽  
Fish Hatchery ◽  
Parasitic Burden

An unusually high mortality rate due to verminous (Philometra rubra) coelomitis was documented in wild-hatched striped bass Morone saxatilis raised in a fish hatchery as part of a stock restoration program. To decrease the parasitic burden and therefore potentially minimize mortality, the effectiveness of 2 different anthelmintics was evaluated. Two trials were conducted on wild-collected fingerlings naturally infected by P. rubra. In 2006, 144 yearling fish were randomly assigned to 4 experimental groups: (1) levamisole (Levasol®) at 2 mg l-1 via immersion for 8 h once weekly for 3 wk; (2) levamisole at a dose of 2.5 mg kg-1 biomass via feed once daily for 7 d; (3) emamectin benzoate (Slice®) at a dose of 0.05 mg kg-1 biomass via feed once daily for 7 d; and (4) control. Emamectin successfully eliminated live nematodes in 84.9% of the fish, whereas the administration of levamisole, either via immersion or feed, was not successful in significantly reducing the number of live P. rubra. In 2007, the administration of the same dosage of emamectin to approximately 1000 naturally infected yearling striped bass was associated with a 100% mortality rate of P. rubra in the 30 fish randomly examined 5 wk after the beginning of the treatment. Results of these trials indicate that, at the dosage used, the administration of emamectin at the end of the summer is safe for striped bass yearlings and considerably reduces the prevalence and intensity of the infection by this parasite.

Studi pengembangan unit perbenihan ikan laut di Pulau Gumilamo Kabupaten Halmahera Utara

2015 ◽  
Vol 3 (3) ◽  
Author(s):  
Yitzhak Koloba ◽  
Hengky J Sinjal ◽  
Ockstan Kalesaran
Keyword(s):  
Local Government ◽  
Development Strategy ◽  
Marine Fish ◽  
Government Regulation ◽  
Swot Analysis ◽  
Fishing Effort ◽  
Government Support ◽  
Fish Hatchery ◽  
The Development Strategy ◽  
Internal And External Factors

This research intended  to evaluate the development strategy of Marine Fish Hatchery Unit at Gumilamo Island, North Halmahera. Analysis SWOT was used to determine the development strategy. Data were collected by questionnaire, interview and literature relevant to the research. SWOT analysis showed the internal and external factors that affected the development of Marine Fish Hatchery at Gumilamo island. The strenght were location, water quality , local government support, and availability of seeds and feed. Weakness were lack of public interest, lack of extension and human resources. Opportunity were the high value of the sale, business opportunities and  local government regulation. Treat were  dependence on fishing effort and safety.   Keywords : hatchery, gumilamo, north halmahera, SWOT analysis

scholarly journals Moving Consumers along the Innovation Adoption Curve: A New Approach to Accelerate the Shift toward a More Sustainable Diet

2021 ◽  
Vol 13 (8) ◽  
pp. 4477
Author(s):  
Antje Gonera ◽  
Erik Svanes ◽  
Annechen Bahr Bugge ◽  
Malin Myrset Hatlebakk ◽  
Katja-Maria Prexl ◽  
...  
Keyword(s):  
Diffusion Of Innovation ◽  
Food System ◽  
Eating Habits ◽  
Innovation Adoption ◽  
Environmental Footprint ◽  
New Approach ◽  
Targeted Interventions ◽  
Dietary Shift ◽  
Research And Innovation ◽  
Sustainable Diet

Unsustainable food production and consumption contribute to greenhouse gas emissions and global warming. Adopting a more plant-based diet has been identified as a necessary change toward a more sustainable food system. In response to the call for transdisciplinary research on the sustainability of food consumption, this exploratory study combined consumer science, nutrition and health, sustainability research, and innovation to develop a new approach that can accelerate the shift toward a more sustainable diet. Quantitative data on the eating habits and attitudes of 1785 consumers was combined with data on environmental impacts via a life cycle assessment for different consumer segments. We studied the sustainable dietary shift using the diffusion of innovation theory, as well as qualitative and quantitative approaches. We identified and characterized seven consumer segments and related habits and attitudes toward an increase in plant-based foods and meat reduction. The nutritional quality and the environmental footprint of the segments’ dinners showed large differences. The results indicate that moving consumers along the innovation adoption curve with targeted interventions can reduce the environmental footprint of people’s diets and improve dietary health. We also discussed the value of user-centric innovation tools for the translation of insights into interventions by working with personas.

scholarly journals Testing for a dietary shift in the Early Cretaceous ceratopsian dinosaur Psittacosaurus lujiatunensis

Palaeontology ◽  
2021 ◽  
Vol 64 (3) ◽  
pp. 371-384
Author(s):  
Damiano Landi ◽  
Logan King ◽  
Qi Zhao ◽  
Emily J. Rayfield ◽  
Michael J. Benton
Keyword(s):  
Early Cretaceous ◽  
Dietary Shift

Circadian Metabolic Cycles in Eastern Cottonmouths and Brown Water Snakes

1993 ◽  
Vol 27 (3) ◽  
pp. 341 ◽  
Author(s):  
Charles R. Blem ◽  
Karen B. Killeen
Keyword(s):  
Water Snakes
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