Tracking wild sockeye salmon smolts to the ocean reveals distinct regions of nocturnal movement and high mortality

2016 ◽  
pp. n/a-n/a ◽  
Author(s):  
Timothy D. Clark ◽  
Nathan B. Furey ◽  
Erin L. Rechisky ◽  
Marika K. Gale ◽  
Ken M. Jeffries ◽  
...  
Keyword(s):  
High Mortality ◽  
Sockeye Salmon ◽  
Nocturnal Movement

Tracking wild sockeye salmon smolts to the ocean reveals distinct regions of nocturnal movement and high mortality

2016 ◽  
Vol 26 (4) ◽  
pp. 959-978 ◽  
Author(s):  
Timothy D. Clark ◽  
Nathan B. Furey ◽  
Erin L. Rechisky ◽  
Marika K. Gale ◽  
Ken M. Jeffries ◽  
...  
Keyword(s):  
High Mortality ◽  
Sockeye Salmon ◽  
Nocturnal Movement

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.

Role of estuarine rearing for sockeye salmon in Alaska (USA)

2013 ◽  
Vol 481 ◽  
pp. 211-223 ◽  
Author(s):  
RK Simmons ◽  
TP Quinn ◽  
LW Seeb ◽  
DE Schindler ◽  
R Hilborn
Keyword(s):  
Sockeye Salmon

Coastal marine and in-river migration behaviour of adult sockeye salmon en route to spawning grounds

2014 ◽  
Vol 496 ◽  
pp. 71-84 ◽  
Author(s):  
SM Wilson ◽  
SG Hinch ◽  
SM Drenner ◽  
EG Martins ◽  
NB Furey ◽  
...  
Keyword(s):  
Sockeye Salmon ◽  
Spawning Grounds ◽  
Migration Behaviour ◽  
Coastal Marine ◽  
River Migration

FAMILIAL DIABETES AND PERINATAL MORTALITY IN INFANTS OF DIABETIC MOTHERS

1961 ◽  
Vol 37 (3) ◽  
pp. 441-444
Author(s):  
A. Nygaard ◽  
M. Felbo ◽  
J. Pedersen
Keyword(s):  
Perinatal Mortality ◽  
High Mortality ◽  
Term Treatment ◽  
Infants Of Diabetic Mothers ◽  
Long Term Treatment ◽  
Diabetic Mothers

ABSTRACT In a study of 173 pregnancies in 130 diabetic mothers of White's groups B, C and D who had received long-term treatment during pregnancy, the authors found cases of diabetes – in addition to the mother – in the maternal family, in the father and his family, or in the maternal as well as paternal family in a total of 100 pregnancies (57 %). The perinatal mortality was only slightly – and not significantly – higher among infants whose families included other diabetics than the mother. This higher mortality was found only among male infants of whom there was a preponderance in pregnancies with familial diabetes, but this was also not statistically significant. Thus, the result indirectly indicates that the primary cause of the high mortality among the infants of diabetic women must be the fact that the foetus develops in a diabetic environment.

Inovasi Teknologi Pembuatan Pakan Udang dengan Penambahan Tepung Kopasanda (Chromolaena odorata L.) di Desa Tamangapa Kecamatan Ma’rang Kab. Pangkep

2019 ◽  
Vol 3 (2) ◽  
pp. 140
Author(s):  
Harlina Harlina ◽  
Hadijah Hadijah ◽  
Kamaruddin Kamaruddin ◽  
Ernaningsih Ernaningsih
Keyword(s):  
Mortality Rate ◽  
Community Service ◽  
High Mortality ◽  
Raw Materials ◽  
Development Program ◽  
Chromolaena Odorata ◽  
Farmed Fish ◽  
Counseling Training ◽  
Shrimp Feed ◽  
Simple Technology

Tamangapa village, Ma’rang district is part of the community development program conducted by Universitas Muslim Indonesia in Pangkajene Kepulauan regency. The local shrimp farmers of Tamangapa village have been facing major issue due to expensive artificial feed and high mortality rate. In order to solve the needs of feed and high mortality rate for farmed fish or shrimp, the source of the natural ingredients using kopasanda leaves Chromolaena odorata L is required. The use of a natural ingredient is also used to prevent the vibriosis using simple technology such as the utilization of local raw materials which is affordable and locally available. The present community service aimed to provide the proper knowledge and skills to members of the fish/shrimp farmer’s group through counseling, training and mentoring. This community service program encouraged the local farmers to be able to utilize the local raw materials as a source of shrimp feed, use the feed pellet machine, and packaging leading to independent feed production. The participatory training method, lectures, forum group discussions, and practices of making shrimp feed and packaging were applied. The Implementation of the Community Partnership Program of Shrimp and Fish Cultivation Groups is independently able to produce organic fish or shrimp feed for farmer’s group leading to higher productivity of aquaculture.

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