High Water Temperature Influences on Foraging Responses and Thermal Deaths of Dolly Varden Salvelinus malma and White-spotted Charr S. leucomaenis in a Laboratory

1997 ◽  
Vol 63 (1) ◽  
pp. 6-8 ◽  
Author(s):  
Tatsuya Takami ◽  
Fumiaki Kitano ◽  
Shigeru Nakano
Keyword(s):  
Water Temperature ◽  
High Water ◽  
High Water Temperature ◽  
Dolly Varden ◽  
Salvelinus Malma

scholarly journals The Monthly Variation Process of Water Temperature in Jiaozhou Bay

2019 ◽  
Vol 136 ◽  
pp. 06015
Author(s):  
Dongfang Yang ◽  
Haoyuan Ren ◽  
Dong Yang ◽  
Longlei Zhang ◽  
Haixia Li
Keyword(s):  
Water Temperature ◽  
Jiaozhou Bay ◽  
High Water ◽  
Water Bodies ◽  
Interval Length ◽  
Monthly Variation ◽  
High Water Temperature ◽  
Water Field ◽  
Variation Process ◽  
Peak Value

According to the investigation materials in the water field of Jiaozhou Bay from May to October 1980, this paper studies the water temperature of Jiaozhou Bay and the monthly variation. The results show that in each monthfrom May to October, the water temperature varies from 10.80 to 26.53 °C in the waters of Jiaozhou Bay, and the interval length of water temperature is 15.73 °C. This paper determines the changing curve of the high or low value of the water temperature ateach month and establishes the corresponding simulation equation.The high water temperature reaches a maximum of 26.53 °C in August, and the low water temperature reaches a maximum of 24.69 °C in August. In the water bodies of Jiaozhou Bay, the high or low water temperature both reaches its highest value in August. In June, the increasing rate of peak value in water temperature is the fastest, and the increasing rate of low value in water temperature is relatively fast. In October, the decreasing rate of the peak water temperature is relatively fast, and decreasing rateof the lowest value in water temperature is the fastest. From May to August, the high (low) water temperature is on the rise in Jiaozhou Bay. The high water temperature appears in the western waters of the top of bay and the western waters inside of bay mouth. The low water temperature appears in the eastern and southern waters outside of bay mouth. In September and October, the high (low) water temperature in the Jiaozhou Bay water bodies is decreasing. The high water temperature appears in the eastern and southern waters outside of bay mouth, and the low water temperature appears in the western waters of the bayhead.

Osmoregulatory Ability of Wild Coho Salmon (Oncorhynchus kisutch) and Dolly Varden Char (Salvelinus malma) Smolts

1988 ◽  
Vol 45 (8) ◽  
pp. 1487-1490 ◽  
Author(s):  
Scott W. Johnson ◽  
Jonathan Heifetz
Keyword(s):  
Water Temperature ◽  
Coho Salmon ◽  
Oncorhynchus Kisutch ◽  
Dolly Varden ◽  
Salvelinus Malma ◽  
Small Stream ◽  
Fish Size ◽  
Dolly Varden Char ◽  
Seawater Challenge ◽  
Osmoregulatory Ability

Osmoregulatory ability of wild coho salmon (Oncorhynchus kisutch) and Dolly Varden char (Salvelinus malma) smolts migrating from a small stream in southeastern Alaska was assessed by plasma Na+ levels after a 24-h seawater challenge. Osmoregulatory ability of coho salmon was unaffected by time of out-migration, water temperature, and fish size. Osmoregulatory ability of Dolly Varden char was apparently affected by time of out-migration or water temperature but not by fish size. Char migrating in the first half of the migration period, when water temperature was usually < 8.0 °C, had lower plasma Na+ levels than did char migrating in the second half when temperatures were [Formula: see text]. A plasma Na+ threshold of 170 mmol∙L−1, used by others to separate smolts from silvery parr, indicated that 70% of the coho salmon and 80% of the Dolly Varden char we sampled were physiologically prepared to enter seawater. The remaining fish may have suffered some level of osmoregulatory stress.

scholarly journals The breeding ecology of the pipefish Nerophis lumbriciformis and its relation to latitude and water temperature

2001 ◽  
Vol 81 (6) ◽  
pp. 1031-1033 ◽  
Author(s):  
N. Monteiro ◽  
V.C. Almada ◽  
A.M. Santos ◽  
M.N. Vieira
Keyword(s):  
Water Temperature ◽  
Breeding Season ◽  
Marked Reduction ◽  
High Water ◽  
Inhibitory Effect ◽  
Breeding Ecology ◽  
High Water Temperature ◽  
Temporal Differences ◽  
Breeding Activity ◽  
Different Temperatures

The breeding season of Nerophis lumbriciformis (Pisces: Syngnathidae), has not yet been determined for the southernmost part of its range. A total of 863 individuals was examined between March 1997 and November 1999. In Portugal, the breeding season of this species occurs throughout the year, with a marked reduction during summer and autumn, whilst in Britain it occurs from May to September. Despite these temporal differences, the water temperature at which breeding takes place is similar in the two areas (13–16°C). Together with preliminary laboratory observations with animals kept at different temperatures, these data support the hypothesis that the decrease in breeding activity during summer and autumn in Portugal is due to an inhibitory effect of high water temperature.

scholarly journals Effect of High Water Temperature on Betanodavirus Infection of Fingerling Humpback Grouper Cromileptes altivelis

2007 ◽  
Vol 42 (4) ◽  
pp. 219-221 ◽  
Author(s):  
Kei Yuasa ◽  
Isti Koesharyani ◽  
Ketut Mahardika
Keyword(s):  
Water Temperature ◽  
High Water ◽  
High Water Temperature
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