Final Preferred Temperature of Juvenile Three-Spined Stickleback Gasterosteus aculeatus (Linnaeus, 1758)

2019 ◽  
Vol 12 (1) ◽  
pp. 83-87
Author(s):  
A. K. Smirnov ◽  
E. S. Smirnova
Keyword(s):  
Gasterosteus Aculeatus ◽  
Preferred Temperature ◽  
Final Preferred Temperature

Temperature Preference and Avoidance Responses of the Crayfish, Orconectes obscurus, and Associated Statistical Problems

1982 ◽  
Vol 39 (4) ◽  
pp. 548-553 ◽  
Author(s):  
Dilip Mathur ◽  
Robert M. Schutsky ◽  
Edmund J. Purdy Jr.
Keyword(s):  
Acclimation Temperature ◽  
Published Data ◽  
Temperature Preference ◽  
Preferred Temperature ◽  
Field Collection ◽  
Method Of Calculation ◽  
Final Preferred Temperature ◽  
Statistical Problems ◽  
Avoidance Responses

Acute temperature selection and avoidance responses of the crayfish, Orconectes obscurus, acclimated at field collection temperatures of 1.5–26.0 °C and determined in a spatial thermal gradient, were similar to those noted for fishes. Acclimation temperature was positively correlated with the acute preferred and avoided temperatures; both were several degrees higher than the acclimation temperature. A large proportion of the total variance in these data was unexplained. Most variable responses occurred at low acclimation temperatures. The estimated final preferred temperature ranged from 29.8 to 33.9 °C depending upon the method of calculation. Methods of estimating final preferenda from acute tests are considered arbitrary due to statistical problems and the associated high variability. Statistical problems were also noted in the determination of avoidance temperatures of crayfish due to nonindependence of observations on the same organism. No differences were noted (P < 0.05) between the preferred or avoided temperatures when the direction of field temperatures was rising or falling. A statistical comparison of the new and published data on this species revealed general similarities, particularly over an acclimation temperature range of 18.0–30.0 °C. The analysis minimizes the importance of site-specific studies on this species using the current acute testing methods.Key words: crayfish, temperature preference, avoidance, populational variation, statistics, experimental and statistical problems

Seasonal and sexual differences in the thermal preferences and movements of American lobsters

2013 ◽  
Vol 70 (11) ◽  
pp. 1650-1657 ◽  
Author(s):  
Steven H. Jury ◽  
Winsor H. Watson
Keyword(s):  
Ambient Temperature ◽  
Homarus Americanus ◽  
Laboratory Studies ◽  
Catch Per Unit Effort ◽  
Preferred Temperature ◽  
Heterogeneous Habitats ◽  
Great Bay Estuary ◽  
Preferred Temperatures ◽  
Final Preferred Temperature ◽  
Thermal Preferences

Thermal preferences of lobsters (Homarus americanus) were determined in the laboratory and compared with seasonal movements and distribution of lobsters in the Great Bay Estuary, New Hampshire. Lobsters preferred 11.0 ± 0.6 °C, or 2.8 ± 0.7 °C warmer than ambient temperature, during the colder months of the year. However, during the warmer months they selected 15.7 ± 0.4 °C, which was 0.2 ± 0.4 °C warmer than the ambient temperature. Overall, the lobsters tested had a final preferred temperature of 15.9 °C, and males selected warmer temperatures than females. Catch per unit effort was highest at sites where temperatures were similar to the temperatures lobsters preferred in the laboratory studies and lowest at sites ≥18 °C or <12 °C. Significantly more males than females were captured in areas with temperatures >16 °C. Lobsters tagged, and subsequently recaptured within 7–35 days, moved relatively little when released into areas where temperatures were similar to their preferred temperatures. Thermal preferences may influence the movement of lobsters in thermally heterogeneous habitats, and climate change is expected to have a major impact on lobster distribution, especially in estuarine and coastal habitats.

The influence of energetic requirements on the preferred temperature of overwintering juvenile Atlantic salmon (Salmo salar)

2001 ◽  
Vol 58 (4) ◽  
pp. 762-768 ◽  
Author(s):  
Ian J Morgan ◽  
Neil B Metcalfe
Keyword(s):  
Atlantic Salmon ◽  
Salmo Salar ◽  
Growth Rates ◽  
Energy Deficit ◽  
Life History Strategies ◽  
Preferred Temperature ◽  
Atlantic Salmon Salmo Salar ◽  
Juvenile Atlantic Salmon ◽  
Significant Difference ◽  
Final Preferred Temperature

We used a horizontal temperature gradient to investigate the effect of alternate life history strategies and nutritional state on the preferred temperature of overwintering juvenile Atlantic salmon (Salmo salar L.). Contrary to our prediction, there was no significant difference in final preferred temperature between juvenile Atlantic salmon that will migrate to sea the following spring (early migrants) and those that show reduced growth and delay migration for at least another year (delayed migrants). Both migrant groups preferentially selected relatively low temperatures (<10°C), likely owing to their low appetite and growth rates. Food deprivation resulted in a significant increase, rather than our predicted decrease, in the final preferred temperature of the juvenile Atlantic salmon of approximately 2°C. We suggest that this is due to the need for an increased foraging effort to offset the projected energy deficit later in the winter. The final preferred temperature of delayed migrants increased from winter to spring, as predicted, coincident with increases in natural food availability and endogenous seasonal increases in appetite and growth rates. We conclude that the preferred temperature of overwintering juvenile Atlantic salmon may be influenced by future energetic requirements rather than the current level of energy reserves.

scholarly journals Temperature preference does not evolve in sticklebacks despite multigenerational exposure to elevated temperatures

2019 ◽  
Author(s):  
Natalie Pilakouta ◽  
Shaun S. Killen ◽  
Bjarni K. Kristjánsson ◽  
Skúli Skúlason ◽  
Jan Lindström ◽  
...  
Keyword(s):  
Climate Change ◽  
Gasterosteus Aculeatus ◽  
Elevated Temperatures ◽  
Thermal Environment ◽  
Adaptation To Climate Change ◽  
Evolutionary Potential ◽  
Temperature Preference ◽  
Preferred Temperature ◽  
Geothermal Activity ◽  
Temperature Preferences

ABSTRACTGiven the threat of climate change to biodiversity, a growing number of studies are investigating the potential for organisms to adapt to rising temperatures through changes in their physiology, morphology, and behaviour. Earlier work has predicted that evolutionary adaptation to climate change will be accompanied by a shift in temperature preferences, but empirical evidence for this is limited. Here, we test whether exposure to a warm environment over multiple generations has led to the evolution of higher preferred temperatures in the wild. We have taken advantage of a ‘natural experiment’ in Iceland, where freshwater populations of threespine sticklebacks (Gasterosteus aculeatus) are found in waters warmed by geothermal activity year-round (warm habitats), adjacent to populations in ambient-temperature lakes (cold habitats). We hypothesised that sticklebacks from warm habitats would prefer higher water temperatures than those from cold habitats, but we found no support for this hypothesis. Fish from both warm and cold habitats had an average preferred temperature of 13°C, which is considerably lower than the temperatures experienced by fish in warm habitats for most of the year. Our results therefore challenge the assumption that temperature preferences in ectotherms will readily evolve as a response to climate change. Furthermore, the fact that warm-habitat fish are able to persist at relatively high temperatures despite a lower temperature preference suggests that preferred temperature may be a poor indicator of a population’s evolutionary potential and capacity to adapt to a novel thermal environment.

scholarly journals Internal embryonic development in a non-copulatory, egg-laying teleost, the three-spined stickleback, Gasterosteus aculeatus

2019 ◽  
Vol 9 (1) ◽  
Author(s):  
Laura L. Dean ◽  
Shaun Robertson ◽  
Muayad Mahmud ◽  
Andrew D. C. MacColl
Keyword(s):  
Embryonic Development ◽  
Gasterosteus Aculeatus ◽  
Egg Laying

scholarly journals Continental vs. Global Niche-Based Modelling of Freshwater Species’ Distributions: How Big Are the Differences in the Estimated Climate Change Effects?

Water ◽  
2021 ◽  
Vol 13 (6) ◽  
pp. 816
Author(s):  
Danijela Markovic ◽  
Jörg Freyhof ◽  
Oskar Kärcher
Keyword(s):  
Climate Change ◽  
Thermal Properties ◽  
Safety Margin ◽  
Thermal Response ◽  
Future Climate Change ◽  
Freshwater Species ◽  
Response Curves ◽  
Preferred Temperature ◽  
Continental Scale ◽  
Management Actions

Thermal response curves that depict the probability of occurrence along a thermal gradient are used to derive various species’ thermal properties and abilities to cope with warming. However, different thermal responses can be expected for different portions of a species range. We focus on differences in thermal response curves (TRCs) and thermal niche requirements for four freshwater fishes (Coregonus sardinella, Pungitius pungitius, Rutilus rutilus, Salvelinus alpinus) native to Europe at (1) the global and (2) European continental scale. European ranges captured only a portion of the global thermal range with major differences in the minimum (Tmin), maximum (Tmax) and average temperature (Tav) of the respective distributions. Further investigations of the model-derived preferred temperature (Tpref), warming tolerance (WT = Tmax − Tpref), safety margin (SM = Tpref − Tav) and the future climatic impact showed substantially differing results. All considered thermal properties either were under- or overestimated at the European level. Our results highlight that, although continental analyses have an impressive spatial extent, they might deliver misleading estimates of species thermal niches and future climate change impacts, if they do not cover the full species ranges. Studies and management actions should therefore favor whole global range distribution data for analyzing species responses to environmental gradients.

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