Temperature-Dependent Growth and Production by a Marine Copepod

1981 ◽  
Vol 38 (1) ◽  
pp. 77-83 ◽  
Author(s):  
I. A. McLaren ◽  
C. J. Corkett
Keyword(s):  
Growth Rates ◽  
Life Cycles ◽  
Temperature Dependent ◽  
Marine Copepod ◽  
Development Times ◽  
Body Sizes ◽  
Eurytemora Herdmani ◽  
Growth Production ◽  
Dependent Growth ◽  
Specific Growth Rates

Highly synchronous cohorts of the copepod Eurytemora herdmani at a station near Halifax, Nova Scotia, were followed in samples taken during late July and early August, 1980. Individuals from the same population were reared in the laboratory from copepodite I (CI) to adult in conditions of food satiation. Development times and adult body sizes in nature were about the same as predicted for comparable temperatures in the laboratory. Weight increments between CI and adult male in samples from nature were exponential. Females became heavier, because of eggs, after CIII, but developed more slowly, so that their specific growth rates were about the same as for males. Production estimated from weights and stage increments in successive samples (cohort method) was adequately predicted from biomasses in samples and temperature-dependent development times from the laboratory. Production of egg matter by adult females was also adequately predicted by temperature-dependent growth rates of younger stages. These "rules" of development, growth, and production need wider empirical testing and theoretical justification.Key words: Copepoda, temperature, life cycles, development, growth, production

Growth Patterns in Bluegill (Lepomis macrochirus) and Pumpkinseed (L. gibbosus) Sunfish: Environmental Variation and the Importance of Ontogenetic Niche Shifts

1988 ◽  
Vol 45 (1) ◽  
pp. 17-26 ◽  
Author(s):  
Craig W. Osenberg ◽  
Earl E. Werner ◽  
Gary G. Mittelbach ◽  
Donald J. Hall
Keyword(s):  
Growth Rates ◽  
Lepomis Macrochirus ◽  
Growth Patterns ◽  
Adult Performance ◽  
Littoral Habitat ◽  
Ontogenetic Niche Shifts ◽  
Niche Shifts ◽  
Dependent Growth ◽  
Specific Growth Rates ◽  
Recent Experimental Work

Size-specific growth rates were determined for bluegill (Lepomis macrochirus) and pumpkinseed (L. gibbosus) sunfish collected between 1978 and 1985 in nine lakes in southwestern Michigan. Variation in growth rates was attributable to lake effects as well as an interaction between lake and year effects. Year effects explained none of the observed variation, suggesting that growth rates were influenced more by unique lake differences than by annual climatic differences. Analyses of the covariation in growth among different size-classes of bluegill and pumpkinseed revealed that small bluegill (< 55 mm standard length (SL)) and small pumpkinseed (< 40 mm SL) exhibited similar responses to environmental factors, while large bluegill (> 55 mm SL) and large pumpkinseed (> 50 mm SL) responded differently. These breaks in the growth patterns coincide with the sizes at which each species exhibits an ontogenetic shift in diet. Comparison of growth rates and resource densities suggests that the growth rates of the large fishes were food limited. Small fishes showed significant density-dependent growth. This correlative evidence for competition is in agreement with recent experimental work. We suggest that the competition between juvenile sunfishes is driven by the effects of adult resources on adult performance and the eventual recruitment of juveniles into the littoral habitat.

Comparison of size-at-age of larval Atlantic cod (Gadus morhua) from different populations based on size- and temperature-dependent growth models

2005 ◽  
Vol 62 (5) ◽  
pp. 1037-1052 ◽  
Author(s):  
A Folkvord
Keyword(s):  
Growth Rates ◽  
Laboratory Experiments ◽  
Gadus Morhua ◽  
Atlantic Cod ◽  
Growth Models ◽  
Larval Growth ◽  
Growth Potential ◽  
Temperature History ◽  
Temperature Dependent ◽  
Dependent Growth

This study presents the first intraspecific evaluation of larval growth performance across several different experimental scales, environments, and regions of a marine fish species. Size- and temperature-dependent growth models for larval and early juvenile Atlantic cod (Gadus morhua) are developed based on selected laboratory experiments with cod fed in excess. Observed sizes-at-age of cod from several experiments and stocks are compared with predictions from the models using initial size and ambient temperature history as inputs. Comparisons with results from other laboratory experiments reveal that the model predictions represent relatively high growth rates. Results from enclosure experiments under controlled seminatural conditions generally provide growth rates similar to those predicted from the models. The models therefore produce suitable reference growth predictions against which field-based growth estimates can be compared. These comparisons suggest that surviving cod larvae in the sea typically grow at rates close to their size- and temperature-dependent capacity. This suggests that climatic influences will strongly affect the year-to-year variations in growth of cod during their early life history owing to their markedly temperature-dependent growth potential.

Temperature-dependent development in Pseudocalanus species

1989 ◽  
Vol 67 (3) ◽  
pp. 559-564 ◽  
Author(s):  
I. A. McLaren ◽  
J.-M. Sévigny ◽  
C. J. Corkett
Keyword(s):  
Embryonic Development ◽  
Residual Variance ◽  
Temperature Dependent ◽  
Species Ranges ◽  
Dependent Development ◽  
Development Times ◽  
Body Sizes ◽  
The Times ◽  
Environmental Temperatures

The duration of embryonic development and that of well-fed older stages were determined for Pseudocalanus acuspes, P. minutus, P. moultoni, and P. newmani. Excluding abnormal individuals, the times for older stages were lognormally distributed, with similar variances among species, stages, and temperatures. Some residual variance occurred among families reared together. Copepod rearings should take these sources of variance into account. Development times (D) were described well by Bělehrádek's temperature (T) function, D = a(T − α)−b, with b = 2.05 for all species from previous studies, and α and a fitted for embryonic development. Only a needed to be fitted for older stages (i.e., "equiproportional" development). Relative times to given stages at all temperatures (i.e., relative values of a) were similar in three species, but P. minutus deviated from this pattern. Values of α were directly related to presumed environmental temperatures in the species' ranges. Values of a were directly related to egg and body sizes of the different species. The temperature functions can be used to predict the lengths of the generations in these four species in nature when food is adequate.

Modelling the temperature dependent growth rates of planktic foraminifera

2009 ◽  
Vol 70 (1-2) ◽  
pp. 1-7 ◽  
Author(s):  
Fabien Lombard ◽  
Laurent Labeyrie ◽  
Elisabeth Michel ◽  
Howard J. Spero ◽  
David W. Lea
Keyword(s):  
Growth Rates ◽  
Temperature Dependent ◽  
Planktic Foraminifera ◽  
Dependent Growth

scholarly journals Projected effects of ocean warming on an iconic pelagic fish and its fishery

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Vicenç Moltó ◽  
Miquel Palmer ◽  
Andrés Ospina-Álvarez ◽  
Sílvia Pérez-Mayol ◽  
Amina Besbes Benseddik ◽  
...  
Keyword(s):  
Average Length ◽  
Fish Length ◽  
Temperature Dependent ◽  
Rcp Scenarios ◽  
Sea Temperature ◽  
Coryphaena Hippurus ◽  
Body Sizes ◽  
Rcp 8.5 ◽  
Dependent Growth ◽  
Distribution Of Fish

AbstractIncreasing sea temperature is a driver of change for many fish traits, particularly for fast-growing epipelagic species with short life spans. With warming, altered spawning phenology and faster growth may produce substantially larger body sizes of the new cohort, affecting fishery productivity. We present an individual-based model (IBM) that predicts the distribution of fish length at catch under observed and projected thermal scenarios, accounting for mortality, temperature-dependent spawning phenology, temperature- and photoperiod- dependent growth. This IBM was demonstrated with Coryphaena hippurus (common dolphinfish), a circumglobally-distributed and highly thermophilic species sustaining commercial and recreational fisheries where it is present. The model projected a 13.2% increase in the average length at catch under marine heatwave conditions compared to the current thermal regime (1995–2005 average). Projections under RCP scenarios 4.5 and 8.5 by the end of the century led to 5.1% and 12.8% increase in average length, respectively. Furthermore, these thermal scenarios affected spawning phenology differently, producing higher variance in body size under RCP 8.5 scenario with respect to marine heatwave conditions. This study highlights how the environmental effects of climate change can alter the distribution of species length at catch.

scholarly journals Correlation of 16S Ribosomal DNA Signature Sequences with Temperature-Dependent Growth Rates of Mesophilic and Psychrotolerant Strains of the Bacillus cereusGroup

1999 ◽  
Vol 181 (8) ◽  
pp. 2624-2630 ◽  
Author(s):  
Birgit M. Prüß ◽  
Kevin P. Francis ◽  
Felix von Stetten ◽  
Siegfried Scherer
Keyword(s):  
16S Rrna ◽  
Ribosomal Dna ◽  
Growth Rates ◽  
Low Temperatures ◽  
Genomic Dna ◽  
Temperature Dependent ◽  
16S Ribosomal Dna ◽  
Wide Range ◽  
Signature Sequences ◽  
Dependent Growth

ABSTRACT Sequences of the 16S ribosomal DNA (rDNA) from psychrotolerant and mesophilic strains of the Bacillus cereus group revealed signatures which were specific for these two thermal groups of bacteria. Further analysis of the genomic DNA from a wide range of food and soil isolates showed that B. cereus group strains have between 6 and 10 copies of 16S rDNA. Moreover, a number of these environmental strains have both rDNA operons with psychrotolerant signatures and rDNA operons with mesophilic signatures. The ability of these isolates to grow at low temperatures correlates with the prevalence of rDNA operons with psychrotolerant signatures, indicating specific nucleotides within the 16S rRNA to play a role in psychrotolerance.

Temperature-dependent growth rates of larval midges (Diptera: Chironomidae) from a southeastern U.S. stream

Hydrobiologia ◽  
2005 ◽  
Vol 544 (1) ◽  
pp. 69-75 ◽  
Author(s):  
Steven K Reynolds ◽  
Arthur C Benke
Keyword(s):  
Growth Rates ◽  
Temperature Dependent ◽  
Dependent Growth

Latitudinal patterns in temperature-dependent growth rates of a forest pathogen

2018 ◽  
Vol 72 ◽  
pp. 39-43 ◽  
Author(s):  
Carla S. Pimentel ◽  
Matthew P. Ayres
Keyword(s):  
Growth Rates ◽  
Temperature Dependent ◽  
Forest Pathogen ◽  
Latitudinal Patterns ◽  
Dependent Growth
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