scholarly journals The 'maximum growth/optimal food condition' hypothesis: a test for 0-group plaice Pleuronectes platessa in the Dutch Wadden Sea

1993 ◽  
Vol 101 ◽  
pp. 81-90 ◽  
Author(s):  
HW van der Veer ◽  
JIJ Witte
Keyword(s):  
Wadden Sea ◽  
Maximum Growth ◽  
Pleuronectes Platessa ◽  
Food Condition

Further Analysis of Ration and Growth Relationship of Plaice (Pleuronectes platessa)

1969 ◽  
Vol 26 (12) ◽  
pp. 3237-3241 ◽  
Author(s):  
Samir Zaky Rafail
Keyword(s):  
Maximum Growth ◽  
Growth Efficiency ◽  
Growth Increment ◽  
Mean Value ◽  
Pleuronectes Platessa ◽  
Growth Increments ◽  
Power Equation ◽  
The Mean ◽  
Relationship Of ◽  
Weight Groups

Evidence is given that the average daily rations (R) and fortnightly growth increments (ΔW) of six weight groups of Pleuronectes platessa fed on Mytilus edulis are related as in the power equation ±(ΔW−ΔWm) = ±b(|R–Rm|)B. Rm is the daily ration associated with the growth increment (ΔWm) at maximum growth efficiency; b and B are parameters. The power B has a mean value of about 0.5 and shows significant deviations from the mean especially in the case of smaller fish.

A Statistical Analysis of Ration and Growth Relationship of Plaice (Pleuronectes platessa)

1968 ◽  
Vol 25 (4) ◽  
pp. 717-732 ◽  
Author(s):  
Samir Zaky Rafail
Keyword(s):  
Statistical Analysis ◽  
Maximum Growth ◽  
Growth Efficiency ◽  
Growth Increment ◽  
Square Root ◽  
Daily Ration ◽  
Pleuronectes Platessa ◽  
Ration Level ◽  
Growth Increments ◽  
Relationship Of

Dawes (1930, J. Marine Biol. Assoc, 17: 103 and 877) gave extensive data on average daily rations and fortnightly growth increments of Pleuronectes platessa fed on Mytilus edulis. The data are analyzed here in an attempt to formulate a ration and growth increment relationship. Fortnightly growth increments, Δw, were arranged in eight groups according to eight ranges of fish weights. The growth increments in each group, associated with each average daily ration level (R), gave evidence of the normal distribution. Each range of fish weights was characterized by a certain range of daily rations associated with growth increments having homogeneous variance, as well as by a certain daily ration, Rm, associated with maximum growth efficiency. There was evidence that growth increments, of each range of fish weights, were linearly related with [Formula: see text] such that the value of the square root is positive if R > Rm and negative if R < Rm, i.e., [Formula: see text] where a and b are parameters.

Decline in growth rate of juvenile European plaice (Pleuronectes platessa) during summer at nursery beaches along the west coast of Scotland

2013 ◽  
Vol 70 (5) ◽  
pp. 720-734 ◽  
Author(s):  
Benjamin J. Ciotti ◽  
Timothy E. Targett ◽  
Michael T. Burrows
Keyword(s):  
Body Size ◽  
Growth Rates ◽  
West Coast ◽  
Energy Content ◽  
Maximum Growth ◽  
The West ◽  
Extrinsic Factors ◽  
Pleuronectes Platessa ◽  
Growth Variation ◽  
Absolute Growth

This study concludes that declines in growth rates of young-of-the-year European plaice (Pleuronectes platessa) (YOY plaice) during summer vary spatially and between years and that these dynamics are not driven by temperature, body size, or competition. RNA-predicted growth rates of YOY plaice on the west coast of Scotland declined linearly between mid-July and mid-September, with faster declines at beaches and in years where growth rates were initially high. Absolute growth estimates rarely approached ad libitum laboratory rates, and relative declines in growth rates were unrelated to temperature or body size allometry, indicating that maximum growth was rare. However, the absence of inverse relationships between spatial or temporal growth variation and YOY plaice or brown shrimp (Crangon crangon) densities suggests that competition did not limit growth. There were no consistent trends in morphometric condition factor, biochemical composition, or energy content during summer, indicating that apparent growth declines did not result from energy storage and did not result in depletion of energy stores. Influences of extrinsic factors (such as prey conditions, physical disturbance, and predator densities) on the diet, mediated by behavioral decisions to optimize growth with other ecological constraints, require further investigation as causes of growth variation in YOY plaice.

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