Optimized temporal sampling designs of the Weibull growth curve with extensions to the von Bertalanffy model

2019 ◽  
Vol 30 (6) ◽  
Author(s):  
J. Swintek ◽  
M. Etterson ◽  
K. Flynn ◽  
R. Johnson
Keyword(s):  
Growth Curve ◽  
Von Bertalanffy ◽  
Von Bertalanffy Model ◽  
Temporal Sampling

scholarly journals Growth of the tambaqui Colossoma macropomum (Cuvier) (Characiformes: Characidae): which is the best model?

2005 ◽  
Vol 65 (1) ◽  
pp. 129-139 ◽  
Author(s):  
M. A. H Penna ◽  
M. A Villacorta-Corrêa ◽  
T. Walter ◽  
M. Petrere-JR
Keyword(s):  
Growth Model ◽  
Negative Correlation ◽  
The Other ◽  
Data Sources ◽  
Von Bertalanffy ◽  
Data Set ◽  
Colossoma Macropomum ◽  
Von Bertalanffy Model ◽  
Estimated Parameters ◽  
Schnute Model

In order to decide which is the best growth model for the tambaqui Colossoma macropomum Cuvier, 1818, we utilized 249 and 256 length-at-age ring readings in otholiths and scales respectively, for the same sample of individuals. The Schnute model was utilized and it is concluded that the Von Bertalanffy model is the most adequate for these data, because it proved highly stable for the data set, and only slightly sensitive to the initial values of the estimated parameters. The phi' values estimated from five different data sources presented a CV = 4.78%. The numerical discrepancies between these values are of not much concern due to the high negative correlation between k and L<FONT FACE=Symbol>¥</FONT> viz, so that when one of them increases, the other decreases and the final result in phi' remains nearly unchanged.

A Formulation of the von Bertalanffy Growth Curve when the Growth Rate is Roughly Constant

1969 ◽  
Vol 26 (11) ◽  
pp. 3069-3072 ◽  
Author(s):  
William Knight
Keyword(s):  
Growth Rate ◽  
Growth Curve ◽  
Von Bertalanffy ◽  
Alternate Form ◽  
Usual Form

The author contends that the parameters of any growth curve should be a direct description of the graphical appearance of the data. For growth that is even approximately linear this is not true of the von Bertalanffy curve in its usual form (von Bertalanffy, Human Biol. 10: 181–213, 1938). On the above grounds, an alternate form of the von Bertalanffy curve for use in such instances is proposed.

Age, growth and mortality of the garfish, Belone belone (L. 1761) in the Adriatic Sea

2012 ◽  
Vol 93 (2) ◽  
pp. 365-372 ◽  
Author(s):  
Barbara Zorica ◽  
Vanja Čikeš Keč
Keyword(s):  
Adriatic Sea ◽  
Growth Parameters ◽  
Fork Length ◽  
Mortality Rates ◽  
Von Bertalanffy ◽  
Positive Allometry ◽  
Von Bertalanffy Model ◽  
Total Length ◽  
Belone Belone ◽  
Conservation And Management

A sample of 3393 garfish, Belone belone (Linnaeus, 1761) was captured using a seine net between January 2003 and December 2008, along the eastern Adriatic Sea. The range in total length was 20.8–75.4 cm and in weight was 12.21–639.25 g. Length–length equations for converting size measurements (standard length and fork length to total length (TL)) were linear. In the length–weight relationship, positive allometry was established (b = 3.4818). Age, determined from sagittal otoliths, ranged from 1+ to 8+ years. The estimated von Bertalanffy model growth parameters for garfish were L∞ = 90.3 cm, K = 0.158 year−1, t0 = −0.109. Otolith weight was endorsed as a possible age predictor, as it showed highly exponential correlation with total garfish length and age (Wo = 0.0012 TL2.189; Wo = 0.568t1.486). These findings were used to examine mortality rates and exploitation in order to improve conservation and management of this pelagic species.

scholarly journals Structure and population dynamics of the secondary burrower crayfish Procambarus acanthophorus from a tropical Mexican wetland

2016 ◽  
Vol 94 (7) ◽  
pp. 479-488
Author(s):  
J.A. Viccon-Pale ◽  
P. Ortega ◽  
L. Mendoza-Vargas ◽  
P. Castilla-Hernández ◽  
A. López-Cuevas ◽  
...  
Keyword(s):  
Population Dynamics ◽  
Sex Ratio ◽  
Growth Parameters ◽  
Von Bertalanffy ◽  
Frequency Distributions ◽  
Structure And Dynamics ◽  
Von Bertalanffy Model ◽  
Cephalothorax Length ◽  
Flood Period ◽  
Class Dynamic

Catch size, sex ratio, structure and dynamics, as well as mortality, of a population of the secondary burrower crayfish Procambarus acanthophorus Villalobos, 1948, from tropical wetland La Mixtequilla, Veracruz, Mexico, were examined. Monthly samples were taken from artisanal commercial captures. A total of 2141 individuals were caught. Although the total female:male ratio was 0.86, variation in sex ratios have also been found in monthly catches. Monthly polymodal frequency distributions of cephalothorax length (CL) were analyzed by the Bhattacharya method. Population catches consisted of six CL classes. The CL-class dynamic may show adaptations to the flood period. Growth parameters were estimated using the von Bertalanffy model. For females, K = 0.39 year−1, CL∞ = 57.30 mm, [Formula: see text] = 3.11, and tmax = 6.73 years were found; it is appropriate that for males, K = 0.40 year−1, CL∞ = 59.00 mm, [Formula: see text] = 3.14, and tmax = 6.59 years were found. We also examined whether water temperature influences the catches or sex ratio.

Growth and reproductive parameters of Kalliapseudes schubartii in the estuarine region of the Lagoa dos Patos (southern Brazil)

2003 ◽  
Vol 83 (5) ◽  
pp. 931-935 ◽  
Author(s):  
Duane B. Fonseca ◽  
Fernando D'Incao
Keyword(s):  
Reproductive Activity ◽  
Individual Growth ◽  
Von Bertalanffy ◽  
Reproductive Parameters ◽  
Southern Brazil ◽  
Relative Growth ◽  
Von Bertalanffy Model ◽  
Soft Bottoms ◽  
Estuarine Region ◽  
Growth And Reproduction

Kalliapseudes schubartii (Crustacea: Tanaidacea) is a tube dwelling invertebrate living in estuarine soft bottoms with distribution along the south-east and southern Brazilian and Uruguayan coasts. Individual growth, and reproduction were examined by taking samples for a year in the estuarine region of the Lagoa dos Patos (southern Brazil). The von Bertalanffy model described growth of K. schubartii (K=4.54 y−1, L∞=13.22 mm). Reproductive activity was observed in spring and summer. No relationship was observed between total length of females and brood size. Eggs, embryos, and mancas were often observed in a marsupium. Relative growth analysis showed two levels of allometry in the growth of chelipeds of males.

Multi-criteria approach to estimate the growth curve in the marine shrimp, Penaeus vannamei Boone, 1931 (Decapoda, Penaeidae)

Crustaceana ◽  
2017 ◽  
Vol 90 (11-12) ◽  
pp. 1517-1531
Author(s):  
E. Alberto Aragón-Noriega ◽  
Jaime E. Mendivil-Mendoza ◽  
Edgar Alcántara-Razo ◽  
Wenceslao Valenzuela-Quiñónez ◽  
José A. Félix-Ortiz
Keyword(s):  
Growth Curve ◽  
Gulf Of California ◽  
Size Variation ◽  
Gompertz Model ◽  
Model Parameters ◽  
Penaeus Vannamei ◽  
Von Bertalanffy ◽  
Growth Compensation ◽  
Marine Shrimp ◽  
Compensation Approach

The aim of the present study was to test the hypothesis that size variation among individuals of one particular age affects the precise assessment of anticipated growth curve trajectories and their parameters for the marine shrimp, Penaeus vannamei Boone, 1931. The data came from shrimp farmed in earthen ponds of an aquaculture farm located in the Gulf of California. Five asymptotic models were applied to averaged length-at-age data: specialized Von Bertalanffy, generalized Von Bertalanffy, Gompertz, Logistic and Johnson. These models were parametrized considering two criteria: (1) variability in length-at-age () decreases with age (growth compensation approach), (2) constant variance (“normal” and “fat tail”). The model parameters were computed with the maximum likelihood criterion. The corrected version of Akaike’s information criterion AICc, selected the Gompertz model and the growth compensation approach as those who fitted the data best. We conclude that the growth compensation approach allows the application of a very high performance objective function to analyse individual length-at-age variability without underestimation of the parameters, and also that the best model to describe the growth trajectory of P. vannamei in a farmed environment is a sigmoid curve with an inflection point at 34% of the life period analysed (the Gompertz model).

Age and growth of jackass morwong (Nemadactylus macropterus Bloch & Schneider) in eastern Australian waters

1982 ◽  
Vol 33 (2) ◽  
pp. 245 ◽  
Author(s):  
DC Smith
Keyword(s):  
Growth Curve ◽  
Age Determination ◽  
Age And Growth ◽  
Von Bertalanffy ◽  
Significant Difference

N. macropterus, landed at the port of Eden, were sampled from July 1976 to June 1979. Saggital otoliths were used for age determination. A hyaline and an opaque ring were found to be formed during winter and summer. respectively. The growth of adult N. macropterus was adequately described by the von Bertalanffy growth curve. Females (K = 0.13, L∞ = 51.13) were found to grow faster, and to a greater age, than males (K = 0.17. L∞ = 45.50). No significant difference between sexes was apparent in the length-weight relationships.

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