The standard deviation structure as a new approach to growth analysis in the farmed Pacific white shrimp, Penaeus vannamei (Decapoda, Penaeidae)

Abstract In the present study, weight-at-age data of reared Pacific white shrimp, Penaeus vannamei Boone, 1931, were analysed under four different assumptions of variance (observed, constant, depensatory, and compensatory variance) in order to analyse the robustness for selecting the right standard deviation structure to parametrize the Von Bertalanffy, Logistic and Gompertz models. Selection of the best model and variance criteria were obtained based on the Bayesian information criterion (BIC). According to the results of the BIC, the observed variance in the present study proved to constitute the best way to parametrize the three above-listed growth models, and the Von Bertalanffy model appeared to be the best to represent the growth curve found. This is an asymptotic sigmoid curve with an inflection point. Based on these results, using the observed error structure to calculate the growth parameters in multi-model inference analyses is recommended.

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The Standard Deviation Structure as a New Approach to Growth Analysis in Weight and Length Data of Farmed Lutjanus guttatus

Fishes ◽

10.3390/fishes6040060 ◽

2021 ◽

Vol 6 (4) ◽

pp. 60

Author(s):

Sergio G. Castillo-Vargasmachuca ◽

Eugenio Alberto Aragón-Noriega ◽

Guillermo Rodríguez-Domínguez ◽

Leonardo Martínez-Cárdenas ◽

Eulalio Arámbul-Muñoz ◽

...

Keyword(s):

Standard Deviation ◽

Growth Parameters ◽

Growth Models ◽

Growth Curves ◽

Gompertz Model ◽

Information Criterion ◽

Weight Growth ◽

Length Data ◽

Size At Age ◽

The Right

In the present study, size-at-age data (length and weight) of marine cage-reared spotted rose snapper Lutjanus guttatus were analyzed under four different variance assumptions (observed, constant, depensatory, and compensatory variances) to analyze the robustness of selecting the right standard deviation structure to parametrize the von Bertalanffy, Logistic, and Gompertz models. The selection of the best model and variance criteria was obtained based on the Bayesian information criterion (BIC). According to the BIC results, the observed variance in the present study was the best way to parametrize the three abovementioned growth models, and the Gompertz model best represented the length and weight growth curves. Based on these results, using the observed error structure to calculate the growth parameters in multi-model inference analyses is recommended.

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Development of a Recombinase Polymerase Amplification (RPA) assay for Acute Hepatopancreatic Necrosis Disease (AHPND) detection in Pacific white shrimp (Penaeus vannamei)

Molecular and Cellular Probes ◽

10.1016/j.mcp.2021.101710 ◽

2021 ◽

pp. 101710

Author(s):

Hung Nam Mai ◽

Luis F. Aranguren Caro ◽

Roberto Cruz-Flores ◽

Arun K. Dhar

Keyword(s):

Pacific White Shrimp ◽

Recombinase Polymerase Amplification ◽

White Shrimp ◽

Penaeus Vannamei ◽

Acute Hepatopancreatic Necrosis Disease

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Characterization of a novel shrimp pathogen, Vibrio brasiliensis , isolated from Pacific white shrimp, Penaeus vannamei

Journal of Fish Diseases ◽

10.1111/jfd.13475 ◽

2021 ◽

Author(s):

Ge Li ◽

Guosi Xie ◽

Hailiang Wang ◽

Xiaoyuan Wan ◽

Xinshu Li ◽

...

Keyword(s):

Pacific White Shrimp ◽

White Shrimp ◽

Penaeus Vannamei

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Effects of culturing the Pacific white shrimp Penaeus vannamei in “biofloc” vs “synbiotic” systems on the growth and immune system

Aquaculture ◽

10.1016/j.aquaculture.2021.736905 ◽

2021 ◽

pp. 736905

Author(s):

Aya S. Hussain ◽

Deyaaedin A. Mohammad ◽

Wafaa S. Sallam ◽

Nahla M. Shoukry ◽

D. Allen Davis

Keyword(s):

Immune System ◽

Pacific White Shrimp ◽

White Shrimp ◽

Penaeus Vannamei ◽

The Pacific

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Ultrastructure of the hepatopancreas of the Pacific white shrimp, Penaeus vannamei (Crustacea: Decapoda)

Journal of the Marine Biological Association of the United Kingdom ◽

10.1017/s002531540005222x ◽

1988 ◽

Vol 68 (2) ◽

pp. 323-337 ◽

Cited By ~ 40

Author(s):

Thomas Caceci ◽

Kay F. Neck ◽

Donal D H. Lewis ◽

Raymond F. Sis

Keyword(s):

B Cells ◽

Plasma Membranes ◽

Ultrastructural Level ◽

Pacific White Shrimp ◽

White Shrimp ◽

Penaeus Vannamei ◽

Intact Cells ◽

The Pacific ◽

Total Complement ◽

Electron Microscopes

Fourteen specimens of the hepatopancreas of the Pacific white shrimp, Penaeus vannamei, were prepared for examination with the transmission and scanning electron microscopes and with the light microscope. The histology and ultrastructure of this organ is similar to that seen in other Decapoda. At the ultrastructural level, it was observed that B-cells rupture at approximately the level of gap junctions located on the lateral plasma membranes of the cells, and discharge the contents of their large vacuoles into the intercellular space. This efflux of enzymatic material may be the mechanism by which cells are released from the wall of the tubule at the proximal end: the rupture and collapse of a B-cell may be analagous to the removal of the keystone which supports an arch. Deprived of support, and lacking structural adaptations for cohesion (there are no desmosomes or interdigitations in the epithelium) and with the intercellular material digested, the remaining intact cells collapse into the lumen of the tubule. The lysis of individual cells of all types - R-, F-, and B-cells - may contribute to the tubules’ total complement of digestive enzymes.

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