Results 81 to 90 of about 7,409,427 (228)

Modeling the weight gain of freshwater-reared rainbow trout ( Oncorhynchus mykiss ) during the grow-out phase

Revista Brasileira de Zootecnia, 2020
We used five nonlinear models to calculate the weight gain of rainbow trout (122.11±15.6 g) during the final grow-out phase of 98 days under three different feed types (two commercials diets, A and B, and one experimental diet, C) in triplicate groups ...
Peter Charrie Janampa-Sarmiento, Rodrigo Takata, Thiago Mendes de Freitas, Licius de Sá Freire, Marcelo Menezes de Britto Pereira, Vincent Lugert, Guilherme Melgaço Heluy, Marcelo Maia Pereira   +7 more
doaj   +1 more source

Investigating the Dynamics of Sex‐Structured Stock Assessment Models Under Sexual Size Dimorphism

Fisheries Management and Ecology, EarlyView.
ABSTRACT The integration of separate sexes in stock assessment models represents an advancement towards more realistic modeling of interactions between fisheries and target species. However, increased model complexity can also introduce additional uncertainty into the modeling process.
Francisco Izquierdo, Marta Cousido‐Rocha, Massimiliano Cardinale, Maria Grazia Pennino, Andreia V. Silva, Cristina Silva, Hugo Mendes, Santiago Cerviño   +7 more
wiley   +1 more source

Comparative age and growth of common snook Centropomus undecimalis (Pisces: Centropomidae) from coastal and riverine areas in Southern Mexico

Revista de Biología Tropical, 2013
Common snook Centropomus unidecimalis is an important commercial and fishery species in Southern Mexico, however the high exploitation rates have resulted in a strong reduction of its abundances.
Martha A. Perera-Garcia, Manuel Mendoza-Carranza, Wilfrido Contreras-Sánchez, Allyse Ferrara, Maricela Huerta-Ortiz, Raúl E. Hernández-Gómez   +5 more
doaj   +2 more sources

Extended von Bertalanffy Equation in Solow Growth Modelling

Algorithms
The aim of this work is to model the growth of an economic system and, in particular, the evolution of capital accumulation over time, analysing the feasibility of a closed-form solution to the initial value problem that governs the capital-per-capita ...
Antonio E. Bargellini, Daniele Ritelli, Giulia Spaletta   +2 more
doaj   +1 more source

STANDARD GROWTH CURVE FOR CHUB (Leuciscus cephalus L. 1758) IN CROATIA [PDF]

Croatian Journal of Fisheries, 1997
Chub (Leuciscus cephalus) is widely spread fish species and it inhabits most of Europe and some parts of Asia. It is also the dweller of different sections of rivers and stagnant waters and it eats both - animal and plant organisms.
Tomislav Treer, Dobrila Habeković, Ivica Aničić, Roman Safner, Andrea Kolak   +4 more
doaj  

Growth and Overfishing Indicators Applied to the Protandrous Hermaphrodite Fat Snook (Centropomus parallelus) in the South Atlantic

Fisheries Management and Ecology, EarlyView.
ABSTRACT The fat snook Centropomus parallelus is a protandrous hermaphrodite teleost of artisanal and recreational value in the South Atlantic, vulnerable to fishing pressure and size‐selective gears. We evaluated exploitation status using size and age based overfishing indicators from recreational fishing championships and artisanal landings along the
Julia Maria Maccari, Matheus Oliveira Freitas, Domingos Garrone‐Neto, Pietro Moro, Vinicius Abilhoa   +4 more
wiley   +1 more source

Ajustes de curvas de crescimento em bovinos Nelore da região Norte do Brasil Fitting of growth curves of Nellore cattle from Northern Brazil

Revista Brasileira de Saúde e Produção Animal, 2011
Objetivou-se determinar o modelo mais adequado para descrever o crescimento de bovinos Nelore. Quatro modelos não-lineares (Brody, Von Bertalanffy, Gompertz e Logístico), foram ajustados pelo método de Gauss-Newton, mediante utilização do procedimento ...
Jorge Luis Ferreira, Ednira Gleida Marques, Marcelo Correa da Silva, Fernando Brito Lopes   +3 more
doaj  

Inter‐disciplinary perspectives on sustainability in machinery manufacturing

International Journal of Management Reviews, EarlyView.
Abstract Perspectives on economic, social and environmental sustainability in machinery manufacturing are changing. These are predominantly driven by increased consumer, firm and public knowledge on the importance of sustainability and the role that machinery manufacturers can play to achieve sustainability outcomes.
Oluwaseun E. Olabode, Eleni Zantidou, Olaide F. Olabode, Afolakemi A. Jedidiah, Simon Fletcher, Andrew Longstaff   +5 more
wiley   +1 more source

Estimating von Bertalanffy parameters with individual and environmental variations in growth

Journal of Biological Dynamics, 2012
Variation among individuals is an ubiquitous feature of natural populations. However, the relative roles of intrinsic individual differences and stochastic processes in generating variation remain poorly understood.
A. O. Shelton, M. Mangel
semanticscholar   +1 more source

Fitting of von Bertalanffy growth model: Stochastic differential equation approach

, 2017
In this paper, the well-known von Bertalanffy growth (VBG) model for estimating age-length relationship in fisheries is considered. It is emphasised that nonlinear estimation procedures should be adopted for fitting the von Bertalanffy nonlinear ...
Himadri Ghosh, N. N. Pandey, Prajneshu Gupta   +2 more
core   +1 more source