Consulta: subjectFacets:"Bertalanffy"
Registros recuperados: 7
Data/hora: 01/06/2024 01:17:54

Crescimento de Callinectes sapidus (Crustacea, Decapoda, Portunidae) no estuário da laguna dos Patos, RS, Brasil
Provedor de dados: 76
Autores: Ferreira,Leonardo S.; D'Incao,Fernando.
Utilizando o método de deslocamento modal para a identificação das idades, estimou-se o crescimento do siri-azul Callinectes sapidus Rathbun, 1896 em duas áreas de pesca no estuário da Lagoa dos Patos. Os indivíduos foram coletados entre fevereiro de 2005 e março de 2006 no Saco da Mangueira e Saco do Arraial por meio de arrasto de rede de portas da pesca artesanal. Coletou-se um total de 2.609 animais, sendo 1.193 machos e 1.416 fêmeas. Para obtenção das curvas de crescimento utilizou-se o modelo de von Bertalanffy. As curvas foram validadas pela sua adequação ao ciclo de vida e aspectos biológicos da espécie. O tamanho máximo de largura de carapaça (LCmáx) utilizado foi mantido fixo em todas as análises (LCmáx=162,71mm; ± d.p.=3,10 para machos e...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bertalanffy; Brachyura; Siri-azul; Laguna dos Patos; Rede-de-arrasto.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212008000100010

Non-Linear Model to Describe Growth Curves of Commercial Turkey in the Tropics of Mexico
Provedor de dados: 89
Autores: Segura-Correa,JC; Santos-Ricalde,RH; Palma-Ávila,I.
ABSTRACT The objective of this study was to select the best non-linear model that fits the growth curve of turkeys managed under the tropical conditions of Southern Mexico. Data from 481 Hybrid converter turkeys (236 females and 245 males) reared under commercial conditions typical of that region were used. Turkeys were given ad libitum access to feed and water. Body weight was weekly recorded from 1 day to 23 weeks of age. Five non-linear mathematical models (Brody, Gompertz, Logistic, von Bertalanffy and Richards) were chosen to describe the age-weight relationship. The Brody and Richards' models fail to converge. The best fitting model was chosen based on the average prediction error (APE); the multiple determination coefficient R2 and the Akaike...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bertalanffy; Gomperz; Logistic; Body weight.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2017000100027

Growth, sexual maturity and sexual dimorphism of Aegla georginae (Decapoda: Anomura: Aeglidae) in a tributary of the Ibicuí River in southern Brazil
Provedor de dados: 103
Autores: Copatti,Carlos Eduardo; Legramanti,Rosemari Parise; Trevisan,André; Santos,Sandro.
ABSTRACT This study aimed to estimate the growth and size at the onset of sexual maturity in a population of Aegla georginae . Specimens were sampled from November 2007 to October 2008 in the Perau Creek (Ibicuí-Mirim sub-basin; Uruguay River basin). All captured specimens were sexed, and their cephalothoracic length (CL), minor and larger propodi length (MPL, LPL, respectively), height of major chela (HMQ), and abdomen width (AW) were measured. The lengthwise growth of males and females was evaluated using the Bertalanffy model, and the morphological sexual maturity was evaluated using the REGRANS program. The smallest ovigerous female presented a 10.45 mm CL. Males reached larger sizes than did females, but the growth rate was similar between the sexes....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Age estimative; Bertalanffy; Longevity; Size at onset maturity.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702016000300501

Crescimento do caranguejo de água doce, Dilocarcinus pagei Stimpson (Crustacea, Brachyura, Trichodactylidae)
Provedor de dados: 104
Autores: Pinheiro,Marcelo A. A.; Taddei,Fabiano G.
A biologia de caranguejos de água doce tem sido pouco enfocada na literatura carcinológica, especialmente em relação ao crescimento das espécies da família Trichodactylidae. Este estudo visa determinar as curvas de crescimento em tamanho e peso, bem como a longevidade e a idade na muda pubertária dos caranguejos de água doce Dilocarcinus pagei Stimpson, 1861. As amostras foram obtidas mensalmente na Represa Municipal de São José do Rio Preto (São Paulo), de outubro/1994 a setembro/1996. Os indivíduos tiveram o sexo determinado, sendo também mensurados (LC = largura do cefalotórax) e pesados (PE = peso úmido). O crescimento dos indivíduos foi determinado pelo método de distribuição dos exemplares em classes de tamanho, sendo utilizado o programa FiSAT para...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Idade; Tamanho; Peso; Bertalanffy.
Ano: 2005
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752005000300002

Growth, longevity, and juvenile recruitment of the white shrimp Litopenaeus schmitti (Burkenroad, 1936) (Decapoda: Penaeoidea) in southeastern Brazil
Provedor de dados: 3
Autores: Miazaki, Lizandra Fernandes; Santos, Ana Paula Freitas dos; Salvati, Dalilla da Silva; Simões, Sabrina Morilhas; Costa, Rogério Caetano da.
 Litopenaeus schmitti is one of the most commercially exploited penaeids on the southeastern and southern Atlantic coast of Brazil. Information about juvenile recruitment and growth patterns of individuals is important for management programs. The present study estimated the growth parameters, longevity, and recruitment of L. schmitti in the region of Ubatuba, São Paulo State. The growth parameters of individuals were estimated by the Bertalanffy growth model, and longevity was estimated with the inverted Bertalanffy equation. The growth parameters were, for females and males respectively: CL∞ = 53.10 mm and 43.23 mm, k = 1.82 year-1 and 2.19 years-1, t0= 1.10 and 0.69. Longevity was calculated to be 2.27 years for females and 2.10 years for males....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Dendrobranchiata; Shrimp fisheries; Closed season; Bertalanffy; Growth coefficient.
Ano: 2018
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/40379

Ajuste de modelos no lineales y estimación de parámetros de crecimiento en bovinos tropicarne
Provedor de dados: 115
Autores: Domínguez-Viveros,Joel; Rodríguez-Almeida,F. Alonso; Núñez-Domínguez,Rafael; Ramírez-Valverde,Rodolfo; Ortega-Gutiérrez,J. Ángel; Ruiz-Flores,Agustín.
El análisis del crecimiento con modelos de regresión no lineal (MNL) permite derivar parámetros (PC) e indicadores (IC) de crecimiento bajo condiciones específicas de producción que pueden ser considerados en los programas de mejoramiento genético. Los objetivos de este estudio fueron seleccionar y ajustar un MNL al crecimiento de bovinos Tropicarne criados en la vertiente del Golfo de México. Los MNL evaluados fueron Brody, Logístico, Bertalanffy y Gompertz. La información de crecimiento analizada correspondió a 12890 pesos mensuales, del nacimiento a los 24 meses de edad de 1787 animales. Los PC estimados fueron peso adulto (PAD) y tasa de madurez (TM); así como los IC, edad (EPI) y peso al punto de inflexión (PPI), edad al 50 % de madurez (E50M) y...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Selección modelos; Brody; Bertalanffy; Bovinos trópico; Curva crecimiento.
Ano: 2013
URL: http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-31952013000100003

Growth of the Anchovy Anchoa tricolor in a brazilian subtropical estuary
Provedor de dados: 42
Autores: CARVALHO,BARBARA M. DE; FONTOURA,NELSON F.; SPACH,HENRY L.
ABSTRACT This study aimed to describe the growth parameters of Anchoa tricolor in a subtropical estuary. From August 2010 to July 2011, 10.009 specimens of the anchovy Anchoa tricolor, mean total length 4.2 cm (±1.45), were captured in the intertidal region of the Estuarine Complex of Paranaguá (25º 15’ - 25° 35’ S and 48° 20’ - 48° 45’ W). Species´s weight/length relationship for grouped genders was described as follow:   W = 0.0000591.Lt3.282 (length in centimeters; weight in grams) showing a positive allometric growth pattern (b&gt;3; P=0.000). Significant differences concerning weight/length relationship for males, females and unsexed individuals were identified. Parameters of the length to age growth curve were estimated by adjusting a von Bertalanffy...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bertalanffy; Engraulidae; Longevity; Weight/length relationship.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652018000502097