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Growth curve by Gompertz nonlinear regression model in female and males in tambaqui (Colossoma macropomum) Anais da ABC (AABC)
MELLO,FERNANDA DE; OLIVEIRA,CARLOS A.L.; RIBEIRO,RICARDO P.; RESENDE,EMIKO K.; POVH,JAYME A.; FORNARI,DARCI C.; BARRETO,ROGÉRIO V.; MCMANUS,CONCEPTA; STREIT JR,DANILO.
ABSTRACT Was evaluated the pattern of growth among females and males of tambaqui by Gompertz nonlinear regression model. Five traits of economic importance were measured on 145 animals during the three years, totaling 981 morphometric data analyzed. Different curves were adjusted between males and females for body weight, height and head length and only one curve was adjusted to the width and body length. The asymptotic weight (a) and relative growth rate to maturity (k) were different between sexes in animals with ± 5 kg; slaughter weight practiced by a specific niche market, very profitable. However, there was no difference between males and females up to ± 2 kg; slaughter weight established to supply the bigger consumer market. Females showed weight...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Gompertz curve; Body growth; Maximum growth rate; Slaughtered point.
Ano: 2015 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652015000502309
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Manipulation of dietary conditions for maximal growth in mussels, Mytilus edulis, from the Marennes-Oléron Bay, France ArchiMer
Hawkins, Ajs; Smith, Rfm; Bougrier, Serge; Bayne, Bl; Heral, Maurice.
Results are presented from laboratory-based experiments in which we investigated short-term responses of Mytilus edulis L. to experimental changes in the amount and composition of suspended seston. Working with large quantities of cultured algae, we have studied feeding behaviour over ranges of food availability and quality that ex tend weil beyond earlier limits. Findings confirm the ability of mussels to selectively reject inorganic particles as pseudofaeces prior to ingestion, thereby enriching the organic content of ingested matter by 30% more than the organic content of natural filtered seston. Our findings also establish acclimation both of selective and absorptive processes, indicating that the extent to which growth of M. edulis can be stimulated...
Tipo: Text Palavras-chave: Mytilus edulis; Comportement alimentaire; Régulation; Croissance.; Mytilus edulis; Feeding behaviour; Regulation; Maximum growth rate.
Ano: 1997 URL: http://archimer.ifremer.fr/doc/00015/12604/9482.pdf
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