Consulta: subjectFacets:"Coloration"
Registros recuperados: 7
Data/hora: 03/06/2024 19:13:48

Analysis of shell colour determinism in the Manila clam Ruditapes philippinarum
Provedor de dados: 5
Autores: Peignon, Jean-marie; Gerard, Andre; Naciri, Yamama; Ledu, Christophe; Phelipot, Pascal.
The Manila clam presents a large polymorphism for shell colours and patterns. No experiment has been conducted to study the determinism of such a polymorphism which has been well known for a long time. The aim of this study was firstly to determine the genetic variation for shell colour and secondly to produce some homozygous lines for the shell colouring. These lines could then be used as controls for laboratory experiments. The colouring is defined by three characters: asymmetry, ornamentation and hue. Clams with asymmetrical colouring are not fully pigmented, except for a posterior band on the left valve. Clams with symmetrical colouring are fully pigmented on the two valves. Four cross series were conducted between the different characters: Asymmetry...
Tipo: Text
Palavras-chave: Mollusque; Bivalve; Palourde; Ruditapes philippinarum; Génétique; Hérédité mendélienne; Coloration; Asymétrie; Mollusc; Bivalve; Manila clam; Ruditapes philippinarum; Genetics; Mendelian inheritance; Colouration; Asymmetry.
Ano: 1995
URL: http://archimer.ifremer.fr/doc/1995/publication-3204.pdf

Age- and quality-dependent DNA methylation correlate with melanin-based coloration in a wild bird
Provedor de dados: 5
Autores: Soulsbury, Carl D.; Lipponen, Anssi; Wood, Kristie; Mein, Charles A.; Hoffman, Joseph I.; Lebigre, Christophe.
Secondary sexual trait expression can be influenced by fixed individual factors (such as genetic quality) as well as by dynamic factors (such as age and environmentally induced gene expression) that may be associated with variation in condition or quality. In particular, melanin-based traits are known to relate to condition and there is a well-characterized genetic pathway underpinning their expression. However, the mechanisms linking variable trait expression to genetic quality remain unclear. One plausible mechanism is that genetic quality could influence trait expression via differential methylation and differential gene expression. We therefore conducted a pilot study examining DNA methylation at a candidate gene (agouti-related neuropeptide: AgRP) in...
Tipo: Text
Palavras-chave: AgRP; Coloration; Epigenetics; Heterozygosity; Melanin; Sexual ornament.
Ano: 2018
URL: http://archimer.ifremer.fr/doc/00452/56391/58029.pdf

Adult diapause morph of the brown stink bug, Euschistus servus (Say) (Heteroptera: Pentatomidae)
Provedor de dados: 82
Autores: Borges,Miguel; Zhang,Aijun; Camp,Mary J.; Aldrich,Jeffrey R.
The brown stink bug, Euschistus servus (Say), is abundant throughout most of eastern North America and is commonly found feeding on soybean, mullein, beans, tomatoes, peas, cotton, wheat, corn, tobacco and peach. Color change in E. servus from green to reddish-brown was shown to be an indicator of reproductive diapause. Reddish-brown insects lived longer than green individuals, females laid no eggs, and males did not produce pheromone. The high mortality registered for the green colony of E. servus adults was associated with the physiological cost associated with reproduction. The main pheromone component of this species is methyl 2E,4Z-decadienoate, in agreement with previous work. The first generation of this species develops on noncrop hosts and the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Insecta; Coloration; Pheromone; Methyl 2E; 4Z-decadienoate.
Ano: 2001
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2001000100028

Effect of the ozonization process on the quality of peanuts and crude oil
Provedor de dados: 91
Autores: Alencar,Ernandes R. de; Faroni,Lêda R. D; Soares,Nilda F. F; Carvalho,Marta C. S; Pereira,Katiane F.
The purpose of this study was to evaluate the effect of ozone on the quality of peanut grains and crude oil extracted from these grains. Peanut samples of 1 kg were used, with a moisture content of 8.0% w.b. and stored in 3 L glass recipients. The ozonization process utilized ozone gas concentrations of 13 and 21 mg L-1, temperature of 25 °C, exposure periods of 0, 24, 48, 72 and 96 h, and a flow rate of 1.0 L min-1. Evaluation of peanut quality consisted of analysis for moisture content, electrical conductivity, lipid concentration and peanut color. The qualitative parameters of the crude oil evaluated were free fatty acids, peroxide index and iodine index. In general there was no alteration in peanut quality due to ozone, except for the coloration of the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ozone; Qualitative changes; Coloration.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662011000200009

Physical-chemical and chemical characterization of Passiflora cincinnata Mast fruits conducted in vertical shoot positioned trellis and horizontal trellises system
Provedor de dados: 94
Autores: D’abadia,Ana Claudia Alves; Costa,Ana Maria; Faleiro,Fábio Gelape; Malaquias,Juaci Vitória; Araújo,Francisco Pinheiro de.
Abstract Passiflora cincinnata Mast. or Caatinga passion fruit is widely cultivated in the northeastern semi-arid regions of Goiás, Minas Gerais, and Bahia. The system of cultivation and field management of the Passiflora species affects the physicochemical quality of its fruits. In this study, we evaluated the chemical and physico-chemical characteristics of the fruits of 2 progenies (CPEF2220 and CBAF2334) of P. cincinnata species using the vertical and horizontal trellis system. Fruits were collected from the plants at their physiological maturation stage and tested for the fruit skin color and texture and the pH, total soluble solids, titratable acidity, pulp acidity ratio, and the contents of flavonoids, anthocyanins, and polyphenols in the seedless...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Flavonoids; Coloration; Polyphenols; Acidity.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452019000600901

Chromatic alteration in Arenaeus cribrarius (Lamarck) (Crustacea, Portunidae): an indicator of sexual maturity
Provedor de dados: 104
Autores: Pinheiro,Marcelo Antonio Amaro; Taddei,Fabiano Gazzi.
Some individuals of the species Arenaeus cribrarius (Lamarck, 1818) bear a characteristic pink abdomen, which is notably different from the usual white coloration. The incidence of this chromatic alteration was determined for a single population and its relation with other individual variables were examined. The individuals were monthly collected from May, 1991 to April, 1993, in Ubatuba, São Paulo, with the aid of a shrimp fishery boat provided with double-rig trawling nets. All specimens were sexed, measured (CW = carapace width), distributed in 10-mm size classes and classified according to growth phase (juvenile and adult), molting condition and development stage of gonads. The occurrence of pink-colored morphs was also recorded. From a total of 2,096...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Brachyura; Portunidae; Reproduction; Coloration.
Ano: 2000
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752000000400006

Controlled atmosphere maintains native and cultivated yerba mate quality during shelf life after long-term storage
Provedor de dados: 53
Autores: Thewes,Fabio Rodrigo; Brackmann,Auri; Schultz,Erani Eliseu; Machado,Eduardo Perkovski; Ludwig,Vagner; Santos,Luana Ferreira dos.
ABSTRACT Yerba mate shows social and economic importance for the Southern Latin American countries due to its easy production and large market range. However, there is a problem to harvest the yerba mate at the correct period and to store it until processing and marketing. Thus, the aim of this paper was to evaluate the interaction among the storage in controlled atmosphere, effect of cultivation form and shelf life period on yerba mate quality after long-term controlled atmosphere storage. The experiment was conducted in a factorial arrangement (3 controlled atmosphere conditions × 2 cultivation forms × 4 weeks of shelf life). Native yerba mate, stored under controlled atmosphere, showed higher chlorophyll concentration as compared to the cultivated one....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ilex paraguariensis; Coloration; Chlorophyll concentration; Carotenoids; Phenolic compounds.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052016000200230