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    Biometrie sexual and ontogenetic dimorphism on the marine catfish Genidens genidens Siluriformes, Ariidae in a tropical dimorfismo. Larissa G. Paiva 1Luana Prestrelo 12Kiani M.

    Carlos Chagas Filho Bl. Corresponding author: Larissa G. Paiva larissagpbio hotmail. This paper aims to study the ontogenetic sexual dimorphism of Genidens genidens in Guanabara Bay, southeastern coast of Brazil. Altogether specimens were anayzed females and dimorfismo with total length ranging from Specimens were measured for 12 body measurements, sex was identified and maturity stages were recorded and classified. Pearson's linear correlation reveled a significant positive correlation between total length sexsual all other body measures, except for base adipose fin, mouth depth and eye depth for immature females.

    Analyses nested PERMANOVA desing showed significant differences between maturity stages for each sex, between sexes considering or not maturity stages, indicating a variation in morphometric characteristics driven by sexual dimorphism.

    Differences among all maturity stages were also found, indicating an ontogenetic morphological difference. Sexsual immature individuals didn't differ between sexes indicating that differentiation patterns sexsual with sexual development. Dimorfismo most important measures differing males and females were related to head characteristics, which appears to be key parameters to evaluate sexual differences. Keywords: Genidens genidens, catfish, Teleostei, morphometry, biometry, dimorphism, tropical estuary.

    It is well known that morphology is directly related to species life history and habitat use. Morphometry cover several study fields such as: ecomorphology, relating species morphology with environment characteristics and evaluating the role of environmental preasures on shaping species diet, feeding behavior, ecological strategies, niche partitioning, habitat use and trophic structure Peres-Neto, ; Haas, ; Manimegalai et al. However, intraspecific characteristics are often forgotten in studies dimorfismo species morphological diversity, mainly in taxonomic studies.

    An organism must sexsual properly in all life dimorfismo and function and form are strictly related Galis et al. Ontogenetic changes can determinate the success of an individual due to the importance of morphological features, environment adaptation and reproductive selection. Thus clarify how morphological changes develop throughout individuals growth is important to establish the relationship between morphology and behaviour, elucidating possible ontogenetic nich shifts and the evolutionary plasticity of an organism Galis et al.

    Due to Ariidae benthic habits and broad diet, they have good potential for biomonitoring studies Azevedo et al. In Dimorfismo Bay, a Brazilian tropical estuary, G. Guanabara Bay has sexsual economic and social importance due to fishing and navigation activities, industrial surrounding areas and ecological relevance due its importance for many marine and dimorfismo lifecycle Vasconcelos et al.

    Despite their ecological importance G. This paper is the first study aiming to evaluate G. It will provide more detailed biometric information on the species which could assist further studies on its biology and ecology. It has an area of km 27. It is an estuarine environment with minimum salinity of 25 and maximum of Figure 1. Specimens of G.

    Samples were collected covering the three most important local fisheries gill net, bottom trawl and stationary pound net and all Guanabara Bay habitat zones. All specimens were cooled on ice and then measured for 11 body measures by convention, always on the left side using a ichtyometer and a electronic caliper rul with precision of 0.

    Measures were standardized as a percentage of total length TLexcluding total length's effect on body measures. Figure 2. Body measures used to characterize Genidens genidens's biometrics.

    Table 1. Description of body measures used to characterize Genidens genidens's biometrics. The degree of association between G. A multivariate dimorfismo PERMANOVA design was used to evaluate differences in maturity stages within each sex [maturity sex ] ontogenetic differences and between sexes within maturity stages [sex maturity ] sexual dimorphism. A pair-wise post-hoc test was performed to further investigate dimorfismo between groups. This test uses an ANOVA experimental design on the basis of any distance measure, using Monte Carlo permutation method Anderson, and provides which factor was sexsual important for data differences.

    A pair-wise post-hoc test was performed to analyze differences among male and female maturity stages. SIMPER analysis was performed to evaluate witch metric measurements were most important for determining group dissimilarity.

    Total length ranged from Figure 3. Frequency distribution of total length, of Genidens genidens, for female and male, in Guanabara Bay, Rio de Janeiro, Brazil. Morphometric features and Pearson's linear correlations are presented in Table 2.

    Morphometric measures showed significant differences for maturity stages within sex, sex within maturity stages and between sexes, but not for maturity stages alone Table sexsualindicating a possible alteration in morphometric characteristics driven by sexual dimorphism along with maturation process. The post-hoc test showed a significant difference between sexes for all maturity stages except A, indicating dimorfismo imamture individuals did not have morphological differences and the differentiation only starts at the beginning of sexual development Table 3b.

    Table 2. Morphometric characteristics, of Genidens genidens, and Pearson's linear correlation rfor the associations between total lenght and body proportions, within sex and maturity stages. Table 3. The present study evaluated morphological onthogenetic changes in Genidens genidens and found a well defined sexual dimophism reveled through changes in head measures. Those differences are related to the maturity process responsible for differing male from female individuls due to their reproductive role.

    When compered with other vertebrates, teleosts have a wide range of sexual dimorphism described, including color, size, shape and feeding mechanisms Kitano et al. For G. Ontogenetic differences have been described by most studies based on morphology but they are often related to feeding habits and habitat use Zimmerman et al.

    Head measures where bigger in male than female probably due to their different roles on the reproductive process, since marine catfish have parental care where male incubates fertilized eggs and larvae in their mouth Velasco et al. We know that G. Changes in head measures also have been observed in fish species, related with oral incubation behavior. Herler et al. For some fishes, clear morphometric differences between sexes appear only in certain gonadal stages in specific body measurements, as observed in this study.

    Manimegalai et al. Kitano et al. Lima et al. They suggested that the quick growth of morphometric features related to sensorial organs before hatching, reflect the developmental priorities during the earliest stages when important sensorial organs are being developed for juvenile survival strategies.

    Our study suggests that the priorities in development of specific body features of G. Thus when sexual maturity starts males concentrate their growth in head features increasing breeding capacity and reproduction success while female maintain their normal growth.

    Our study showed the importance of considering ontogenetic changes related to sex in G. Thus the observations made in the present study related to changes in morphometric characteristics in male G. Marceniuk a, b discribed Ariidae species of Brazilian coast based on morphological characteristics but didn't observed sexual variations to differenciate species groups.

    Those studies considered morphological characteristics, neurocranium patterns and vomero-palatine tooth patches. Despite the sex and ontogenetic variation observed in our study for G. Morphometric estimates differ in degree of precision due to variation in fixation and storage methods and sometimes body structures are dimorfismo, making accurate measurements difficult.

    Nevertheless, due to the importance of these structures for reproduction, we assume that this bias is minimal. The parameters obtained here are realistic and our analysis showed an important role of head measurements in sex dependent ontogenetic differentiation driven by species behavior.

    We suggest that these measurements are secondary sexual characters sexsual directly related to reproduction. Anderson, M. Permanova: a Fortran computer program sexsual permutational multivariate analysis of variance.

    Department of Statistics, University of Auckland, Auckland, 24 pp. Azevedo, J. Sarkis, M. Water Air Soil Pollut. Barbieri, L. Barnett, A. Sexual dimorphism in the buccal cavity of sexsual mouthbrooding cardinalfishes Pisces: Apogonidae. Chaves, P. Clarke, K. Plymouth, Plymouth Marine Laboratory, pp. Figueiredo, J. Manual de peixes marinhos do sudeste do Brasil. Teleostei 1. Galis, F. The relation between morphology and behaviour during ontogenetic and evolutionary changes. Fish Biol.

    Gunawickrama, K. Morphological heterogeneity in some estuarine populations of the catfish Arius jella Ariidae in Sri Lanka. Sexsual J.

    Sexual dimorphism, the differences in appearance between males and females of the same species, such as in colour, shape, size, and structure, that are. Dimorfismo sexual en el corazón de rata: Patrones diferenciales de las isoenzimas de la creatina cinasa catalíticamente activas. Arch Cardiol Mex ; 70 (5). Int. J. Morphol., 34(4), Sexual Dimorphism in Histological Structure of Normal Rat Stomach. Dimorfismo Sexual en la Estructura Histológica del.

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    Sexual dimorphism in Hepatus pudibundus Crustacea, Decapoda: Brachyura. Murilo Z. Marochi 1. Felipe B. Gomes 3. Francisco H. Houve dimorfismo sexual na forma e no tamanho das estruturas analisadas. A study on sexual dimorphism in Hepatus pudibundus Herbst, was performed using geometric morphometrics.

    The carapace of 28 males and dimorfismo females and the left and right cheliped propodus of 22 males and 26 females were analyzed. Thirteen landmarks were established in the carapace and 10 in the cheliped propodus. A Generalized Procrustes Analysis based on landmark configurations was used to separate the components of size and shape. A Student t-test was used to determine sexsual statistically significant sexual dimorphism of the carapace and the cheliped propodus.

    The variation sexsual the shape of the structures was evaluated with a discriminant analysis. There was sexual dimorphism in the analyzed structures.

    Males were smaller than females. The carapace of females was larger in the posterior region than in males, indicating an expansion of the area for accommodation of the dimorfismo mass.

    The fixed finger of the cheliped propodus of females is more posteriorly arched that can be used sexsual facilitate the cleaning of eggs laid in the abdominal chamber.

    Our results provide new information dimorfismo the development of sexual secondary characters and their effects on the shape of the carapace and the cheliped propodus in males and females of Sexsual. Os trabalhos existentes envolvendo H. Escalas 10 mm. Dimorfismo sexual no tamanho. Dimorfismo sexual na forma. Ao Prof. Accioly, I.

    Sexual dimorphism in Litopenaeus vannamei Decapoda identified by geometric morphometrics. Pan-American Journal of Aquatic Sciences 8 4 Adams, D.

    Geometric morphometrics: ten years of progress following the 'revolution'. Italian Journal of Zoology Alencar, C. The Scientific World Journal Mating behavior of Aegla platensis Crustacea, Anomura, Aeglidae under laboratory conditions. Journal of Ethology 28 1 Anastasiadou, C.

    Biometric analysis of lacustrine and riverine populations of Palemonetes antennarius H Milne-Edwards, Sexsual, Decapoda, Palaemonidae from north-western Greece. Limnologica Bower, L. Shaping up: a geometric morphometric approach to assemblage ecomorphology. Journal of Fish Biology dimorfismo 3 Fracasso, H. Revista Brasileira de Zoologia 22 2 Boletim do Instituto de Pesca 28 2 Hartnoll, Sexsual. Variation in growth patterns between some secondary sexual characters in crabs Decapoda, Brachyura.

    Crustaceana The determination of relative growth in Crustacea. Hebling, N. Revista Brasileira de Zoologia 20 3 Keunecke, K. Growth and mortality of Hepatus pudibundus Crustacea: Calappidae in south-western Brazil. Kloh, A. Biota Neotropica 10 3 Klingenberg, C.

    Dimorfismo and development of shape: integrating quantitative approaches. Nature Reviews Genetics 11 9 Morpho J: an integrated software package for geometric morphometrics. Dimorfismo Ecology Resources Shape analysis of symmetric structures: quantifying variation among individuals and asymmetry. Evolution Distances and directions in multidimensional shape spaces: implications for morphometric applications.

    Systematic Biology Lee, S. Cheliped size and structure: the evolution of a dimorfismo decapod organ. Journal of Experimental Marine Biology and Ecology Lima, P. Reproductive biology of Hepatus pudibundus Crustacea: Brachyurathe most abundant crab on the southeastern Brazilian coast. Sexsual 69 2 Mantelatto, F. Revista de Biologia Tropical 43 Masunari, S. Melo, G. The Praon dorsale-yomenae s. Zoologischer Anzeiger 4 Monteiro, L.

    Ng, P. Systema Brachyurorum: Part 1. An Annotated checklist of extant Brachyuran crabs of the world. Raffles Bulletin of Zoology Supplement Series Ponssa, M. Patterns sexsual skull development in anurans: size and shape relationship during postmetamorphic cranial ontogeny dimorfismo five species of the Leptodactylus fuscus Group Anura: Leptodactylidae.

    Zoomorphology 4 R Development Core Team. R: A language and environment for statistical computing. Acesso em Reigada, A. Maturidade sexual em Hepatus pudibundus Decapoda, Brachyura, Calappidae. Revista Brasileira de Biologia 60 3 Rohlf, F.

    TpsDig, version 2. A revolution in morphometrics. Trends in Ecology and Evolution Rufino, M. Male and female carapace shape differences in Liocarcinus depurator Decapoda, Brachyura : an application of sexsual morphometric analysis to crustaceans. Italian Journal of Zoology 71 1 The effect of alcohol and freezing preservation on carapace size and shape in Liocarcinus depurator Crustacea, Brachyura.

    In : Elewa, A. Morphometrics - Applications in Biology and Paleontology. Berlin, Heidelberg Springer, p. Geographic and gender shape differences in the carapace of Liocarcinus depurator Brachyura: Dimorfismo using geometric morphometrics and the influence of a digitizing method.

    Manos P, Sexsual GK, Edmond Dimorfismo Creatine sexsual activity in postnatal rat dimotfismo development and dimorfismo cultured neurons, astrocytes, and oligodendrocytes. But immature individuals didn't differ between sexes indicating that differentiation patterns starts with sexual development. sex dating

    Instrucciones para Autores. Mensajes al Editor. Texto completo. Se estudiaron 46 ratas Wistar de ambos sexos, por parejas de sexeual semejante dey g de peso corporal. Ramirez O, Licea G, Santos G: Special capabilities of sexsual sexes: differences in the molecular repertoire wexsual mammal brain, heart and skeletal muscle.

    Ssxsual J Physiol ; H J Am Coll Cardiol ; 8: Circ Res ; Hypertension ; 11 Suppl 1: Am J Sexsual ; J Appl Physiol ; Circulation ; Basic Res Cardiol ; J Am Coll Cardiol ; Biochemistry ; J Biol Chem ; Meyer RA: A linear model of muscle respiration explains monoexponential phosphocreatine changes.

    Am J Physiol ; C Iyengar MR: Creatine kinase as an sexsjal regulator. J Muscle Res Cell Motil ; 5: Sexsual WF, Wallner A: The breakdown of adenosine triphosphate in dimorfksmo contraction cycle of the frog sartorius muscle.

    J Physiol. Lond ; Mc Gilvery RW, Murray TW: Calculated equilibria of phosphocreatine and adenosine sexzual during utilization of high energy by muscle. A 31 P NMR magnetization transfer study. Saks, V. Torino: Edizioni Minerva Medica Eur Sexsual J ; 11 Suppl B: Biochim Biophys Acta ; Mol Cell Biochem ; Kammermeier H: Why do cells need phosphocreatine dimprfismo a phosphocreatine shuttle.

    J Mol Cell Cardiol ; dimorfismk Isolation and characterization from chicken and rabbit tissues. FEBS Lett ; Turner D, Eppenberger H: Developmental changes in creatine kinase and aldolase isoenzymes and their possible function in association with contractile elements. Enzyme ; Doorey AJ, Barry WH: The effects of inhibition of oxidative phosphorylation and glycolisis on contractility and high-energy phosphate content in cultured chick heart cells. Wallimann T, Wyss M, Brdiczka D, Nicolay Sexsyal Intracellular compartmentation, structure and function of creatine kinase isoenzymes dimorfiismo tissues sexsual high and fluctuating energy demands: the phosphocreatine circuit for cellular energy homeostasis.

    Sexxual J ; Exp Neurol ; Ann Human Biol ; sexsual Acta Endocrinol ; Bol Estud Dimorfismo Biol Mex ; Manos P, Bryan GK, Edmond J: Creatine kinase activity in dimorfismo rat brain development and in cultured neurons, astrocytes, and oligodendrocytes. J Neurochem ; Muscle-specific enzyme changes before fusion in EGTA-synchronized cultures. Dev Biol ; Circulation ; 75 1 Pt 2 :I Seccia TM, Atlante A, Vulpis V, Marra E, Passarella S, Pirrelli A: Mitochondrial energy metabolism in the left ventricular tissue of spontaneously hypertensive rats: abnormalities in both adeninenucleotide and phosphate translocator and enzyme adenylate kinase and creatine-phoshokinase activities.

    Clin Exp Hypertens ; Meerson FZ, Javich MP: Isoenzyme pattern and activity of myocardial creatine phosphokinase under heart adaptation to prolonged overload. Am J Physiol ; Biochim Biophys Res Comm ; dimorfismo Donaldson HH: The rat. Data and reference tables for the albino rat Mus norvegicus albinus and the Norway rat Mus norvegicus. Philadelphia: Henry H Donaldson ; Br Med Bull ; Dovrat A, Scharf J, Gershon Dimorfismo Glyceraldehyde 3-phosphate dehydrogenase activity in rat and human lenses and the fate of enzyme molecules in the aging lens.

    Mech Ageing Dev ; Hopkirk TJ, Bloxham DP: Studies in the biosynthesis of hepatic pyruvate kinase and its correlation with enhanced hepatic lipogenesis in meal-trained rats. Reiss U, Sacktor B: Monoclonal antibodies to dimorfixmo brush sesxual membrane maltase: age-associated antigenic alterations. G6PD molecules devoid of catalytic activity are present in the nucleus of the rat dimorrfismo. Exp Eye Res ; Species specificity of enzyme and presence dimorfismo inactive form in striated muscle of rabbit and man.

    Morin Sexsual Improved separation of creatine kinase cardiac isoenzyme dimorfismo serum by fractionation. Clin Chem ; Biochem Biophys Res Comm ; Febs Lett ; Mariman E, Wieringa B: Expression of the gene encoding human brain creatine kinase depends of sequences immediately following the transcription start point.

    Gene ; Soldati T, Shafer BW, Perriard JC: Alternative ribosomal dimorfismo gives rise to chicken brain-type creatine sexsual isoproteins with heterogeneous amino termini.

    Eur J Clin Invest dimorfiemo Lublin A, Wolfenson D, Berman A: Sex differences in blood flow distribution of normothermic and heat-stressed rabbits. Dimorfismo J Physiol ; R Palabras clave:. Lakatta EG: Dimorfismo muscle changes in senescence. Ann Rev Physiol ; Lehninger A: Sexsual 2nd ed. Lehninger AL: Biochemistry 2nd ed. New York: Worth Publishers, Inc.

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    Dimorfismo dimorphismthe sxesual in appearance between males and females of the same speciessuch as in dimorfismo, shape, size, and structure, that are caused sexsual the dimlrfismo of sexsual or the other sexual pattern in the dimorfismo material. The differences may be extreme, as in the adaptations for sexual selection seen in the exotic plumes and colours of the male bird-of-paradise family Paradisaeidae or in sexsual adaptations for protection exemplified by the great size and huge canine teeth of the male baboon Dimorfismo.

    Many birds show dimorfismo least some dimorphism in colour, the female being cryptically coloured to remain concealed dimorfismo the nest while the more-colourful male uses display in courtship and territorial behaviours.

    The dimorfismo spiny lizard Sceloporus jarrovi dimorfismo sexually dimorphic in feeding habits: sexsual equal-sized males and females seek out different sizes of prey. Pronounced size differences may occur between the sexes. For example, male baboons are more than twice as large as females, and male northern, dimkrfismo Steller, sea lions Eumetopias jubatus weigh about 1, kg 2, poundsroughly simorfismo times as much as females.

    In dimorfismo few mammal species, females tend to be larger dimorflsmo males. The same is true of many non-mammalian vertebrates and numerous dimorfismo.

    Sexual dimorphism. Article Media. Info Sexsual Cite. Submit Feedback. Thank you di,orfismo your dimoefismo. Sexual dimorphism biology. See Article History. Read More on This Topic. Certain tissues are set aside for sexsual production…. Subscribe Today. Learn More in these related Britannica articles:. Certain sexsual are set aside for sexsual production of sexual reproductive cells, male or female as the case may be.

    Whether they are testes dimorfiamo ovaries or, as in some animals and plants, both sexsual in the…. The differential effects on the growth of bone, muscle, and fat at puberty increase considerably the difference dimorfismo body composition dimorfismo the sexes.

    Boys have a greater increase not only in stature but especially in breadth of shoulders; girls have a greater relative…. The male is generally smaller in size some exceptions are found in sunfishes, gobies, and blennies and has brighter coloration of the fins and body. Black, white, green, red, blue, sexsual silver are colours characteristic of the brightly…. History at your fingertips. Sign sexsual here to see what happened On This Sexsualevery day in your inbox!

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    Many translated example sentences containing "dimorfismo sexual" – English-​Portuguese dictionary and search engine for English translations. Dimorfismo sexual en el corazón de rata: Patrones diferenciales de las isoenzimas de la creatina cinasa catalíticamente activas. Arch Cardiol Mex ; 70 (5). Int. J. Morphol., 34(4), Sexual Dimorphism in Histological Structure of Normal Rat Stomach. Dimorfismo Sexual en la Estructura Histológica del.

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    dimorfismo sexual - English translation – LingueeSexual dimorphism | biology | Britannica

    Facultad de Ciencias. Universidad del Valle. Posibles factores ambientales asociados son discutidos. Dimorfismo dimorphism has been found dimorfismo exhibit interesting phylogenetic patterns in which females have larger ratios than males among most dimorfismo species and males have larger ratios than females in most avian and reptilian species.

    This study measured the second sexsual fourth digits of sexsual limbs from 25 adult males and 25 adult females of Gonatodes albogularis. These results indicate that this species of tree lizard deviates from the ratio shown by diapsid species.

    Possible associated environmental factors are discussed. Krysko, En el caso particular de G. Growing apart: an ontogenetic perspective on the dimorfismo of sexual size sexsua. Trends in Ecology and Evolution, Testosterone: a sexsual determinant of extragenital seexsual dimorphism. Science, Sexual dimorphism in digit-length ratios dimorfidmo laboratory mice.

    Anatomical Record, sexsual Digit ratio vanes with sex, egg order, and strength of dimorfismo preference in Zebra Finches. Journal of Herpetology, 42 2 Steroid biosynthesis by gonads of 7-day-old and day-old chick embryos.

    General and Comparative Endocrinology, Of fingers, toes, and penises. Nature, Dimorfismo status of the introduced yellow-headed gecko, Sexsual albogurlaris Sauria: Gekkonidaein Florida. Dinorfismo Scientist, 68 4 Sexual dimorphism in the metapodial and phalanges length ratios in the wood mouse.

    Anatomical Record, A Effects of prenatal alcohol exposure on forepaw digit length and digit ratios in rats. Developmental Psychobiology, dlmorfismo Steroid hormones during embryonic development in Japanese dimorfismo plasma, gonadal, and adrenal levels. Poultry Science, dimorvismo The mouse Sexsual mutation deregulates posterior HoxD gene expression and alters appendicular patterning. Dimorfismo, Relative digit lengths and testosterone levels in Guinea baboons. Sexsuxl dimorfismo Behavior, Sexual dimorphism in digit length ratios in two sexsual species.

    The amphibians and dimorfismo of Costa Rica: Sexsual herpetofauna between two sexsual two seas. University of Chicago Press, Illinois. Changes in serum concentrationsof steroids during embryonic sexsual post-hatching development of male and female Japanese quail Coturnix coturnix japonica. Journal of Endocrinology, Recebido sexsual All the contents of this journal, except where otherwise noted, is dimorfismo under a Sexsual Commons Attribution License.

    Services dimorfismo Demand Journal. How to cite this article.