Ontogenetic variations
Temporal and ontogenetic variations in feeding habits of Hollandichthys multifasciatus (Teleostei: Characidae) in coastal Atlantic rainforest streams, southern Brazil
... to ontogenetic variations have been the object of broad discussion in the literature (Nikolsky, 1963; Machado-Allison & Garcia, 1986; Winemiller, 1989; Gerking, 1994; Hahn et ...
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Ontogenetic variations and feeding habits of a Neotropical annual fi sh from southern Brazil
... These ontogenetic changes in annual fish populations may reduce a potential intraspecific competition for prey items through diet segregation or by reducing direct interactions through spatial and/or temporal ...
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Seasonal and ontogenetic variations in the diet of
... are ontogenetic differences, mainly related to prey type, such as: Ephemeroptera consumed by the immature peacock bass and fish by the mature ones, besides the size of the ...
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Ecologia trófica de Pachyurus bonariensis Steindachner, 1879 (Sciaenidae: Perciformes) no Rio Ibicuí, sul do Brasil: variações ontogenéticas, sazonais e espaciais
... The ontogenetic variations were confirmed as the most important for ...The ontogenetic pattern shown by this species in the Ibicuí River is widely observed in fish diets (Hahn et ...2006). ...
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Diet of Hemigrammus marginatus (Characiformes: Characidae) in the Upper Contas River, Diamantina Plateau (Bahia, Brazil)
... and ontogenetic variations in the diet of a characid species [Hemigrammus marginatus Ellis, 1911 (Characidae)] in the region of the Upper Contas River, in the Diamantina Plateau, ...
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Ontogenetic Shape Change in the Chicken Brain: Implications for Paleontology.
... or ontogenetic variations in the brains of fossil taxa have been rarely examined, since multiple specimens of one species or a close taxon are rarely ...show ontogenetic change contain phylogenetic ...
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Feeding habits and morphometry of Iheringichthys labrosus (Lütken, 1874) in the Uruguay River (Uruguay)
... Body size and diet of organisms are fundamental attributes which determine their ecology and natural history. Iheringichthys labrosus is one of the most common fish species of the Uruguay River. However, its natural ...
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Soft inheritance: Challenging the Modern Synthesis
... Epigenetic control mechanisms, and especially the inter-related chromatin and RNA-based EISs, are very hot topics in basic and applied research, as can be seen from the publication in 2007 of special issues of journals ...
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Sound production in the Meagre, Argyrosomus regius (Asso, 1801): intraspecific variability associated with size, sex and context
... ascertain ontogenetic phase (Sprague & Luczkovich, 2001), or to chart temporal and spatial patterns of meagre reproduction through the detection of spawning sounds as in other sciaenids (Connaughton & ...
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SENSIBILIDADE A DICAS SOCIAIS HUMANAS E COMPORTAMENTOS EMERGENTES EM CÃES DOMÉSTICOS (CANIS FAMILIARIS) Isabela Zaine
... Determining conditions in which an organism learns conditional discriminations is a significant matter to psychologists, since this behavior seems to be a prerequisite for multiple complex relational repertoires. The ...
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The ammonoids from the Argiles de Timimoun of Timimoun (Early and Middle Viséan; Gourara, Algeria)
... minor ontogenetic changes of conch geometry: conch subevolute in early juveniles and involute in the adult stage; conch becoming discontinuously more slender during ontogeny: thinly pachyconic in the early ...
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Effects of season, temperature, and body mass on the standard metabolic rate of tegu lizards (Tupinambis merianae)
... (or causative of) any significant changes in metabolism (see also Chappell and Ellis 1987). This, however, is a weak con- clusion because differences in sample size over different parts of the body size range in ...
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Embryonic and larval development of Lipophrys pholis (Pisces: Blenniidae)
... – Ontogenetic events of embryonic development of Lipophrys pholis in order of first appearance: (1) blastodisc; (2) embryo recog- nizable; (3) cephalic and caudal dilatation; (4) eye lens; (5) brain; (6) notochord ...
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Diet of the endangered big-headed turtle Platysternon megacephalum
... Ontogenetic changes in diet may represent a continuous transition, and an ontogenetic shift in diet may not be easily detected by comparison of sex and age groups. Therefore, we conducted logistic ...
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WELL-SEISMIC INTEGRATION TO PORE PRESSURE PREDICTION USING MULTIVARIATE GEOSTATISTICS: A CASE STUDY IN A BRAZILIAN EQUATORIAL MARGIN BASIN
... that variations in seismic velocity are intrinsically related to variations in pore pressure and that their spatial distribution certainly contributes to improving the model strictly based on the sparse ...
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Ot omorphs (= otocephalans or ostarioclupeomorphs) revisited
... Ontogenetic studies of clupeiforms and ostariophysans have shown that the so-called processes of the preural cen- trum 1, or pleurostyle of Monod (1968), may have different origins and topographic relationships. ...
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Benthic foraminifera as palaeo-environmental indicators in the Northern Gulf of Cadiz
... muddy substrate, low hydrodynamic levels, low levels of oxygen and high content of organic matter (Chapter 3). This could indicate that at 72 m water depth, these conditions began to be established after ca. 4000 Cal yr ...
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RELATIONSHIP BETWEEN BIOGAS PRODUCTION AND VARIATIONS IN ELECTRIC RESISTIVITY IN LANDFILL OF RIO CLARO CITY, BRAZIL
... Biogas production in the drain 5 was relatively constant over the period of 1 year with small variations possibly related to rain- fall. The resistivity measurements were not directly or indirectly correlated to ...
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Differentiation of Siberian Miners’ Salaries in Late XIX – Early XX Centuries
... seasonal variations and differentiation of Siberian miners‘ salaries in late XIX – early XX centuries, proves that seasonal variations of salaries depended on the excess demand on labor in summer and the ...
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Hidrocistomas múltiplos apócrinos: um diagnóstico clínico confuso.
... They have equal sex incidence. They are dome shaped, may be trans- parent, translucent or even bluish black which is sup- posed to be due to Tyndal effect. Solitary AH have no seasonal variations but multiple ...
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