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173.607  Articles
1 of 17.362 pages  |  10  records  |  more records»
Triatoma infestans is the main vector of the parasite that causes the Chagas disease in South America. It is known that T. infestans has different reproductive and development patterns depending on whether they feed on birds or mammals. Using the head of ... see more

Introduction. Sexual dimorphism in children aged 4 to 6 years, which concerns the number of characteristics of body trunk with significant correlations with the characteristics of feet and differentiating female from male individuals, is greater, with the... see more

La diferencia morfológica entre sexos puede variar reflejando la calidad de vida dominante en una población. La información para San Pedro de Atacama es analizada para evaluar a partir de una muestra de 624 individuos y 35 variables craneom... see more

Sexual size dimorphism (SSD) is a common phenomenon in most mammalian and poultry species. This study was undertaken to investigate SSD in nondescript locally adapted Muscovy ducks in Nigeria by applying descriptive analysis, sexual dimorphism index (SDI)... see more

We have used a non-invasive method to predetermine the sex of chicken embryosthat relies on the bio electromagnetic field generated by the embryonic cells. Tovalidate this method in poultry, on the basis of sexual dimorphism, the genetic sex of120 chicken... see more

This article presents an elaboration of the protocol for the method of sexing wild birds based on the polymorphism of the CHD gene using P2/P8 primer for Common Pheasant – Phasianus colchicus (Linnaeus, 1758; Galliformes, Phasianidae); Silver Lofur or Sil... see more

Abstract · The Green-backed Firecrown (Sephanoides sephaniodes; Trochilidae) is one of the most important pollinators in the temperate rainforests of southern South America, yet its life history, including migratory behavior, population dynamics, and poll... see more

Abstract· There is little information on the body condition of the Upland Sandpiper (Bartramia longicauda) during migration. We measured biometric traits and body condition parameters of B. longicauda in central Mexico in 2016 and 2017. Mean morphometric ... see more

Despite a long history of phocid studies, no fossil members of the Subfamily Cystophorinae have ever been described. New fossil material from the Middle Sarmatian (11.2-12.3 Ma) in the Paratethyan Basin of Ukraine allows emended diagnoses and redescriptio... see more

1 of 17.362 pages  |  10  records  |  more records»