Cerca risorse accademiche

Abstract Assisted reproductive technology (ART) has been evolving since 1978, with the number of techniques performed increasing over the years. Despite continued advances, some couples continue to have difficulties gett...

Materie / parole chiave: Infertility, Female; Psychological aspects; Infertility; Patients; Counseling of; Human reproductive technology

Multiple epidemiological studies across countries have linked exposure to endocrine-disrupting chemicals (EDCs) with adverse reproductive outcomes; however, the underlying mechanisms remain incompletely characterized. In...

The Strange-tailed Tyrant (Alectrurus risora) is an endangered obligate grassland bird that inhabits savannas, wet grasslands and marshes in southern Paraguay and northeastern Argentina. We evaluated the extent of social...

ABSTRACT In this study, we aimed to provide a wet laboratory validation for a set of single nucleotide polymorphisms (SNP), which had been identified as candidate functional variants in silico. Genotyping for candidate S...

Os objetivos deste trabalho foram estimar parâmetros genéticos para as características perímetro escrotal (PE), medido aos 12 (PE12, n = 652) e 18 (PE18, n = 607) meses de idade, idade ao primeiro parto (IPP, n = 158...

Hyperpolarization of the membrane potential (Em), a phenomenon regulated by SLO3 channels, stands as a central feature in sperm capacitation-a crucial process conferring upon sperm the ability to fertilize the oocyte. In...

ABSTRACT An adult, female, 31kg body weight, free range Myrmecophaga tridactyla was referred for medical consultation due to apathy, dehydration, intense flatulence and fetid stools. The animal was submitted to chemical ...

ABSTRACT This study aimed to evaluate the reproductive performance of female Nile tilapia (Oreochromis niloticus) fed diets containing different levels of digestible energy (DE). The fish were housed in 15 fiberglass tan...

Macrobrachium surinamicum is an indigenous prawn distributed from the lower Amazon and Tocantins river basins to Venezuela in the Orinoco Delta region. It is common bycatch fauna of Macrobrachium amazonicum artisan fishi...

The reproductive cycle of Zygochlamys patagonica was studied from October 1999 to February 2001 in a bed located in the south-western Atlantic (Reclutas bed 39°24′ S-55°56′W). Scallops were collected monthly and th...

ABSTRACT The pitviper Bothrops atrox is a widely distributed and medically important snake in Amazonia. Given that the reproductive and feeding biology of snakes varies geographically, we aimed to characterize the natura...

Macrobrachium amazonicum is an indigenous prawn vastly distributed in basins of South America, widely exploited by artisanal fisheries in northern and northeastern Brazil and, with great potential for aquaculture. This s...

Floral mechanisms that ensure seed production via autogamy are more likely to occur in species growing in environments where pollination is scarce. Amasonia obovata was studied in the State of Mato Grosso-Brazil, from 20...

This study evaluated the reproductive dynamics and gonadal morphology of piaparas (Leporinus obtusidens) captured downstream from the Funil Hydroelectric Power Station. The 107 piaparas evaluated were captured monthly fr...

The aim of this study was to verify the efficacy of reusing intravaginal progesterone (P4) devices on the reproductive parameters in Santa Inês ewes. Females received intravaginal P4 devices for their first, second or t...

ABSTRACT Reproduction is crucial for species survival, influencing population dynamics and fitness. For female small mammals, pregnancy and lactation are energetically costly activities and thus are typically timed to co...

The total lengths (LT) of 193 males (209-556mm) and 130 females (275-515mm) of Amblyraja doellojuradoi, a commercial by-catch species on the Argentinean continental shelf, which are increasingly retained, were analysed. ...

Abstract This experiment was designed to study the effect treatment with sodium fluoride (200,400 ppm) with drinking water to mother rats during lactation on reproductive efficiency of their male pups at age of 21 days a...

In insects, aging produces deterioration in physiological and cellular functioning, affectingtheir reproductive potential. Anastrepha fraterculus and Ceratitis capitata aretwo fruit fly species where overwintering adults...

ABSTRACT The objective of this study was to evaluate the effect of timed artificial insemination (TAI) on pregnancy rates, reproductive efficiency, and mean weaning weight of calves at the end of breeding season in Nello...

IntroductionThe vertebrate nonapeptide vasotocin (Avp) is evolutionarily conserved and homologous to mammalian vasopressin. Previous work using avp-/- zebrafish demonstrated a role for Avp in female, but not male, zebraf...

OBJETIVO: avaliar os efeitos da administração de dois esteroides sintéticos sobre a morfologia do útero e parâmetros reprodutivos de ratas adultas. MÉTODOS: quarenta ratas foram aleatoriamente distribuídas nos gru...

ABSTRACT The aim of this study was to evaluate swine females of different genetic lines submitted to different reproductive management and housing systems during pregnancy on reproductive performance and animal welfare p...