Results: 262

Effect of photoperiod on ovarian maturation in Cheirodon interruptus (Teleostei: Characidae)

Braz. j. biol; 79 (4), 2019
Abstract Cheirodon interruptus is a ubiquitous small characid that inhabits the Pampean region and commonly used as bait. Its vast market is supplied from the wild population causing a significant environmental impact. In this study, we assess the effect of photoperiod on ovarian maturation in order to e...

Reproductive biology of pequira Bryconamericus stramineus (Eigenmann, 1908) in Funil Reservoir-MG, Brazil

Braz. j. biol; 79 (4), 2019
Abstract In order to evaluate aspects of reproductive biology of the "pequira" ( Bryconamericus stramineus) in the elevator of the Funil Dam - MG, fish capture was carried out from November 2008 to January 2009 and 317 individuals were collected. The mean standard length (SL) of the population was 4.96 ...

Biotic potential and reproductive parameters of Spodoptera cosmioides (Walker) (Lepidoptera: Noctuidae) in the laboratory

Braz. j. biol; 79 (3), 2019
Abstract In this study we evaluate the biotic potential and reproductive parameters of Spodoptera cosmioides (Walker, 1858) under controlled conditions (25 ± 1 °C, 70 ± 10% RH and 14 hour photophase). Females, on average, (14.433 days) did not live significantly longer than their male counterparts (1...

Trichospilus diatraeae (Hymenoptera: Eulophidae): development and reproduction in Lepidoptera palm oil pests

Braz. j. biol; 79 (3), 2019
Abstract Brazil is a leading palm oil producer, but the defoliating caterpillars Opsiphanes invirae Hübner Brassolis sophorae L. (Lepidoptera: Nymphalidae) can reduce the productivity of this crop. The aim of this study was to evaluate the development and reproduction of the parasitoid Trichospilus dia...

Quality of fresh and cryopreserved semen and their influence on the rates of fertilization, hatching and quality of the larvae of Piaractus mesopotamicus

Braz. j. biol; 79 (3), 2019
Abstract In this work, the seminal parameters of P. mesopotamicus were evaluated fresh and after cryopreservation, focusing on the sperm variables that affect the rates of fertilization, hatching and post-hatching parameters such as larval survival and morphology. The semen and oocytes from the animals ...

Efectos de la generación de energía hidroeléctrica en la reproducción de Prochilodus magdalenae (Prochilodontidae): evidencia de la respuesta endócrina

Rev. MVZ Córdoba; 24 (2), 2019
RESUMEN Objetivo. Describir la respuesta endocrina asociada con la reproducción de un pez potamódromo tropical ante cambios en el régimen de descarga de caudal producido por la generación de hidro-energía en un río Andino. Materiales y métodos. Se analizó la reproducción de Prochilodus magdale...

Respuesta superovulatoria en vacas donantes Brahman usando ablación folicular previo a protocolos de superovulación

Rev. MVZ Córdoba; 24 (2), 2019
RESUMEN Objetivo. Determinar el efecto de la ablación folicular en el inicio de un protocolo de superovulación (SPO) sobre la respuesta superovulatoria en vacas donantes de raza Brahman. Materiales y métodos. Se utilizaron 20 vacas de raza Brahman, las cuales fueron distribuídas aleatoriamente en d...

Adaptação cultural e confiabilidade da Reproductive Autonomy Scale para mulheres no Brasil

Resumo Objetivo Traduzir e adaptar a Reproductive Autonomy Scale para a cultura brasileira e avaliar a confiabilidade da versão adaptada. Métodos Estudo metodológico, que seguiu as etapas de tradução, consenso entre juízas, retro-tradução, validação semântica e pré-teste. A confiabilidade...

Reproductive and feeding biology of the common lancehead Bothrops atrox (Serpentes, Viperidae) from central and southwestern Brazilian Amazonia

Acta amaz; 49 (2), 2019
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 natural history of individuals from the central and southwestern portions of the biome. We analyzed ...

The influence of reproductive information quality on the probability of unplanned and unwanted pregnancies in Brazil

Background: Unplanned pregnancies are a significant risk factor for inadequate use of prenatal care, and unplanned newborns are prone to having low birth weight. Women with unplanned pregnancies have a higher probability of reporting medical problems before and during pregnancy. In fact, the wellbeing of...