Embryonic Development
Mostrando 25-36 de 2372 artigos, teses e dissertações.
-
25. Position-dependent correlation between TBX22 exon 5 methylation and palatal shelf fusion in the development of cleft palate
Abstract: DNA methylation is essential for spatiotemporally-regulated gene expression in embryonic development. TBX22 (Chr X: 107667964-107688978) functioning as a transcriptional repressor affects DNA binding, sumoylation, and transcriptional repression associated with X-linked cleft palate. This study aimed to explore the relationship and potential mechani
An. Acad. Bras. Ciênc.. Publicado em: 19/06/2019
-
26. Type II retrocaval ureter causing hydronephrosis in a cat: case report
RESUMO O ureter retrocava (UR) é originado por uma falha na formação embriológica da veia cava caudal (VCC), que leva ao aprisionamento do ureter dorsal à VCC. Na maioria dos casos, não há impacto clínico; entretanto, essa anomalia pode causar hidronefrose. Relata-se um raro caso de UR tipo II sintomático em um felino, tratado com nefroureterectomia
Arq. Bras. Med. Vet. Zootec.. Publicado em: 14/06/2019
-
27. Oxidative Stress of in-Ovo Ochratoxin A Administered during Chick Embryonic Development
ABSTRACT The present work was carried out to study the effect of in-ovo injection of ochratoxin A (OTA) as an oxidative stress and its consequences on hepatic and kidney functions, thyroid activity, and histological examination of brain and liver in chicken embryos and subsequently in the hatching chicks. On the 10th day of incubation, one hundred and sixty-
Braz. J. Poult. Sci.. Publicado em: 09/05/2019
-
28. Evaluation of the embryotoxicity in zebrafish (Danio rerio) of the flocculant and coagulant compounds used for water remediation
Resumo Objetivo: O carreamento decorrente das atividades de mineração atinge corpos d'água, causando contaminação da água e acidificação por metais tóxicos. Como conseqüência, a depleção de oxigênio ocorre, com o desaparecimento de certos organismos bênticos, perdas na biomassa do fitoplâncton e do zooplâncton, e mortalidade de peixes. Rem
Acta Limnol. Bras.. Publicado em: 25/04/2019
-
29. Reproductive biology of a viviparous lizard (Mabuya dorsivittata) from the subtropical Wet Chaco of Argentina: geographical variations in response to local environmental pressures
Herein we studied the reproductive biology of a viviparous lizard (Mabuya dorsivittata) from the Wet Chaco region (northeastern Argentina) and compared the results with other populations from the Espinal (central Argentina) and the Atlantic Forest (southeastern Brazil), and with other Neotropical species of Mabuya to better understand the possible causes of
An. Acad. Bras. Ciênc.. Publicado em: 21/03/2019
-
30. Development of Adrenal Glands from the Embryonic Phase to Puberty in Spix’s Yellow-toothed Cavies (Galea spixii, Wagler, 1831)
ABSTRACT Several authors have underscored the importance of establishing parameters in morphological development by gender comparison to establish clinical and pre-clinical assays through the use of experimental models. Current research compares the morphometry of right and left adrenal glands of males and females and describes differentiation of the cortex
Braz. arch. biol. technol.. Publicado em: 10/12/2018
-
31. Fecundity, embryo size and embryo loss in the estuarine shrimp Salmoneus carvachoi Anker, 2007 (Crustacea: Alpheidae) from a tidal mudflat in northeastern Brazil
Abstract Studies on fecundity and embryo size have been frequently used to infer about the reproductive potential, embryogenesis, and the energy investment in embryo production in crustaceans. These parameters are relevant to the knowledge of life-history and diversity of reproductive strategies developed by this group. This study addressed the embryo produc
Pap. Avulsos Zool.. Publicado em: 22/10/2018
-
32. Review of the family Rivulidae (Cyprinodontiformes, Aplocheiloidei) and a molecular and morphological phylogeny of the annual fish genus Austrolebias Costa 1998
ABSTRACT The family Rivulidae is the fourth most diverse clade of Neotropical fishes. Together with some genera of the related African family Nothobranchiidae, many rivulids exhibit a characteristic annual life cycle, with diapausing eggs and delayed embryonic development, which allows them to survive in the challenging seasonal ponds that they inhabit. Rivu
Neotrop. ichthyol.. Publicado em: 18/10/2018
-
33. Biometrical and morphological analyses of Macrobrachium olfersii (Wiegmann, 1836) (Crustacea, Decapoda, Palaemonidae) embryos exposed to UVA and UVB radiation
ABSTRACT Macrobrachium olfersii (Wiegmann, 1836) is a prawn that lives in shallow and transparent freshwater in Southern Brazil. Aquatic organisms that inhabit these systems can be exposed to incident UV radiation. Many studies have demonstrated the effects of ultraviolet (UV) radiation on the development, survival rate, morphological abnormalities, and impa
Nauplius. Publicado em: 21/06/2018
-
34. Asynchronous Hatching and Extended Parental Care in Aegla schmitti (Decapoda, Anomura)
ABSTRACT The aim of this study was to describe the behavior of newly-hatched juveniles and maternal care in Aegla schmitti. The experiment was conducted using seven ovigerous females with eggs at different stages of embryonic development and 12 eggs that had been placed in a separate aquarium. We observed asynchronous hatching in all females, with a mean of
Braz. arch. biol. technol.. Publicado em: 14/06/2018
-
35. Perinatal effects of scorpion venoms: maternal and offspring development
Abstract Scorpion envenomation is a public health problem, especially in tropical and subtropical countries. Considering the high incidence of scorpionism in some areas, pregnant women and nursing mothers may be possible victims. Scorpion stings alter the release of neurotransmitters and some cytokines. These mediators act as organizers and programmers in th
J. Venom. Anim. Toxins incl. Trop. Dis. Publicado em: 08/02/2018
-
36. A macroscopic classification of the embryonic development of the one-sided livebearer Jenynsia multidentata (Teleostei: Anablepidae)
ABSTRACT This study proposes eight stages according to the main discernible changes recorded throughout the embryonic development of Jenynsia multidentata. The development of morphological embryo structures, pigmentation, and changes in tissues connecting mother and embryo were included in the stage characterization. From the fertilized egg (Stage 1), an emb
Neotrop. ichthyol.. Publicado em: 18/12/2017