Sex-change chemicals and their influence on the brain. [PDF]
, 2001 The potential for man-made chemicals to mimic or antagonise natural hormones is a controversial issue, but one for which increasing amounts of evidence are being gathered worldwide.
Harris, CA
core +3 more sources
Maturation of the pituitary--gonadal system in the male rat [PDF]
Reproduction, 1978 Serum FSH and testosterone concentrations reached maximum levels between 35 and 45 days of age, which coincided with the appearance of mature spermatozoa in the majority of seminiferous tubules. Spermatozoa were not observed in sections of the urethra until the age of 46 days.
B E, Piacsek, M P, Goodspeed
openaire +2 more sources
Duplicated membrane estrogen receptors in the European sea bass (Dicentrarchus labrax): Phylogeny, expression and regulation throughout the reproductive cycle [PDF]
, 2018 The numerous estrogen functions reported across vertebrates have been classically explained by their binding to specific transcription factors, the nuclear estrogen receptors (ERs).
Alvarado, M. Victoria +5 more
core +1 more source
Treatment of Girls and Boys with McCune-Albright Syndrome with Precocious Puberty - Update 2017 [PDF]
, 2017 The most common endocrinopathy associated with McCune-Albright Syndrome (MAS) is peripheral precocious puberty (PP) which occurs far more often in girls than in boys.
Eugster, Erica A., Neyman, Anna
core +1 more source
A case of intersex occurrence in Steindachneridion parahybae (Steindachner, 1877) (Siluriformes: Pimelodidae) under captivity condition: A cytogenetic and morphological study [PDF]
, 2016 Poco se sabe sobre la biología reproductiva de Steindachneridion parahybae , una especie de teleósteo gonocorístico en peligro de extinción que habita la cuenca del río Paraíba do Sul y en éste trabajo se describe por primera vez la aparición de ...
Caneppele, Danilo +4 more
core +2 more sources
Jurnal Medik VeterinerBarred loach Nemacheilus fasciatus are unable to reproduce naturally in captivity due to the lack of environmental cues and gonadal maturation occurs slower than in the wild.
Darmawan Setia Budi +5 more
doaj +1 more source
Comparative analysis of the reproductive activity of Leporinus piau (Characiformes: Anostomidae) in lentic and lotic environments [PDF]
Neotropical Ichthyology, 2020 In this study, we determined the main reproductive parameters of piau gordura, Leporinus piau, in two sections of the São Francisco River basin. Between May 2015 and April 2016, a total of 573 specimens were captured from a lentic environment (section 1),
Aline Virtude do Nascimento +5 more
doaj +2 more sources
Action of the Metalloproteinases in Gonadal Remodeling during Sex Reversal in the Sequential Hermaphroditism of the Teleostei Fish Synbranchus marmoratus (Synbranchiformes: Synbranchidae) [PDF]
, 2018 Teleostei present great plasticity regarding sex change. During sex reversal, the whole gonadincluding the germinal epithelium undergoes significant changes, remodeling, and neoformation.However, there is no information on the changes that occur within ...
Antoneli, Fernanda +3 more
core +2 more sources
International Aquatic Research, 2014 The present study was undertaken to determine the effects of polyunsaturated fatty acids (PUFAs) on histomorphological structure of liver, developmental stages of ovary, serum calcium (Ca2+) level, sperm quality and spontaneous spawning performance of ...
M. Hossen +4 more
semanticscholar +1 more source
Integrated Environmental Assessment and Management, EarlyView., 2023 Abstract In the Lake Koocanusa‐Kootenai River system (Montana, USA and British Columbia, Canada), selenium (Se) contamination has become an international concern and is suspected to contribute to the observed burbot (Lota lota) population collapse. Due to our limited ability to sample burbot in Lake Koocanusa for monitoring studies, we used a reference
Stephanie D. Graves +6 more
wiley +1 more source