Results 31 to 40 of about 448,134 (326)
Scientific Reports, 2020 Phoenixin-20 (PNX-20) is a bioactive peptide with hormone-like actions in vertebrates. In mammals, PNX stimulates hypothalamo-pituitary-gonadal hormones and regulate reproductive processes.
J. J. Rajeswari, S. Unniappan
semanticscholar +1 more source
Ligula intestinalis (Cestoda: Pseudophyllidea): an ideal fish-metazoan parasite model? [PDF]
, 2010 Since its use as a model to study metazoan parasite culture and in vitro development, the plerocercoid of the tapeworm, Ligula intestinalis, has served as a useful scientific tool to study a range of biological factors, particularly within its fish ...
Carter, V, Dufour, S, Hoole, D
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Testicular growth and comb and wattles development in three Italian chicken genotypes reared under free range conditions [PDF]
, 2015 Male chickens belonging to three Italian purebreds \u2013 Ermellinata di Rovigo (ER), Robusta lionata (RL) and Robusta maculata (RM) \u2013 were studied. All the birds were reared under the same rearing conditions (from May until autumn).
DE FASSI NEGRELLI RIZZI, Chiara +1 more
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Studies on Gonad Maturity in Some Marine Invertebrates-II
NIPPON SUISAN GAKKAISHI, 1971 The present paper deals with histological observations of the reproductive organs of the lined shore crab, Pachygrapsus crassipes, (Grapsidae, Brachyura), known as a common crab which widely inhabits the rocky beaches of the Japanese Islands. The materials used were collected from the coast of Niigata City, facing the Japan Sea, and the period of ...
Akira CHIBA, Yoshiharu HONMA
openaire +4 more sources
Assessment of gonadal maturation by evaluation of spermaturia. [PDF]
Archives of Disease in Childhood, 1990 The urinary excretion of spermatozoa (spermaturia) reflects the achievement of exocrine testis function during male puberty. In order to test the sensitivity and practicability of repetitive urine sampling, we analysed the sediments of 1160 first morning urine specimens obtained on successive days from 129 healthy schoolboys aged 10.1 to 17.8 years for
F, Schaefer +4 more
openaire +2 more sources
IOP Conference Series: Earth and Environment, 2019 Spawning of pedih fish (Tor douronensis) is seasonal that occur twice a year. This causes limitation of mature broodstock. Therefore, the study was done to examine the effect of PMSG + antidopamin hormone in accelerating gonadal maturity female ...
S. Mellisa +4 more
semanticscholar +1 more source
EFECT OF LASERPUNCTURE INDUCTION TO INCREASE GSI AND HSI MALE CATFISH BROODSTOCKS
JFMR-Journal of Fisheries and Marine Research, 2020 Induction of laser puncture in the male catfish broodstock has a positive influence by increasing reproductive activity which is very helpful for the process of gonadal maturation.
Dyah Hariani +3 more
doaj +1 more source
Differential leucokocyte counts in ''dourado'', Salminus maxillosus Valenciennes, 1840, from the Mogi-Guaçu River, Pirassununga, SP [PDF]
Brazilian Journal of Biology, 2003 From August, 1996 to December, 1997, 293 of ''dourado'' specimens, Salminus maxillosus (Valencienes, 1840), of various sizes, were caught in Mogi-Guaçu River, Emas Falls, for hematologic studies.
M. J. T. Ranzani-Paiva +4 more
doaj +1 more source
Minipuberty of human infancy – A window of opportunity to evaluate hypogonadism and differences of sex development? [PDF]
Annals of Pediatric Endocrinology & Metabolism, 2020 Activation of the hypothalamic-pituitary-gonadal (HPG) axis happens in 3 phases during life. The first phase is during fetal life and is only separated from the second phase, called minipuberty, by the high concentration of placental hormones at birth ...
Christoffer Højrup Renault +5 more
doaj +1 more source
On the origin of trisomy 21 Down syndrome [PDF]
, 2008 Background: Down syndrome, characterized by an extra chromosome 21 is the most common genetic cause for congenital malformations and learning disability.
Hultén, Maj A. +6 more
core +2 more sources