Results 21 to 30 of about 49,943 (331)

Anxious to see you: Neuroendocrine mechanisms of social vigilance and anxiety during adolescence. [PDF]

open access: yes, 2020
Social vigilance is a behavioral strategy commonly used in adverse or changing social environments. In animals, a combination of avoidance and vigilance allows an individual to evade potentially dangerous confrontations while monitoring the social ...
Cassano G. B.   +6 more
core   +1 more source

Induksi Kematangan Gonad Induk Jantan Kerang Abalone (Haliotis asinina) dengan Metode Laserpunktur
[Induction Of Gonad Maturity Males Broodstock Abalone Shell (Haliotis asinina) With Laserpunctur Methods ]

open access: yesJurnal Ilmiah Perikanan dan Kelautan, 2012
Abalone is one kind of shellfish fisheries of the world has become a commodity which is currently experiencing increased demand, especially from international markets.
Sudarno Sudarno   +2 more
doaj   +1 more source

Zygoparity and sex steroid hormone profiles in bluemouth Helicolenus dactylopterus [PDF]

open access: yes, 2017
Two hundred and seven individuals (103 females and 104 males) of bluemouth Helicolenus dactylopterus (Scorpaeniformes, Sebastidae), a commercially important deep-water species with an unusual reproductive strategy, from the eastern Atlantic Ocean ranging
Barcellos   +30 more
core   +1 more source

Cyclic changes in gonadal maturation and histological observations of threatened freshwater catfish "narikeliru" Mystus montanus (Jerdon, 1849) [PDF]

open access: yesActa Ichthyologica et Piscatoria, 2004
Background. Usage of biosciences in increasing fish production needs to have a proper understanding and knowledge of endocrine physiology of fish reproduction.
A.J. Arockiaraj   +3 more
doaj   +3 more sources

Ligula intestinalis (Cestoda: Pseudophyllidea): an ideal fish-metazoan parasite model? [PDF]

open access: yes, 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
core   +1 more source

Peripheral and central mechanisms involved in hormonal control of male and female reproduction [PDF]

open access: yes, 2016
Reproduction involves the integration of hormonal signals acting across multiple systems togenerate a synchronized physiological output. A critical component of reproduction is the luteinizinghormone (LH) surge, which is mediated by estradiol (E2) and ...
Bentley, G. E.   +6 more
core   +1 more source

EFECT OF LASERPUNCTURE INDUCTION TO INCREASE GSI AND HSI MALE CATFISH BROODSTOCKS

open access: yesJFMR-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]

open access: yesBrazilian 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

Studies on Gonad Maturity in Some Marine Invertebrates-II

open access: yesNIPPON 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

Sex-change chemicals and their influence on the brain. [PDF]

open access: yes, 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

Home - About - Disclaimer - Privacy