Results 51 to 60 of about 80,118 (189)

Correlations between environmental salinity levels, blood biochemistry parameters, and steroid hormones in wild juvenile American alligators (Alligator mississippiensis)

open access: yesScientific Reports, 2021
American alligators (Alligator mississippiensis) inhabit freshwater wetlands that are vulnerable to salinization caused by anthropogenic alterations to freshwater flow, in addition to storm surges, sea level rise, and droughts.
Patricia C. Faulkner   +3 more
doaj   +1 more source

Adaptive host responses to infection can resemble parasitic manipulation

open access: yesEcology and Evolution, 2023
Using a dynamic optimisation model for juvenile fish in stochastic food environments, we investigate optimal hormonal regulation, energy allocation and foraging behaviour of a growing host infected by a parasite that only incurs an energetic cost.
Camilla Håkonsrud Jensen   +5 more
doaj   +1 more source

Characterization of the juvenile hormone pathway in the viviparous cockroach, Diploptera punctata.

open access: yesPLoS ONE, 2015
Juvenile hormones (JHs) are key regulators of insect development and reproduction. The JH biosynthetic pathway is known to involve 13 discrete enzymatic steps.
Juan Huang   +3 more
doaj   +1 more source

Action of the Metalloproteinases in Gonadal Remodeling during Sex Reversal in the Sequential Hermaphroditism of the Teleostei Fish Synbranchus marmoratus (Synbranchiformes: Synbranchidae) [PDF]

open access: yes, 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

Comparison of Predicted Amino Acid Sequences of Allatotropin/Allatostatin Receptors from Solitary to Eusocial Bee Species (Hymenoptera, Apoidea)

open access: yesJournal of Apicultural Science, 2019
An increasingly amount of evidence supports that the evolution of eusociality is accompanies by shifts in ancient molecular and physiological pathways. The juvenile hormone, one of the most important hormones in the post-embryonic development of insects,
Yang Huipeng, Wu Jie
doaj   +1 more source

Development of lateralization of the magnetic compass in a migratory bird [PDF]

open access: yes, 2012
The magnetic compass of a migratory bird, the European robin (Erithacus rubecula), was shown to be lateralized in favour of the right eye/left brain hemisphere.
Batschelet E.   +5 more
core   +1 more source

Thyroxine and triiodothyronine concentrations in juvenile Oncorhynchus mykiss when supplementing the diet with organomineral chelate complexes [PDF]

open access: yesBIO Web of Conferences
The paper presents data on the concentration of thyroxine and triiodothyronine in juvenile golden trout when enriching their diet with organomineral chelate complexes.
Makhnin I. A.   +3 more
doaj   +1 more source

Follicular Development and Secretion of Ovarian Hormones during the Juvenile and Adult Reproductive Lives of the Myelin Mutant taiep Rat: An Animal Model of Demyelinating Diseases

open access: yesInternational Journal of Endocrinology, 2018
Infertility and reproductive problems have been reported in women with several neurological disorders, for example, demyelination. However, the physiology of such problems has remained unknown so far.
L. P. Muñoz-de-la-Torre   +4 more
doaj   +1 more source

Fish and amphibians as test organisms for evaluation of effects caused by chemicals [PDF]

open access: yes, 2007
A large number of chemicals can contaminate aquatic environments and therefore be exposed to fish and amphibians during their sensitive stages of development.
Carlsson, Gunnar
core  

Changes of hormons (T3, T4 and cortisol) and ions (Na+, Cl-, K+) during smoltification in Salmo trutta caspius Kessler 1877

open access: yes‬‭Majallah-i ̒Ilmī-i Shīlāt-i Īrān, 2012
Salmo trutta caspius is an important and economic fish in the Caspian Sea has several morphological and physiological changes during smoltification.
D. Mohammadrezaei email ; B. Majazi Amiri; M. Farhangi
doaj  

Home - About - Disclaimer - Privacy