Results 31 to 40 of about 1,479,149 (388)

Trade-offs between personal immunity and reproduction in the burying beetle, N. vespilloides [PDF]

open access: yes, 2014
We know that parental investment and immune investment are costly processes, but it is unclear which trait will be prioritised when both may be required.
Cotter, Sheena C.   +3 more
core   +2 more sources

Abnormal development in larvae of Sesamia nonagrioides (Lepidoptera: Noctuidae) resulting from baculovirus-mediated overexpression of a JHE-related gene (SnJHER)

open access: yesEuropean Journal of Entomology, 2017
The Mediterranean corn borer Sesamia nonagrioides (Lepidoptera: Noctuidae) has a unique and recently multiplied juvenile hormone esterase gene family (SnJHER) with particular transcriptional profiles and functional characteristics.
Dimitrios KONTOGIANNATOS   +2 more
doaj   +1 more source

Gonadotropins in the Russian Sturgeon: Their Role in Steroid Secretion and the Effect of Hormonal Treatment on Their Secretion. [PDF]

open access: yes, 2016
In the reproduction process of male and female fish, pituitary derived gonadotropins (GTHs) play a key role. To be able to specifically investigate certain functions of Luteinizing (LH) and Follicle stimulating hormone (FSH) in Russian sturgeon ...
Aizen, Joseph   +8 more
core   +3 more sources

Effect of precocene II, ecdysone and juvenile Hormone on the glicogen concentration in pupae of Stomocys calcitram (Diptera muscidae)

open access: yesMemorias do Instituto Oswaldo Cruz, 1988
Third instar larvae of Stomoxys calcitrans (L.) were treated with precocene II, ecdysone and juvenile hormone. The larvae were allowed to develop until pupation and when it occurred, determination of glycogen levels was assayed.
M. L. M. Garcia   +2 more
doaj   +1 more source

Skeletal manifestations of juvenile hypothyroidism and the impact of treatment on skeletal system

open access: yesIndian Journal of Endocrinology and Metabolism, 2013
Thyroid hormone mediates growth and development of the skeleton through its direct effects and through its permissive effects on growth hormone. The effect of hypothyroidism on bone is well described in congenital hypothyroidism, but the impact of ...
Manish Gutch   +5 more
doaj   +1 more source

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

Defining behavioral and molecular differences between summer and migratory monarch butterflies

open access: yesBMC Biology, 2009
Background In the fall, Eastern North American monarch butterflies (Danaus plexippus) undergo a magnificent long-range migration. In contrast to spring and summer butterflies, fall migrants are juvenile hormone deficient, which leads to reproductive ...
Kanginakudru Sriramana   +4 more
doaj   +1 more source

Reconstruction of insect hormone pathways in an aquatic firefly, Sclerotia aquatilis (Coleoptera: Lampyridae), using RNA-seq [PDF]

open access: yesPeerJ, 2019
Insect hormones: ecdysteroids and juvenile hormones have crucial functions during the regulation of different developmental pathways in insects. Insect metamorphosis is one of the primary pathways regulated by these hormones.
Pornchanan Chanchay   +3 more
doaj   +2 more sources

Evaluation of the susceptibility of the pea aphid, Acyrthosiphon pisum, to a selection of novel biorational insecticides using an artificial diet [PDF]

open access: yes, 2009
An improved technique was developed to assay the toxicity of insecticides against aphids using an artificial diet. The susceptibility of the pea aphid Acyrthosiphon pisum (Harris) (Hemiptera: Aphidoidea) was determined for a selection of novel ...
Sadeghi, Amin   +2 more
core   +3 more sources

The Value of Comparative Animal Research : Krogh’s Principle Facilitates Scientific Discoveries [PDF]

open access: yes, 2017
There are no conflicts of interest to declare. This paper developed from the 2016 Early Career Impact Award from the Federation of Associations in Behavioral & Brain Sciences to TJS. TJS has received funding from The Leverhulme Trust.
Alward, Beau A.   +5 more
core   +2 more sources

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