Conservation of the photoperiodic neuroendocrine axis among vertebrates: Evidence from the teleost fish, Gasterosteus aculeatus

Conservation of the photoperiodic neuroendocrine axis among vertebrates: evidence from the teleost fish, Gasterosteus aculeatus.

Photoperiod, or length of day, has a predictable annual cycle, making it an important cue for the timing of seasonal behavior and development in many organisms. Photoperiod is widely used among temperate and polar animals to regulate the timing of sexual maturation. The proper sensing and interpretation of photoperiod can be tightly tied to an organism's overall fitness. In photoperiodic mammal...

Evidence of trophic transfer of microcystins from the gastropod Lymnaea stagnalis to the fish Gasterosteus aculeatus.

According to our previous results the gastropod Lymnaea stagnalis exposed to MC-producing cyanobacteria accumulates microcystins (MCs) both as free and covalently bound forms in its tissues, therefore representing a potential risk of MC transfer through the food web. This study demonstrates in a laboratory experiment the transfer of free and bound MCs from L. stagnalis intoxicated by MC-produci...

The Relationship between Prolactin Cell Activity, Environmental Calcium, and Plasma Calcium in the Teleost Gasterosteus aculeatus. Observations on Stanniectomized Fish

The relationship between prolactin cell activity, environmental calcium, and plasma calcium in the teleost Gasterosteus aculeatus. Observations on stanniectomized fish.

The Relationship between Prolactin Cell Activity, Environmental Calcium, and Plasma Calcium in the Teleost Gasterosteus aculeatus. Observations on Stanniectomized Fish