Article Abstract:
The fat loads and flightlessness in Wilson's Phalaropes were examined by using a thorough observation of these birds. Results show that the total body mass of shorebird migrants is composed of 45% fat loads. Some adult Wilson's Phalaropes in their late adult stage become to heavy to fly. This condition is caused by a rapid increase in mass gain. However, the greatest rate of fat deposition among Phalaropes is only 60-70% of the theoretical maximum.
User Contributions:
Comment about this article or add new information about this topic:
Article Abstract:
A study on circulating prolactin of incubating male Wilson's Phalaropes was conducted to measure the effect of clutch size changes on their levels of circulating prolactin. Results show that males with increased or decreased clutch size had lower levels of circulating prolactin as compared to control sample males. Furthermore, incubating male Wilson's Phalaropes undergo adaptive endocrine change when potential fitness of their clutch is affected.
User Contributions:
Comment about this article or add new information about this topic:
Article Abstract:
A human prolactin enzyme-linked immunosorbent assay (ELISA) test kit is useful in finding avian prolactin concentrations in the House Wren. Replicate ELISA runs are useful when color intensity decreases over time because of the persistent reaction of sulfuric acid with the substrate chromogen. The sensitivity of the present ELISA is influenced by the fact that it is used against avian instead of human serum prolactin.
User Contributions:
Comment about this article or add new information about this topic: