2002), which makes it surprising that these individuals molted
at all given the wide migratory range and aggressive nature of the blue crab.
The male and all female eiders molted
within 50 km of their breeding area.
Twenty-one percent (28) of lobsters tagged in the premolt stage that molted
had a misaligned tag (pulled to one side).
Female crabs 11, 13, and 14 (70-83 mm CW) were assumed to be age 2 in June 1997, and had molted
twice (105-118 mm CW) by age 3 the following June.
This study showed that breeding performance of greater snow geese nesting on Bylot Island had a strong influence on migratory patterns of this population: the majority of successful nesters molted
on the island, whereas most non-breeding and failed-nesting birds left the island to molt elsewhere.
We studied the development of the eyes by viewing the postmolt animals and molted
carapaces with a Nikon SMZ-2T dissecting microscope.
Injections were done weekly until lobsters molted
. Injections were performed into the abdomen at the junction of the soft cuticle of the posterior abdominal leg attachments.
Levels remained low until 1[degrees] LB growth resumed, and the animals eventually molted
. However, resumption of 1[degrees] LB growth did not always follow an increase in ecdysteroid concentration.
Distance sex pheromones are secreted in water by premolt female-role EP shrimp, whereas contact sex pheromones are coated on the body of newly molted
EP shrimp and are not water soluble (Zhang & Lin 2006).
One might expect that a newly molted
animal would have difficulty doing much of anything until the exoskeleton hardens.
Larger crabs molted
to morphometric maturity in a greater proportion with no influence of ration or temperature.
When returned to full feed after several weeks, Holt explains, "these molted
birds can produce about 90 percent of what their optimum was before." While unmolted hens usually have to ingest about 50,000 Salmonella cells to become infected, molted
birds need fewer than 10, Holt found.