The present study indicates that the AASC in the Yangtze River also has an impact on the breeding migration of A. sinensis.
This study confirmed that sediment reduction has had adverse effects on the breeding migration of A. sinensis.
For instance, as the breeding migration of the adults and seaward migration of the juveniles extend over three consecutive years in the river, the AFC over this period was analyzed with respect to its relationship to the NSMJC.
The spring breeding migrations of wood frogs and spotted salamanders to experimental pools were not affected by the forestry treatments.
In a two-year field study in an intensively cultivated landscape in northeast Germany, we quantified the temporal coincidence of fertiliser applications with the breeding migrations of adult amphibians.
Open image in new window Figure 1 Diagram of the course of A. sinensis breeding migration (Yangtze Aquatic Resources Survey Group 1988).
Routine energy expenditure (Ei) is the extra energy required to go about daily routines of foraging, breeding, migration, etc. throughout the year (Table 1).
The concentration gradient of suspended matter is likely the signal that guides the adult A. sinensis to the estuary entrance for breeding migration.
Because of the reluctance of Crawfish Frogs to move laterally along drift fences [96], we are present most nights when breeding migrations occur, and capture a large proportion of Crawfish Frogs along the fence or as they approach the fence, before they can enter buckets.
Also, paedomorphs remain in their breeding habitat, limiting mortality from breeding migrations and providing the chronological advantage of early arrival [ 23, 25].
Here, we investigated the movements and diving behaviour of both north and south Atlantic leatherback turtles during the post-breeding migration of 12 individuals from three different nesting sites and 4 individuals captured at one foraging site to assess the potential determinants of intra- and inter-population variability in migratory patterns.
