Numerous populations of salmon and trout undergo extensive migrations, migrating from freshwater to the sea and throughout ocean basins. Years later they return to their natal streams with remarkable accuracy and precision. The outward migration is accomplished without the benefit of following experienced migrants or prior individual experience. Evidence suggests...
We used simulated magnetic displacements to test orientation preferences of
juvenile steelhead trout (Oncorhynchus mykiss) exposed to magnetic fields
existing at the northernmost and southernmost boundaries of their oceanic
range. Fish reared in natural magnetic conditions distinguished between
these two fields by orienting in opposite directions, with headings that
would...
Full Text:
correspondence:
NathanF. Putman
e-mail: nathan.putman@gmail.com
Electronic supplementary material is available
We used simulated magnetic displacements to test orientation preferences of
juvenile steelhead trout (Oncorhynchus mykiss) exposed to magnetic fields
existing at the northernmost and southernmost boundaries of their oceanic
range. Fish reared in natural magnetic conditions distinguished between
these two fields by orienting in opposite directions, with headings that
would...
Full Text:
Sheet1
NathanF. Putman, Amanda M. Meinke, and David L. G. Noakes
Rearing
Long-distance migrants, including Pacific salmon (Oncorhynchus
spp), can use geomagnetic information to navigate. We tested
the hypothesis that a “magnetic map” (i.e., an ability to extract
positional information from Earth’s magnetic field) also exists in a
population of salmon that do not undertake oceanic migrations.
This study examined juvenile Atlantic...
We used simulated magnetic displacements to test orientation preferences of juvenile steelhead trout (Oncorhynchus mykiss) exposed to magnetic fields existing at the northernmost and southernmost boundaries of their oceanic range. Fish reared in natural magnetic conditions distinguished between these two fields by orienting in opposite directions, with headings that would...
The inaccessibility of open ocean habitat and the cryptic nature of small
animals are fundamental problems when assessing the distribution of
oceanic-stage sea turtles and other marine animals sharing similar life-history
traits. Most methods that estimate patterns of abundance cannot be
applied in situations that are extremely data limited. Here,...
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oceanic-stage Kemp’s ridley sea turtles
NathanF. Putman, Katherine L. Mansfield, Ruoying He, Donna J
The inaccessibility of open ocean habitat and the cryptic nature of small
animals are fundamental problems when assessing the distribution of
oceanic-stage sea turtles and other marine animals sharing similar life-history
traits. Most methods that estimate patterns of abundance cannot be
applied in situations that are extremely data limited. Here,...
Full Text:
Mexico
Author for correspondence:
NathanF. Putman
e-mail: nathan.putman@gmail.com
Electronic
The inaccessibility of open ocean habitat and the cryptic nature of small animals are fundamental problems when assessing the distribution of oceanic-stage sea turtles and other marine animals sharing similar life-history traits. Most methods that estimate patterns of abundance cannot be applied in situations that are extremely data limited. Here,...
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The chlamydiae are a family of obligate intracellular bacteria that have a unique bi-phasic developmental cycle, unique cellular properties, and a unique set of challenges to studying its biology. While genetic manipulation is becoming routine in Chlamydia, there are significant challenges to working with this intracellular parasite. The body of...