Videos

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  • Spots on Blueberry Leaves is very common this year (2019) in the Juneau area.
  • I have noticed a lot of plants with these spots on the Spaulding Meadow Trail, in the vicinity of Amalga Harbor, along the Outer Point Trail on Douglas Island and along the trails in the Eagle Beach area.
  • I have collected several leaves for analysis.
  • It looks like one of the leaf fungus which has been known to spread to the fruits.
  • For more information about this fungus look at /sites/default/files/Exibasidium%20leaf%20and%20fruit%20spot%20disease.pdf
  • Once I get an analysis of these leaves I will post the information.
  • Black Oystercatcher eating Blue Mussels is a video I took on May 28, 2019 in the Tee Harbor area in Juneau, Alaska.
  • It was feeding in the same location as these mussels have been tested for PSP. The results so far are:
  • Date Collected   Location              Sample Site         PSP Result (µg/100g)

    5/3/2019             Juneau  Tee Harbor Bay  Blue Mussel        12

    5/22/2019           Juneau  Tee Harbor Bay  Blue Mussel        73

    6/5/2019             Juneau  Tee Harbor Bay  Blue Mussel        753

     

    Note that the FDA threshold is at 80ug/100g tissue. This information was provided to me by John Harley Postdoctoral Researcher; Alaska Coastal Rainforest Center; University of Alaska Southeast

  • I suspect on the day the oystercatcher was feeding on these mussels the PSP content was above the FDA threshold. This is also the time of year when some may be feeding their kids. 

  • It would be a good idea to monitor some of the Black Oystercatcher nests in the Juneau area. Especially when they are feeding their kids. And also sample mussels for PSP in the areas the oystercatchers are nesting.

  • Crows dropping Mussels shows Northwestern Crows feeding on Blue Mussels in the Tee Harbor area.
  • The mussels in the area where they are feeding has been tested for PSP.
  • The results show: 
  • The results so far are:
  • Date Collected   Location              Sample Site         PSP Result (µg/100g)

    5/3/2019             Juneau  Tee Harbor Bay  Blue Mussel        12

    5/22/2019           Juneau  Tee Harbor Bay  Blue Mussel        73

    6/5/2019             Juneau  Tee Harbor Bay  Blue Mussel        753

     

    Note that the FDA threshold is at 80ug/100g tissue. This information was provided to me by John Harley Postdoctoral Researcher; Alaska Coastal Rainforest Center; University of Alaska Southeast

  • Crab Spiders Nest and Young shows a nest where the young have just emerged and a couple of the youngsters.
  • According to Predator Upon a Flower: Life History and Fitness in a Crab Spider by Douglass H Morse the female crab spiders typically make their nest in a leaf that they have folded over.
  • In the first part of this video you can see a thimbleberry leaf folded over and next what the nest looked like.
  • Nearby there were a couple of tiny crab spiders hunting. These spiders were only about 1 mm wide and probably had recently hatched.
  • One of them hunting on a thimbleberry flower caught a black fly.
  • Their emergence occurred at a perfect time as lots of tiny no-see-ums and black flies were emerging at the same time.
  • Both of these insects really seek blood from us so ............................................
  • Learning How to Hunt shows a newly hatched crab spider trying and eventually capturing a small fly.
  • At hatching these spiders are a little less than 1 millimeter wide and they must learn themselves how to capture insects.
  • This event happened on June 24, 2019 in Juneau, Alaska. 
  • At this time numerous tiny no-see-ums and black flies were emerging. A perfect size for the also tiny spider.

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