Lateral view of a Male Baetis (Baetidae) (Blue-Winged Olive) Mayfly Dun from Mystery Creek #43 in New York

Blue-winged Olives
Baetis

Tiny Baetis mayflies are perhaps the most commonly encountered and imitated by anglers on all American trout streams due to their great abundance, widespread distribution, and trout-friendly emergence habits.

Here Oksrukuyik Creek flows away from the Dalton Highway toward the pipeline. It eventually grows into one of the major rivers of the North Slope, and the main drainage to the west of the Sag, but where it crosses the road it's just a small grayling stream.

From Oksrukuyik Creek in Alaska

Stream photos

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Zapada cinctipes (Tiny Winter Black) Stonefly Nymph Zapada cinctipes (Tiny Winter Black) Stonefly Nymph

Dorsal view of a Zapada cinctipes (Nemouridae) (Tiny Winter Black) Stonefly Nymph from the Yakima River in Washington

Nymphs of this species were fairly common in late-winter kick net samples from the upper Yakima River. Although I could not find a key to species of Zapada nymphs, a revision of the Nemouridae family by Baumann (1975) includes the following helpful sentence: "2 cervical gills on each side of midline, 1 arising inside and 1 outside of lateral cervical sclerites, usually single and elongate, sometimes constricted but with 3 or 4 branches arising beyond gill base in Zapada cinctipes." This specimen clearly has the branches and is within the range of that species.

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27" brown trout, my largest ever. It was the sub-dominant fish in its pool. After this, I hooked the bigger one, but I couldn't land it.

Troutnut is a project started in 2003 by salmonid ecologist Jason "Troutnut" Neuswanger to help anglers and fly tyers unabashedly embrace the entomological side of the sport. Learn more about Troutnut or support the project for an enhanced experience here.

spread? of Didymo in New Zealand & worldwide

Konchu

Site Editor
Indiana

Posts: 498

Konchu on May 9, 2014May 9th, 2014, 10:06 am EDT

Interesting article about Didymo in New Zealand & elsewhere

http://www.nzherald.co.nz/jamie-morton/news/article.cfm?a_id=729&objectid=11252518

Falsifly

Hayward, WI.

Posts: 660

Falsifly on May 9, 2014May 9th, 2014, 12:38 pm EDT

Ah! The dreaded, “climate change and other human-caused environmental changes” and the “ever-increasing international travel” will be the fall of us all. To think that life has evolved and adapted for eons only to finally succumb to global destruction at the hands of mankind leaves me saddened that my short visit was, in the greater scheme of things, part of its demise.

The so-called "rock snot" has not yet been found in North Island rivers and under strict biosecurity rules, people are legally obliged to prevent spreading it.

However, in the case of New Zealand my legal obligation to “strict biosecurity rules” has been met and I claim complete immunity.

The paper's lead author, Professor Brad Taylor, said didymo blooms were hastily attributed to human introductions or the emergence of new genetic strain because the absence of evidence was used as evidence of absence in many locations.

As to the question of “spread?”. It wasn’t me, I will use the “absence of evidence” that I ever stepped foot in New Zealand as my “evidence of absence”.

Falsifly
When asked what I just caught that monster on I showed him. He put on his magnifiers and said, "I can't believe they can see that."