Guest Blog Post: Field Biologist Jeremy Tiemann

We are excited to have a guest blogger this week! Field Biologist Jeremy Tiemann and his colleague, M.H. Sabaj-Perez, recently headed down to Brazil for research on the Xingu River and were awesome enough to share their experience with us! 

U.S. and Brazilian biologists are collaborating on an inventory of the fishes, mollusks, and crustaceans of the Xingu River, a large tributary of the Amazon River, in the state of Para, Brazil.  With funding from the National Science Foundation, we joined other researchers from the U.S. and Brazil and sampled the lower Xingu near Altamira during the month of November 2014.  This was the third expedition to the region. This stretch of river includes the area that will be affected by the construction of the Belo Monte Dam complex.  During this time of year water levels are at their lowest point and many species of fishes become crowded together making them easier to collect.  The goal of the project was to document the diversity of aquatic life and habitats in the various stretches of the lower Xingu prior to its modification by the dam complex.

Members of the U.S. Expedition team holding the Brazilian Flag Hoo at the downstream most waterfall on the rio Xingu, Brazil.

Members of the U.S. Expedition team holding the Brazilian Flag Hoo at the downstream most waterfall on the rio Xingu, Brazil.

The rio Xingu is home to an estimated 450 species of fishes and an unknown number of mollusks (mussels and snails) and crustaceans (crabs and shrimps).  Sampling consisted of traditional fisheries techniques, and included cast netting, dip netting, seining, gill netting, trotlines, trawling, and hand-picking. Trawling was an effective way to not only collect fishes, but also mussels, sponges, and crabs.

Researchers pulling up a trawl (photo by M.H. Sabaj-Perez).

Researchers pulling up a trawl. Photo by M.H. Sabaj-Perez

 The expedition consisted of three separate outings, and traveling during each outing was either by boats or a combination of trucks and boats.  The first outing was from Altamira upstream to the mouth of the rio Iriri (5 days), the second outing was from Altamira downstream to cachoeira do Jericoá, in the heart of Volta Grande (5 days), and the third was at Porto de Moz at the Xingu mouth upstream to the lower-most rapids of Volta Grande.  During each outing, two base camps were made from which small groups ventured out to sample.  There was one day (2 nights) in Altamira between outings 1 & 2 and 2 & 3 to rest, restock, and change personnel.  Each of the outings consisted of 14 scientists who were assisted by 8 local fishermen, boatmen, and cooks.

The expedition netted and preserved about 17,000 specimens of fishes, 4,000 specimens of mollusks, and 100 specimens of crustaceans from nearly 100 sites.  These specimens will help document the diversity of aquatic life in the rio Xingu.  Fishes collected varied in shape, size, and color from a two-inch Amazon Puffer (Colomesus asellus) to a 4+ foot Redtail Catfish (Phractocephalus hemioliopterus).  Below are a few of the fishes collected.

Zebra Pleco (Hypancistrus zebra), a species of armored catfish found only in the rio Xingu basin, Brazil. Photo by M.H. Sabaj-Pérez

Zebra Pleco (Hypancistrus zebra), a species of armored catfish found only in the rio Xingu basin, Brazil. Photo by M.H. Sabaj-Pérez

Xingu River Ray (Potamotrygon leopoldi Xingu River Ray (Potamotrygon leopoldi), an endemic stingray restricted to the Xingu River basin, Brazil. Photo by M.H. Sabaj-Perez

Xingu River Ray (Potamotrygon leopoldi), an endemic stingray restricted to the Xingu River basin, Brazil. Photo by M.H. Sabaj-Perez

Golden Nugget Place (Baryancistrus xanthellus), another armored catfish endemic to the Xingu River basin, Brazil. Photo by M.H. Sabaj-Perez

Golden Nugget Place (Baryancistrus xanthellus), another armored catfish endemic to the Xingu River basin, Brazil. Photo by M.H. Sabaj-Perez

Being near the equator and working over water, the Hoo-Rags were extremely useful in protecting my face, neck, and ears from the intense sun during our project.  The Brazilian Hoo-Rag also doubled nicely as the flag during our team photos.

Field Biologist Jeremy Tiemann rockin' the rag on the back of the Xingu River in Brazil.

Field Biologist Jeremy Tiemann rockin’ the rag on the back of the Xingu River in Brazil.

Rad Holiday Gift Guide from FishTrack

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2014 Holiday Gift Guide from www.FishTrack.com

FishTrack just released their 2014 Holiday Gift Guide and it is every deep sea angler’s dream wishlist! The Guide includes 10 gift ideas perfect for that picky fishermen or boater on your shopping list this year. From the YETI Hopper Cooler Bag to the Nightspotter Handheld Thermal Imaging Scope to yours truly – Hoo-rags, you can’t go wrong with any of these top notch products. We just printed and sent it directly to Santa – hope we’re on the nice list this year!

Click here to check out the entire Fishtrack Holiday Gift Guide.

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Meet our Newest Hooligans!

We’ve just added a few rad Hooligans to our pro-staff team and we wanted to introduce you to them! You’ll be seeing them around our site 🙂

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Joshua James Diller

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Kayla Nevius

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REBELMANN

Pumped to have them all part of the Hoo Team!

 

If you’re interested in applying for our Hooligan Team – please send an email to social@hoorag.com with why YOU are a Hooligan!

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