Difference between revisions of "Humpback Chub Page"

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! style="width=33%; background:#cedff2;" | [[Table- Fish Species of the CR- GLEN and Grand| Fish Species of the Colorado River in Lower Glen Canyon and Grand Canyon]]<br>(See Fish Table)
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! style="width=33%; background:#cedff2;" | [[Table- Fish Species of the CR- GLEN and Grand| Fish Species of the Colorado River in Lower Glen Canyon and Grand Canyon]]  
 
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2016
 
2016
*[[Media:2016 VanHaverbeke HBC LCR.pdf| '''Mark-Recapture and Fish Monitoring Activities in the Little Colorado River in Grand Canyon Colorado River in Grand Canyon from 2000 to 2015''']]
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*[[Media:2016 VanHaverbeke HBC LCR.pdf| Mark-Recapture and Fish Monitoring Activities in the Little Colorado River in Grand Canyon Colorado River in Grand Canyon from 2000 to 2015]]
*[http://fwspubs.org/doi/pdf/10.3996/102015-JFWM-101 '''Effects of Turbidity on Predation Vulnerability of Juvenile Humpback Chub to Rainbow and Brown Trout''']
+
*[http://fwspubs.org/doi/pdf/10.3996/102015-JFWM-101| Effects of Turbidity on Predation Vulnerability of Juvenile Humpback Chub to Rainbow and Brown Trout]
*[http://www.usbr.gov/uc/rm/amp/twg/mtgs/16jan26/documents/Attach_01.pdf ''' Recovery Plan update for Humpback Chub''']
+
*[http://www.usbr.gov/uc/rm/amp/twg/mtgs/16jan26/documents/Attach_01.pdf| Recovery Plan update for Humpback Chub]
*[http://www.usbr.gov/uc/rm/amp/twg/mtgs/16jan26/documents/AR17_VanHaverbeke.pdf ''' Humpback chub in the Little Colorado River, Monitoring of Juveniles, Sub-Adults, and Adults and Translocations''']
+
*[http://www.usbr.gov/uc/rm/amp/twg/mtgs/16jan26/documents/AR17_VanHaverbeke.pdf| Humpback chub in the Little Colorado River, Monitoring of Juveniles, Sub-Adults, and Adults and Translocations]
*[http://www.usbr.gov/uc/rm/amp/twg/mtgs/16jan26/documents/AR18_Omana%20Smith.pdf ''' Humpback Chub Translocations to Havasu and Shinumo Creeks, Grand Canyon National Park''']
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*[http://www.usbr.gov/uc/rm/amp/twg/mtgs/16jan26/documents/AR18_Omana%20Smith.pdf| Humpback Chub Translocations to Havasu and Shinumo Creeks, Grand Canyon National Park]
*[http://www.usbr.gov/uc/rm/amp/twg/mtgs/16jan26/documents/AR19_Yackulic.pdf ''' Humpback chub (Gila cypha) that Spawn in the Little Colorado River: Status and Potential Drivers''']
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*[http://www.usbr.gov/uc/rm/amp/twg/mtgs/16jan26/documents/AR19_Yackulic.pdf| Humpback chub (Gila cypha) that Spawn in the Little Colorado River: Status and Potential Drivers]
*[http://www.usbr.gov/uc/rm/amp/twg/mtgs/16jan26/documents/AR20_Ward.pdf ''' Factors that Influence Juvenile Humpback Chub Survival ''']
+
*[http://www.usbr.gov/uc/rm/amp/twg/mtgs/16jan26/documents/AR20_Ward.pdf| Factors that Influence Juvenile Humpback Chub Survival]
*[http://www.usbr.gov/uc/rm/amp/twg/mtgs/16jan26/documents/AR24_Brizendine.pdf ''' Use of Ultrasonic Imaging to Evaluate Egg Maturation of Humpback Chub (Gila cypha) in Grand Canyon ''']
+
*[http://www.usbr.gov/uc/rm/amp/twg/mtgs/16jan26/documents/AR24_Brizendine.pdf| Use of Ultrasonic Imaging to Evaluate Egg Maturation of Humpback Chub (Gila cypha) in Grand Canyon]
*[http://www.usbr.gov/uc/rm/amp/twg/mtgs/16jan26/documents/AR25_Young.pdf ''' Monitoring Humpback Chub Aggregations in the Mainstem, 1991-2015 ''']
+
*[http://www.usbr.gov/uc/rm/amp/twg/mtgs/16jan26/documents/AR25_Young.pdf| Monitoring Humpback Chub Aggregations in the Mainstem, 1991-2015]
  
 
2015
 
2015
*[https://drive.google.com/file/d/0BwY-Z2c3NTUGdXc2WHJOWkdBX3M/view ''' Havasu Creek Translocation Update''']
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*[https://drive.google.com/file/d/0BwY-Z2c3NTUGdXc2WHJOWkdBX3M/view| Havasu Creek Translocation Update]
*[http://www.usbr.gov/uc/rm/amp/amwg/mtgs/15feb25/Attach_05b.pdf ''' Native-nonnative Interactions; Factors Influencing Predation and Competition ''']
+
*[http://www.usbr.gov/uc/rm/amp/amwg/mtgs/15feb25/Attach_05b.pdfNative-nonnative Interactions; Factors Influencing Predation and Competition]
*[http://www.usbr.gov/uc/rm/amp/twg/mtgs/15jan20/Attach_07.pdf ''' Chute Falls Translocation Update''']
+
*[http://www.usbr.gov/uc/rm/amp/twg/mtgs/15jan20/Attach_07.pdfChute Falls Translocation Update]
*[http://www.usbr.gov/uc/rm/amp/twg/mtgs/15jan20/Attach_08.pdf ''' Humpback Chub Translocations to Shinumo and Havasu Creeks, Grand Canyon National Park''']
+
*[http://www.usbr.gov/uc/rm/amp/twg/mtgs/15jan20/Attach_08.pdfHumpback Chub Translocations to Shinumo and Havasu Creeks, Grand Canyon National Park]
*[http://www.usbr.gov/uc/rm/amp/twg/mtgs/15jan20/Attach_13.pdf '''Humpback Chub in the Colorado river: Status and Trends of Aggregations, Changes in Range''']
+
*[http://www.usbr.gov/uc/rm/amp/twg/mtgs/15jan20/Attach_13.pdf| Humpback Chub in the Colorado river: Status and Trends of Aggregations, Changes in Range]
*[http://www.usbr.gov/uc/rm/amp/twg/mtgs/15jan20/Attach_14.pdf '''Early Life History of Humpback Chub: Patterns and Potential Drivers''']
+
*[http://www.usbr.gov/uc/rm/amp/twg/mtgs/15jan20/Attach_14.pdf| Early Life History of Humpback Chub: Patterns and Potential Drivers]
*[http://www.usbr.gov/uc/rm/amp/twg/mtgs/15jan20/Attach_15.pdf ''' Biological Opinion Trigger Update: January 2015 ''']
+
*[http://www.usbr.gov/uc/rm/amp/twg/mtgs/15jan20/Attach_15.pdf| Biological Opinion Trigger Update: January 2015]
  
 
2014
 
2014
*[http://www.usbr.gov/uc/rm/amp/twg/mtgs/14oct28/Attach_11.pdf ''' 2014 Shinumo Creek Flood ''']
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*[http://www.usbr.gov/uc/rm/amp/twg/mtgs/14oct28/Attach_11.pdf| 2014 Shinumo Creek Flood]
*[http://www.usbr.gov/uc/rm/amp/twg/mtgs/14jan30/AR_Persons_Fish_monitoring.pdf ''' Colorado River fish monitoring in Grand Canyon, Arizona: 1990-2013 humpback chub, Gila cypha, aggregations ''']
+
*[http://www.usbr.gov/uc/rm/amp/twg/mtgs/14jan30/AR_Persons_Fish_monitoring.pdf| Colorado River fish monitoring in Grand Canyon, Arizona: 1990-2013 humpback chub, Gila cypha, aggregations]
*[http://www.usbr.gov/uc/rm/amp/twg/mtgs/14jan30/AR_Yackulic_Results.pdf ''' Results from Colorado River Site and ongoing population modeling ''']
+
*[http://www.usbr.gov/uc/rm/amp/twg/mtgs/14jan30/AR_Yackulic_Results.pdf| Results from Colorado River Site and ongoing population modeling]
  
 
2011
 
2011
*[http://www.usbr.gov/uc/rm/amp/amwg/mtgs/11aug24/Attach_06.pdf '''GCMRC Update - Chub, Temperature, and Sediment''']
+
*[http://www.usbr.gov/uc/rm/amp/amwg/mtgs/11aug24/Attach_06.pdf| GCMRC Update - Chub, Temperature, and Sediment]
  
 
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Revision as of 15:41, 20 June 2016


Humpback-large- PIC.jpg

HBC-Kurt- PIC.jpg

HBC distribution USFWS.jpg

Description
The humpback chub (Gila cypha) is an endangered, native fish of the Colorado River that evolved around 3-5 million years ago. The pronounced hump behind its head gives this fish a striking, unusual appearance. It has an olive-colored back, silver sides, a white belly, small eyes and a long snout that overhangs its jaw. Like the Colorado pikeminnow and bonytail, the humpback chub is a member of the minnow family.

The humpback chub is a relatively small fish by most standards – its maximum size is about 20 inches and 2.5 pounds. By minnow standards it is a big fish, though not like the giant of all minnows – the Colorado pikeminnow. Humpback chub can survive more than 30 years in the wild. It can spawn as young as 2 to 3 years of age during its March through July spawning season.

Although the humpback chub does not have the swimming speed or strength of the Colorado pikeminnow, its body is uniquely formed to help it survive in its whitewater habitat. The hump that gives this fish its name acts as a stabilizer and a hydrodynamic foil that helps it maintain position. The humpback chub uses its large fins to “glide” through slow-moving areas, feeding on insects that become trapped in water pockets.


Status and distribution
The humpback chub was listed as endangered by U.S. Fish and Wildlife Service in 1967 and given full protection under the Endangered Species Act of 1973. Historically, humpback chub inhabited the swift and turbulent waters in canyons of the Colorado River and three of its tributaries: the Green and Yampa rivers in Colorado and Utah, and the Little Colorado River in Arizona. The species was first discovered in 1946. Before that time, few people ventured into these treacherous regions – including fishery biologists.

Today, five self-sustaining populations of humpback chub occur in the Upper Colorado River Basin. Two to three thousand adults can occur in the Black Rocks and Westwater Canyon core population in the Colorado River near the Colorado/Utah border. Several hundred to more than 1,000 adults may occur in the Desolation/Gray Canyon core population in the Green River. Populations in Yampa and Cataract canyons are small, each consisting of up to a few hundred adults.

The largest known population of humpback chub is in the Lower Colorado River (LCR) Basin in the Grand Canyon -- primarily in the LCR and its confluence with the main stem of the Little Colorado River. In 2009, the U.S. Geological Survey announced that this population increased by about 50 percent from 2001 to 2008. The agency estimates that the number of adults is between 6,000 and 10,000, with the most likely number being 7,650 individuals.

--- Fish Species of the Colorado River in Lower Glen Canyon and Grand Canyon ---

Updates

Indication of skip-spawning in the 2015 LCR monitoring. Is this related to food limitation and the decline of the trout population? 2016LCRhbcAbundanceEst.jpg

Humpback chub numbers in Grand Canyon have been increasing since the early 2000s HBCpopEst ASMR2011.jpg

HBCpopEst MultiStateModel09 12.jpg

Important Science Insight of 2012 page 1.jpg


LCR remote PIT tag arrays

Little Colorado River PIT-tag arrays.jpg

INFORMATION

Presentations and Papers

2016

2015

2014

2011

Other Stuff

POTENTIAL THREATS: