BLM REA CYR 2013 Inconnu Anadromous Habitat

Metadata Updated: November 12, 2020

This dataset provides the current (2015) general habitat of anadromous inconnu documented in the Anadromous Waters Catalog (AWC). Inconnu overwinter predominantly in near-shore coastal waters, estuaries, and low gradient rivers. In the CYR study area, inconnu feed at the mouths of major tributaries along the Yukon River during summer months. Inconnu annually make long migrations between overwintering habitat and feeding habitat. Therefore, inconnu likely migrate into and out of the CYR study area seasonally, as the study area does not include coastal waters or estuaries. Juvenile inconnu feed on aquatic invertebrates and other small prey while adults feed predominantly on other fish. Inconnu mature at 6 to 9 years old for males and 7 to 12 years old for females. Once mature, inconnu spawn multiple times throughout their lifetimes with high spawning site fidelity. Because of the energy required for spawning, inconnu often do not spawn every year once mature, although annual spawning does occur. Spawning coincides with the time at which the temperature of water approaches 0 °C. In the main stem of the Yukon River, inconnu spawn from mid- to late October and in other spawning areas from late September to mid-October. The age at maturity and the timing of favorable temperature conditions for spawning determine when individuals will migrate from feeding habitats to spawning habitats.

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License: No license information was provided. If this work was prepared by an officer or employee of the United States government as part of that person's official duties it is considered a U.S. Government Work.

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Metadata Date October 13, 2017
Metadata Created Date November 12, 2020
Metadata Updated Date November 12, 2020
Reference Date(s) October 6, 2016 (publication)
Frequency Of Update notPlanned

Metadata Source

Harvested from DOI Open Data

Additional Metadata

Resource Type Dataset
Metadata Date October 13, 2017
Metadata Created Date November 12, 2020
Metadata Updated Date November 12, 2020
Reference Date(s) October 6, 2016 (publication)
Responsible Party Alaska Center for Conservation Science, University of Alaska Anchorage (Point of Contact)
Contact Email
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Bbox East Long -141.002549754
Bbox North Lat 67.4090957007
Bbox South Lat 64.1565091007
Bbox West Long -162.587866438
Coupled Resource
Frequency Of Update notPlanned
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Metadata Language
Metadata Type geospatial
Progress completed
Spatial Data Service Type
Spatial Reference System
Spatial Harvester True

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