Alabama sturgeon

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Alabama sturgeon
Alabama Sturgeon.jpg
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Actinopterygii
Order: Acipenseriformes
Family: Acipenseridae
Genus: Scaphirhynchus
Species: S. suttkusi
Binomial name
Scaphirhynchus suttkusi
(J. D. Williams & Clemmer, 1991)
Alabama sturgeon

The Alabama sturgeon, Scaphirhynchus suttkusi, is a critically endangered species of sturgeon native to the United States of America and now only believed to exist in 130 miles (210 km) of the lower Alabama River.[2] The fish has a distinctive yellowish-orange color, grows to a size of about 30 in (76 cm) long and 2 to 3 lb (0.9–1.4 kg), and is believed to have a lifespan of 12 to 20 years. Biologists have known of the fish since the 1950s or 1960s, but the large diversity of aquatic species in Alabama prevented formal identification until 1991.

Protected status controversy[edit]

The Alabama sturgeon was first proposed for protected status in the early 1990s, although by then the fish was already so rare its survival was uncertain. The sturgeon's protection was opposed by a variety of industries located along Alabama's rivers for the feared economic impact. The opponents' main arguments were that it was already extinct or that it was not a distinct species. In response to this opposition, the U.S. Fish and Wildlife Service ceased efforts to place the fish on the Endangered Species List. Then Ray Vaughan, an environmental lawyer in Montgomery, Alabama, sued the Service and, in 2000, won, requiring Fish and Wildlife to list the fish for protection.[2]

Recent efforts[edit]

In 1993, state and federal biologists began a program to help save the Alabama sturgeon through a captive breeding program. Unfortunately, only six fish have been captured since then, all male. The last fish held in captivity died in 2002. The most recent specimen was captured in April 2007. After determining the fish was a male, sperm were collected, a small tracking device implanted, and it was released once it had fully healed.[3] [4] It was hoped that the tagged fish would lead to others of its species, but in a year of tracking to date, this has not happened.[5]

In May 2008, the Fish and Wildlife Service proposed designating 245 miles (394 km) of the Alabama River and 81 miles (130 km) of the lower portion of its tributary, the Cahaba River, as critical habitat for the fish. Although the rivers are dammed at multiple locations, management of the river flows is expected to continue unchanged. In July 2009, fish researchers lost contact with the only known live Alabama Sturgeon. The fish had been given an electronic tracking device in hopes that the fish would lead them to other members of the species, but the device stopped working.

In August 2013, the Fish and Wildlife Service released the "Recovery Plan for the Alabama Sturgeon (Scaphirhynchus suttkusi)".[6] It includes a plan to establish a captive stock that can produce fingerlings to be released back into the wild and to improve the habitat in the Alabama River through operational changes at Claiborne and Millers Ferry Lock and Dams.[7]

References[edit]

  1. ^ Parauka, F.M. (U.S. Fish & Wildlife Service) (2004). "Scaphyrhynchus suttkusi". IUCN Red List of Threatened Species. Version 2013.2. International Union for Conservation of Nature. Retrieved 20 January 2014. 
  2. ^ a b Bouma, Katherine (2007-04-05). "Alabama sturgeon caught in Wilcox, raises hopes for possible breeding". The Birmingham News. Archived from the original on 27 Sep 2007. Retrieved 2007-04-06. 
  3. ^ Bouma, Katherine (2007-04-06). "Alabama sturgeon a male, to be freed carrying tracker". The Birmingham News. Archived from the original on 30 Sep 2007. Retrieved 2007-04-06. 
  4. ^ Bouma, Katherine (2007-04-18). "Biologists hope tagged sturgeon will lead to others". The Birmingham News. Archived from the original on 30 Sep 2007. Retrieved 2007-04-06. 
  5. ^ Reilly, Sean (2008-05-27). "'Critical habitat' set for sturgeon". (Mobile, Alabama) Press-Register. Archived from the original on 2012-09-27. Retrieved 2014-01-20. 
  6. ^ "Agency makes plans to save Alabama sturgeon". Montgomery Advertiser. 2007-08-07. Archived from the original on 2013-08-14. Retrieved 2014-01-20. 
  7. ^ "Alabama Sturgeon Recovery Plan Released". WTVY.com. 2013-08-06. Retrieved 2013-08-14. 

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