North American Sturgeon Otolith Morphology

Accurate expedient species identification of deceased sturgeon (Acipenseridae) when external physical characteristic analysis is inconclusive has become a high priority due to the endangered or threatened status of sturgeon species around the world. Examination of otoliths has provided useful information to aid in population management, age and size-class analysis, understanding predator–prey interactions, and archeological research in other fish species. The relationship between otolith characteristics and sturgeon species has remained unknown. Therefore, we analyzed the shape of otoliths from the eight species of sturgeon found in North America to test the utility of otolith characteristic morphology in species identification. There were distinct differences in the size and shape of the otoliths between species of sturgeon with little shape variation among individuals of the same species. The relationship between otolith length axes was linear, and most of the variability was explained by a Log (axis + 1) transformation of the x and y axes (r2 = 0.8983) using the equation y = 0.73x + 0.0612. Images of otoliths from all eight North American species are presented to assist in the identification process.

[1]  R. Fay,et al.  Frequency tuning and intensity coding of sound in the auditory periphery of the lake sturgeon, Acipenser fulvescens , 2010, Journal of Experimental Biology.

[2]  E. Hilton,et al.  Atlantic sturgeon research techniques , 2010 .

[3]  Sandra J. Sutherland,et al.  Brodeur's guide to otoliths of some northwest Atlantic fishes , 2010 .

[4]  Karin E. Limburg,et al.  Dramatic Declines in North Atlantic Diadromous Fishes , 2009 .

[5]  S. Campana,et al.  Lake Sturgeon Age Validation using Bomb Radiocarbon and Known-Age Fish , 2009 .

[6]  N. Auer.  Anadromous sturgeons—what’s in a name? , 2008, Environmental Biology of Fishes.

[7]  J. Jackson.  Earliest References to Age Determination of Fishes and Their Early Application to the Study of Fisheries , 2007 .

[8]  A. Ludwig,et al.  Age and biogeography of major clades in sturgeons and paddlefishes (Pisces: Acipenseriformes). , 2007, Molecular phylogenetics and evolution.

[9]  Peter B. Adams,et al.  Population Status of North American Green Sturgeon, Acipenser medirostris , 2007, Environmental Biology of Fishes.

[10]  D. Peterson,et al.  Morphology and ecology of Pacific sturgeons , 2007, Environmental Biology of Fishes.

[11]  C. Jennings,et al.  Ecology and biology of the lake sturgeon: a synthesis of current knowledge of a threatened North American Acipenseridae , 2007, Reviews in Fish Biology and Fisheries.

[12]  E. Artyukhin.  Morphological Phylogeny of the Order Acipenseriformes , 2006 .

[13]  P. Wright,et al.  Combined methods of otolith shape analysis improve identification of spawning areas of Atlantic cod , 2006 .

[14]  E. K. Pikitch,et al.  Status, trends and management of sturgeon and paddlefish fisheries , 2005 .

[15]  G. Lecointre,et al.  Biology and conservation of sturgeon and paddlefish , 2000, Reviews in Fish Biology and Fisheries.

[16]  E. Findeis.  Osteology and phylogenetic interrelationships of sturgeons (Acipenseridae) , 1997, Environmental Biology of Fishes.

[17]  B. Kynard,et al.  Sturgeon rivers: an introduction to acipenseriform biogeography and life history , 1997, Environmental Biology of Fishes.

[18]  J. Waldman,et al.  The threatened status of acipenseriform species: a summary , 1997, Environmental Biology of Fishes.

[19]  L. Grande,et al.  An overview of Acipenseriformes , 1997, Environmental Biology of Fishes.

[20]  B. Kynard.  Life history, latitudinal patterns, and status of the shortnose sturgeon, Acipenser brevirostrum , 1997, Environmental Biology of Fishes.

[21]  K. D. Keenlyne.  Life history and status of the shovelnose sturgeon, Scaphirhynchus platorynchus , 1997, Environmental Biology of Fishes.

[22]  D. Peterson,et al.  Sturgeon Ecomorphology: A Descriptive Approach , 2004 .

[23]  K. Sulak,et al.  Understanding sturgeon life history: Enigmas, myths, and insights from scientific studies , 2002 .

[24]  N. Miyazaki,et al.  Microstructural growth in otoliths of the Russian sturgeon, Acipenser gueldenstaedtii , 2002 .

[25]  James H. Johnson,et al.  Little Galloo Island, Lake Ontario: A Review of Nine Years of Double-crested Cormorant Diet and Fish Consumption Information , 2002 .

[26]  D. Secor,et al.  AGE DETERMINATION AND GROWTH OF HUDSON RIVER ATLANTIC STURGEON, ACIPENSER OXYRINCHUS , 2000 .

[27]  J. Harvey,et al.  Relationship between Fish Size and Otolith Length for 63 Species of Fishes from the Eastern North Pacific Ocean , 2000 .

[28]  K. Sulak,et al.  Recent advances in life history of Gulf of Mexico sturgeon, Acipenser oxyrinchus desotoi, in the Suwannee river, Florida, USA: a synopsis , 1999 .

[29]  E. Vasil'eva.  Some morphological characteristics of Acipenserid fishes: considerations of their variability and utility in taxonomy , 1999 .

[30]  G. Jones,et al.  Distribution of otoliths in surficial sediments of the U.S. Atlantic Continental Shelf and slope and potential for reconstructing Holocene fish stocks , 1996 .

[31]  T. Hecht,et al.  Otolith atlas of southern African marine fishes , 1996 .

[32]  D. Nolf.  A survey of perciform otoliths and their interest for phylogenetic analysis, with an iconographic synopsis of the percoidei , 1993 .

[33]  Tim E. Holzkamm,et al.  Potential Fishery for Lake Sturgeon (Acipenser fulvescens) as Indicated by the Returns of the Hudson's Bay Company Lac la Pluie District , 1988 .

[34]  T. Hecht.  A guide to the otoliths of southern ocean fishes , 1987 .

[35]  B. Mate,et al.  Abundance, movements, and feeding habits of harbor seals, Phoca vitulina, at Netarts and Tillamook Bays, Oregon , 1983 .

[36]  S. Messieh.  Use of Otoliths in Identifying Herring Stocks in the Southern Gulf of St. Lawrence and Adjacent Waters , 1972 .

[37]  John E. Fitch,et al.  Fish Otoliths in Cetacean Stomachs and Their Importance in Interpreting Feeding Habits , 1968 .

[38]  D. Carlström.  A CRYSTALLOGRAPHIC STUDY OF VERTEBRATE OTOLITHS , 1963 .