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Adult TEWS-01-1994 Yes <br />Adult TRAN-01-2001 Yes Yes <br />Adult TRAN-01-2004 Yes Yes Yes <br />Gametes DILA-01-2001 <br />Juvenile BAIL-01-1954 Yes <br />Juvenile DEHA-01-2008 Yes <br />Juvenile KUHA-01-2007 Yes Yes <br />Juvenile ML7RP-01-2007 Yes <br />Juvenile MURP-02-2007 <br />Juvenile SEI-01-2005 Yes Yes Yes <br />Juvenile SILL-01-2005 <br />Larvae SNYD-01-1994 Yes <br />Larvae SNYD-01-2002 <br />Non-s ecific BIRS-01-2002 <br />Non-s ecific CROS-01-1967 Yes <br />Non-s ecific GENE-01-1994 Yes <br />Non-s ecific KEEN-01-1995 Yes <br />Non-s ecific KEEN-01-1996 Yes <br />Non-s ecific KEEN-02-1994 Yes Yes Yes Yes <br />Non-s ecific MCQU-01-2000 <br />In addition, the occurrence of hybrid individuals in the population not only compounds <br />the difficulty of distinguishing between the species, but it may indicate the existence of other <br />problems for the pallid sturgeon. Several authors have pointed out that the presence of hybrid <br />individuals may be the results of habitat modifications in the Mississippi River and Missouri <br />River which have interrupted spawning migrations and altered temperature regimes and flood <br />pulses needed as reproductive cues by these fish (Keenlyne 1989; Keenlyne 1995; Keenlyne <br />1996; Mayden and Kuhajda 1997). <br />Relationship of PRRIP hypotheses to Taxonomy and Identification: