Fry stockings of walleye Stizostedion v. vitreum into the Cedar River, Iowa began in the early 1950's, and two studies of the success of these plants gave conflicting results. The objectives of my study were to identify some genetic characteristics in three stocks of walleye and to utilize these characteristics to assess the genetic impact of fry stockings in the Cedar River. Electrophoretic analysis of malate dehydrogenase (MDH) and isocitrate dehydrogenase (IDH) was completed for walleye stocks from the Mississippi and Cedar Rivers, and Big Spirit Lake, Iowa. Phenotypic frequencies of Mdh - B2 and Mdh - B3 were as follows: Mississippi River walleye, 83 and 17%, respectively; Cedar River walleye, 71 and 29%, respectively; and Spirit Lake walleye, 19 and 81%, respectively. Chi-Square testing of these frequencies demonstrated that Spirit Lake fish differed significantly from Mississippi (P
Chi-square testing indicated that these frequencies were similar (P>0.05). My study indicated that there are some genetic differences between walleye stocks in the two Iowa rivers and Big Spirit Lake. It is probable that the native Cedar River and Mississippi River stocks are genetically similar, particularly since the former is a tributary to the latter. Also, fry stockings of Big Spirit Lake walleye, and their progeny, have contributed only about 19% to the Cedar River population. Fry stockings are less successful than was once thought, and a more refined stocking program is needed.
Watch porn eva elfie - big boobs; doggystyle; vaginal fucked; big ass; stockings; [porno; original], online sex video in hight quality. You can also download this video for free without registration. If you liked the video, then press the thumbs up and share the video link to your friends. 781b155fdc