. Bulletin. Science; Natural history; Natural history. 108 SOUTHERN CALIFORNIA ACADEMY OF SCIENCES. Fig. 4. Pupfish habitat in irrigation drain, King Street canal, Riverside County, California (3 March 1977). spring-fed stretch that runs into a one-half acre pond (Fig. 5). This pond is not natural. It was enlarged by the National Park Service about 1965. Water is now impounded by an earthen dam. According to Turner (1982) the genetic distance between the Quitobaquito and Salton Sea fish is Morphologically, these two populations differ as well. Among other things, coloration of Quitobaqu
. Bulletin. Science; Natural history; Natural history. 108 SOUTHERN CALIFORNIA ACADEMY OF SCIENCES. Fig. 4. Pupfish habitat in irrigation drain, King Street canal, Riverside County, California (3 March 1977). spring-fed stretch that runs into a one-half acre pond (Fig. 5). This pond is not natural. It was enlarged by the National Park Service about 1965. Water is now impounded by an earthen dam. According to Turner (1982) the genetic distance between the Quitobaquito and Salton Sea fish is Morphologically, these two populations differ as well. Among other things, coloration of Quitobaquito males is less intense. They are paler blue, and the yellow of the tail is pale. Pelvic fins are smaller, and the dorsal fin is more posterior. Males have a longer, wider, and deeper head, and the body is broader and deeper (Miller 1943; Minckley 1973; Miller and Fuiman 1987). In Rio Sonoyta, near Sonoyta, Sonora, Mexico there are pupfish that are similar to, but not the same as those in Quitobaquito Spring. They are intermediate in shape between the Quitobaquito fish and those from Santa Clara Slough (Miller and Fuiman 1987). It appears that they are different enough to be described as a distinct subspecies (McMahon and Miller 1982). It is possible, however, that the fish occurring in Rio Sonoyta today are not exactly the same as those that occurred there formerly (Minckley pers. comm.). It may be that fish occurring there today were influenced by hybridization from fish transplanted from nearby Quitobaquito Spring. Apparently Quitobaquito fish have been transplanted to various points throughout Arizona; some of them in localities far outside their native range (Minckley pers. comm.). The Monkey Spring pupfish has been determined to be a separate species, but. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original wor
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