. Bulletin - Southern California Academy of Sciences. Science. SOUTHERN CALIFORNIA ACADEMY OF SCIENCES. m â CD *- o 0) *- a 0) *- CO 3 'E .2 3 c .s 3 C .2 â o <D < <D < 0) â3 T3 0) E 2 -J E E 3 -3 E a> 0) 26 cm total length. in Malibu Creek in June 2006. During the July 18-19 2006 survey, we observed 37 trout with yellow coloration, all under 15 cm, as well as another 145 trout with normal coloration in all size classes. This corresponded to the start date of a 12-day high temperature episode (described below). In August 2006, the number of trout observed exhibiting normal color
. Bulletin - Southern California Academy of Sciences. Science. SOUTHERN CALIFORNIA ACADEMY OF SCIENCES. m â CD *- o 0) *- a 0) *- CO 3 'E .2 3 c .s 3 C .2 â o <D < <D < 0) â3 T3 0) E 2 -J E E 3 -3 E a> 0) 26 cm total length. in Malibu Creek in June 2006. During the July 18-19 2006 survey, we observed 37 trout with yellow coloration, all under 15 cm, as well as another 145 trout with normal coloration in all size classes. This corresponded to the start date of a 12-day high temperature episode (described below). In August 2006, the number of trout observed exhibiting normal coloration was 36, and the yellow trout of all size classes increased to 75. Dead and dying crayfish were noted throughout the study area and a 75 cm carp that appeared ill was caught by hand. In September 2006 few fish of any species were observed. A total of nine trout were observed, of which seven exhibited the yellow coloration. After collecting three trout for pathology and histological testing in September, only two normal trout were observed in October (Figure 3). From November 2006 until March 2007, no trout and only a few carp were seen (Figure 4). The lagoon was open when the berm was breached for much of this time, allowing both in and out migration. In April 2007, 11 trout between 35-65 cm were observed, still retaining the steel gray color indicating recent movement from the ocean. In June 2007, we counted a total of 32 trout, including eight young of the year, indicating that some spawning had occurred. Unfortunately, the rebound of exotic fishes and crayfish populations were explosive, with crayfish literally covering the bottom in some pools. Due to funding constraints, surveys were suspended until September 2007, when a total of 30 trout were recorded. Of these 30. 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
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