. Brimleyana. Zoology; Ecology; Natural history. Cottus Life History in Delaware 75. SONDJ FMAMJ JASONDJ FMAMJ JA 1973 1974 1975 197B 1979 1980 MON THS Fig. 2. Relationship between gonad weight and body weight in male and female Cottus bairdi from Butler Mill Branch, Sussex County, Delaware, October 1973- March 1975 (solid lines) and September 1978-August 1980 (broken lines). dropped markedly in March 1974, at spawning, was low through summer, and increased again in November. The maximum value was reached early in March 1975, and was followed rapidly in mid-March by another sharp post-spawning
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. Brimleyana. Zoology; Ecology; Natural history. Cottus Life History in Delaware 75. SONDJ FMAMJ JASONDJ FMAMJ JA 1973 1974 1975 197B 1979 1980 MON THS Fig. 2. Relationship between gonad weight and body weight in male and female Cottus bairdi from Butler Mill Branch, Sussex County, Delaware, October 1973- March 1975 (solid lines) and September 1978-August 1980 (broken lines). dropped markedly in March 1974, at spawning, was low through summer, and increased again in November. The maximum value was reached early in March 1975, and was followed rapidly in mid-March by another sharp post-spawning decrease. The gonosomatic ratio pattern for males was similar to that for females, but monthly differences were not as pronounced (Fig. 2, Table 1). Maximum development in 1974 was in January, followed by a summer decline and a fall increase, and values. 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 work.. North Carolina State Museum of Natural History. [Raleigh, NC : North Carolina State Museum of Natural History]