Life Cycles…
The Mohave tui chub are very prolific. Chub a year and older, can “spring” into reproductive action as early as March if the water warms to above 64°F (18°C). Spawning happens in mass over vegetation. Female chub release their spawn (4,000-50,000 eggs) over water plants as males release their milt (sperm) into the water nearby. As randomly fertilized eggs become “sticky” they attach to the water plants below. Eggs are about the size of this period →. (0.1-0.4 mm), and hatch after 6-8 days at 64°- 68°F. Newly hatched chub (prolarvae) spend their first hours on the bottom before swimming to the surface. After a couple of days, young chub group themselves into “schools” thereafter. Historically, from observations as recent as the early 1930’s and 40’s, chub were frequently seen traveling in large schools along the Mojave River and its tributaries where water perennially flows above ground. Chub larger than 3 inches tend to be solitary, striking out on their own.
The Mohave tui chub are very prolific. Chub a year and older, can “spring” into reproductive action as early as March if the water warms to above 64°F (18°C). Spawning happens in mass over vegetation. Female chub release their spawn (4,000-50,000 eggs) over water plants as males release their milt (sperm) into the water nearby. As randomly fertilized eggs become “sticky” they attach to the water plants below. Eggs are about the size of this period →. (0.1-0.4 mm), and hatch after 6-8 days at 64°- 68°F. Newly hatched chub (prolarvae) spend their first hours on the bottom before swimming to the surface. After a couple of days, young chub group themselves into “schools” thereafter. Historically, from observations as recent as the early 1930’s and 40’s, chub were frequently seen traveling in large schools along the Mojave River and its tributaries where water perennially flows above ground. Chub larger than 3 inches tend to be solitary, striking out on their own.
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