How can changing the sex ratios of fish hurt the population of that species?



  1. emc
    0 Votes

    Let’s say the female fish population were allowed to grow to twice its normal size, while the male population stayed roughly the same.  The initial goal of letting the female population grow would be to spike the population quickly by producing more offspring.  However, there are complications.  With twice the number of females as before and the same number of males, there would be an environmental stress on food.  Fish of both sexes would have to move into new territory to find enough to survive, but then there would also be the added danger of new predators, disease, and the possibility of males being too dispersed to mate with females.  The population could be crushed if such events took place.  If their original habitat were able to support the population example given, the boom in birth rate would surely cause a disruption on the food supply.

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