Sneaking behaviour in the dusky frillgoby Bathygobius fuscus

Want to know more about the sneaking behaviour in the dusky frillgoby Bathygobius fuscus? You are in luck:

Large- and small-size advantages in sneaking behaviour in the dusky frillgoby Bathygobius fuscus,” Takeshi Takegaki, Takashi Kaneko and Yukio Matsumoto, Naturwissenschaften, Volume 99, Number 4, 285-289.

“Sneaking tactic, a male alternative reproductive tactic involving sperm competition, is generally adopted by small individuals because of its inconspicuousness. However, large size has an advantage when competition occurs between sneakers for fertilization of eggs. Here, we suggest that both large- and small-size advantages of sneaker males are present within the same species. Large sneaker males of the dusky frillgoby Bathygobius fuscus showed a high success rate in intruding into spawning nests because of their advantage in competition among sneaker males in keeping a suitable position to sneak, whereas small sneakers had few chances to sneak. However, small sneaker males were able to stay in the nests longer than large sneaker males when they succeeded in sneak intrusion.”

(Thanks to investigator Tom Gill for bringing this to our attention.)

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