Extreme aggression in male squid induced by a β-MSP-like pheromone

Scott F. Cummins, Jean G. Boal, Kendra C. Buresch, Chitraporn Kuanpradit, Prasert Sobhon, Johanna B. Holm, Bernard M. Degnan, Gregg Thomas Nagle, Roger T. Hanlon

Research output: Contribution to journalArticle

37 Citations (Scopus)

Abstract

Male-male aggression is widespread in the animal kingdom and subserves many functions related to the acquisition or retention of resources such as shelter, food, and mates. These functions have been studied widely in the context of sexual selection, yet the proximate mechanisms that trigger or strengthen aggression are not well known for many taxa. Various external sensory cues (visual, audio, chemical) acting alone or in combination stimulate the complex behavioral interactions of fighting behaviors [1]. Here we report the discovery of a 10 kDa protein, termed Loligo β-microseminoprotein (Loligo β-MSP), that immediately and dramatically changes the behavior of male squid from calm swimming and schooling to extreme fighting, even in the absence of females. Females synthesize Loligo β-MSP in their reproductive exocrine glands and embed the protein in the outer tunic of egg capsules, which are deposited on the open sea floor. Males are attracted to the eggs visually, but upon touching them and contacting Loligo β-MSP, they immediately escalate into intense physical fighting with any nearby males. Loligo β-MSP is a distant member of the chordate β-microseminoprotein family [2] found in mammalian reproductive secretions, suggesting that this gene family may have taxonomically widespread roles in sexual competition.

Original languageEnglish (US)
Pages (from-to)322-327
Number of pages6
JournalCurrent Biology
Volume21
Issue number4
DOIs
StatePublished - Feb 22 2011

Fingerprint

Decapodiformes
Loligo
Pheromones
squid
Aggression
pheromones
aggression
Capsules
Animals
Proteins
Genes
Exocrine Glands
exocrine glands
Chordata
behavior change
fighting behavior
Oceans and Seas
sexual selection
Eggs
Cues

ASJC Scopus subject areas

  • Medicine(all)
  • Biochemistry, Genetics and Molecular Biology(all)
  • Agricultural and Biological Sciences(all)

Cite this

Cummins, S. F., Boal, J. G., Buresch, K. C., Kuanpradit, C., Sobhon, P., Holm, J. B., ... Hanlon, R. T. (2011). Extreme aggression in male squid induced by a β-MSP-like pheromone. Current Biology, 21(4), 322-327. https://doi.org/10.1016/j.cub.2011.01.038

Extreme aggression in male squid induced by a β-MSP-like pheromone. / Cummins, Scott F.; Boal, Jean G.; Buresch, Kendra C.; Kuanpradit, Chitraporn; Sobhon, Prasert; Holm, Johanna B.; Degnan, Bernard M.; Nagle, Gregg Thomas; Hanlon, Roger T.

In: Current Biology, Vol. 21, No. 4, 22.02.2011, p. 322-327.

Research output: Contribution to journalArticle

Cummins, SF, Boal, JG, Buresch, KC, Kuanpradit, C, Sobhon, P, Holm, JB, Degnan, BM, Nagle, GT & Hanlon, RT 2011, 'Extreme aggression in male squid induced by a β-MSP-like pheromone', Current Biology, vol. 21, no. 4, pp. 322-327. https://doi.org/10.1016/j.cub.2011.01.038
Cummins SF, Boal JG, Buresch KC, Kuanpradit C, Sobhon P, Holm JB et al. Extreme aggression in male squid induced by a β-MSP-like pheromone. Current Biology. 2011 Feb 22;21(4):322-327. https://doi.org/10.1016/j.cub.2011.01.038
Cummins, Scott F. ; Boal, Jean G. ; Buresch, Kendra C. ; Kuanpradit, Chitraporn ; Sobhon, Prasert ; Holm, Johanna B. ; Degnan, Bernard M. ; Nagle, Gregg Thomas ; Hanlon, Roger T. / Extreme aggression in male squid induced by a β-MSP-like pheromone. In: Current Biology. 2011 ; Vol. 21, No. 4. pp. 322-327.
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