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Marine Ecology Progress Series

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MEPS 210:161-165 (2001)  -  doi:10.3354/meps210161

Microsatellite DNA markers indicate a high frequency of multiple paternity within individual field-collected egg capsules of the squid Loligo pealeii

Kendra M. Buresch, Roger T. Hanlon*, Michael R. Maxwell**, Sabine Ring***

Marine Resources Center, Marine Biological Laboratory, Woods Hole, Massachusetts 02543-1015, USA
*Corresponding author: e-mail: Present addresses: **University of California, San Diego, c/o Southwest Fisheries Science Center, PO Box 271, La Jolla, California 92038, USA ***J. W. Goethe-Universität, Zoologisches Institut, Abteilung Ökologie und Evolution, Siesmayerstr. 70, 60057 Frankfurt am Main, Germany

ABSTRACT: Previous behavioral observations of Loligo pealeii revealed the potential for multiple paternity within individual egg capsules, each containing 100 to 300 eggs. Five egg capsules, sampled from 3 nearshore locations over 2 yr, were tested for multiple paternity using 3 microsatellite loci. The minimum number of potential fathers was derived from the number of different alleles present in the progeny. All 5 egg capsules exhibited multiple paternity: genetic markers of at least 4 fathers were found in 2 egg capsules; at least 3 fathers were found in 1 egg capsule, and at least 2 fathers were found in the remaining 2 egg capsules.

KEY WORDS: Microsatellites · Multiple paternity · Loligo · Mating systems · Fishery

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