The Spawning (Enslaved, #2)

Miranda had been snatched and packed for shipping so fast, she was still reeling with shock when the trader marched her and the other women he'd kidnapped from Earth into the compound on the strange, alien world. She discovered that was only the beginning, however. The Hirachi were nearing their spawning season. When the massive, golden skinned, dark haired warriors marched from the sea, she learned that the trader had brought her and the others to sell them to the Hirachi as breeders. Carnal-adult situations, frank language, graphic sexual encounters, multiple partners, spawning orgy, 'gang bang'.