41. In non-primates, copulatory calling predominantly occurs before copulation in order to attract mates ( mating call ). 42. The researchers note that all of these goals are apparently congruent with female copulatory vocalizations in non-human primates. 43. Females have a tapered narrow posterior end, while males have a feathery posterior end owing to their copulatory bursa. 44. The copulatory apparatus of " Geobia " has a permanent but small penis and an elongated prostatic vesicle. 45. However, only " Starksia " species possess gonopodia ( modified anal fins used as a copulatory organ ). 46. Because mating occurs at sea and males have no copulatory organ, males must hover over females for a successful mating. 47. Conversely, electrical stimulation of this area triggers male copulatory behavior, as measured by decreases in the latency to ejaculate. 48. This adjective is commonly used in describing various accessory structures of male copulatory organs found in many kinds of invertebrate animals. 49. In seabirds, the copulatory stage usually occurs after, and occasionally concurrently, with the formation of the pair bond. 50. By attracting other males through post-copulatory calls, the female might provoke mate guarding behavior in their initial mate.
