Effect of Mating Status on the Female Mate Choice in the Aphidophagous Ladybird Beetle, Hippodamia variegata (Goeze) (Coleoptera: Coccinellidae)

سال انتشار: 1399
محل انتشار: بیست و یکمین کنگره ملی و نهمین کنگره بین المللی زیست شناسی ایران
کد COI اختصاصی: BIOCONF21_0580
زبان مقاله: انگلیسی
تعداد مشاهده: 289

نویسندگان

School of Biology and Center of Excellence in Phylogeny of Living Organisms, College of Science, University of Tehran

چکیده

Since the process of gamete production and fertilization are costly in terms of being predated, infected or injured; therefore, a methods to optimize the distribution and utilization of these gametes is to choose mates based on their mating status. Many studies consider that virgin males can provide more nutrients to females via ejaculates than previously mated males and this can lead to greater fecundity; however, previously mated males may be more competitive than virgin males and they attempt to copulate more frequently, while in several investigations male mating history could not alter female reproductive success. In this experiment, we examined female mate choice of Hippodamia variegata when exposed to two males with different mating status, a virgin male and a previously mated male and we observed to record the male with which the female mated. By using Mann-Whitney U test through SPSS software it was clear that female choices did not differ between virgin and previously mated males (۱۳ virgin and ۱۲ mated males of ۲۵ females; two-tailed binomial test: P = ۱.۰۰۰). The copulation latency was shorter for mated males (U = ۱۰.۰۰۰, P = ۰.۰۰۰۵) and, moreover, the copulation duration was longer for them (U = ۰.۰۰۰۵, P = ۰.۰۰۰۵). Our study reveals that sexual status of males does not affect female mate choice, but more eagerness can explain shorter period prior to copulating for males with mating history; however repeated matings probably cause reduction in ejaculate production and consequently prolonged mating duration could assure paternity share.

کلیدواژه ها

Mating experience, Sexual selection, Reproductive success, Paternal effect

مقالات مرتبط جدید

اطلاعات بیشتر در مورد COI

COI مخفف عبارت CIVILICA Object Identifier به معنی شناسه سیویلیکا برای اسناد است. COI کدی است که مطابق محل انتشار، به مقالات کنفرانسها و ژورنالهای داخل کشور به هنگام نمایه سازی بر روی پایگاه استنادی سیویلیکا اختصاص می یابد.

کد COI به مفهوم کد ملی اسناد نمایه شده در سیویلیکا است و کدی یکتا و ثابت است و به همین دلیل همواره قابلیت استناد و پیگیری دارد.