Reproductive Traits: Evidence for Sexually Selected Sperm

نویسندگان
چکیده

برای دانلود باید عضویت طلایی داشته باشید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Reproductive Traits: Evidence for Sexually Selected Sperm

Sperm exhibit extraordinary morphological divergence yet precise evolutionary causes often remain elusive. A quantitative genetic study sheds light on the major role postcopulatory sexual selection could play in determining sperm size.

متن کامل

Evaluating performance costs of sexually selected traits

1. Aspects of locomotor performance are thought to be important in a variety of natural contexts, including foraging and escaping from predators. The role of locomotor abilities in sexual selection is less well documented, but is probably of wide importance. 2. Sexual selection may exaggerate traits beyond their optimum with respect to biomechanical or physiological function, thus imposing ‘cos...

متن کامل

The evolution of static allometry in sexually selected traits.

Although it has been the subject of verbal theory since Darwin, the evolution of morphological trait allometries remains poorly understood, especially in the context of sexual selection. Here we present an allocation trade-off model that predicts the optimal pattern of allometry under different selective regimes. We derive a general solution that has a simple and intuitive interpretation and us...

متن کامل

Dynamic feedback between phenotype and physiology in sexually selected traits.

Theory predicts that physiological costs of producing elaborate phenotypes assure the honesty of sexually selected traits. It is generally assumed that these physiological processes drive sexually selected displays. However, a recent study by Safran and colleagues demonstrates that the manipulation of plumage ornaments in barn swallows alters the temporal course of circulating androgens, thus r...

متن کامل

Production and appreciation of humor as sexually selected traits

Both men and women prefer someone with a bgood sense of humorQ as a relationship partner. However, two recent studies have shown that men are not attracted to funny women, suggesting the sexes use the phrase good sense of humor differently. To investigate this question, we measured the importance participants placed on a partner’s production of humor vs. receptivity to their own humor. Men emph...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

ژورنال

عنوان ژورنال: Current Biology

سال: 2008

ISSN: 0960-9822

DOI: 10.1016/j.cub.2007.11.031