NUTRITION AND SEX DETERMINATION IN ROTIFERS

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

Evidence for meiotic sex in bdelloid rotifers

In their study of genetic exchange in the bdelloid rotifer Adineta vaga, Debortoli et al. [1] conclude that the patchwork pattern of allele sharing among three individuals in the genomic regions they examined is "…unlikely to arise in cases of PTH (Oenothera-like) meiosis since haplotypes are transferred as entire blocks…" and therefore that "Genetic exchange among bdelloid rotifers is more lik...

متن کامل

Determination of Types of Individuals in Aphids, Rotifers and Cladocera1

IN responding to the request of the editor for a review of the investigations into cycles involving alternating modes of reproduction, it has seemed wise to limit the field to the rotifers, aphids and cladocera. These three groups possess a cycle fundamentally alike. A unified discussion of them is therefore possible, even though a unified explanation has not yet been attained. Moreover, to tre...

متن کامل

Maternal nutrition affects reproductive output and sex allocation in a lizard with environmental sex determination.

Life-history traits such as offspring size, number and sex ratio are affected by maternal feeding rates in many kinds of animals, but the consequences of variation in maternal diet quality (rather than quantity) are poorly understood. We manipulated dietary quality of reproducing female lizards (Amphibolurus muricatus; Agamidae), a species with temperature-dependent sex determination, to examin...

متن کامل

Lost and Found: The Secret Sex Lives of Bdelloid Rotifers.

FIFTEEN years ago, Mark Welch and Meselson published a landmark paper that threw down a gauntlet to evolutionary biologists. They presented the first compelling molecular evidence that a large group of animals called bdelloid rotifers had been evolving for many millions of years without sex (Mark Welch and Meselson 2000). Their findings challenged the importance of sexual reproduction for long-...

متن کامل

Sex determination methods in guppy (Poecilia reticulat)

Guppy, Poecilia reticulate, is a member of the Poecilidae family. This species is viviparous and one of the most popular ornamental fish in the world, whose phenotype is usually determined during the last ten days of pregnancy. However, most differentiation and development of secondary sexual traits are formed during adolescence, i.e. about 16 weeks after birth. These secondary characteristics ...

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: Science

سال: 1913

ISSN: 0036-8075,1095-9203

DOI: 10.1126/science.38.987.786