Genetic differences influencing behavioral temperature regulation in small mammals. I. Nesting by Mus musculus.

نویسندگان

  • C B Lynch
  • J P Hegmann
چکیده

Nesting behavior was found to differ for animals of five different inbred strains of Mus musculus reared in the same environment, indicating heritable differences in level of nesting by Mus. For two separate crosses, hybrid animals built larger nests than did animals of the inbred parental strains. In addition, .from data of one of the crosses and derived generations, a very low heritability of nesting but substantial dominance variance were found. This pattern of results is expected of characters which have been the target of natural selection. Male Mus were found to build larger nests than females of all groups tested. These findings suggest that nesting by Mus musculus represents required thermoregulatory behavior.

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

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Genetic differences influencing behavioral temperature regulation in small mammals. II. Genotype-environment interactions.

The importance o f genotype by temperature interactions contributing to individual differences in nesting behavior has been demonstrated using two inbred strains o f Mus musculus. Exposure to low ambient temperature increased amounts o f cotton used by both the high-nesting (BALB/cJ) and low-nesting (C57BL/6J) strains. The larger total nesting scores o f BALB/cJ mice compared to those o f C57BL...

متن کامل

Quantitative Genetic Analysis of Temperature Regulation in MUS MUSCULUS. I. Partitioning of Variance.

Heritabilities (from parent-offspring regression) and intraclass correlations of full sibs for a variety of traits were estimated from 225 litters of a heterogeneous stock (HS/Ibg) of laboratory mice. Initial variance partitioning suggested different adaptive functions for physiological, morphological and behavioral adjustments with respect to their thermoregulatory significance. Metabolic heat...

متن کامل

"Interspecific Chimeras in Mammals: Successful Production of Live Chimeras Between Mus musculus and Mus caroli" (1980), by Janet Rossant and William I. Frels

In 1980 Janet Rossant [5] and William I. Frels [6] published their paper, ?Interspecific Chimeras in Mammals: Successful Production of Live Chimeras Between Mus musculus and Mus caroli ,? in Science. Their experiment involved the first successful creation of interspecific mammalian chimeras [7]. Mammalian chimeras [8] are valuable for studying early embryonic development. However, in earlier st...

متن کامل

Interspecific chimeras in mammals: successful production of live chimeras between Mus musculus and Mus caroli.

Live chimeras between two species of mouse, Mus musculus and Mus caroli, were produced by blastocyst injection. These chimeras were entirely similar to M. musculus in equilibrium with M. musculus chimeras in their somatic tissue organization. This is the first report of completely normal development of interspecific chimeras in mammals.

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

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

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:
  • Behavior genetics

دوره 2 1  شماره 

صفحات  -

تاریخ انتشار 1972