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Reproductive Skew and the Origin of Sterile Castes

The American Naturalist, 2003
Reproductive skew theory has not heretofore formally addressed one of the most important questions in evolutionary biology: How can whole-life sterile castes evolve? We construct a transactional skew model investigating under what conditions a subordinate in a multimember group is favored to develop into a morphologically specialized worker caste.
Joonghwan, Jeon, Jae Chun, Choe
openaire   +2 more sources

Reproduction control in fish. II. Delayed reproduction and sterility

1979
Lorsque la maturation sexuelle s'accompagne d'une baisse de la rentabilité économique, l'application de méthodes visant à retarder ou à inhiber définitivement la gamétogenèse peut constituer une solution intéressante : — La production d'animaux à maturation tardive peut être attendue de techniques modifiant les facteurs environnementaux (photopériodes ...
Chevassus, B.   +2 more
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GENETIC ENGINEERING OF REPRODUCTIVE STERILITY IN PINUS RADIATA

Acta Horticulturae, 1998
Generation of transgenic trees for reproductive incompetence is an important application of genetic engineering to commercial forestry. This involves isolation and characterisation of the regulatory regions of the genes expressed at the very early stages of male and female reproductive organ development.
A. Mouradov   +7 more
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Reproduction in mules: Embryo transfer using sterile recipients

Equine Veterinary Journal, 1985
Summary Nine intraspecies horse embryos and four intraspecies donkey embryos were recovered non‐surgically on Days 7 or 8 after ovulation and transferred surgically to recipient mules. Five of the horse embryos and three of the donkey embryos were transferred to cycling mules that had ovulated five to seven days before transfer as ...
C. J. DAVIES, D. F. ANTCZAK, W. R. ALLEN
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Reproductive Sterility in Polyploid Brook Trout, Salvelinus fontinalis

Transactions of the American Fisheries Society, 1978
Abstract Erythrocyte nuclear volumes were measured in brook trout (Salvelinus fontinalis) from Phillips Hatchery in Maine to document naturally occurring polyploid sterility. In eight brook trout in which gonads were lacking or undeveloped, the nuclei were large, suggesting polyploidy.
Standish K. Allen, Jon G. Stanley
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