منابع مشابه
Ecological Conditions Favoring Budding in Colonial Organisms under Environmental Disturbance
Dispersal is a topic of great interest in ecology. Many organisms adopt one of two distinct dispersal tactics at reproduction: the production of small offspring that can disperse over long distances (such as seeds and spawned eggs), or budding. The latter is observed in some colonial organisms, such as clonal plants, corals and ants, in which (super)organisms split their body into components of...
متن کاملThe Lilliput Effect in Colonial Organisms: Cheilostome Bryozoans at the Cretaceous–Paleogene Mass Extinction
Consistent trends towards decreasing body size in the aftermath of mass extinctions--Lilliput effects--imply a predictable response among unitary animals to these events. The occurrence of Lilliput effects has yet to be widely tested in colonial organisms, which are of particular interest as size change may potentially occur at the two hierarchical levels of the colony and the individual zooids...
متن کاملLife in the colonies: learning the alien ways of colonial organisms.
Who needs to go to outer space to study alien beings when the oceans of our own planet abound with bizarre and unknown creatures? Many of them belong to sessile clonal and colonial groups, including sponges, hydroids, corals, octocorals, ascidians, bryozoans, and some polychaetes. Their life histories, in many ways unlike our own, are a challenge for biologists. Studying their ecology, behavior...
متن کاملGlobal energy gradients and size in colonial organisms: worker mass and worker number in ant colonies.
Body mass shapes processes from cell metabolism to community dynamics. Little is known, however, about how the average body mass of individuals varies among ecological communities. Ants alter colony mass by independently changing worker mass and/or worker number. In a survey of 49 ecosystems from tundra to tropical rainforest, average worker mass and worker number were uncorrelated (r(s) = 0.2,...
متن کاملBranching and Self-Organization in Marine Modular Colonial Organisms: An Ecological Approach
(1) Department of Biological Sciences, 109 Cooke Hall, University at Buffalo (The State University of New York), Buffalo, NY 14260, USA. [email protected]; [email protected] phone: 716-645-2881; fax: 717-645-2975 (2) Departamento de Matematicas, Universidad Nacional de Colombia, Bogotá, Colombia. [email protected] phone 011-571-2692265; fax 011-571-2697853 (3) Department of Geography, Univer...
متن کاملذخیره 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: The American Naturalist
سال: 1884
ISSN: 0003-0147,1537-5323
DOI: 10.1086/273584