منابع مشابه
Adaptive learning and coloniality in birds
We introduce here three complementary models to analyze the role of predation pressure in avian coloniality. Different explanations have been proposed for the existence of colonial breeding behavior in birds, but field studies offer no conclusive results. We first propose a learning model in which the decision of birds are taken according to the collective performance. The properties of the sys...
متن کاملColoniality has evolved once in Stolidobranch Ascidians.
Ascidians exhibit a rich array of body plans and life history strategies. Colonial species typically consist of zooids embedded in a common test and brood large, fully developed larvae, while solitary species live singly and usually free-spawn eggs that develop into small, undifferentiated larvae. Ascidians in the order Stolidobranchia include both colonial and solitary species, as well as seve...
متن کاملSpecies selection and the macroevolution of coral coloniality and photosymbiosis.
Differences in the relative diversification rates of species with variant traits are known as species selection. Species selection can produce a macroevolutionary change in the frequencies of traits by changing the relative number of species possessing each trait over time. But species selection is not the only process that can change the frequencies of traits, phyletic microevolution of traits...
متن کاملEvolution of Coloniality via Commodity Selection: What about Variance?
Biology, Kansas State University, Manha an, Kansas 66506, USA. E-mail: [email protected] Department of Biology, Campus Box 1137, Washington University, St. Louis, Missouri 631304899, USA. Department of Wildlife and Fisheries Sciences, Texas A&M University, College Station, Texas 77840-2258, USA EVOLUTION OF COLONIALITY VIA COMMODITY SELECTION: WHAT ABOUT VARIANCE? The Auk 121(1):257–262, 2004 Co...
متن کاملGrowth Rate Consequences of Coloniality in a Harmful Phytoplankter
BACKGROUND Allometric studies have shown that individual growth rate is inversely related to body size across a broad spectrum of organisms that vary greatly in size. Fewer studies have documented such patterns within species. No data exist directly documenting the influence of colony size on growth rate for microscopic, colonial organisms. METHODOLOGY/PRINCIPAL FINDINGS To determine if simil...
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ژورنال
عنوان ژورنال: Shima: The International Journal of Research into Island Cultures
سال: 2019
ISSN: 1834-6057
DOI: 10.21463/shima.13.2.03