منابع مشابه
Zoology: The Walking Heads
An analysis of Hox genes reveals that the body of the adorably weird tardigrades is essentially a truncated front end. This illustrates that loss and simplification are a hallmark of the evolution of animal body plans.
متن کاملMedical Zoology
were sleeping; in these mosquitos were observed various stages of the development of the parasite. From such a study, considering the quantity of material used, we might expect, as indeed turned out to be the case, noteworthy results. Contemporaneously, mosquitos were studied, which were caught in stables and poultry yards, which, deriving their nourishment from the blood of birds and domestic ...
متن کاملZoology: War of the Worms
The phylogenetic affinities of Xenacoelomorpha - the phylum comprising Xenoturbella bocki and acoelomorph worms - are debated. Two recent studies conclude they represent the earliest branching bilaterally symmetrical animals, but additional tests may be needed to confirm this notion.
متن کاملThe Raffles Bulletin of Zoology
ABSTRAC7: -Olive-winged bulbul (Pycnonotus plumosus) and cream-vented bulbul (P. simplex) were found to be sedentary non-territorial species with home range sizes of 0.29-7.23 ha during the breeding season. Range sizes were not significantly different between species. Indices of available food sources (or food plants) within the home ranges of both species were also not significantly different....
متن کاملGeneral Zoology
This little book contains a surprisingly large number of good descriptions of experimental techniques, presented with enough theory to make them intelligible. The chapters deal with blood, the circulation, respiration, muscle, peripheral nerve, the physical basis of body heat exchanges, and electronics in physiology. The methods are all physical rather than chemical, and such topics as electro-...
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ژورنال
عنوان ژورنال: Science
سال: 1899
ISSN: 0036-8075,1095-9203
DOI: 10.1126/science.9.211.74