منابع مشابه
Crustaceans
between species, but between different segments on the same animal. They have limbs specially adapted for walking, eating, grooming, swimming, mating, sensing the surrounding environment, brooding young, spearing prey, scraping surfaces and even snapping to make noise. Lobsters provide a good example of the limb diversity that can exist on even a single individual — the thoracic and abdominal a...
متن کاملStalk-eyed flies
success because in this highly competitive business, many males’ bowers are rarely visited by females. The researchers assessed the quality of the bowers in terms of the density and thickness of the sticks used in its construction and also its symmetry. They also checked the decorations on display and grouped them into five categories: artificial and yellow, brown, blue and white natural. The b...
متن کاملThe ‘six-eyed’ stomatopod
Stomatopods (mantis shrimps) possess one of the most complex visual systems in the animal kingdom. Each eye is capable of monocular distance judgement, colour vision involving eight or more primary channels and polarisation vision. This involves a series of eye movements unique among the crustaceans. Furthermore, each eye usually acts almost entirely independently of the other. Colour, in parti...
متن کاملPolarisation Vision of Crustaceans
The photoreceptor design of crustaceans, often containing regular arrays of intrinsically polarisation-sensitive microvilli, has had a profound influence on the visual biology of this subphylum. The land-based arthropods (insects and arachnids) also construct photoreceptors from ordered microvilli; however while in many species polarisation sensitivity results, a general overview of these group...
متن کاملExploring Neurogenesis in Crustaceans
Plasticity, learning and memory, and neurological disease are exciting topics for students. Discussion around these subjects often results in the consideration of the role of neurogenesis in development, or its involvement in a potential cure for some diseases. We have therefore designed a lab that allows students to experimentally examine how the rate of neurogenesis can be altered by environm...
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ژورنال
عنوان ژورنال: Annals and Magazine of Natural History
سال: 1891
ISSN: 0374-5481
DOI: 10.1080/00222939109460446