Browsing by Author "Bliss, Dorothy E."
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Item An apparatus for recording the activity of small terrestrial animals. American Museum novitates ; no. 2090(New York, N.Y. : American Museum of Natural History, 1962) Bliss, Dorothy E."An apparatus that has been used for recording spontaneous locomotor activity in land crabs is described. This apparatus seems adaptable for use with other small terrestrial animals and also, with modification, for use with semi-terrestrial and aquatic forms. Basically, the apparatus consists of a Plexiglass rectangular activity chamber (24 by 4 by 4 inches or 24 by 3 by 3 inches) with Plexiglass cover and with divider to keep the animal in the two-thirds of the chamber farthest from the fulcrum. A longitudinal divider can further reduce the usable space of the chamber for work with very small animals. The chamber is attached to a wooden block at one end and hangs suspended by a steel spring at the other end. Movements of the animal within the chamber displace the free end of the chamber and the displacements are registered on a Gorrell Junior Rekorder through recording lever and pen. A signal magnet, activated through an interval timer, marks 30-minute intervals on a time base line"--P. 5.Item Behavior and growth of the land crab Gecarcinus lateralis (Fréminville) in southern Florida. Bulletin of the AMNH ; v. 160, article 2(New York : American Museum of Natural History, 1978) Bliss, Dorothy E.; van Montfrans, Jacques.; van Montfrans, Margaret.; Boyer, Jane R."Studies on the behavior of the land crab Gecarcinus lateralis (Fréminville, 1835) were made on a tract of land at Sabal Point, just north of Boca Raton Inlet, Florida. A portion of this tract is a tropical coastal hammock, one of the few remaining among the east coast of Florida. The thick vegetation of the hammock forms a canopy under which environmental conditions are such as to support a dense population of G. lateralis. Here the crabs can be seen outside of their burrows during hours of daylight; such behavior is unusual in this species. At Sabal Point, information has been gathered on type of vegetation used as food and cover by G. lateralis and on activity of this crab. A photographic record of mating has been obtained. Observations indicate that ovigerous females of this species move down the beaches to the ocean to release their young, and young crabs come up these beaches as they begin life on land. Since all stages of growth were available at Sabal Point, we were able to study some parameters of relative growth in G. lateralis"--P. 115.Item Morphological and physiological aspects of coloration in the land crab Gecarcinus lateralis (Fréminville, 1835). American Museum novitates ; ; no. 2936.(New York, N.Y. : American Museum of Natural History, 1989) Martinez, Edwin A.; Bliss, Dorothy E.