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Strike-Induced Chemosensory Searching: Variation Among Lizards, Royce E. Ballinger, Nathaniel R. Coady, Joseph M. Prokop, Julio A. Lemos-Espinal
Strike-Induced Chemosensory Searching: Variation Among Lizards, Royce E. Ballinger, Nathaniel R. Coady, Joseph M. Prokop, Julio A. Lemos-Espinal
Transactions of the Nebraska Academy of Sciences and Affiliated Societies
Strike-induced chemosensory searching (SICS) was found in two families of lizards (Teiidae, Anguidae) but not in two other lizard families (Scincidae, Iguanidae). Experiments on another family (Xenosauridae) were inconclusive as to its possession of SICS. The rate of tongue-flicking was significantly increased after a simulated prey strike compared to controls in Cnemidophorus sexlineatus and Barisia imbricata. SICS may be part of a complex foraging strategy evolved in certain reptiles rather than part of a generalized chemosensory behavior because two species of skinks did not exhibit SICS in spite of a well developed vomeronasal olfactory apparatus and known abilities to …
Distribution, Habitats, And Taxonomy Of Ruppia Maritima L. And R. Occidentalis S. Watson In Nebraska, Robert B. Kaul
Distribution, Habitats, And Taxonomy Of Ruppia Maritima L. And R. Occidentalis S. Watson In Nebraska, Robert B. Kaul
Transactions of the Nebraska Academy of Sciences and Affiliated Societies
Specimens of Ruppia from all eleven Nebraska counties in which it is known fall into two groups: R. occidentalis in alkaline Sandhills waters and R. maritima in saline waters of the Platte River Valley and Lancaster County. Ruppia occidentalis is distinguished by its more robust size; redspotted leaves and stems; terete, entire, obtuse leaves; 4-8(9) carpels; and by two elliptic white spots on its endocarp, among other characteristics. Ruppia maritima is more delicate and unspotted; the leaves are oblate in section, sub-apically denticulate, and acute-acuminate; the carpels are 3 or 4, and the endocarp spots are nearly circular. Both species …