Search Results - "Langen, T. A."

Relative vulnerability of female turtles to road mortality by Steen, D. A., Aresco, M. J., Beilke, S. G., Compton, B. W., Condon, E. P., Kenneth Dodd Jr, C., Forrester, H., Gibbons, J. W., Greene, J. L., Johnson, G., Langen, T. A., Oldham, M. J., Oxier, D. N., Saumure, R. A., Schueler, F. W., Sleeman, J. M., Smith, L. L., Tucker, J. K., Gibbs, J. P.

“…Recent studies suggest that freshwater turtle populations are becoming increasingly male‐biased. A hypothesized cause is a greater vulnerability of female…”
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The Red and the Black: Habituation and the Dear-Enemy Phenomenon in Two Desert Pheidole Ants by Langen, Tom A., Tripet, Frédéric, Nonacs, Peter

“…Many species of territorial animals are more aggressive toward strangers than neighbors, a pattern of aggression referred to as the 'dear-enemy phenomenon.' In…”
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How do animals choose their mates? by Gibson, Robert M, Langen, Tom A

“…How animals search for and evaluate prospective mates has, until recently, been a neglected aspect of sexual selection. Theory and field data suggest that…”
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Terrestrial habitat requirements of nesting freshwater turtles by Steen, D.A., Gibbs, J.P., Buhlmann, K.A., Carr, J.L., Compton, B.W., Congdon, J.D., Doody, J.S., Godwin, J.C., Holcomb, K.L., Jackson, D.R., Janzen, F.J., Johnson, G., Jones, M.T., Lamer, J.T., Langen, T.A., Plummer, M.V., Rowe, J.W., Saumure, R.A., Tucker, J.K., Wilson, D.S.

“…► Aquatic turtles are a globally threatened group. ► Female aquatic turtles undergo terrestrial nesting migrations. ► A primary threat to aquatic turtles is…”
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Reverse sex-biased philopatry in a cooperative bird: genetic consequences and a social cause by BERG, E. C., EADIE, J. M., LANGEN, T. A., RUSSELL, A. F.

“…The genetic structure of a group or population of organisms can profoundly influence the potential for inbreeding and, through this, can affect both dispersal…”
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Skill acquisition and the timing of natal dispersal in the white-throated magpie-jay, Calocitta formosa by LANGEN, TOM A.

“…Offspring may remain associated with parents to gain the skills required for independent survival and reproduction. The ontogeny of foraging and breeding…”
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Sampling and information acquisition by western scrub-jays, Aphelocoma californica by Langen, Tom A., Gibson, Robert M.

“…Animals often make choices based on cues that provide uncertain information about the value of alternative options. To examine how this uncertainty affects…”
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How White-Throated Magpie-Jay Helpers Contribute during Breeding by Langen, Tom A., Vehrencamp, Sandra L.

“…We investigated the mechanisms by which helpers contribute to breeder reproduction in a Costa Rican population of White-throated Magpie-Jays (Calocitta…”
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Ecological Factors Affecting Group and Territory Size in White-Throated Magpie-Jays by Langen, Tom A., Vehrencamp, Sandra L.

“…White-throated Magpie-Jays (Calocitta formosa) breed cooperatively and defend permanent, all-purpose group territories. We measured territory area, resource…”
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Prolonged offspring dependence and cooperative breeding in birds by Langen, Tom A.

“…It has been suggested that the evolution of cooperative breeding in birds is associated with unusually long periods of offspring dependence ; this appears…”
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Comparing Alternative Models to Empirical Data: Cognitive Models of Western Scrub‐Jay Foraging Behavior by Luttbeg, Barney, Langen, Tom A.

“…Animals often select one item from a set of candidates, as when choosing a foraging site or mate, and are expected to possess accurate and efficient rules for…”
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Predation on Artificial Bird Nests in Chaparral Fragments by Langen, Tom A., Bolger, Douglas T., Case, Ted J.

“…The predation rate of artificial bird nests was measured in disturbed chaparral habitat fragments and at an unfragmented site in coastal San Diego County,…”
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Pelagic Bird Survey on Lake Ontario Following Hurricane Isabel, September 2003: Observations and Remarks on Methodology by Langen, Tom A., Twiss, Michael R., Bullerjahn, George S., Wilhelm, Steven W.

“…The abundance and dispersion of pelagic waterbirds was measured on Lake Ontario during the aftermath of the storm system generated by Hurricane Isabel,…”
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The Lake Ontario Great Lakes Science Practicum: A Model for Training Limnology Students on How to Conduct Shipboard Research in the Great Lakes by Twiss, Michael R, Langen, Tom A, Bullerjahn, George S, Wilhelm, Steven W, Rockwell, David C

“…The authors designed and led an 8-day limnology practicum conducted on the R/V Lake Guardian that focused on classical and emerging technologies in a series of…”
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Methodologies for Surveying Herpetofauna Mortality on Rural Highways by LANGEN, TOM A, MACHNIAK, ANGELA, CROWE, ERIN K, MANGAN, CHARLES, MARKER, DANIEL F, LIDDLE, NEAL, RODEN, BRIAN

“…Road mortality can contribute to local and regional declines in amphibian and reptile populations. Thus, there is a need to accurately and efficiently identify…”
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Signalling for food and sex? Begging by reproductive female white-throated magpie-jays by Ellis, Jesse M.S., Langen, Tom A., Berg, Elena C.

“…Food begging is common in nutritionally dependent young of many animals, but structurally homologous calls recur in adult signal repertoires of many species…”
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Assessment of Phosphorus-microbe Interactions in Lake Ontario by Multiple Techniques by Gouvêa, Sandra P., Melendez, Christyanne, Carberry, Matthew J., Bullerjahn, George S., Wilhelm, Steven W., Langen, Tom A., Twiss, Michael R.

“…Conventional and newly-developed techniques to determine the phosphorus (P) status of Lake Ontario phytoplankton were employed in September 2003, immediately…”
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Sampling and information acquisition by western scrub-jays, Aphelocoma californica by Langen, T A, Gibson, R M

“…Animals often make choices based on cues that provide uncertain information about the value of alternative options. To examine how this uncertainty affects…”
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What is right with ‘teaching the controversy’? by Langen, Tom A

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A new species of Isospora Schneider, 1881 (Apicomplexa: Eimeriidae) from the white-throated magpie jay Calocitta formosa (Passeriformes: Corvidae) from Costa Rica by Upton, Steve J., Langen, Tom A., Wright, Timothy F.

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