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Articles 1 - 6 of 6
Full-Text Articles in Life Sciences
Why We Still Need To Worry About Bees, Meaghan Lee Callaghan
Why We Still Need To Worry About Bees, Meaghan Lee Callaghan
Capstones
American honey bees, and other native bee species, are still in decline, though the specter of colony collapse disorder may be fading behind us. Colony decline, the loss of bees overwinter experienced across the country at a quarter to third lost per hive (sometimes more), is now expected. Losses can include those from colony collapse disorder. The author discusses the different causes for colony decline and speaks to bee health scientists and local beekeepers. Read more at: http://www.meaghanleecallaghan.com/capstone/index.html
The Power Of Associative Learning And The Ontogeny Of Optimal Behaviour, Magnus Enquist, Johan Lind, Stefano Ghirlanda
The Power Of Associative Learning And The Ontogeny Of Optimal Behaviour, Magnus Enquist, Johan Lind, Stefano Ghirlanda
Publications and Research
Behaving efficiently (optimally or near-optimally) is central to animals’ adaptation to their environment. Much evolutionary biology assumes, implicitly or explicitly, that optimal behavioural strategies are genetically inherited, yet the behaviour of many animals depends crucially on learning. The question of how learning contributes to optimal behaviour is largely open. Here we propose an associative learning model that can learn optimal behaviour in a wide variety of ecologically relevant circumstances. The model learns through chaining, a term introduced by Skinner to indicate learning of behaviour sequences by linking together shorter sequences or single behaviours. Our model formalizes the concept of conditioned …
The Role Of Individual Cognitive And Behavioral Ontogeny In Organization And Evolution Of Social Systems, Andrew G. Fulmer
The Role Of Individual Cognitive And Behavioral Ontogeny In Organization And Evolution Of Social Systems, Andrew G. Fulmer
Dissertations, Theses, and Capstone Projects
Exploration and explanation of the relationship between individual variation in behavior and the composition and adaptive success of social groups or populations are crucial problems in the fields of behavioral ecology, ethology, and comparative psychology. These questions have been the subject of a longstanding discussion at both the proximate and ultimate levels of inquiry. Adaptive mechanisms explaining social decision making, both in terms of affiliative and competitive partner choices, are at the center of such discussions. Inclusive fitness, kin-selection, handicap or prestige, risk seeking and risk avoiding strategies, pay-to-stay/reward principles, as well as other theories have been proposed and supported …
A Case Study: Observations Of Behaviors & Vocalizations In A Captive Asian Elephant (Elephas Maximus) During Quarantine, Alexandra L. Dilley
A Case Study: Observations Of Behaviors & Vocalizations In A Captive Asian Elephant (Elephas Maximus) During Quarantine, Alexandra L. Dilley
Theses and Dissertations
Bozie, an Asian elephant (Elephas maximus), was relocated from the Baton Rouge Zoo to Smithsonian’s National Zoo. During a requisite 29-day quarantine period, I recorded Bozie’s stress-related behaviors and the vocalizations she produced when she was alone and with her keepers in free and protected contact.
Diversity-Dependent Cladogenesis Throughout Western Mexico: Evolutionary Biogeography Of Rattlesnakes (Viperidae: Crotalinae: Crotalus And Sistrurus), Christopher Blair, Santiago Sánchez-Ramírez
Diversity-Dependent Cladogenesis Throughout Western Mexico: Evolutionary Biogeography Of Rattlesnakes (Viperidae: Crotalinae: Crotalus And Sistrurus), Christopher Blair, Santiago Sánchez-Ramírez
Publications and Research
Rattlesnakes (Crotalus and Sistrurus) represent a radiation of approximately 42 species distributed throughout the New World from southern Canada to Argentina. Interest in this enigmatic group of snakes continues to accrue due, in part, to their ecomorphological diversity, contributions to global envenomations, and potential medicinal importance. Although the group has garnered substantial attention from systematists and evolutionary biologists for decades, little is still known regarding patterns of lineage diversification. In addition, few studies have statistically quantified broad-scale biogeographic patterns in rattlesnakes to ascertain how dispersal occurred throughout the New World, particularly among the different major biomes of the …
Function Of Male Sexual Signaling In The Brief Squid (Lolliguncula Brevis), Lauren A. Piperno
Function Of Male Sexual Signaling In The Brief Squid (Lolliguncula Brevis), Lauren A. Piperno
Theses and Dissertations
This study explores male signaling in the brief squid. Females spend more time close to males during male signal production, but did not change their orientation to enable mating. Females reduced their own signaling during male signals. Male sexual signaling is directed at females, yet the precise function remains elusive.