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Migratory and foraging movements in ...

Oliveira, Evandro Gama de.

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Migratory and foraging movements in diurnal neotropical Lepidoptera: Experimental studies on orientation and learning.

Record Type:	Electronic resources : Monograph/item
Title/Author:	Migratory and foraging movements in diurnal neotropical Lepidoptera: Experimental studies on orientation and learning./
Author:	Oliveira, Evandro Gama de.
Description:	154 p.
Notes:	Source: Dissertation Abstracts International, Volume: 60-07, Section: B, page: 3148.
Contained By:	Dissertation Abstracts International60-07B.
Subject:	Biology, Zoology. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=9937115
ISBN:	0599384298

Migratory and foraging movements in diurnal neotropical Lepidoptera: Experimental studies on orientation and learning.
Oliveira, Evandro Gama de.

Migratory and foraging movements in diurnal neotropical Lepidoptera: Experimental studies on orientation and learning. - 154 p.

Source: Dissertation Abstracts International, Volume: 60-07, Section: B, page: 3148.

Thesis (Ph.D.)--The University of Texas at Austin, 1998.

Orientation behavior in animals can be defined as an active and self-directed movement through space. Assuming that such movements are adaptive, the term "orientation fitness" can be defined as the ability of an organism to minimize distance from resources while maximizing distance from sources of stress. The diversity of mechanisms used to achieve this goal is superb, including complex behaviors as sun navigation and spatial memory. The expression of such behaviors by animals has always inspired biologists and a vast body of research has been produced.

ISBN: 0599384298Subjects--Topical Terms:

1018632
Biology, Zoology.

Migratory and foraging movements in diurnal neotropical Lepidoptera: Experimental studies on orientation and learning.
LDR:03279nmm 2200313 4500 001 1862002
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020 $a 0599384298
035 $a (UnM)AAI9937115
035 $a AAI9937115
040 $a UnM $c UnM
100 1 $a Oliveira, Evandro Gama de. $3 1949575
245 1 0 $a Migratory and foraging movements in diurnal neotropical Lepidoptera: Experimental studies on orientation and learning.
300 $a 154 p.
500 $a Source: Dissertation Abstracts International, Volume: 60-07, Section: B, page: 3148.
500 $a Supervisor: Lawrence E. Gilbert.
502 $a Thesis (Ph.D.)--The University of Texas at Austin, 1998.
520 $a Orientation behavior in animals can be defined as an active and self-directed movement through space. Assuming that such movements are adaptive, the term "orientation fitness" can be defined as the ability of an organism to minimize distance from resources while maximizing distance from sources of stress. The diversity of mechanisms used to achieve this goal is superb, including complex behaviors as sun navigation and spatial memory. The expression of such behaviors by animals has always inspired biologists and a vast body of research has been produced.
520 $a This dissertation is primarily concerned with the orientation mechanisms used by Neotropical diurnal Lepidoptera, and is divided into two major sections. The first section deals with orientation behavior exhibited by butterflies during long-distance migratory movements. It includes a five-year study on a multi-species system of migratory butterflies in Central Panama and a brief study with the day-flying moth Urania fulgens in Costa Rica. In both studies, the major focus was the use of the sun as a navigational aid during migration. In Panama, clock-shift experiments were performed with two butterfly species (Aphrissa statira and Phoebis argante). Results from both studies support the hypothesis that these species use a sun compass for migratory orientation. A collaborative study on wind drift compensation by such migrant lepidopterans is also included.
520 $a The second section is centered on small-scale orientation behavior exhibited by butterflies regarding floral resource availability. Greenhouse experiments were performed with Heliconius foraging on patches of artificial flowers to address questions related to movement patterns and learning. The results showed several instances of non-random foraging, suggesting efficient use of floral nectar and pollen under natural conditions. The main results can be summarized as (i) butterflies exhibit a variety of hard-wired rules for foraging within and between small-scale arrays of experimental flowers; (ii) these fixed behaviors tend to prevail over location learning in such small-scale settings; (iii) butterfly foraging efficiency increases with experience; (iv) butterflies learn colors relatively fast but fail to associate color with time of day.
590 $a School code: 0227.
650 4 $a Biology, Zoology. $3 1018632
650 4 $a Biology, Ecology. $3 1017726
650 4 $a Biology, Entomology. $3 1018619
690 $a 0472
690 $a 0329
690 $a 0353
710 2 0 $a The University of Texas at Austin. $3 718984
773 0 $t Dissertation Abstracts International $g 60-07B.
790 1 0 $a Gilbert, Lawrence E., $e advisor
790 $a 0227
791 $a Ph.D.
792 $a 1998
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=9937115