Graduate Student Research Symposium 2011

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| 9:00-9:15  || Dr. Lee Allen Aggison, Jr. Interim Vice Provost for Graduate Education & Dean of the Graduate School  || Welcome address  
 
| 9:00-9:15  || Dr. Lee Allen Aggison, Jr. Interim Vice Provost for Graduate Education & Dean of the Graduate School  || Welcome address  
 
|-  
 
|-  
| 9:15-9:30  ||Jose Pereira  || TBA
+
| 9:15-9:30  || Frank Smith || Tardigrades and the origin of the arthropod appendage.
 
|-  
 
|-  
| 9:30-9:45  || Beth Wade|| Gene flow and species boundaries of 3 cicada species in NZ (Cicadidae: Kikihia)
+
| 9:30-9:45  || Beth Wade|| Gene flow and species boundaries of 3 cicada species in NZ (Cicadidae: ''Kikihia'')
 
|-  
 
|-  
| 9:45-10:00  || Bill Ryerson || TBA
+
| 9:45-10:00  || Bill Ryerson || The development and application of an inexpensive particle image velocimetry (PIV) system in animal biomechanics
 
|-  
 
|-  
| 10:00-10:15  ||Maria Pickering  || TBA
+
| 10:00-10:15  ||Maria Pickering  || Examining the cestode taxon ''Trilocularia'' in 2 host shark species and across 3 disparate localities
 
|-  
 
|-  
| 10:15-10:30  || Chris Owen || TBA
+
| 10:15-10:30  || Chris Owen || The utility of 454 sequence data for marker design and phylogenomic analyses
 
|-  
 
|-  
 
!style="background:#efefef;"| 10:30-11:00  ||  || '''Morning Break - Drinks and Fruit'''
 
!style="background:#efefef;"| 10:30-11:00  ||  || '''Morning Break - Drinks and Fruit'''
 
|-  
 
|-  
| 11:00-11:15  || [http://hydrodictyon.eeb.uconn.edu/eebedia/index.php/Jonathan_Velotta Jon Velotta] || TBA
+
| 11:00-11:15  || [http://hydrodictyon.eeb.uconn.edu/eebedia/index.php/Jonathan_Velotta Jon Velotta] || Functional consequences of land-locking in alewives
 
|-  
 
|-  
 
| 11:15-11:30  || Alejandro Rico || Hummingbirds´"pausing behavior"  
 
| 11:15-11:30  || Alejandro Rico || Hummingbirds´"pausing behavior"  
 
|-  
 
|-  
| 11:30-11:45  || ||  
+
| 11:30-11:45  || Sarah Redmond || Exploring the impact of ocean acidification and warming on the microscopic survival stages of the kelp, ''Saccharina latissima''
 
|-  
 
|-  
| 11:45-12:00  || Geert Goemans || Field work in the Neotropics
+
| 11:45-12:00  || Geert Goemans || Images and impressions of collecting in the Neotropics
 
|-  
 
|-  
 
!style="background:#efefef;"| 12:00-1:30 ||  ||  Lunch - Sandwiches and Salad
 
!style="background:#efefef;"| 12:00-1:30 ||  ||  Lunch - Sandwiches and Salad
 
|-  
 
|-  
| 1:30-2:00  || Dr. Karen Ober Assistant Professor of Biology at College of the Holy Cross || Keynote Address
+
| 1:30-2:00  || Dr. Karen Ober Assistant Professor of Biology at College of the Holy Cross || Keynote Address: Beetle evolution research at a small liberal arts college
 
|-  
 
|-  
| 2:00-2:15  ||Kathryn Theiss ||  TBA
+
| 2:00-2:15  ||Adam M. Wilson ||  Conservation Photography in the Lower Rio Grande Valley
 
|-  
 
|-  
| 2:15-2:30  || ||  
+
| 2:15-2:30  ||Jose Pereira  || Yellowtail flounder (Limanda ferruginea) On Georges Bank: Testing Models of Habitat Use
 
|-  
 
|-  
| 2:30-2:45  ||  ||  
+
| 2:30-2:45  || [[Karolina Fucikova]] || ''Bracteacoccus'' and its relatives: a case of cryptic genera.
 
|-  
 
|-  
| 2:45-3:00 || ||  
+
| 2:45-3:00 || Alyssa Borowske || A Tale of Two Sparrows
 
|-  
 
|-  
| 3:00-3:15  || ||  
+
| 3:00-3:15  || Manette Sandor || I am the Lorax, I speak for the trees.
 
|-  
 
|-  
| 3:15-3:30  || ||  
+
| 3:15-3:30  ||Alexander DeFrancesco || Pura Vida:  Functional Plant Traits 
 +
|- 
 +
| 3:30-3:45  ||Johana Goyes-Vallejos || DNA extraction methods for the study of reptiles.
 
|-  
 
|-  
!style="background:#efefef;" | 3:30-3:45 || || '''Speed Talks'''
+
!style="background:#efefef;" | 3:45-4:00 || || '''Speed Talks'''
 
|-  
 
|-  
| 3:30-3:35 ||Lily Lewis  || Preliminary thoughts on the phylogeography of a dung moss
+
| 3:45-3:50 ||Lily Lewis  || Preliminary thoughts on the phylogeography of a dung moss
 
|-  
 
|-  
| 3:35-3:40 ||   ||  
+
| 3:50-3:55 ||Chris Field  || A Motion Chart of bird population trends.
 
|-  
 
|-  
| 3:40-3:45 ||  || Biological Image Contest - 2011
+
| 3:55-4:00 ||  || [http://hydrodictyon.eeb.uconn.edu/eebedia/index.php/2011_Graduate_Student_Biological_Photo_Contest Biological Image Contest - 2011]
 
|-   
 
|-   
 
|}
 
|}
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__NOEDITSECTION__
 
__NOEDITSECTION__
 
==Abstracts==
 
==Abstracts==
<span id="NAME">''' Name Here'''</span>
 
<br> Title Here <br>
 
Abstract Here
 
<br>
 
  
 +
<span id="NAME">''' Name'''</span>
 +
<br> Title <br>
 +
Abstract
 +
 +
 +
<span id="NAME">''' Jose J. Pereira'''</span>
 +
<br> Yellowtail flounder (Limanda ferruginea) On Georges Bank: Testing Models of Habitat Use <br>A better understanding of habitat requirements is mandated by federal fisheries law.  One way to approach this issue is to examine factors that influence distribution.  We are investigating how distribution changes with abundance, which is of particular interest in exploited populations that undergo large changes in abundance.  Three theories have been proposed for the relationship between marine fish abundance and distribution: the Constant Density Model (CDM), the Proportional Density Model (PDM), and MacCall’s Basin Model (MBM) which incorporates the Ideal Free Distribution model of Fretwell and Lucas. The CDM predicts that the population’s range expands and contracts with changes in global abundance while local density does not vary. Habitat quality varies and the best habitats, conferring the highest fitness, remain occupied at lowest abundance.  The PDM predicts that range remains constant and that local density varies with changes in abundance. Local density is highest in habitats that confer the highest fitness.  The MBM predicts that there is density-dependent habitat use, such that both local density and species range vary with changes in abundance. Fitness should be the same across habitats because of these density-dependent processes. We are testing these theories using geospatial modeling and National Marine Fisheries Service trawl survey data. We test for changes in range by mapping non-zero catches at high and low population levels. We test for fitness changes across habitats by assessing spatial autocorrelation in fitness metrics (weight-at-length, weight-at-age). Results from analysis of yellowtail flounder (Limanda ferruginea) show evidence of spatial autocorrelation for both males and females except during spring spawning season when populations are low. Data from both the spring and fall survey shows that the area occupied by the species increases with increasing population size. While there are other predictions made by these models which we have not yet tested, these results support the constant density model.
 +
 +
 
 +
<span id="NAME">''' Karolina Fucikova'''</span>
 +
<br>''Bracteacoccus'' and its relatives: a case of cryptic genera <br>
 +
''Bracteacoccus'', one of the most common soil algae, is taxonomically interwoven with several other genera. In particular, its relationship with the morphologically similar ''Dictyococcus, Muriella'' and ''Pseudomuriella'' is quite tangled because these share a similar overall morphology with ''Bracteacoccus''. This has raised questions about the validity of these genera and the proper taxonomic disposition for their species. Phylogenetic relationships for a number of these taxa can be addressed using molecular sequence data obtained from live type strains. Using analyses of the 18S and rbcL genes, we determined that monophyly of ''Bracteacoccus'' can be achieved only by excluding four unrelated lineages that historically have been included under this name. Firstly, B. engadinensis belongs in the genus ''Pseudomuriella'', along with ''Dictyococcus schumacherensis''. Secondly, ''B. cinnabarinus'' and ''B. minutus'' group with ''Muriella zofingiensis'', a species with its own obscure taxonomic history. These three species are distinct from the true ''Muriella'' lineage (Trebouxiophyceae) and we propose to assign them to the resurrected genus ''Chromochloris'' (Chlorophyceae). Lastly, ''Dictyococcus'' was shown to be an unrelated lineage that can be reliably distinguished from ''Bracteacoccus'' based on chloroplast morphology. Our results indicate that ''Pseudomuriella, Chromochloris'' and ''Bracteacoccus'' are morphologically cryptic genera, representing closely related yet divergent lineages.
 
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[[Category:Graduate Research Symposium]]
 
[[Category:Graduate Research Symposium]]
 
[[Category:Graduate Student Resources]]
 
[[Category:Graduate Student Resources]]
 
__NOTOC__
 
__NOTOC__

Latest revision as of 16:54, 18 March 2011

Saturday, March 19, 2011

Biology/Physics Building Room 130, 9:00am to ~ 4:00pm



The EEB Graduate Student Symposium is an all day event where graduate students present their research to other graduate students and faculty. Any EEB graduate student can present: BSMS, masters, PhD, old and new students. New graduate students usually present research ideas or preliminary data, while those more ‘seasoned’ students present their most recent results, often in preparation for upcoming spring and summer meetings.

Picheader1.gif

New Schedule

Time Speaker Title
8:30-9:00 Coffee & Tea (drinks only)
9:00-9:15 Dr. Lee Allen Aggison, Jr. Interim Vice Provost for Graduate Education & Dean of the Graduate School Welcome address
9:15-9:30 Frank Smith Tardigrades and the origin of the arthropod appendage.
9:30-9:45 Beth Wade Gene flow and species boundaries of 3 cicada species in NZ (Cicadidae: Kikihia)
9:45-10:00 Bill Ryerson The development and application of an inexpensive particle image velocimetry (PIV) system in animal biomechanics
10:00-10:15 Maria Pickering Examining the cestode taxon Trilocularia in 2 host shark species and across 3 disparate localities
10:15-10:30 Chris Owen The utility of 454 sequence data for marker design and phylogenomic analyses
10:30-11:00 Morning Break - Drinks and Fruit
11:00-11:15 Jon Velotta Functional consequences of land-locking in alewives
11:15-11:30 Alejandro Rico Hummingbirds´"pausing behavior"
11:30-11:45 Sarah Redmond Exploring the impact of ocean acidification and warming on the microscopic survival stages of the kelp, Saccharina latissima
11:45-12:00 Geert Goemans Images and impressions of collecting in the Neotropics
12:00-1:30 Lunch - Sandwiches and Salad
1:30-2:00 Dr. Karen Ober Assistant Professor of Biology at College of the Holy Cross Keynote Address: Beetle evolution research at a small liberal arts college
2:00-2:15 Adam M. Wilson Conservation Photography in the Lower Rio Grande Valley
2:15-2:30 Jose Pereira Yellowtail flounder (Limanda ferruginea) On Georges Bank: Testing Models of Habitat Use
2:30-2:45 Karolina Fucikova Bracteacoccus and its relatives: a case of cryptic genera.
2:45-3:00 Alyssa Borowske A Tale of Two Sparrows
3:00-3:15 Manette Sandor I am the Lorax, I speak for the trees.
3:15-3:30 Alexander DeFrancesco Pura Vida: Functional Plant Traits
3:30-3:45 Johana Goyes-Vallejos DNA extraction methods for the study of reptiles.
3:45-4:00 Speed Talks
3:45-3:50 Lily Lewis Preliminary thoughts on the phylogeography of a dung moss
3:50-3:55 Chris Field A Motion Chart of bird population trends.
3:55-4:00 Biological Image Contest - 2011
Picheader1.gif


Abstracts

Name
Title
Abstract


Jose J. Pereira
Yellowtail flounder (Limanda ferruginea) On Georges Bank: Testing Models of Habitat Use
A better understanding of habitat requirements is mandated by federal fisheries law. One way to approach this issue is to examine factors that influence distribution. We are investigating how distribution changes with abundance, which is of particular interest in exploited populations that undergo large changes in abundance. Three theories have been proposed for the relationship between marine fish abundance and distribution: the Constant Density Model (CDM), the Proportional Density Model (PDM), and MacCall’s Basin Model (MBM) which incorporates the Ideal Free Distribution model of Fretwell and Lucas. The CDM predicts that the population’s range expands and contracts with changes in global abundance while local density does not vary. Habitat quality varies and the best habitats, conferring the highest fitness, remain occupied at lowest abundance. The PDM predicts that range remains constant and that local density varies with changes in abundance. Local density is highest in habitats that confer the highest fitness. The MBM predicts that there is density-dependent habitat use, such that both local density and species range vary with changes in abundance. Fitness should be the same across habitats because of these density-dependent processes. We are testing these theories using geospatial modeling and National Marine Fisheries Service trawl survey data. We test for changes in range by mapping non-zero catches at high and low population levels. We test for fitness changes across habitats by assessing spatial autocorrelation in fitness metrics (weight-at-length, weight-at-age). Results from analysis of yellowtail flounder (Limanda ferruginea) show evidence of spatial autocorrelation for both males and females except during spring spawning season when populations are low. Data from both the spring and fall survey shows that the area occupied by the species increases with increasing population size. While there are other predictions made by these models which we have not yet tested, these results support the constant density model.


Karolina Fucikova
Bracteacoccus and its relatives: a case of cryptic genera
Bracteacoccus, one of the most common soil algae, is taxonomically interwoven with several other genera. In particular, its relationship with the morphologically similar Dictyococcus, Muriella and Pseudomuriella is quite tangled because these share a similar overall morphology with Bracteacoccus. This has raised questions about the validity of these genera and the proper taxonomic disposition for their species. Phylogenetic relationships for a number of these taxa can be addressed using molecular sequence data obtained from live type strains. Using analyses of the 18S and rbcL genes, we determined that monophyly of Bracteacoccus can be achieved only by excluding four unrelated lineages that historically have been included under this name. Firstly, B. engadinensis belongs in the genus Pseudomuriella, along with Dictyococcus schumacherensis. Secondly, B. cinnabarinus and B. minutus group with Muriella zofingiensis, a species with its own obscure taxonomic history. These three species are distinct from the true Muriella lineage (Trebouxiophyceae) and we propose to assign them to the resurrected genus Chromochloris (Chlorophyceae). Lastly, Dictyococcus was shown to be an unrelated lineage that can be reliably distinguished from Bracteacoccus based on chloroplast morphology. Our results indicate that Pseudomuriella, Chromochloris and Bracteacoccus are morphologically cryptic genera, representing closely related yet divergent lineages.


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