Does length-at-age of burbot differ between two isolated and trophically dissimilar basins of Lake Champlain?
Burbot (Lota lota) is a piscivore native to higher latitude cold freshwater systems across the globe, including Lake Champlain, but little is known about their ecology and role as a top predator. Lake Champlain (1,250 km2 ) is highly fragmented, with five ecologically distinct basins. Burbot occur t...
Main Author: | |
---|---|
Format: | Text |
Language: | unknown |
Published: |
UVM ScholarWorks
2023
|
Subjects: | |
Online Access: | https://scholarworks.uvm.edu/src/2023/completepresentationlist/168 |
id |
ftunivermont:oai:scholarworks.uvm.edu:src-2369 |
---|---|
record_format |
openpolar |
spelling |
ftunivermont:oai:scholarworks.uvm.edu:src-2369 2024-06-23T07:51:52+00:00 Does length-at-age of burbot differ between two isolated and trophically dissimilar basins of Lake Champlain? Paribello, Emily 2023-01-01T08:00:00Z https://scholarworks.uvm.edu/src/2023/completepresentationlist/168 unknown UVM ScholarWorks https://scholarworks.uvm.edu/src/2023/completepresentationlist/168 UVM Student Research Conference text 2023 ftunivermont 2024-06-11T14:12:02Z Burbot (Lota lota) is a piscivore native to higher latitude cold freshwater systems across the globe, including Lake Champlain, but little is known about their ecology and role as a top predator. Lake Champlain (1,250 km2 ) is highly fragmented, with five ecologically distinct basins. Burbot occur throughout the lake, including two basins which differ in bathymetry, productivity, and prey availability. The Main Lake is deeper, less productive, and contains higher densities of rainbow smelt (Osmerus mordax) and Mysis diluviana than the Inland Sea. We examined burbot diet and growth rates in each basin. We estimated age and diet composition for >100 burbot captured by gillnet and bottom trawling in summer and fall of 2021 and 2022 to quantify differences in burbot ecology through ontogeny and between the two distinct basins. Burbot ages were estimated by two readers, and an age-length key was constructed and applied to >200 burbot captured between 2015-2021. Results from our work will inform ongoing efforts to model coldwater pelagic food webs of Lake Champlain to better understand predator-prey dynamics in large lakes. Text Burbot Lota lota lota The University of Vermont: ScholarWorks @ UVM |
institution |
Open Polar |
collection |
The University of Vermont: ScholarWorks @ UVM |
op_collection_id |
ftunivermont |
language |
unknown |
description |
Burbot (Lota lota) is a piscivore native to higher latitude cold freshwater systems across the globe, including Lake Champlain, but little is known about their ecology and role as a top predator. Lake Champlain (1,250 km2 ) is highly fragmented, with five ecologically distinct basins. Burbot occur throughout the lake, including two basins which differ in bathymetry, productivity, and prey availability. The Main Lake is deeper, less productive, and contains higher densities of rainbow smelt (Osmerus mordax) and Mysis diluviana than the Inland Sea. We examined burbot diet and growth rates in each basin. We estimated age and diet composition for >100 burbot captured by gillnet and bottom trawling in summer and fall of 2021 and 2022 to quantify differences in burbot ecology through ontogeny and between the two distinct basins. Burbot ages were estimated by two readers, and an age-length key was constructed and applied to >200 burbot captured between 2015-2021. Results from our work will inform ongoing efforts to model coldwater pelagic food webs of Lake Champlain to better understand predator-prey dynamics in large lakes. |
format |
Text |
author |
Paribello, Emily |
spellingShingle |
Paribello, Emily Does length-at-age of burbot differ between two isolated and trophically dissimilar basins of Lake Champlain? |
author_facet |
Paribello, Emily |
author_sort |
Paribello, Emily |
title |
Does length-at-age of burbot differ between two isolated and trophically dissimilar basins of Lake Champlain? |
title_short |
Does length-at-age of burbot differ between two isolated and trophically dissimilar basins of Lake Champlain? |
title_full |
Does length-at-age of burbot differ between two isolated and trophically dissimilar basins of Lake Champlain? |
title_fullStr |
Does length-at-age of burbot differ between two isolated and trophically dissimilar basins of Lake Champlain? |
title_full_unstemmed |
Does length-at-age of burbot differ between two isolated and trophically dissimilar basins of Lake Champlain? |
title_sort |
does length-at-age of burbot differ between two isolated and trophically dissimilar basins of lake champlain? |
publisher |
UVM ScholarWorks |
publishDate |
2023 |
url |
https://scholarworks.uvm.edu/src/2023/completepresentationlist/168 |
genre |
Burbot Lota lota lota |
genre_facet |
Burbot Lota lota lota |
op_source |
UVM Student Research Conference |
op_relation |
https://scholarworks.uvm.edu/src/2023/completepresentationlist/168 |
_version_ |
1802643007168577536 |