Time lapse photography with two different camera systems for in situ observation of the bivalve Diplodon chilensis (Gray, 1828) in a southern Chilean lake

ABSTRACT We compared the validity of two low cost camera systems to analyze the filtration activity of Diplodon chilensis (Gray, 1828), the most common freshwater bivalve in southern Chile, by using time lapse photography. One camera system (Nikon D300) was connected with an external flash, whereas...

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Autores principales:	Kohlberg,Gesche, Herbst,Anne, Niedzwiedz,Gerd, Woelfl,Stefan, Nimptsch,Jorge, Schories,Dirk
Lenguaje:	English
Publicado:	Facultad de Ciencias Naturales y Oceanográficas, Universidad de Concepción 2019
Materias:	camera system comparison Diplodon chilensis exhalant siphon area time lapse photography
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-65382019000100021
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spelling	oai:scielo:S0717-653820190001000212019-09-16Time lapse photography with two different camera systems for in situ observation of the bivalve Diplodon chilensis (Gray, 1828) in a southern Chilean lakeKohlberg,GescheHerbst,AnneNiedzwiedz,GerdWoelfl,StefanNimptsch,JorgeSchories,Dirk camera system comparison Diplodon chilensis exhalant siphon area time lapse photography ABSTRACT We compared the validity of two low cost camera systems to analyze the filtration activity of Diplodon chilensis (Gray, 1828), the most common freshwater bivalve in southern Chile, by using time lapse photography. One camera system (Nikon D300) was connected with an external flash, whereas the other system (GoPro Hero 3+) contained a permanent video light source. Size change of the exhalant siphon area (ESA) of Diplodon individuals was used to track activity changes over time. The siphon of D. chilensis was completely closed for 3.4 % ± 5.2 % (mean ± SD) of the recording time and it shows a nearly completely opened siphon for 42.7 % ± 22.9 % of the recording time. The mean siphon opening was 68.3 % ± 26.5 % of its potential opening area. Although a red filter was placed in front of the video light source, the mobile fauna, especially Aegla abtao (Schmitt, 1942) and unidentified small fishes were highly attracted by the permanent light. We conclude that both low cost cameras are very suitable for in situ time lapse observation of freshwater clams since both deliver good image quality. However, special attention should be given to the light source since permanent light attracts animals including predators which might change filtration activity of D. chilensis.info:eu-repo/semantics/openAccessFacultad de Ciencias Naturales y Oceanográficas, Universidad de ConcepciónGayana (Concepción) v.83 n.1 20192019-06-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-65382019000100021en10.4067/S0717-65382019000100021
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	camera system comparison Diplodon chilensis exhalant siphon area time lapse photography
spellingShingle	camera system comparison Diplodon chilensis exhalant siphon area time lapse photography Kohlberg,Gesche Herbst,Anne Niedzwiedz,Gerd Woelfl,Stefan Nimptsch,Jorge Schories,Dirk Time lapse photography with two different camera systems for in situ observation of the bivalve Diplodon chilensis (Gray, 1828) in a southern Chilean lake
description	ABSTRACT We compared the validity of two low cost camera systems to analyze the filtration activity of Diplodon chilensis (Gray, 1828), the most common freshwater bivalve in southern Chile, by using time lapse photography. One camera system (Nikon D300) was connected with an external flash, whereas the other system (GoPro Hero 3+) contained a permanent video light source. Size change of the exhalant siphon area (ESA) of Diplodon individuals was used to track activity changes over time. The siphon of D. chilensis was completely closed for 3.4 % ± 5.2 % (mean ± SD) of the recording time and it shows a nearly completely opened siphon for 42.7 % ± 22.9 % of the recording time. The mean siphon opening was 68.3 % ± 26.5 % of its potential opening area. Although a red filter was placed in front of the video light source, the mobile fauna, especially Aegla abtao (Schmitt, 1942) and unidentified small fishes were highly attracted by the permanent light. We conclude that both low cost cameras are very suitable for in situ time lapse observation of freshwater clams since both deliver good image quality. However, special attention should be given to the light source since permanent light attracts animals including predators which might change filtration activity of D. chilensis.
author	Kohlberg,Gesche Herbst,Anne Niedzwiedz,Gerd Woelfl,Stefan Nimptsch,Jorge Schories,Dirk
author_facet	Kohlberg,Gesche Herbst,Anne Niedzwiedz,Gerd Woelfl,Stefan Nimptsch,Jorge Schories,Dirk
author_sort	Kohlberg,Gesche
title	Time lapse photography with two different camera systems for in situ observation of the bivalve Diplodon chilensis (Gray, 1828) in a southern Chilean lake
title_short	Time lapse photography with two different camera systems for in situ observation of the bivalve Diplodon chilensis (Gray, 1828) in a southern Chilean lake
title_full	Time lapse photography with two different camera systems for in situ observation of the bivalve Diplodon chilensis (Gray, 1828) in a southern Chilean lake
title_fullStr	Time lapse photography with two different camera systems for in situ observation of the bivalve Diplodon chilensis (Gray, 1828) in a southern Chilean lake
title_full_unstemmed	Time lapse photography with two different camera systems for in situ observation of the bivalve Diplodon chilensis (Gray, 1828) in a southern Chilean lake
title_sort	time lapse photography with two different camera systems for in situ observation of the bivalve diplodon chilensis (gray, 1828) in a southern chilean lake
publisher	Facultad de Ciencias Naturales y Oceanográficas, Universidad de Concepción
publishDate	2019
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-65382019000100021
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Time lapse photography with two different camera systems for in situ observation of the bivalve Diplodon chilensis (Gray, 1828) in a southern Chilean lake

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