Evaluation of the feeding preference between the aquatic macrophytes Egeria densa and Chara indica by the invasive mollusk Melanoides tuberculata
Abstract This study evaluated the feeding preference of the invasive mollusk Melaniudes tuberculata between the aquatic macrophytes Egeria densa and Chara indica. The experiment consisted of twelve experimental units (glass aquariums) each of which contained three liters of water and three compartme...
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| Format: | Article |
| Language: | English |
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Instituto Internacional de Ecologia
2017-03-01
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| Series: | Brazilian Journal of Biology |
| Subjects: | |
| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-69842017000200234&lng=en&tlng=en |
| _version_ | 1819136532662976512 |
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| author | E. L. Medeiros G. G. Henry-Silva |
| author_facet | E. L. Medeiros G. G. Henry-Silva |
| author_sort | E. L. Medeiros |
| collection | DOAJ |
| description | Abstract This study evaluated the feeding preference of the invasive mollusk Melaniudes tuberculata between the aquatic macrophytes Egeria densa and Chara indica. The experiment consisted of twelve experimental units (glass aquariums) each of which contained three liters of water and three compartments. Fragments of E. densa and C. indica were placed in separate compartments within each unit; the third compartment, which did not contain macrophytes, was used as the control. Twenty Melanoides tuberculata individuals were placed in each unit and monitored hourly over the course of 24 hours for preferential movements. Physical and chemical water variables were measured at the beginning and end of the experiment. Habitat complexity was determined through collected macrophyte fragments and determined using the Fractop program. After 24 hours, the highest average number of individuals was observed in the treatment with Chara indica (ten individuals), which differed significantly from the treatment with E. densa (four individuals) and the control treatment (two individuals). The number of individuals between the E. densa and control treatment were similar. M. tuberculata showed a clear feeding preference for C. indica. |
| first_indexed | 2024-12-22T10:36:29Z |
| format | Article |
| id | doaj.art-e13eb771049b44aa91292a3bcc7842fd |
| institution | Directory Open Access Journal |
| issn | 1678-4375 |
| language | English |
| last_indexed | 2024-12-22T10:36:29Z |
| publishDate | 2017-03-01 |
| publisher | Instituto Internacional de Ecologia |
| record_format | Article |
| series | Brazilian Journal of Biology |
| spelling | doaj.art-e13eb771049b44aa91292a3bcc7842fd2022-12-21T18:29:11ZengInstituto Internacional de EcologiaBrazilian Journal of Biology1678-43752017-03-0177223423910.1590/1519-6984.08415S1519-69842017000200234Evaluation of the feeding preference between the aquatic macrophytes Egeria densa and Chara indica by the invasive mollusk Melanoides tuberculataE. L. MedeirosG. G. Henry-SilvaAbstract This study evaluated the feeding preference of the invasive mollusk Melaniudes tuberculata between the aquatic macrophytes Egeria densa and Chara indica. The experiment consisted of twelve experimental units (glass aquariums) each of which contained three liters of water and three compartments. Fragments of E. densa and C. indica were placed in separate compartments within each unit; the third compartment, which did not contain macrophytes, was used as the control. Twenty Melanoides tuberculata individuals were placed in each unit and monitored hourly over the course of 24 hours for preferential movements. Physical and chemical water variables were measured at the beginning and end of the experiment. Habitat complexity was determined through collected macrophyte fragments and determined using the Fractop program. After 24 hours, the highest average number of individuals was observed in the treatment with Chara indica (ten individuals), which differed significantly from the treatment with E. densa (four individuals) and the control treatment (two individuals). The number of individuals between the E. densa and control treatment were similar. M. tuberculata showed a clear feeding preference for C. indica.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-69842017000200234&lng=en&tlng=enestrutura de habitatgastrópodeexperimento laboratorial |
| spellingShingle | E. L. Medeiros G. G. Henry-Silva Evaluation of the feeding preference between the aquatic macrophytes Egeria densa and Chara indica by the invasive mollusk Melanoides tuberculata Brazilian Journal of Biology estrutura de habitat gastrópode experimento laboratorial |
| title | Evaluation of the feeding preference between the aquatic macrophytes Egeria densa and Chara indica by the invasive mollusk Melanoides tuberculata |
| title_full | Evaluation of the feeding preference between the aquatic macrophytes Egeria densa and Chara indica by the invasive mollusk Melanoides tuberculata |
| title_fullStr | Evaluation of the feeding preference between the aquatic macrophytes Egeria densa and Chara indica by the invasive mollusk Melanoides tuberculata |
| title_full_unstemmed | Evaluation of the feeding preference between the aquatic macrophytes Egeria densa and Chara indica by the invasive mollusk Melanoides tuberculata |
| title_short | Evaluation of the feeding preference between the aquatic macrophytes Egeria densa and Chara indica by the invasive mollusk Melanoides tuberculata |
| title_sort | evaluation of the feeding preference between the aquatic macrophytes egeria densa and chara indica by the invasive mollusk melanoides tuberculata |
| topic | estrutura de habitat gastrópode experimento laboratorial |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-69842017000200234&lng=en&tlng=en |
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