Natural diet of Macrobrachium brasiliense (Crustacea, Decapoda) in a Cerrado stream
ABSTRACT Knowledge about the diet of a given species is essential to provide information on the growth and maintenance of populations in a natural environment. Macrobrachium brasiliense (Heller, 1862) is a species of freshwater prawn widely distributed in Brazil, being frequent in aquatic environmen...
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Fundação Zoobotânica do Rio Grande do Sul
2021-03-01
|
| Series: | Iheringia: Série Zoologia |
| Subjects: | |
| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212021000100203&tlng=en |
| _version_ | 1818719925246623744 |
|---|---|
| author | Barbara R. F. da Cruz Marina C. Cunha Alessandra A. de P. Bueno Giuliano B. Jacobucci |
| author_facet | Barbara R. F. da Cruz Marina C. Cunha Alessandra A. de P. Bueno Giuliano B. Jacobucci |
| author_sort | Barbara R. F. da Cruz |
| collection | DOAJ |
| description | ABSTRACT Knowledge about the diet of a given species is essential to provide information on the growth and maintenance of populations in a natural environment. Macrobrachium brasiliense (Heller, 1862) is a species of freshwater prawn widely distributed in Brazil, being frequent in aquatic environments inserted in the Cerrado biome. The aim of this study was to evaluate the natural diet of a population of M. brasiliense, comparing the consumed food items according to sex, seasonality and body size of individuals. Monthly collections were carried out between September 2018 and August 2019. The individuals collected had their sex identified and the length of the cephalothorax measured. Stomach content was assessed based on the degree of repletion, the method of points and the frequency of occurrence. There was a high frequency of plant material in the stomach contents and a smaller but significant frequency of aquatic insects. There were no significant differences regarding the diet of males and females and between the dry and rainy seasons. It was observed an increase in total insect consumption with the increase in size of males and females of M. brasiliense. A diet preference for Trichoptera was recorded in both sampling periods for males and females. The results obtained confirm an omnivorous diet for the species and suggest that the composition and proportion of items may vary depending on the size of the individuals and the availability of the items in the environment. |
| first_indexed | 2024-12-17T20:14:41Z |
| format | Article |
| id | doaj.art-954504f298d94124bbe50051d1590851 |
| institution | Directory Open Access Journal |
| issn | 1678-4766 |
| language | English |
| last_indexed | 2024-12-17T20:14:41Z |
| publishDate | 2021-03-01 |
| publisher | Fundação Zoobotânica do Rio Grande do Sul |
| record_format | Article |
| series | Iheringia: Série Zoologia |
| spelling | doaj.art-954504f298d94124bbe50051d15908512022-12-21T21:34:09ZengFundação Zoobotânica do Rio Grande do SulIheringia: Série Zoologia1678-47662021-03-0111110.1590/1678-4766e2021003Natural diet of Macrobrachium brasiliense (Crustacea, Decapoda) in a Cerrado streamBarbara R. F. da Cruzhttps://orcid.org/0000-0002-3355-2843Marina C. Cunhahttps://orcid.org/0000-0002-5870-7485Alessandra A. de P. Buenohttps://orcid.org/0000-0001-7809-7189Giuliano B. Jacobuccihttps://orcid.org/0000-0001-7567-4710ABSTRACT Knowledge about the diet of a given species is essential to provide information on the growth and maintenance of populations in a natural environment. Macrobrachium brasiliense (Heller, 1862) is a species of freshwater prawn widely distributed in Brazil, being frequent in aquatic environments inserted in the Cerrado biome. The aim of this study was to evaluate the natural diet of a population of M. brasiliense, comparing the consumed food items according to sex, seasonality and body size of individuals. Monthly collections were carried out between September 2018 and August 2019. The individuals collected had their sex identified and the length of the cephalothorax measured. Stomach content was assessed based on the degree of repletion, the method of points and the frequency of occurrence. There was a high frequency of plant material in the stomach contents and a smaller but significant frequency of aquatic insects. There were no significant differences regarding the diet of males and females and between the dry and rainy seasons. It was observed an increase in total insect consumption with the increase in size of males and females of M. brasiliense. A diet preference for Trichoptera was recorded in both sampling periods for males and females. The results obtained confirm an omnivorous diet for the species and suggest that the composition and proportion of items may vary depending on the size of the individuals and the availability of the items in the environment.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212021000100203&tlng=enFeeding habitsfreshwater prawnPaleomonidaeabiotic factors |
| spellingShingle | Barbara R. F. da Cruz Marina C. Cunha Alessandra A. de P. Bueno Giuliano B. Jacobucci Natural diet of Macrobrachium brasiliense (Crustacea, Decapoda) in a Cerrado stream Iheringia: Série Zoologia Feeding habits freshwater prawn Paleomonidae abiotic factors |
| title | Natural diet of Macrobrachium brasiliense (Crustacea, Decapoda) in a Cerrado stream |
| title_full | Natural diet of Macrobrachium brasiliense (Crustacea, Decapoda) in a Cerrado stream |
| title_fullStr | Natural diet of Macrobrachium brasiliense (Crustacea, Decapoda) in a Cerrado stream |
| title_full_unstemmed | Natural diet of Macrobrachium brasiliense (Crustacea, Decapoda) in a Cerrado stream |
| title_short | Natural diet of Macrobrachium brasiliense (Crustacea, Decapoda) in a Cerrado stream |
| title_sort | natural diet of macrobrachium brasiliense crustacea decapoda in a cerrado stream |
| topic | Feeding habits freshwater prawn Paleomonidae abiotic factors |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212021000100203&tlng=en |
| work_keys_str_mv | AT barbararfdacruz naturaldietofmacrobrachiumbrasiliensecrustaceadecapodainacerradostream AT marinaccunha naturaldietofmacrobrachiumbrasiliensecrustaceadecapodainacerradostream AT alessandraadepbueno naturaldietofmacrobrachiumbrasiliensecrustaceadecapodainacerradostream AT giulianobjacobucci naturaldietofmacrobrachiumbrasiliensecrustaceadecapodainacerradostream |