Trophic ecology of the freshwater prawn, Pseudopalaemon bouvieri (Decapoda: Palaemonidae) in Northeastern Argentina: with remarks on population structure
Freshwater decapod crustaceans are important components of food webs in these environments, but little is known about the diet of species that live in tropical waters. We studied the feeding ecology of the prawn Pseudopalaemon bouvieri and its population structure in two different areas with six lag...
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| Format: | Article |
| Language: | English |
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Vicerractoría Investigación
2012-03-01
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| Series: | Revista de Biología Tropical |
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| Online Access: | http://www.scielo.sa.cr/scielo.php?script=sci_arttext&pid=S0034-77442012000100021&lng=en&tlng=en |
| _version_ | 1797708800337117184 |
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| author | Romina Patricia Carnevali Pablo Agustín Collins Alicia S. Guadalupe Poi de Neiff |
| author_facet | Romina Patricia Carnevali Pablo Agustín Collins Alicia S. Guadalupe Poi de Neiff |
| author_sort | Romina Patricia Carnevali |
| collection | DOAJ |
| description | Freshwater decapod crustaceans are important components of food webs in these environments, but little is known about the diet of species that live in tropical waters. We studied the feeding ecology of the prawn Pseudopalaemon bouvieri and its population structure in two different areas with six lagoons, with a different composition and abundance of aquatic macrophytes. At each site of macrophytes banks, 18 prawns sample was collected with a hand net (1mm mesh size) from 1m². In the laboratory, prawns cephalothorax length was measured, sex determined, and a total of 208 stomachs were examined for food items. Our results showed that the population abundance varied between 10 ind/m² and 1 411 ind/m². The cephalothorax length ranged between 6mm and 21mm, and the male:female ratio varied between 0.3 and 1.0, with a higher proportion of ovigerous females (21%) in area one than area two. P. bouvieri is omnivorous, and its diet was principally based on algae, plant remains, Protozoa, Rotifera, Oligochaeta, Crustacea, Insecta, detritus and other items. The analysis of the stomach content did not reveal any significant difference in the diet between juveniles and adults, and males and females of both areas consumed a similar diet (Kruskal-Wallis test p=0.8273). We concluded that the dietary items consumed by prawns and the niche breadth were similar between the two areas, although the proportion of items consumed varied between lagoons of both areas. The density of P. bouvieri was different between areas, but the size of cephalothorax (CL) was similar. |
| first_indexed | 2024-03-12T06:27:58Z |
| format | Article |
| id | doaj.art-5b234e3ae3ff4728ba2c8c4e1ad99288 |
| institution | Directory Open Access Journal |
| issn | 0034-7744 |
| language | English |
| last_indexed | 2024-03-12T06:27:58Z |
| publishDate | 2012-03-01 |
| publisher | Vicerractoría Investigación |
| record_format | Article |
| series | Revista de Biología Tropical |
| spelling | doaj.art-5b234e3ae3ff4728ba2c8c4e1ad992882023-09-03T01:48:00ZengVicerractoría InvestigaciónRevista de Biología Tropical0034-77442012-03-01601305316S0034-77442012000100021Trophic ecology of the freshwater prawn, Pseudopalaemon bouvieri (Decapoda: Palaemonidae) in Northeastern Argentina: with remarks on population structureRomina Patricia Carnevali0Pablo Agustín Collins1Alicia S. Guadalupe Poi de Neiff2Centro de Ecología Aplicada del Litoral (CECOAL-CONICET)Facultad de Bioquímica y Ciencias Biológicas (INALI-CONICET-UNL)Universidad Nacional del Nordeste (UNNE)Freshwater decapod crustaceans are important components of food webs in these environments, but little is known about the diet of species that live in tropical waters. We studied the feeding ecology of the prawn Pseudopalaemon bouvieri and its population structure in two different areas with six lagoons, with a different composition and abundance of aquatic macrophytes. At each site of macrophytes banks, 18 prawns sample was collected with a hand net (1mm mesh size) from 1m². In the laboratory, prawns cephalothorax length was measured, sex determined, and a total of 208 stomachs were examined for food items. Our results showed that the population abundance varied between 10 ind/m² and 1 411 ind/m². The cephalothorax length ranged between 6mm and 21mm, and the male:female ratio varied between 0.3 and 1.0, with a higher proportion of ovigerous females (21%) in area one than area two. P. bouvieri is omnivorous, and its diet was principally based on algae, plant remains, Protozoa, Rotifera, Oligochaeta, Crustacea, Insecta, detritus and other items. The analysis of the stomach content did not reveal any significant difference in the diet between juveniles and adults, and males and females of both areas consumed a similar diet (Kruskal-Wallis test p=0.8273). We concluded that the dietary items consumed by prawns and the niche breadth were similar between the two areas, although the proportion of items consumed varied between lagoons of both areas. The density of P. bouvieri was different between areas, but the size of cephalothorax (CL) was similar.http://www.scielo.sa.cr/scielo.php?script=sci_arttext&pid=S0034-77442012000100021&lng=en&tlng=enecología de la alimentaciónomnívorosproporción sexualdensidad de camaronesCrustacea |
| spellingShingle | Romina Patricia Carnevali Pablo Agustín Collins Alicia S. Guadalupe Poi de Neiff Trophic ecology of the freshwater prawn, Pseudopalaemon bouvieri (Decapoda: Palaemonidae) in Northeastern Argentina: with remarks on population structure Revista de Biología Tropical ecología de la alimentación omnívoros proporción sexual densidad de camarones Crustacea |
| title | Trophic ecology of the freshwater prawn, Pseudopalaemon bouvieri (Decapoda: Palaemonidae) in Northeastern Argentina: with remarks on population structure |
| title_full | Trophic ecology of the freshwater prawn, Pseudopalaemon bouvieri (Decapoda: Palaemonidae) in Northeastern Argentina: with remarks on population structure |
| title_fullStr | Trophic ecology of the freshwater prawn, Pseudopalaemon bouvieri (Decapoda: Palaemonidae) in Northeastern Argentina: with remarks on population structure |
| title_full_unstemmed | Trophic ecology of the freshwater prawn, Pseudopalaemon bouvieri (Decapoda: Palaemonidae) in Northeastern Argentina: with remarks on population structure |
| title_short | Trophic ecology of the freshwater prawn, Pseudopalaemon bouvieri (Decapoda: Palaemonidae) in Northeastern Argentina: with remarks on population structure |
| title_sort | trophic ecology of the freshwater prawn pseudopalaemon bouvieri decapoda palaemonidae in northeastern argentina with remarks on population structure |
| topic | ecología de la alimentación omnívoros proporción sexual densidad de camarones Crustacea |
| url | http://www.scielo.sa.cr/scielo.php?script=sci_arttext&pid=S0034-77442012000100021&lng=en&tlng=en |
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