Fresh-water Shrimps (Crustacea, Decapoda, Natantia) of the Orinoco Basin and the Venezuelan Guayana

Rodríguez, Gilberto

doi:10.2307/1548054

Cited by 40 publications

(27 citation statements)

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“…In the upper Rio Negro, some right bank affluents (Rio Vaupes/Uaupés, Rio Caqueta/Japurá) drain the Colombian relicts of the Guayana Shield, and an interconnection with the Orinoco Basin is made through the Casiquiare Channel. Other basin interconnections would also be possible along the Parima and Pacaraima Mountains (Brazilian-Venezuelan border) and through the inundated areas of the Rupununi, which connect the Essequibo and Cuyuni Rivers with the upper Rio Branco Basin (Rodríguez 1982b).…”

Section: Study Areamentioning

confidence: 99%

“…The records for Colombia were done by Campos (1997) and Rodríguez & Campos (1998) for pseudothelphusid crabs. The composition and distribution of the Venezuelan Guayana decapod fauna is better known: the freshwater shrimps were treated by Rodríguez (1982b), Pereira (1985Pereira ( , 1986Pereira ( , 1991, and Pereira et al (1996); the pseudothelphusid crabs were studied by Rodríguez (1966), Rodríguez & Pereira (1992), Rodríguez & Suárez (1994), and Rodríguez & Campos (1998). There are other contributions mentioning material from French Guiana (Miers 1877), Guyana (De Man 1900, Gordon 1935, Coifmann 1939 and Suriname (Holthuis 1993).…”

Section: Status Of Knowledge Of Freshwater Decapod Crustaceansmentioning

confidence: 99%

“…The main papers suggested for decapod identification according to the taxonomic groups are the following: Atyidae: Hobbs & Hart (1982). Palaemonidae: Holthuis (1951Holthuis ( , 1952Holthuis ( , 1959, Kensley & Walker (1982), López & Pereira (1996), Pereira (1985Pereira ( , 1986, Rodríguez (1980Rodríguez ( , 1982b, Tiefenbacher (1978), Melo (2003b). Pseudothelphusidae: Holthuis (1959), , Rodríguez (1980Rodríguez ( , 1982a, Pretzmann (1972), Rodríguez & Campos (1998), Rodríguez & Pereira (1992), Rodríguez & Suárez (1994), Magalhães & Rodríguez (2002), Magalhães (2003a).…”

Section: Status Of Knowledge Of Freshwater Decapod Crustaceansmentioning

confidence: 99%

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Assessment of the decapod crustacean diversity in the Guayana Shield region aiming at conservation decisions

Magalhães

Pereira

2007

Biota Neotrop.

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Magalhães C. & Pereira, G. Assessment of the decapod crustacean diversity in the Guayana Shield region aiming at conservation decisions. Biota Neotrop. May/Aug 2007 vol. 7, no. 2. http://www.biotaneotropica.org. br/v7n2/pt/abstract?article+bn02007022007. ISSN 1676-0603.The current state of knowledge of freshwater decapod crustacean diversity of the Guayana Shield Region is briefly assessed, based upon information gathered from the scientific literature as well as unpublished data from academic theses, technical reports, and carcinological collections. The decapod fauna of the region is presently known to include 64 species and subspecies within six families and 17 genera. Diversity by countries, basins, and rivers is listed, comments on endemic, rare or threatened species are made, and information about relevant taxonomic literature is presented. Seven priority areas for conservation actions concerning crustacean decapods are suggested and related to the 25 priority areas defined by the Fishes and Freshwater Working Group at the Guayana Shield Conservation Priority Setting Workshop, held at Paramaribo (Suriname) in April 2002.

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Section: Study Areamentioning

confidence: 99%

Section: Status Of Knowledge Of Freshwater Decapod Crustaceansmentioning

confidence: 99%

Section: Status Of Knowledge Of Freshwater Decapod Crustaceansmentioning

confidence: 99%

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Assessment of the decapod crustacean diversity in the Guayana Shield region aiming at conservation decisions

Magalhães

Pereira

2007

Biota Neotrop.

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“…Studies on the horizontal distribution of the Amazon River shrimp and its reproductive activity are mainly limited to riverbeds (Rodríguez, 1982;Valenti et al, 1989;Odinetz-Collart, 1991;Odinetz-Collart and Moreira, 1993;Silva et al, 2002;Vieira, 2003;Santos et al, 2006;Silva et al, 2007;Sampaio et al, 2007;Sampaio et al, 2008;and others). However, the species is often caught in tidal creeks that may or may not connect directly to the rivers.…”

Section: Introductionmentioning

confidence: 99%

Spatial distribution of the amazon river prawn Macrobrachium Amazonicum (Heller, 1862) (Decapoda, Caridea, Palaemonidae) in two perennial creeks of an estuary on the northern coast of Brazil (Guajará Bay, Belém, Pará)

et al. 2011

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Macrobrachium amazonicum is the most frequently consumed freshwater crustacean by river communities of the Amazon. Despite its relative abundance and vast knowledge on the species from data on cultivated specimens, little is known regarding its biology in the natural environment, especially its use of creeks that are strongly influenced by the tide. Specimens of Macrobrachium amazonicum were collected in September 2006 (dry season) and March 2007 (rainy season) from two perennial creeks of the Guajará Bay in the state of Pará (northern Brazil), using traps similar to the matapis used by local fishermen to identify the spatial distribution of the species. Shrimps of all sizes use the tidal creeks in both seasons, including for breeding purposes. The greatest abundance of the species occurred in headwater areas and in the dry season. It is suggested that abundant allochthonous organic matter and the preference for protected areas may explain the abundance and breeding activity of this species in the headwaters of the creeks.Keywords: creek, Macrobrachium, Amazon River prawn, estuary.Distribuição espacial do camarão-da-amazônia -Macrobrachium Amazonicum (Heller, 1862) (Decapoda, Caridea, Palaemonidae) em dois canais perenes de um estuário da costa norte do Brasil (Baía do Guajará -Belém, Pará, Brasil) ResumoMacrobrachium amazonicum é o crustáceo dulcícola mais frequentemente consumido pelas populações ribeirinhas da Amazônia. Entretanto, apesar de sua relativa abundância e vasto conhecimento da espécie a partir de dados de cultivo, pouco se conhece sobre sua biologia no ambiente natural, especialmente quanto à forma de utilização de canais fortemente influenciados pelas marés. Amostras desse camarão foram coletadas em setembro/06 (período seco) e março/07 (período chuvoso), em dois canais perenes da Baía do Guajará, Pará, utilizando armadilhas (matapis) como as utilizadas pelos pescadores locais para identificar a distribuição espacial dos organismos. Os canais de maré são utilizados por camarões de todos os tamanhos nas duas estações do ano, inclusive para a reprodução. A maior abundância de indivíduos da espécie foi encontrada no período seco, nas áreas a montante dos canais . Postula-se que a abundante matéria orgânica alóctone e a busca de locais protegidos podem ser os fatores que explicam a concentração da abundância e da atividade reprodutiva nas áreas a montante dos canais.Palavra-chave: canais de maré, Macrobrachium, camarão-da-amazônia, estuário.

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“…Among these species, the Amazon River prawn Macrobrachium amazonicum (Heller 1862) has remained relatively unknown, although its potential for aquaculture and fisheries is highly rated (Kutty et al 2000, Moraes-Valenti & Valenti 2007. It is widely distributed along the northern and northeastern coasts of South America (Holthuis 1952, Rodríguez 1982, Montoya 2003, and fully limnic inland populations live in the Amazon and Orinoco River basins (Walker 1992, Odinetz Collart & Rabelo 1996, as well as in the upper Parana and Paraguay systems (Pettovello 1996, Bialetzki et al 1997, Magalhães 2000, Hayd & Nakagaki 2002.…”

Section: Introductionmentioning

confidence: 99%

From lecithotrophy to planktotrophy: ontogeny of larval feeding in the Amazon River prawn Macrobrachium amazonicum

Anger¹,

Hayd²

2009

Aquat. Biol.

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During downstream transport from rivers to estuaries, early larval stages of the Amazon River prawn Macrobrachium amazonicum (Heller 1862) are likely exposed to planktonic food limitation. In the laboratory, we studied the effects of presence or absence of food on larval survival, moulting and biomass (dry mass, and content of carbon, hydrogen and nitrogen). Unfed larvae developed successfully from hatching of the Zoea I (Z I) to the third zoeal stage (Z III). Complete absence of starvation effects indicated obligatory lecithotrophy in Z I, while significantly delayed moulting and reduced biomass in unfed Z II proved that this stage is facultatively lecithotrophic. Although unfed Z III did not develop any further (obligatory planktotrophy), they still showed a high endotrophic potential, surviving for up to another 10 d (in total 2 wk from hatching), and utilizing about two-thirds of their initial biomass. Dramatically decreasing C:N ratios in unfed larvae suggest an almost complete metabolic degradation of internal lipid stores (visible as fat droplets in the hepatopancreas region), but little protein mobilization. Larvae obtained from 2 different females differed significantly in biomass at hatching and, correspondingly, also in maximum survival time, delay of moulting to the Z III and average rates of biomass utilization. In conclusion, the early larval stages of M. amazonicum depend very little on food, shifting from completely non-feeding behaviour (Z I) through facultative lecithotrophy (Z II), to planktotrophy (later stages). This ontogenetic pattern may be an adaptation to initial food limitation associated with larval export from limnic to estuarine environments.

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Fresh-water Shrimps (Crustacea, Decapoda, Natantia) of the Orinoco Basin and the Venezuelan Guayana

Cited by 40 publications

References 0 publications

Assessment of the decapod crustacean diversity in the Guayana Shield region aiming at conservation decisions

Assessment of the decapod crustacean diversity in the Guayana Shield region aiming at conservation decisions

Spatial distribution of the amazon river prawn Macrobrachium Amazonicum (Heller, 1862) (Decapoda, Caridea, Palaemonidae) in two perennial creeks of an estuary on the northern coast of Brazil (Guajará Bay, Belém, Pará)

From lecithotrophy to planktotrophy: ontogeny of larval feeding in the Amazon River prawn Macrobrachium amazonicum

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