Macrobrachium amazonicum (Heller, ). AphiaID. (urn:lsid: :taxname). Classification. Biota; Animalia. Pupil of a Macrobrachium amazonicum (freshwater shrimp). Alex H. Griman. Affiliation: Alex Kawazaki Photography São Paulo, Brazil. Technique. Macrobrachium amazonicum — Overview. Amazon River Media. Image of Macrobrachium amazonicum. Macrobrachium amazonicum Unreviewed.

Author: Shakar Merr
Country: Nicaragua
Language: English (Spanish)
Genre: Spiritual
Published (Last): 14 May 2011
Pages: 78
PDF File Size: 18.96 Mb
ePub File Size: 2.10 Mb
ISBN: 949-4-24124-699-7
Downloads: 55392
Price: Free* [*Free Regsitration Required]
Uploader: Fejar

Each group presents a specific growth pattern on body relationships, demonstrated by the differences in the allometric growth constant.

Our results indicated that the natural male population of M. This oversupply of food also ends up attracting prawns, which are usually used as bait, especially amaxonicum catch silver croaker Plagioscion squamosissimus Heckel, Thus, the passage from one morphotype to another in a natural environment could occur through a single molt.

Fecundity and fertility of Macrobrachium amazonicum (Crustacea, Palaemonidae).

Maria Lucia Negreiros Fransozo and macrobracchium anonymous reviewer for their extremely constructive comments on an earlier version of this manuscript; and to Dr. Knowledge of the life history of the different populations of the species remains fragmentary Anger et al.


Studies of natural populations of M. Reproductive and morphometric traits of Macrobrachium amazonicum Decapoda: The principal component 1 and 2 PC1 and PC2 explained most of the variation RCL ranged from While shrimps from estuarine and Amazonian habitats have been studied in great detail, very little is known about hololimnetic inland populations. The collection site was located downstream of the reservoir of Ibitinga Hydroelectric Power Plant, in a lotic environment with a sandy bottom and marginal vegetation consisting of grasses Cynodondactylon L.

Gonadal structure analysis of Macrobrachium amazonicum Heller, from a wild population: The highest number of eggs observed individually per hatching was 2, The trap was placed near the macrophytes at depths of meters and remained at each site for 30 minutes. Population structure of pond-raised Macrobrachium amazonicum with different stocking and harvesting strategies. In summary, our data show biologically relevant differences in life-history traits of shrimps from the Pantanal compared to M.

Morphotypes Variable N mean s. In total, shrimps were examined males; females, of these ovigerous. Prawns of the CC morphotype had a CL of According to these authors, differences in reproductive systems indicate that long vicariant separation has indeed allowed for diversification in different catchment areas, suggesting that M.


Results Carapace length ranged from 4. These morphotypes differ in cheliped morphology and in certain morphometric relationships.

All these differences persist also in long-term cultures maintained under constant conditions. Among macrobracihum ovigerous M. Acta Biologica Venezuelica, vol. In contrast, Vergamini et al.

Japanese Journal of Ecology, vol. As for fecundity by weight classes, the lowest number of eggs observed was and the highest, 1, Freshwater prawns of the genus Macrobrachium Bate, Crustacea: Consequently, we could determine which of these initial variables has more influence on the differentiation of possible morphological categories macrobrachiium.

Culture of the Amazon River Prawn Macrobrachium amazonicum.

Macrobrachium amazonicum – Wikispecies

CL, with an estimated size at onset of morphological sexual maturity of 8. Biology Ocurrence of male morphotypes of Macrobrachium amazonicum Caridea, Palaemonidae in macrobrachimu population with an entirely freshwater life cycle.

Effect of density on population development in the Amazon River prawn Macrobrachium amazonicum.