Combined effect of ammonia and nitrite for Macrobrachium amazonicum (Heller, 1862) and Macrobrachium rosenbergii (De man, 1879) post-larvae

Aquaculture ◽  
2022 ◽  
pp. 737880
Author(s):  
Claudia Caramelo Brazão ◽  
Rafael Ortiz Kracizy ◽  
Fabrício Martins Dutra ◽  
Matheus Coelho Gonçalves Rodrigues ◽  
Eduardo Luis Cupertino Ballester
2018 ◽  
Vol 70 (5) ◽  
pp. 1539-1546 ◽  
Author(s):  
M.A.S. Silva ◽  
M.E. Almeida Neto ◽  
B.O. Ramiro ◽  
I.T.F. Santos ◽  
R.R. Guerra

ABSTRACT This study aimed to describe the Macrobrachium rosenbergii hepatopancreas histomorphology. The hepatopancreas is constituted by a set of blind end tubules, divided into proximal, middle, and distal regions, with the epithelium formed by E, F, B, R, and M cells differently of other species. Measurements of the length and width of the tubules were 419.64+69.09µm and 117.42+16.99µm, respectively. The percentage of each cell type per region was: proximal region (40%B, 20%F, 6.7%M, 33.3%R), middle region (45.4%B, 18.2%F, 9.1%M, and 27.3%R) and distal region (36.4%E, 27.2%B, 18.2%F, 9.1%M, 9.1%R). Cell B that stores glycogen and lipids, is the most commonly found cell in proximal and middle regions. In the distal region, the E, responsible for the mitosis, is the most prominent. M, responsible by nutrient storage, is numerically constant among the portions differently in the Macrobrachium amazonicum. The study for the first time also suggests that in addition to digestive enzymes, the F cell produces protective mucus. The present study generated for the first time a morphometric profile of M. rosenbergii hepatopancreas, demonstrating differences from other species, and can be an important tool for new studies in nutrition, reproduction, and production with the species.


2020 ◽  
Vol 9 (3) ◽  
pp. 683
Author(s):  
Yuri Vinicius De Andrade Lopes ◽  
Inaiê Gomes Flores ◽  
Jerônimo Vieira Dantas Filho

Objetivou-se analisar os recursos bibliográficos referente aos camarões Macrobrachium rosenbergii (De Man, 1879) e Macrobrachium amazonicum (Heller, 1862), na perspectiva de suas sobrevivências no meio natural, as demandas comerciais e os problemas causados pela introdução da espécie exótica M. rosenbergii na Amazônia. Apesar da abundância de espécies nativas com excelente potencial pesqueiro e boa aceitação comercial como M.  amazonicum, espécies exóticas a exemplo de M. rosenbergii têm sido introduzidas para fins comerciais de cultivos aquícolas, provocando riscos ecológicos, sanitários, ambientais e de mercado às espécies nativas. Embora sejam poucas as informações que definam os impactos aos camarões nativos, as diversas doenças e o potencial reprodutivo, são um dos componentes de maior importância a causar prejuízos para as espécies nativas.


2012 ◽  
Vol 47 (1) ◽  
pp. 93-98 ◽  
Author(s):  
M Begum ◽  
MA Khaleque ◽  
MA Wahed ◽  
F Hafiz

With a view to get a pen picture about the trend and extent of quality changes and as well as shelf life of the head off and head on shrimp (Macrobrachium rosenbergii, De Man, 1879), the present study have been carried out . Quality changes have been measured by application of sensory score evaluation and changes in chemical indices such as Total Volatile Nitrogen (TVN) value, pH and level of moisture at different time interval and Total Bacterial Count (TBC) at 15°C during the study period. The results of the sensory score evaluation indicates that the shrimp quality decreased to the limits of acceptability at 12th days of ice storage. The head off shrimp kept slight better than corresponding head on shrimps. The bacterial counts determined at 15°C have been found to increase from 103 - 107 and 104 -108 cfu/gm for head off and head on shrimp respectively at the limit of acceptability. The moisture level increased from initial 78.85gm% to final 83.80gm% (head off) & 79.0gm% to 84.0gm% (head on) and pH value increases from 7.1 to 8.1 during the whole period of iced preservation . Both head off and head on shrimp remained in acceptable condition for up to 12 and 14 days of storage respectively while the quality of fish deteriorates and become unacceptable. The bacterial count corresponding to unacceptable condition ranges from 108-109 cfu/gm fish sample. The TVN value corresponding to rejection condition were 45-50mg N/100gm fish sample. DOI: http://dx.doi.org/10.3329/bjsir.v47i1.10731 Bangladesh J. Sci. Ind. Res. 47(1), 93-98, 2012


2017 ◽  
Vol 49 (1) ◽  
pp. 81-92 ◽  
Author(s):  
Ranjit Kumar Nadella ◽  
Raman Ram Prakash ◽  
Gyanaranjan Dash ◽  
Sreenath Kannanchery Ramanathan ◽  
Lalitha Velayudhan Kuttanappilly ◽  
...  

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