An Assessment of Decapod Crustaceans (Crabs and Shrimps) in Freshwater Riverine Systems across Watersheds of South-Central Guyana

Chetwynd Osborne¹

Section:Research Paper, Product Type: Journal-Paper
Vol.8 , Issue.6 , pp.51-56, Dec-2021

Online published on Dec 31, 2021

Copyright © Chetwynd Osborne . This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
 

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Abstract :
Areas across South-Central Guyana are very diverse and have the potential to sustain freshwater groups of vertebrates and invertebrates even though these areas are prone to major gold mining activities which have major impacts on the biodiversity both on land and in water. Some of the areas surveyed comprised of water bodies that were fully mined out and groups such as fishes, amphibians, insects, mollusks and crustaceans were the most representative animals. The knowledge of freshwater shrimps and crabs from Guyana is poor; hence the importance of this survey to identify the physicochemical parameters that serve as the best predictors of the density of crab and shrimps and examine the diversity trends using taxa abundance of crabs and shrimps. Water temperature (?) and dissolved oxygen (mg/l) seemed to be the best physicochemical parameters as it relates to predicting crustacean density and distribution across sites. River locality sites seem to have a stronger effect on crustacean community structure as compared to other surveyed localities (creek and waterfall), possibly indicating more suitable conditions within these sites. The number of five species of shrimps and four species of crabs was normal if we consider the range of area sampled.

Key-Words / Index Term :
Crab, Shrimp, Freshwater, Watershed, Biodiversity

References :
[1] C. Magalhães, G. Rodríguez, “The Systematic and Biogeographical Status of Fredius reflexifrons (Ortmann, 1897) and Fredius fittkaui (Bott, 1967) (Crustacea: Brachyura: Pseudothelphusidae) from the Amazon and Atlantic Guianas River Basins,” Acta Amazonica, Vol.32, Issue.4, pp.677-689, 2002.
[2] B. Kensley, I. Walker, “Palaemonidae Shrimp from the Amazon Basin (Crustacea: Decapoda: Natantia),” Smithsonian Contribution to Zoology, Vol.362, pp.1-28, 1982.
[3] M.R. Gadekar, R.N. Gonte, V.K. Paithankar, Y.B. Sangale, N.P. Yeola, “Review on River Water Quality Designation,” International Journal of Emerging Technology and Advanced Engineering, Vol. 2, Issue.9, 2012.
[4] R. Gupta, K. Tatu, L. Christian, D. Joshi, R.D. Kamboj, “Seasonal Assessment of Some Water Quality Parameters for Estuarine and Riverine Zones of Narmada River, Gujarat,” International Journal of Scientific Research in Biological Sciences, Vol. 5, Issue.5, pp.42-51, 2018.
[5] S.J. Vyas, S.P. Tank, R.P. Bhatt, M.M. Jani, “Physico-Chemical Study of Sonrakh River in Junagadh City Gujarat,” International Journal of Scientific Research in Biological Sciences, Vol. 5, Issue.6, pp.89-95, 2018.
[6] J. Heino, “Biodiversity of Aquatic Insects: Spatial Gradients and Environmental Correlates of Assemblage-Level Measures at Large Scales,” Freshwater Reviews, Vol.2, Issue.1, pp.1-29, 2009.
[7] P. Collins, V. Willner, F. Giri, “Predation in Organisms,” Springer Publication, Germany, pp. 59-86, 2007.
[8] M. Rinderhagen, J. Ritterhoff, G.P. Zauke, “Biomonitoring of Polluted Water – Reviews and Actual Topics,” Trans Tech Publications-Scitech Publications, Switzerland, pp. 161-194, 2000.
[9] A. Gelman, “Scaling Regression Inputs by Dividing by Two Standard Deviations,” Statistics in Medicine, Vol.27, pp.2865-2873, 2008.
[10] M.B. Hooten, N.T. Hobbs, “A Guide to Bayesian Model Selection for Ecologists,” Ecological Society of America, Vol.85, Issue.1, pp.3-28, 2015.
[11] R. McElreath, “Statistical Rethinking: A Bayesian Course with Examples in R and STAN,” CRC Press Publications, Germany, pp. 407-436, 2020.
[12] M.A. Ram, T. Caughlin, A. Roopsind, “Active Restoration Leads to Rapid Recovery of Aboveground Biomass but Limited Recovery of Fish Diversity in Planted Mangrove Forests of the North Brazil Shelf,” The Journal of the Society of Ecological Restoration, Vol.29, Issue.5, pp.1-35, 2021.
[13] D. Makowski, M.S. Ben-Shachar, S.H.A. Chen, D. Lüdecke, “Indices of Effect Existence and Significance in the Bayesian Framework,” Frontiers in Psychology, Vol.10, Issue.2767, pp.1-14, 2019.
[14] C. Magalhães, “Manual de identificação dos Crustáceos Decápodos de água doce do Brasil,” Edições Loyola, Brasil, pp. 143-287, 2003.
C. Magalhães, “Identification Manual of Brazilian Freshwater Decapod Crustaceans,” Loyola Editions, Brasil, pp. 143-287, 2003.
[15] S. Wang, P. Xie, H. Geng, “The Relative Importance of Physicochemical Factors and Crustacean Zooplankton as Determinants of Rotifer Density and Species Distribution in Lakes Adjacent to the Yangtze River, China,” Limnologica, Vol.40, pp.1-7, 2010.
[16] S. Ferrier, A. Guisan, “Spatial Modelling of Biodiversity at the Community Level,” Journal of Applied Ecology, Vol.43, pp.393-404, 2006.