IMIS | Lifewatch regional portal

You are here


[ report an error in this record ]basket (0): add | show Print this page

Spatial and temporal distribution of harpacticoid copepods in Mondego estuary
Gonçalves, A.M.M.; De Troch, M.; Marques, S.C.; Pardal, M.A.; Azeiteiro, U.M. (2010). Spatial and temporal distribution of harpacticoid copepods in Mondego estuary. J. Mar. Biol. Ass. U.K. 90(7): 1279-1290.
In: Journal of the Marine Biological Association of the United Kingdom. Cambridge University Press/Marine Biological Association of the United Kingdom: Cambridge. ISSN 0025-3154; e-ISSN 1469-7769, more
Peer reviewed article  

Available in  Authors 
    VLIZ: Open Repository 215064 [ OMA ]

    Distribution > Temporal distribution
    Spatial variations
    Temporal variations > Periodic variations > Seasonal variations
    Water bodies > Coastal waters > Coastal landforms > Coastal inlets > Estuaries
    Copepoda [WoRMS]; Harpacticoida [WoRMS]
    ANE, Portugal, Mondego Estuary [Marine Regions]
    Brackish water
Author keywords
    Harpacticoida seasonal and spatial variation; hydrological parameters; estuary

Authors  Top 
  • Gonçalves, A.M.M.
  • De Troch, M., more
  • Marques, S.C.
  • Pardal, M.A.
  • Azeiteiro, U.M.

    Seasonal and spatial variations in the composition and relative contribution of the harpacticoid species in the Mondego estuary (western Portugal) were studied based on a monthly sampling along a salinity gradient. These benthic harpacticoids were collected in the water column by means of a 63-µm plankton net. The influence of hydrological parameters (temperature, salinity, oxygen dissolved concentration, pH, turbidity, chlorophyll-a, total suspended solids and nutrient concentrations) was analysed by means of a redundancy data analysis. In addition, this is the first study to provide a checklist of benthic harpacticoids from this estuary. In total, 13 species plus six species not yet identified but known to belong to the genus Canuella, Microsetella, Ectinosoma, Mesochra, Harpacticus and Parapseudoleptomesochra were identified. Copepodites and adults of Euterpina acutifrons and Paronychocamptus nanus were most abundant in this harpacticoid community. While P. nanus dominated in winter and spring at upstream stations, E. acutifrons dominated more downstream. Although this species occurred along the whole salinity gradient, its highest abundances were found in the north arm of the estuary, except in autumn. This distribution may be due to the adaptability of E. acutifrons to different environments and the intermediate position between marine and estuarine conditions assigned to this species. Paraleptastacus cfr. spinicauda showed a relative occurrence of 5–10% in all stations, except at the mouth of the estuary (M). Tachidius discipes was found in low densities in Mondego estuary in spite of the large numbers of copepodites of this species in the southern arm, characterized by a high level of total suspended solids. The northern arm of the estuary was characterized by a higher numerical occurrence of harpacticoid organisms throughout the study years, with the higher densities towards the freshwater part (upstream areas). Canuella sp., Ectinosoma sp. (copepodite), Ectinosoma melaniceps, Leptocaris brevicornis, Phyllognathopus viguieri, Microsetella norvegica (copepodite) and Macrosetella gracilis (copepodite) were considered rare species. Nonetheless harpacticoid species were represented by a higher number of adults in the northern arm, and juveniles in the southern arm.

All data in the Integrated Marine Information System (IMIS) is subject to the VLIZ privacy policy Top | Authors