Scheldt species source details
Nilssen, J.P. & S.B. Waervagen. (2000). Superficial ecosystem similarities vs. autecological stripping: the 'twin species' Mesocyclops leuckarti (Claus) and Thermocyclops oithonoides (Sars) - seasonal habitat utilisation and life history traits. Journal of Limnology 59(2):79-102.
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Nilssen, J.P. & S.B. Waervagen
2000
Superficial ecosystem similarities vs. autecological stripping: the 'twin species' Mesocyclops leuckarti (Claus) and Thermocyclops oithonoides (Sars) - seasonal habitat utilisation and life history traits.
Journal of Limnology
59(2):79-102.
Publication
Available in Wilson Copepod Library (non-digital)
Available for editors 
Mesocyclops leuckarti (Claus, 1857) represented as Mesocyclops (Mesocyclops) leuckarti (Claus, 1857) represented as Mesocyclops (Mesocyclops) leuckarti leuckarti (Claus, 1857) (additional source)
Thermocyclops oithonoides (Sars G.O., 1863) (additional source)
Thermocyclops oithonoides (Sars G.O., 1863) (additional source)