Intraspecific competition of .i.Glyptotendipes paripes./i. (Diptera: Chironomidae) larvae under laboratory conditions

0328076 - BC 2010 RIV GB eng J - Journal Article
Frouz, Jan - Lobinske, R.J. - Ali, A.
Intraspecific competition of Glyptotendipes paripes (Diptera: Chironomidae) larvae under laboratory conditions.
Aquatic Ecology. Roč. 43, č. 2 (2009), s. 487-500. ISSN 1386-2588. E-ISSN 1573-5125
Institutional research plan: CEZ:AV0Z60660521; CEZ:AV0Z6066911
Keywords : food availability * Glyptotendipes paripes * larval density
Subject RIV: EH - Ecology, Behaviour
Impact factor: 1.549, year: 2009

Glyptotendipes paripes larvae were reared in wells of tissue culture plates, in groups of 2, 4, 8, 16, and 32 (representing densities of about 1,300, 2,600, 5,200, 10,400, and 20,800 larvae per m², respectively). Larval groups were supplied with one of two concentrations (low or high) of food and larvae were individually observed to eventuate the effects of density on mortality, growth, development, behavior, and adult body size. Increased larval densities resulted in higher mortality, as well as slower larval growth and development. The distribution of developmental time became flatter at higher density, with a wider range of values, or even became bimodal. This was a consequence of the most rapidly developing individuals at higher densities emerging as adults sooner than the fastest developing individuals at lower densities, although overall mean developmental time was longer at higher densities.
Permanent Link: http://hdl.handle.net/11104/0005411