The Population Biology of Dugesia Tigrina (Platyhelminthes: Turbellaria) in a Thermally Enriched Alberta, Canada Lake

The Population Biology of Dugesia Tigrina (Platyhelminthes: Turbellaria) in a Thermally Enriched Alberta, Canada Lake

The triclad flatworm Dugesia tigrina (Girard) is abundant in Lake Wabamum, a west-central Alberta lake receiving thermal effluent. A 14-month study was carried out to investigate D. tigrina's population ecology and the effect a thermally altered environment might have on Dugesia. Our data suppo...

Description complète

Détails bibliographiques
Publié dans:Ecology. - John Wiley and Sons, Inc.. - 59(1978), 5, Seite 966-975
Auteur principal: Folsom, Todd C. (Auteur)
Autres auteurs: Clifford, Hugh F.
Format: Article en ligne
Langue:English
Publié: 1978
Accès à la collection:Ecology
Sujets:Alberta Dugesia tigrina intraspecific competition life cycle macrophyte harvesting population biology thermal effluent Tricladida Biological sciences Applied sciences plus... Environmental studies Social sciences Physical sciences
LEADER 01000caa a22002652c 4500
001 JST028473299
003 DE-627
005 20240620162648.0
007 cr uuu---uuuuu
008 150324s1978 xx |||||o 00| ||eng c
024 7 |a 10.2307/1938548  |2 doi 
035 |a (DE-627)JST028473299 
035 |a (JST)1938548 
040 |a DE-627  |b ger  |c DE-627  |e rakwb 
041 |a eng 
100 1 |a Folsom, Todd C.  |e verfasserin  |4 aut 
245 1 4 |a The Population Biology of Dugesia Tigrina (Platyhelminthes: Turbellaria) in a Thermally Enriched Alberta, Canada Lake 
264 1 |c 1978 
336 |a Text  |b txt  |2 rdacontent 
337 |a Computermedien  |b c  |2 rdamedia 
338 |a Online-Ressource  |b cr  |2 rdacarrier 
520 |a The triclad flatworm Dugesia tigrina (Girard) is abundant in Lake Wabamum, a west-central Alberta lake receiving thermal effluent. A 14-month study was carried out to investigate D. tigrina's population ecology and the effect a thermally altered environment might have on Dugesia. Our data support the hypothesis that D. tigrina is limited by intraspecific competition for food during and after reproduction. In spring, both the normal water and heated water triclad populations grew rapidly and produced cocoons. Recruitment of young intensified food competition, causing shrinkage and mortality. The spring gain in length and weight was lost through shrinkage of individuals, and numbers of triclads in autumn were similar to prebreeding numbers. Hence the hypothesis is supported for populations in the thermally altered and the normal lake habitats. Triclads from the thermally enriched environment were found to be 2x as fecund as normal lake triclads. Cocoon production was probably increased to some extent by thermal effluent. However, the elevated mortality rate caused by the mechanical harvesting of abundant macrophyte populations in the warm water area, estimated at 1-3x the standing crop of triclads, probably accounts for much of the increased fecundity. 
540 |a Copyright 1978 The Ecological Society of America 
650 4 |a Alberta 
650 4 |a Dugesia tigrina 
650 4 |a intraspecific competition 
650 4 |a life cycle 
650 4 |a macrophyte harvesting 
650 4 |a population biology 
650 4 |a thermal effluent 
650 4 |a Tricladida 
650 4 |a Biological sciences  |x Biology  |x Zoology  |x Entomology  |x Insect biology  |x Insect anatomy  |x Cocoons 
650 4 |a Applied sciences  |x Technology  |x Construction technology  |x Construction materials  |x Bricks 
650 4 |a Biological sciences  |x Biology  |x Botany  |x Marine botany  |x Aquatic plants  |x Macrophytes 
650 4 |a Environmental studies  |x Atmospheric sciences  |x Climatology  |x Seasons 
650 4 |a Social sciences  |x Population studies  |x Mortality 
650 4 |a Biological sciences  |x Agriculture  |x Farming  |x Crop production  |x Crop harvesting 
650 4 |a Biological sciences  |x Ecology  |x Ecological processes  |x Ecological competition  |x Intraspecific competition 
650 4 |a Physical sciences  |x Earth sciences  |x Hydrology  |x Limnology 
650 4 |a Physical sciences  |x Physics  |x Thermodynamics  |x Thermal analysis  |x Temperature  |x Water temperature 
650 4 |a Biological sciences  |x Ecology  |x Population ecology 
655 4 |a research-article 
700 1 |a Clifford, Hugh F.  |e verfasserin  |4 aut 
773 0 8 |i Enthalten in  |t Ecology  |d John Wiley and Sons, Inc.  |g 59(1978), 5, Seite 966-975  |w (DE-627)311927165  |w (DE-600)2010140-5  |x 19399170  |7 nnas 
773 1 8 |g volume:59  |g year:1978  |g number:5  |g pages:966-975 
856 4 0 |u https://www.jstor.org/stable/1938548  |3 Volltext 
856 4 0 |u https://doi.org/10.2307/1938548  |3 Volltext 
912 |a GBV_USEFLAG_A 
912 |a SYSFLAG_A 
912 |a GBV_JST 
912 |a GBV_ILN_11 
912 |a GBV_ILN_20 
912 |a GBV_ILN_22 
912 |a GBV_ILN_24 
912 |a GBV_ILN_31 
912 |a GBV_ILN_39 
912 |a GBV_ILN_40 
912 |a GBV_ILN_60 
912 |a GBV_ILN_62 
912 |a GBV_ILN_63 
912 |a GBV_ILN_65 
912 |a GBV_ILN_69 
912 |a GBV_ILN_70 
912 |a GBV_ILN_90 
912 |a GBV_ILN_100 
912 |a GBV_ILN_101 
912 |a GBV_ILN_110 
912 |a GBV_ILN_120 
912 |a GBV_ILN_285 
912 |a GBV_ILN_374 
912 |a GBV_ILN_702 
912 |a GBV_ILN_2001 
912 |a GBV_ILN_2003 
912 |a GBV_ILN_2005 
912 |a GBV_ILN_2006 
912 |a GBV_ILN_2007 
912 |a GBV_ILN_2008 
912 |a GBV_ILN_2009 
912 |a GBV_ILN_2010 
912 |a GBV_ILN_2011 
912 |a GBV_ILN_2014 
912 |a GBV_ILN_2015 
912 |a GBV_ILN_2018 
912 |a GBV_ILN_2020 
912 |a GBV_ILN_2021 
912 |a GBV_ILN_2026 
912 |a GBV_ILN_2044 
912 |a GBV_ILN_2050 
912 |a GBV_ILN_2056 
912 |a GBV_ILN_2107 
912 |a GBV_ILN_2111 
912 |a GBV_ILN_2190 
912 |a GBV_ILN_2932 
912 |a GBV_ILN_2939 
912 |a GBV_ILN_2942 
912 |a GBV_ILN_2946 
912 |a GBV_ILN_2949 
912 |a GBV_ILN_2950 
912 |a GBV_ILN_2951 
912 |a GBV_ILN_4012 
912 |a GBV_ILN_4027 
912 |a GBV_ILN_4028 
912 |a GBV_ILN_4029 
912 |a GBV_ILN_4035 
912 |a GBV_ILN_4037 
912 |a GBV_ILN_4046 
912 |a GBV_ILN_4112 
912 |a GBV_ILN_4116 
912 |a GBV_ILN_4125 
912 |a GBV_ILN_4126 
912 |a GBV_ILN_4155 
912 |a GBV_ILN_4242 
912 |a GBV_ILN_4249 
912 |a GBV_ILN_4266 
912 |a GBV_ILN_4305 
912 |a GBV_ILN_4306 
912 |a GBV_ILN_4307 
912 |a GBV_ILN_4309 
912 |a GBV_ILN_4310 
912 |a GBV_ILN_4311 
912 |a GBV_ILN_4313 
912 |a GBV_ILN_4314 
912 |a GBV_ILN_4315 
912 |a GBV_ILN_4316 
912 |a GBV_ILN_4317 
912 |a GBV_ILN_4319 
912 |a GBV_ILN_4322 
912 |a GBV_ILN_4323 
912 |a GBV_ILN_4324 
912 |a GBV_ILN_4325 
912 |a GBV_ILN_4335 
912 |a GBV_ILN_4338 
912 |a GBV_ILN_4346 
912 |a GBV_ILN_4367 
912 |a GBV_ILN_4393 
912 |a GBV_ILN_4700 
951 |a AR 
952 |d 59  |j 1978  |e 5  |h 966-975