Gallagher, Colin P; Dick, Terry A (2011): Fork lengths, stomach contents and parasites of ninespine stickleback and arctic char in Iqalugaajuruluit Lake, Canada [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.810090, Supplement to: Gallagher, CP; Dick, TA (2011): Ecological characteristics of ninespine stickleback Pungitius pungitius from southern Baffin Island, Canada. Ecology of Freshwater Fish, 20(4), 646-655, https://doi.org/10.1111/j.1600-0633.2011.00516.x
Always quote citation above when using data! You can download the citation in several formats below.
Abstract:
Stable d13C and d15N isotopes, diet and parasites demonstrated that the prey consumed by ninespine stickleback Pungitius pungitius in a small lake on Baffin Island changed during the summer and also revealed intraspecific variation in their ecological niche. In July, there were differences in the diets of male and female ninespine stickleback as indicated by the stable isotopes, differences corroborated by the data on diet composition and the parasite fauna. Differences suggested that the sexes occupied different habitats during spawning. During July, females utilise the shallower littoral areas consuming zooplankton and benthic organisms, while males occupy deeper areas of the littoral zone feeding mainly on pelagic zooplankton. Parasite data support these observations as males had higher infections of copepod-transmitted parasites than females. There appeared to be no segregation of resources between males and females in late August, although the diet of both male and female ninespine stickleback shifted towards more benthic organisms, compared with July. Differences in d13C isotope, diet composition and infections of co-occurring parasites demonstrated that sympatric ninespine stickleback and Arctic char Salvelinus alpinus captured in the littoral zone occupied separate niches. Ninespine stickleback preyed mainly on zooplankton and chironomids, while Arctic char consumed a greater variety of prey items, including zooplankton and larger-sized prey such as insects and ninespine stickleback. The multifaceted approach improved our understanding of the trophic ecology of ninespine stickleback in southern Baffin Island and quantified resource use and dietary overlap with Arctic char.
Project(s):
Coverage:
Latitude: 63.688000 * Longitude: -68.377000
Date/Time Start: 2004-07-01T00:00:00 * Date/Time End: 2004-08-30T00:00:00
Event(s):
Comment:
Data extracted in the frame of a joint ICSTI/PANGAEA IPY effort, see http://doi.pangaea.de/10.1594/PANGAEA.150150
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
3 datasets
Download Data
Datasets listed in this publication series
- Gallagher, CP; Dick, TA (2011): (Table 2) Frequency and occurrence of diet items in stomachs of ninespine stickleback (P. pungitius) and arctic char (S. alpinus) in Iqalugaajuruluit Lake. https://doi.org/10.1594/PANGAEA.810088
- Gallagher, CP; Dick, TA (2011): (Table 3) Parasite prevalence and intensity in ninespine stickleback (Pungitius pungitius) and arctic char (Salvelinus alpinus) in Iqalugaajuruluit Lake. https://doi.org/10.1594/PANGAEA.810089
- Gallagher, CP; Dick, TA (2011): (Table 1) Fork lengths among age classes of ninespine stickleback (Pungitius pungitius) in Iqalugaajuruluit Lake. https://doi.org/10.1594/PANGAEA.810087