Effects of temperature, photoperiod, and substrate on the maturation and reproductive behavior of the Topeka shiner (Notropis topeka)

Witte, C.C.

doi:10.32469/10355/5779

Cited by 1 publication

(1 citation statement)

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“…Territorial males also exhibited one or more of three behaviours, 'figure 8', 'charge' and 'return' (described in Witte 2008), the frequencies of occurrence of which we recorded. However, a correlation analysis determined that the occurrence frequency of the charge behaviour positively correlated with that of both the return (r = 0.757, N = 20, P < 0.001) and figure 8 behaviours (r = 0.738, N = 20, P < 0.001), and therefore only the charge behaviour data were used in subsequent analyses.…”

Section: Fish Observationsmentioning

confidence: 81%

Substrate choice of territorial male Topeka shiners (Notropis topeka) in the absence of sunfish (Lepomissp.)

Witte

Wildhaber

Arab

et al. 2009

Ecology of Freshwater Fish

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Topeka shiners (Notropis topeka), an endangered minnow species, typically spawn on or around breeding Lepomis sunfish (Centrarchidae) nests. Why spawning Topeka shiners are attracted to these nests is unclear, but having the nesting sunfish provide shiner eggs with improved aeration, a lessening of siltation, and protection from egg predators are possibilities. We tested the substrate utilisation of Topeka shiners in outdoor tanks in the absence of sunfish to determine the shiner's fundamental choice. Shiners were provided with substrate patches of cleaned sand, small gravel, large gravel, and small cobble, and the bare floor of the tank. The substrate above which a male shiner established his territory was used as evidence of choice. A statistically significant choice for sand substrates was demonstrated. This fundamental choice might influence which sunfish nests Topeka shiners use, given that nest substrate characteristics differ both between sunfish species and within species by spawning site location.

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Section: Fish Observationsmentioning

confidence: 81%