The reproductive behavior and spawning microhabitat of the flagfin shiner, Pteronotropis signipinnis, was described from aquarium observations, instream observations and microhabitat specific seining collections. Based upon aquarium observations, P. signipinnis is a broadcaster and exhibits a spawning clasp. Although spawning was never observed in nature, a high frequency of spawning related behavioral acts was observed in shallow, densely vegetated habitats (“vegetated riffles”). The spatial distribution of males and females with gonads in advanced stages of development was additional indirect evidence that vegetated riffles were an important microhabitat for reproduction. The physical characteristics of vegetated riffles may enhance the males' ability to clasp females, increase the survival of eggs and provide refuge from predation for spawning adults. Behavior related to foraging was frequently observed in “vegetated runs”, indicating that P. signipinnis relies upon different habitat types to complete its life cycle and meet its resource needs.
You have requested a machine translation of selected content from our databases. This functionality is provided solely for your convenience and is in no way intended to replace human translation. Neither BioOne nor the owners and publishers of the content make, and they explicitly disclaim, any express or implied representations or warranties of any kind, including, without limitation, representations and warranties as to the functionality of the translation feature or the accuracy or completeness of the translations.
Translations are not retained in our system. Your use of this feature and the translations is subject to all use restrictions contained in the Terms and Conditions of Use of the BioOne website.
Vol. 143 • No. 1