Female mantle tissue and conglutinates can mimic insect larvae and pupae, leeches, flatworms, and even other fish, all of which seem to attract host fish closer for possible infestation by glochidia (Parmalee & Bogan 1998).
Both of these species are long-term brooders that use darters (Percidae) as hosts and release benthic conglutinates in the early spring (Barnhart et al., 2008).
Gravid animals were identified as those that had gills swollen with eggs, glochidia or conglutinates or held conglutinates beneath a swollen posterior mantle.
In 1989, we were not able to quantify the percentage of gravid females because they aborted conglutinates (i.e., packets of glochidia) during transfer from river to laboratory.
Lampsilines have evolved morphological adaptations to more efficiently contact their hosts, including mantle displays and conglutinates (packages of glochidia bound within a mucous matrix).