Skip to main content

Advertisement

Table 1 Schematic overview of pairing types of Lymnaea stagnalis individuals in five experimental treatments.

From: Costs of receipt and donation of ejaculates in a simultaneous hermaphrodite

Treatment Pairing type Description
  Focal Partner  
Control H H Reciprocal copulation, focals receive and donate.
Sham H H Reciprocal copulation, focals receive and donate.
Receive F H Unilateral copulation, focals restricted to receiving.
Donate H F Unilateral copulation, focals restricted to donating.
Operated F F No copulation, focals neither receive nor donate.
  1. Capital letters denote hermaphrodites (H) and surgically feminized individuals (F). Surgery involves lesioning a branch of the penial nerve (NP1) in snails and removes the motivation to mate as a male (see text for details). Therefore, combinations of H and F result in pairs that can only copulate in one mating role: H as donor and F as recipient. In FF pairs, male function is lacking and copulatory activity is absent. HH pairs denote normally mating functional hermaphrodites.