Reproductive success of the male lumpfish (Cyclopterus lumpus L.) (Pisces: Cyclopteridae): evidence against female mate choice

Characteristics of male lumpfish (Cyclopterus lumpus) and features of their nests were examined as potential factors affecting male mating success. The number of eggs guarded by a male was not correlated with male length. Nest location variables, i.e., depth, distance offshore, and distance to the nearest male, were not related to mating success. Nest topography and degree of nest concealment were also not significant factors influencing male reproductive success. Multiple regression analysis revealed that no combination of factors could significantly explain the variation in male mating success. The hatching success of an egg mass was not predictable on the basis of the size of the guarding male. Desertion and abandonment of eggs occurred among males regardless of size. Hatching success of eggs was not associated with any of the nest features measured. Most egg masses hatched regardless of male characteristics or nest features. These factors suggest that mate choice by females is not an important factor in male reproductive success.