PDF] Nest defense by deceit in the fathead minnow , PimephMes promelas

Individual male fathead minnows spawn and guard eggs for a period of several weeks during a much longer total breeding season, whereas competitive males, who defend nests adjacent to territorial rivals, turn dark and do not lose wet weight despite losing dry weight. Individual male fathead minnows spawn and guard eggs for a period of several weeks during a much longer total breeding season. Solitary males remain pale and lose both wet weight and dry weight throughout the nesting period, whereas competitive males, who defend nests adjacent to territorial rivals, turn dark and do not lose wet weight despite losing dry weight. A solitary male must contend only with territorial encroachment by females (potential mates and egg predators), but a competitive male must defend the nest against both males and females. A competitive male always attacks female intruders, whereas he initially displays to intruding males. Territorial rivals, though not egg predators, may try to usurp his nest. Successful competitive nest holders may appear more robust than their true condition and thereby prevent eviction by newly reproductive male intruders. Such newcomers preferentially attack residents in relatively poor condition and pale coloration.

Nest defense by deceit in the fathead minnow, Pimephales promelas

PDF) Avoidance of areas marked with a chemical alarm substance by fathead minnows (Pimephales promelas) in a natural habitat

PDF) Avoidance of areas marked with a chemical alarm substance by fathead minnows (Pimephales promelas) in a natural habitat

Long-term effects of an early-life exposure of fathead minnows to sediments containing bitumen. Part I: Survival, deformities, and growth. - ScienceDirect

Maryland Biodiversity - View Thumbnails - Phylum: Chordata - Fathead Minnow (Pimephales promelas)

In ovo exposure of fathead minnow (Pimephales promelas) to selenomethionine via maternal transfer and embryo microinjection: A comparative study - ScienceDirect

Fathead Minnow (Pimephales promelas) · iNaturalist Canada

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PDF) Fathead minnows, Pimephales promelas, learn to recognize northern pike, Esox lucius, as predators on the basis of chemical stimuli from minnows in the pike's diet