Gyrodactylus eucaliae n. sp. (Trematoda: Monogenea) from the Brook Stickleback, Eucalia inconstans

Gyrodactylus eucaliae n. sp. (Trematoda: Monogenea) from the brook stickleback, Eucalia inconstans.

Gyrodactylus eyipayipi sp. n. (Monogenea: Gyrodactylidae) from Syngnathus acus (Syngnathidae) from South Africa.

Gyrodactylus eyipayipi sp. n. is described from the skin, gills, flute and male brood pouch of captive specimens of the greater pipefish Syngnathus acus L., collected for and maintained at the Two Oceans Aquarium in Cape Town, South Africa. It is the first marine Gyrodactylus species reported from the African continent. The new species is compared to the three known Gyrodactylus species affecti...

Watershed characteristics shape the landscape genetics of brook stickleback (Culaea inconstans) in shallow prairie lakes

Investigating the consequences of landscape features on population genetic patterns is increasingly important to elucidate the ecological factors governing connectivity between populations and predicting the evolutionary consequences of landscapes. Small prairie lakes in Alberta, Canada, and the brook stickleback (Culaea inconstans) that inhabit them, provide a unique aquatic system whereby pop...

Diversifying and correlational selection on behavior toward conspecific and heterospecific competitors in brook stickleback (Culaea inconstans)

Behaviors toward heterospecifics and conspecifics may be correlated because of shared mechanisms of expression in both social contexts (nonadaptive covariation) or because correlational selection favors adaptive covariation. We evaluated these hypotheses by comparing behavior toward conspecifics and heterospecifics in brook stickleback (Culaea inconstans) from three populations sympatric with a...

Characteristics and distribution of large tandem duplications in brook stickleback (Culaea inconstans) mitochondrial DNA.

Most animal mitochondrial DNAs (mtDNAs) range in size from 15 to 18 kb, but increased sizes up to approximately 40 kb are occasionally found. We investigated large size variation in mtDNA of the brook stickleback fish, Culaea inconstans, and characterized four large (2.7-5.8 kb) tandem duplications. Duplications differ in size, frequency of occurrence, and degree of associated heteroplasmy, but...