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The southern brook lamprey encounters a wide range of predators in its natural habitat. [7] The eggs of adults are preyed on by various species of fish and crayfish. [8] Southern brook lampreys in the larval stage serve as prey for a wide range of fish and bird species. [8]
Sea lamprey is the most sought-after species in Portugal and one of only two that can legally bear the commercial name "lamprey" (lampreia): the other one being Lampetra fluviatilis, the European river lamprey, both according to Portaria (Government regulation no. 587/2006, from 22 June).
The eggs of the American brook lamprey (ABL) are white, sticky, and small, measuring about 1 mm (0.04 in). When they hatch, the embryos are small as well, measuring less than 5 mm (0.20 in); they are white and wormlike. Within a month they take on the larval appearance.
The brook lamprey is a common, non-parasitic species that is endemic to Europe. [1] Adult brook lampreys measure from 12 to 14 cm (4.7 to 5.5 in). The body is highly elongated and dark blue or greenish above, lightening to yellowish off-white on the sides and pure white on the ventral side.
Lampetra is a genus of lampreys in the family Petromyzontidae.. Phylogenetic studies indicate that this genus as presently defined is polyphyletic, with species of this genus from western North America forming a clade that forms the sister group to Lethenteron, Eudontomyzon, and Lampetra sensu stricto (eastern North American and European species).
There are currently six recognized species in this genus: [2] Ichthyomyzon bdellium (D. S. Jordan, 1885) (Ohio lamprey) Ichthyomyzon castaneus Girard, 1858 (Chestnut lamprey) Ichthyomyzon fossor Reighard & Cummins, 1916 (Northern brook lamprey) Ichthyomyzon gagei C. L. Hubbs & Trautman, 1937 (Southern brook lamprey)
A study of Pennsylvania streams found that two of the six species of lampreys normally found breeding in the streams were not there. [10] One of the species not found was the northern brook lamprey. It is speculated that the main reason for population decline is due to the presence of sea lamprey and the lampricides used to be rid of them. [10]
Northern brook lamprey (Ichthyomyzon fossor) Southern brook lamprey (Ichthyomyzon gagei) Mountain brook lamprey (Ichthyomyzon greeleyi) Silver lamprey (Ichthyomyzon unicuspis) Least brook lamprey (Lampetra aepyptera) Lampetra ayresii; European river lamprey (Lampetra fluviatilis) Brook lamprey (Lampetra planeri) Western brook lamprey (Lampetra ...