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Speciation of echinostomes: evidence for the existence of two sympatric sibling species in the complex Echinoparyphium recurvatum (von Linstow 1873) (Digenea: Echinostomatidae).
Parasitology. 1990 Aug; 101 Pt 1:35-42.P

Abstract

Evidence for the existence of 2 first intermediate host-specific sibling species of the 45 collar-spined echinostome Echinoparyphium recurvatum is presented. Experimental studies on their life-cycles were carried out under controlled laboratory conditions. The two entities were found to be morphologically indistinguishable in all major respects, yet they exhibited distinct biological characteristics. One of the sibling species utilizes the freshwater lymnaeid pulmonate snail Lymnaea peregra as first intermediate host, and the adults occur in the anterior small intestine of the wildfowl experimental definitive host Anas platyrhynchos. The other utilizes the freshwater mesogastropod prosobranch snail Valvata piscinalis as first intermediate host, and the adults occur in the posterior small intestine and rectum of A. platyrhynchos. The existence of the two sibling species in sympatry may be explained by the fact that the life-cycles of the two forms represent two distinct cycles of transmission serving to reduce excessive competition between them.

Authors+Show Affiliations

Division of Biosphere Sciences, King's College London, University of London, Kensington.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

2235072

Citation

McCarthy, A M.. "Speciation of Echinostomes: Evidence for the Existence of Two Sympatric Sibling Species in the Complex Echinoparyphium Recurvatum (von Linstow 1873) (Digenea: Echinostomatidae)." Parasitology, vol. 101 Pt 1, 1990, pp. 35-42.
McCarthy AM. Speciation of echinostomes: evidence for the existence of two sympatric sibling species in the complex Echinoparyphium recurvatum (von Linstow 1873) (Digenea: Echinostomatidae). Parasitology. 1990;101 Pt 1:35-42.
McCarthy, A. M. (1990). Speciation of echinostomes: evidence for the existence of two sympatric sibling species in the complex Echinoparyphium recurvatum (von Linstow 1873) (Digenea: Echinostomatidae). Parasitology, 101 Pt 1, 35-42.
McCarthy AM. Speciation of Echinostomes: Evidence for the Existence of Two Sympatric Sibling Species in the Complex Echinoparyphium Recurvatum (von Linstow 1873) (Digenea: Echinostomatidae). Parasitology. 1990;101 Pt 1:35-42. PubMed PMID: 2235072.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Speciation of echinostomes: evidence for the existence of two sympatric sibling species in the complex Echinoparyphium recurvatum (von Linstow 1873) (Digenea: Echinostomatidae). A1 - McCarthy,A M, PY - 1990/8/1/pubmed PY - 1990/8/1/medline PY - 1990/8/1/entrez SP - 35 EP - 42 JF - Parasitology JO - Parasitology VL - 101 Pt 1 N2 - Evidence for the existence of 2 first intermediate host-specific sibling species of the 45 collar-spined echinostome Echinoparyphium recurvatum is presented. Experimental studies on their life-cycles were carried out under controlled laboratory conditions. The two entities were found to be morphologically indistinguishable in all major respects, yet they exhibited distinct biological characteristics. One of the sibling species utilizes the freshwater lymnaeid pulmonate snail Lymnaea peregra as first intermediate host, and the adults occur in the anterior small intestine of the wildfowl experimental definitive host Anas platyrhynchos. The other utilizes the freshwater mesogastropod prosobranch snail Valvata piscinalis as first intermediate host, and the adults occur in the posterior small intestine and rectum of A. platyrhynchos. The existence of the two sibling species in sympatry may be explained by the fact that the life-cycles of the two forms represent two distinct cycles of transmission serving to reduce excessive competition between them. SN - 0031-1820 UR - https://www.unboundmedicine.com/medline/citation/2235072/Speciation_of_echinostomes:_evidence_for_the_existence_of_two_sympatric_sibling_species_in_the_complex_Echinoparyphium_recurvatum__von_Linstow_1873___Digenea:_Echinostomatidae__ L2 - https://antibodies.cancer.gov/detail/CPTC-SNAI1-1 DB - PRIME DP - Unbound Medicine ER -