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Description and proposed life cycle of Maritrema novaezealandensis n. sp. (Microphallidae) parasitic in red-billed gulls, Larus novaehollandiae scopulinus, from Otago Harbor, South Island, New Zealand.
J Parasitol. 2004 Apr; 90(2):272-7.JP

Abstract

Maritrema novaezealandensis n. sp. is described from Otago Harbor, South Island, New Zealand, on the basis of adult specimens collected from the Red-billed gull, Larus novaehollandiae scopulinus, and excysted metacercariae obtained from crabs. It belongs to the "eroliae group" and differs from other related species mainly in the shape, size, and patterns of distributions of the spines on the cirrus, the shape of the metraterm, the presence of an unlobed ovary, and the complete ring of the vitelline follicles. Based on morphometric features of metacercariae and adult specimens, the trophic relationships among invertebrate and vertebrate hosts, experimental infections, and previous reports of species of Maritrema with similar transmission patterns, the life cycle of M. novaezealandensis n. sp. is described. A 3-host life cycle is proposed for this parasite. The first intermediate host is the mud snail, Zeacumantus subcarinatus, in which the cercarial stage is produced in sporocysts located within the gonad of the snail. At least 3 crab species (Hemigrapsus crenulatus, Macrophtalmus hirtipes, and Halicarcinus whitei) and several species of amphipods act as second intermediate hosts, with metacercariae encysted in the body cavity of the crustacean host. Finally, the definitive host, the gull, L. n. scopulinus, harbors the adult worms in its intestine.

Authors+Show Affiliations

Centro de Estudios Parasitologicos y Vectores, Calle 2, no. 584, 1900 La Plata, Argentina. sergio@cepave.com.arNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

15165049

Citation

Martorelli, Sergio R., et al. "Description and Proposed Life Cycle of Maritrema Novaezealandensis N. Sp. (Microphallidae) Parasitic in Red-billed Gulls, Larus Novaehollandiae Scopulinus, From Otago Harbor, South Island, New Zealand." The Journal of Parasitology, vol. 90, no. 2, 2004, pp. 272-7.
Martorelli SR, Fredensborg BL, Mouritsen KN, et al. Description and proposed life cycle of Maritrema novaezealandensis n. sp. (Microphallidae) parasitic in red-billed gulls, Larus novaehollandiae scopulinus, from Otago Harbor, South Island, New Zealand. J Parasitol. 2004;90(2):272-7.
Martorelli, S. R., Fredensborg, B. L., Mouritsen, K. N., & Poulin, R. (2004). Description and proposed life cycle of Maritrema novaezealandensis n. sp. (Microphallidae) parasitic in red-billed gulls, Larus novaehollandiae scopulinus, from Otago Harbor, South Island, New Zealand. The Journal of Parasitology, 90(2), 272-7.
Martorelli SR, et al. Description and Proposed Life Cycle of Maritrema Novaezealandensis N. Sp. (Microphallidae) Parasitic in Red-billed Gulls, Larus Novaehollandiae Scopulinus, From Otago Harbor, South Island, New Zealand. J Parasitol. 2004;90(2):272-7. PubMed PMID: 15165049.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Description and proposed life cycle of Maritrema novaezealandensis n. sp. (Microphallidae) parasitic in red-billed gulls, Larus novaehollandiae scopulinus, from Otago Harbor, South Island, New Zealand. AU - Martorelli,Sergio R, AU - Fredensborg,Brian L, AU - Mouritsen,Kim N, AU - Poulin,Robert, PY - 2004/5/29/pubmed PY - 2004/6/21/medline PY - 2004/5/29/entrez SP - 272 EP - 7 JF - The Journal of parasitology JO - J. Parasitol. VL - 90 IS - 2 N2 - Maritrema novaezealandensis n. sp. is described from Otago Harbor, South Island, New Zealand, on the basis of adult specimens collected from the Red-billed gull, Larus novaehollandiae scopulinus, and excysted metacercariae obtained from crabs. It belongs to the "eroliae group" and differs from other related species mainly in the shape, size, and patterns of distributions of the spines on the cirrus, the shape of the metraterm, the presence of an unlobed ovary, and the complete ring of the vitelline follicles. Based on morphometric features of metacercariae and adult specimens, the trophic relationships among invertebrate and vertebrate hosts, experimental infections, and previous reports of species of Maritrema with similar transmission patterns, the life cycle of M. novaezealandensis n. sp. is described. A 3-host life cycle is proposed for this parasite. The first intermediate host is the mud snail, Zeacumantus subcarinatus, in which the cercarial stage is produced in sporocysts located within the gonad of the snail. At least 3 crab species (Hemigrapsus crenulatus, Macrophtalmus hirtipes, and Halicarcinus whitei) and several species of amphipods act as second intermediate hosts, with metacercariae encysted in the body cavity of the crustacean host. Finally, the definitive host, the gull, L. n. scopulinus, harbors the adult worms in its intestine. SN - 0022-3395 UR - https://www.unboundmedicine.com/medline/citation/15165049/Description_and_proposed_life_cycle_of_Maritrema_novaezealandensis_n__sp___Microphallidae__parasitic_in_red_billed_gulls_Larus_novaehollandiae_scopulinus_from_Otago_Harbor_South_Island_New_Zealand_ L2 - http://www.journalofparasitology.org/doi/10.1645/GE-3254?url_ver=Z39.88-2003&rfr_id=ori:rid:crossref.org&rfr_dat=cr_pub=pubmed DB - PRIME DP - Unbound Medicine ER -