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Woodlice and their parasitoid flies: revision of Isopoda (Crustacea, Oniscidea) - Rhinophoridae (Insecta, Diptera) interaction and first record of a parasitized Neotropical woodlouse species.

ABSTRACT: Terrestrial isopods are soil macroarthropods that have few known parasites and parasitoids. All known parasitoids are from the family Rhinophoridae (Insecta: Diptera). The present article reviews the known biology of Rhinophoridae flies and presents the first record of Rhinophoridae larvae on a Neotropical woodlouse species. We also compile and update all published interaction records. The Neotropical woodlouse Balloniscusglaber was parasitized by two different larval morphotypes of Rhinophoridae. Including this new record, there are 18 Isopoda species known to be parasitized and 13 Rhinophoridae species with known hosts, resulting in 35 interactions. There are a total of 53 interaction records from Holarctic and Neotropical countries. Of the 18 known isopod hosts, only five species have more than one parasitoid, including the new Neotropical host record presented in this work.

SUBMITTER: Wood CT

PROVIDER: S-EPMC6288268 | biostudies-literature | 2018

REPOSITORIES: biostudies-literature

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Woodlice and their parasitoid flies: revision of Isopoda (Crustacea, Oniscidea) - Rhinophoridae (Insecta, Diptera) interaction and first record of a parasitized Neotropical woodlouse species.

Wood Camila T CT Nihei Silvio S SS Araujo Paula B PB

ZooKeys 20181203 801

Terrestrial isopods are soil macroarthropods that have few known parasites and parasitoids. All known parasitoids are from the family Rhinophoridae (Insecta: Diptera). The present article reviews the known biology of Rhinophoridae flies and presents the first record of Rhinophoridae larvae on a Neotropical woodlouse species. We also compile and update all published interaction records. The Neotropical woodlouse <i>Balloniscusglaber</i> was parasitized by two different larval morphotypes of Rhino ...[more]

PMID: 30564046

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Project description:The marsupium, a brood pouch in peracarid crustaceans (Crustacea, Malacostraca) has evolved in terrestrial environment for providing nutrition and optimal conditions for embryogenesis. In the present study we give details on the histology and ultrastructure of its constituting elements such as oostegites and cotyledons. Marsupia of two different eco-morphological types of woodlice, namely the non-conglobating species Trachelipusrathkii Brandt, 1833 and the conglobating species Cylisticusconvexus De Geer, 1778 were investigated. Light microscopic (LM) studies showed some differences in the main structure of the two species' brood pouch: in Trachelipusrathkii, a 'clinger' type woodlice, the oostegites bend outwards during brood incubation as growing offspring require more space, while in Cylisticusconvexus, a 'roller' type isopod, the sternites arch into the body cavity to ensure space for developing offspring and still allowing conglobation of the gravid females. The quantitative analysis of the oostegites' cuticle proved that the outer part is about 2.5 - 3 times thicker compared to the inner part in both species. Electron microscopic (TEM) examinations show only small histological differences in the oostegites and cotyledon structure of the two species. Cellular elements and moderately electron dense fleecy precipitate are found in the hemolymph space between the two cuticles of oostegites. The cells contain PAS positive polysaccharide areas. TEM studies revealed some differences in the cotyledon ultrastructure of the two species. Cotyledons of Trachelipusrathkii consist of cells with cristate mitochondria and granular endoplasmic reticulum with cisterns. Cotyledons of Cylisticusconvexus consist of cells with densely cristate mitochondria and ribosomes attached to vesicular membrane structures. In both species cells with electron dense bodies were observed. We conclude that - besides the differences in marsupial shapes - the fine structure of the oostegites and cotyledons is hardly affected by the eco-morphological type, specifically the conglobating or non-conglobating character of the studied species.

Dataset Information

Woodlice and their parasitoid flies: revision of Isopoda (Crustacea, Oniscidea) - Rhinophoridae (Insecta, Diptera) interaction and first record of a parasitized Neotropical woodlouse species.

Publications

Woodlice and their parasitoid flies: revision of Isopoda (Crustacea, Oniscidea) - Rhinophoridae (Insecta, Diptera) interaction and first record of a parasitized Neotropical woodlouse species.

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