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Endoparasitic Isopods (Epicaridea: Entoniscidae) of Hermit Crabs from the Philippines, including Description of a New Species of Paguritherium Reinhard, 1945 and Its Epicaridium Larvae.

Record Type:	Electronic resources : Monograph/item
Title/Author:	Endoparasitic Isopods (Epicaridea: Entoniscidae) of Hermit Crabs from the Philippines, including Description of a New Species of Paguritherium Reinhard, 1945 and Its Epicaridium Larvae./
Author:	DeTorre, Marissa.
Published:	Ann Arbor : ProQuest Dissertations & Theses, : 2022,
Description:	48 p.
Notes:	Source: Masters Abstracts International, Volume: 83-12.
Contained By:	Masters Abstracts International83-12.
Subject:	Ecology. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=29214626
ISBN:	9798802748459

Endoparasitic Isopods (Epicaridea: Entoniscidae) of Hermit Crabs from the Philippines, including Description of a New Species of Paguritherium Reinhard, 1945 and Its Epicaridium Larvae.
DeTorre, Marissa.

Endoparasitic Isopods (Epicaridea: Entoniscidae) of Hermit Crabs from the Philippines, including Description of a New Species of Paguritherium Reinhard, 1945 and Its Epicaridium Larvae. - Ann Arbor : ProQuest Dissertations & Theses, 2022 - 48 p.

Source: Masters Abstracts International, Volume: 83-12.

Thesis (M.S.)--Hofstra University, 2022.

This item must not be sold to any third party vendors.

Entoniscid isopods are obligate endoparasites of other crustacean species. They have an indirect lifestyle with two hosts and multiple larval stages; as adults they are found living within definitive decapod hosts. Hermit crabs were previously known to be definitive hosts of only two species of entoniscid parasites: Paguritherium alatum Reinhard, 1945, from the east coast of the United States and Diogenion vermifactus Codreanu, Codreanu & Pike, 1960 from the Red Sea. Little beyond the original descriptions of these species has been reported in the literature. Recently, two species of entoniscids were found parasitizing hermit crabs (mostly Calcinus spp.) collected from shallow water coral reef areas in the Philippines. The goal of this study was to describe the morphology of both the adult and larval stages of the entoniscids, through light and scanning electron microscopy, and compare them to the previously described species that infest hermit crabs. One of these entoniscids was tentatively identified as D. vermifactus, which infested 0.95% of the hermit crabs (5 of 527 specimens) sampled. All specimens of D. c.f. vermifactus were found in the abdomen of Calcinus gaimardii, C. minutus, and C. pulcher. If confirmed as D. vermifactus, the species has broader host use and a much wider geographic distribution than previously known. The second entoniscid was found to be a new species of the genus Paguritherium and infested 0.76% of the hermit crabs (4 of 527 specimens) sampled, all hosts were C. gaimardii. Females of Paguritherium n. sp. are characterized by a highly vaulted head, a slender body and long pleopods; males by a blunt head and stump like pereopods covered in scales; the new species can be distinguished from P. alatum based on the specialized setae on the first five pereopods of the epicardium larvae.

ISBN: 9798802748459Subjects--Topical Terms:

516476
Ecology.
Subjects--Index Terms:

Crustaceans

Endoparasitic Isopods (Epicaridea: Entoniscidae) of Hermit Crabs from the Philippines, including Description of a New Species of Paguritherium Reinhard, 1945 and Its Epicaridium Larvae.
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245 1 0 $a Endoparasitic Isopods (Epicaridea: Entoniscidae) of Hermit Crabs from the Philippines, including Description of a New Species of Paguritherium Reinhard, 1945 and Its Epicaridium Larvae.
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500 $a Source: Masters Abstracts International, Volume: 83-12.
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506 $a This item must not be sold to any third party vendors.
520 $a Entoniscid isopods are obligate endoparasites of other crustacean species. They have an indirect lifestyle with two hosts and multiple larval stages; as adults they are found living within definitive decapod hosts. Hermit crabs were previously known to be definitive hosts of only two species of entoniscid parasites: Paguritherium alatum Reinhard, 1945, from the east coast of the United States and Diogenion vermifactus Codreanu, Codreanu & Pike, 1960 from the Red Sea. Little beyond the original descriptions of these species has been reported in the literature. Recently, two species of entoniscids were found parasitizing hermit crabs (mostly Calcinus spp.) collected from shallow water coral reef areas in the Philippines. The goal of this study was to describe the morphology of both the adult and larval stages of the entoniscids, through light and scanning electron microscopy, and compare them to the previously described species that infest hermit crabs. One of these entoniscids was tentatively identified as D. vermifactus, which infested 0.95% of the hermit crabs (5 of 527 specimens) sampled. All specimens of D. c.f. vermifactus were found in the abdomen of Calcinus gaimardii, C. minutus, and C. pulcher. If confirmed as D. vermifactus, the species has broader host use and a much wider geographic distribution than previously known. The second entoniscid was found to be a new species of the genus Paguritherium and infested 0.76% of the hermit crabs (4 of 527 specimens) sampled, all hosts were C. gaimardii. Females of Paguritherium n. sp. are characterized by a highly vaulted head, a slender body and long pleopods; males by a blunt head and stump like pereopods covered in scales; the new species can be distinguished from P. alatum based on the specialized setae on the first five pereopods of the epicardium larvae.
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653 $a Isopoda
653 $a Marine parasite
653 $a New species
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856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=29214626