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DEVELOPMENT AND SEASONAL TRANSMISSIO...

SMITH, JOHN DOUGLAS.

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DEVELOPMENT AND SEASONAL TRANSMISSION OF RAPHIDASCARIS ACUS (NEMATODA, ANISAKIDAE), A PARASITE OF FISHES, WITH A REVISION OF THE GENUS.

Record Type:	Electronic resources : Monograph/item
Title/Author:	DEVELOPMENT AND SEASONAL TRANSMISSION OF RAPHIDASCARIS ACUS (NEMATODA, ANISAKIDAE), A PARASITE OF FISHES, WITH A REVISION OF THE GENUS./
Author:	SMITH, JOHN DOUGLAS.
Notes:	Source: Dissertation Abstracts International, Volume: 44-06, Section: B, page: 1747.
Contained By:	Dissertation Abstracts International44-06B.
Subject:	Biology, Zoology. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=NK63438
ISBN:	9780315155299

DEVELOPMENT AND SEASONAL TRANSMISSION OF RAPHIDASCARIS ACUS (NEMATODA, ANISAKIDAE), A PARASITE OF FISHES, WITH A REVISION OF THE GENUS.
SMITH, JOHN DOUGLAS.

DEVELOPMENT AND SEASONAL TRANSMISSION OF RAPHIDASCARIS ACUS (NEMATODA, ANISAKIDAE), A PARASITE OF FISHES, WITH A REVISION OF THE GENUS.

Source: Dissertation Abstracts International, Volume: 44-06, Section: B, page: 1747.

Thesis (Ph.D.)--University of Guelph (Canada), 1983.

The taxonomy of the genus Raphidascaris (Anisakidae) is revised. Raphidascaris acus (Bloch, 1779) Railliet & Henry, 1915 is redescribed and its distribution, development and seasonal transmission in two small lakes on Manitoulin Island, Ontario are described.

ISBN: 9780315155299Subjects--Topical Terms:

1018632
Biology, Zoology.

DEVELOPMENT AND SEASONAL TRANSMISSION OF RAPHIDASCARIS ACUS (NEMATODA, ANISAKIDAE), A PARASITE OF FISHES, WITH A REVISION OF THE GENUS.
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100 1 $a SMITH, JOHN DOUGLAS. $3 1924423
245 1 0 $a DEVELOPMENT AND SEASONAL TRANSMISSION OF RAPHIDASCARIS ACUS (NEMATODA, ANISAKIDAE), A PARASITE OF FISHES, WITH A REVISION OF THE GENUS.
500 $a Source: Dissertation Abstracts International, Volume: 44-06, Section: B, page: 1747.
502 $a Thesis (Ph.D.)--University of Guelph (Canada), 1983.
520 $a The taxonomy of the genus Raphidascaris (Anisakidae) is revised. Raphidascaris acus (Bloch, 1779) Railliet & Henry, 1915 is redescribed and its distribution, development and seasonal transmission in two small lakes on Manitoulin Island, Ontario are described.
520 $a Valid species are R. acus and R. biwakoensis in freshwater fishes and R. chirocentri, R. lutiani and R. vicentei in marine fishes. Ascaris lucii, R. laurentianus and R. alius are designated synonyms of R. acus; and R. atlanticus, R. yamagutii and R. camura are designated synonyms of R. vicentei. Five others are considered species inquirendae. Raphidascaris acus infects a variety of fishes throughout the Holarctic. Two marine species also have broad host and geographic distributions.
520 $a Raphidascaris acus develops to the second stage in the egg. Invertebrates act as paratenic hosts and acquire the parasite by ingesting larvated eggs. Amphipods and chironomid larvae were experimentally infected and dragonfly nymphs and caddisfly larvae naturally infected. A variety of fish are intermediate hosts. Darters (Etheostoma spp.) and yellow perch (Perca flavescens) were infected experimentally. Larvae develop to the fourth stage in the liver, moulting at 1.3 and 2.2-2.5 mm and growing to 5-6 mm. The parasite attains the adult stage in the gut of piscivorous fish, moulting at about 6 mm and maturing in about a month at 12-14(DEGREES)C. Northern pike (Esox lucius), rainbow trout (Salmo gairdneri) and brook trout (Salvelinus fontinalis) were infected experimentally.
520 $a In the study lakes, perch was the most important intermediate host of R. acus. Second-stage larvae were acquired from invertebrates in summer and developed to the fourth stage by November. They became encapsulated during the next summer but remained alive for at least another year. Thus, infective larvae were present in perch all year. Northern pike was the definitive host. Mean abundance of the parasite was over 200 in winter and spring and less than 15 in summer. Mature worms were present in spring. The seasonal transmission is probably controlled by timing of predation on perch and rate of development and longevity of the parasite. Low intensity in pike in summer may result from low recruitment and rapid turnover of the parasite population.
520 $a It is proposed that earliest aquatic ascaridoids used invertebrate paratenic hosts and fish intermediate hosts. Transmission of existing anisakids can be derived from this primitive pattern.
590 $a School code: 0081.
650 4 $a Biology, Zoology. $3 1018632
690 $a 0472
710 2 $a University of Guelph (Canada). $3 1018650
773 0 $t Dissertation Abstracts International $g 44-06B.
790 $a 0081
791 $a Ph.D.
792 $a 1983
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=NK63438