Life history of Genarchopsis goppo Ozaki, 1925 (Trematoda: Hemiuridae) from the freshwater fish Channa punctata

1978 ◽  
Vol 52 (3) ◽  
pp. 251-259 ◽  
Author(s):  
R. Madhavi
Keyword(s):  
Life History ◽  
Life Cycle ◽  
Intermediate Host ◽  
Freshwater Fish ◽  
Paratenic Host ◽  
Developmental Cycle ◽  
Channa Punctata ◽  
History Of ◽  
First Intermediate Host

ABSTRACTThe life cycle of Genarchopsis goppo a hemiurid trematode found in the stomach of Channa punctata has been worked out in detail. The egg contains a fully developed miracidium at the time of liberation. The miracidium contains a ciliated covering, a long apical gland and a crown of spines at the anterior end. The snail Amnicola travancorica acts as the first intermediate host inside which the miracidium passes through sporocyst and redial generations. The cercaria is of cystophorous type and is identical to Cercariae Indicae Sewell XXXV. Metacercaria occurs in the ostracods Stenocypris malcolmsoni and Eucyoris capensis. The fish Aplocheilus panchax serves as the paratenic host. The entire developmental cycle from egg to egg producing adult takes 3 months.

Life history of Allocreadium fasciatusi Kakaji, 1969 (Trematoda: Allocreadiidae) from the freshwater fish Aplocheilus melastigma McClelland

1978 ◽  
Vol 52 (1) ◽  
pp. 51-59 ◽  
Author(s):  
R. Madhavi
Keyword(s):  
Life History ◽  
Life Cycle ◽  
Freshwater Fish ◽  
Original Description ◽  
Life Cycles ◽  
Long Tail ◽  
Mesocyclops Leuckarti ◽  
Two Generations ◽  
History Of ◽  
First Intermediate Host

ABSTRACTThe life history of Allocreadium fasciatusi which occurs in the intestine of a freshwater fish Aplocheilus melastigma has been worked out in detail. The snail Amnicola travancorica acts as the first intermediate host. The miracidium hatching out from the eggs attacks the snail and passes through two generations of rediae. Cercariae are of ophthalmoxiphidiocercous type with very long tail and are identical to Cercariae Indicae XLIX Sewell, 1922. The cercariae penetrate and develop into metacercariae in the haemecoel of the copepods Mesocyclops leuckarti, Microcyclops varicans and Marcocyclops distructus. Upon ingestion by the definitive host, the metacercariae excyst and develop into adults. All the stages in the life cycle are described and the life cycle is compared with other allocreadiid life cycles. The original description of A. fasciatusi is revised and Psilostomum chilkai Chatterji, 1956 from Lates calcalifer is synonymized with it.

THE MORPHOLOGY, TAXONOMY, AND LIFE HISTORY OF METORCHIS CONJUNCTUS (COBBOLD, 1860)

1944 ◽  
Vol 22d (1) ◽  
pp. 6-16 ◽  
Author(s):  
Thomas W. M. Cameron
Keyword(s):  
Life History ◽  
Life Cycle ◽  
Intermediate Host ◽  
Larval Stages ◽  
History Of ◽  
Second Intermediate Host ◽  
The Common ◽  
First Intermediate Host

A trematode, widely distributed in Canada, and occurring in man and other fish-eating mammals, is described and its taxonomy discussed. Its life cycle has been worked out and it is shown to involve a snail, Amnicola limosa porata as first intermediate host and a fish, the common sucker (Catostomus commersonii) as the second intermediate host. The larval stages are described.

The Life-Cycle and Morphology of Stemmatostoma-Pearsoni, Gen Et Sp-Nov, With Notes on the Morphology of Telogaster-Opisthorchis Macfarlane (Digenea, Cryptogonimidae)

1986 ◽  
Vol 34 (2) ◽  
pp. 279 ◽  
Author(s):  
TH Cribb
Keyword(s):  
Life Cycle ◽  
Intermediate Host ◽  
Freshwater Fish ◽  
Oral Sucker ◽  
Intermediate Hosts ◽  
Redial Generation ◽  
Adult Morphology ◽  
Mother Sporocyst ◽  
First Intermediate Host ◽  
Prosobranch Snail

Stemmatostoma pearsoni, gen. et sp. nov., is described from the intestine of Leiopotherapon unicolor (Gunther) and Macquaria novemaculeata (Steindachner) in Queensland. Stemmatostoma is placed within the Neochasminae and is distinguished by its long oesophagus, compact ovary, short caeca, pre-ovarian vitellaria, simple gonotyl and funnel-shaped oral sucker. The diagnosis of the Neochasminae is emended excluding Parspina Pearse. Telogaster opisthorchis Macfarlane is recorded from the intestine of Anguilla reinhardtii Steindachner from Victoria. The spinose oral suckers of S. pearsoni and T. opisthorchis are capable of being retracted into tegumental pockets. It is postulated that this arrangement may be widespread amongst spinose cryptogonimids. The first intermediate host of S. pearsoni is Posticobia brazieri (Smith), a prosobranch snail. The second intermediate hosts are freshwater fish: Hypseleotris galii (Ogilby), H. compressus (Krefft), Mogurnda mogurnda (Richardson), M. adspersa (Castelnau), Philypnodon grandiceps (Krefft), Gobiomorphus australis (Krefft), and Pseudomugil signifer Kner. Within the snail there is a mother sporocyst generation, a redial generation and a cercarial generation. Development of the mother sporocyst is similar to that described for other opisthorchioids. Cryptogonimid cercariae are characterized by 16 flame-cells, pre-vesicular penetration glands, dorso-ventral caudal finfolds and absence of body pigmentation. On the basis of cercarial and adult morphology it is proposed that Pseudexorchis Yamaguti be excluded from the Cryptogonimidae.

PROBING FOR STRONTIUM PATTERNS IN OTOLITHS OF COMMON BULLIES FROM THE CLUTHA RIVER, NEW ZEALAND

2002 ◽  
Vol 12 (03n04) ◽  
pp. 109-115 ◽  
Author(s):  
A. MARKWITZ ◽  
B. BARRY ◽  
G. CLOSS ◽  
M. SMITH
Keyword(s):  
Life History ◽  
Life Cycle ◽  
New Zealand ◽  
Freshwater Fish ◽  
Fresh Water ◽  
Juvenile Phase ◽  
History Of ◽  
The Individual ◽  
Fish Otoliths ◽  
Gobiomorphus Cotidianus

Common bullies, Gobiomorphus cotidianus, are a widespread small New Zealand freshwater fish, with a life-cycle that may include an optional juvenile marine phase. We used the strontium variation in fish otoliths in an attempt to track the life history of the individual fish since the interlayer variation reflect the exposure of fish to background environmental levels of Sr at the time of deposition. One possible mechanism by which Sr can be enriched in otoliths is by seawater, which usually has a higher Sr/Ca ratio than fresh water. Locally resolved elemental measurements with a proton microprobe enable therefore the detection of variation in Sr that may reflect single or multiple migrations of freshwater fish into seawater. The most striking feature of this study is the observation of high Sr/Ca ratios in the cores of all otoliths, including those from fish caught 50 km inland. This suggests different environments in the life cycle of common bullies in the lower reaches of the Clutha river. A marine juvenile phase may be a common feature. Preliminary area scans were used to select suitable transects for detailed line scans which gave greatly improved statistics.

The Life History of Gastrodiscoides hominis (Lewis and McConnel, 1876) Leiper, 1913– the Amphistome Parasite of Man and Pig

1972 ◽  
Vol 46 (1) ◽  
pp. 35-46 ◽  
Author(s):  
S. C. Dutt ◽  
H. D. Srivastava
Keyword(s):  
Life History ◽  
Life Cycle ◽  
Intermediate Host ◽  
Definitive Host ◽  
Growth And Development ◽  
Snail Host ◽  
Adult Fluke ◽  
History Of

The life cycle of Gastrodiscoidcs hominis has been described using Helicorbis coenosus as the experimental intermediate host and the pig as the definitive host.The morphology of the miracidium, redia and metacercaria has been described. Data have been furnished on the infection and longevity, of and production of cercariae by the snail host, and the growth and development of the adult-fluke in the definitive host.

Life cycle of Gnathostoma nipponicum Yamaguti, 1941

1992 ◽  
Vol 66 (1) ◽  
pp. 53-61 ◽  
Author(s):  
K. Ando ◽  
H. Tokura ◽  
H. Matsuoka ◽  
D. Taylor ◽  
Y. Chinzei
Keyword(s):  
Life Cycle ◽  
Intermediate Host ◽  
Experimental Infection ◽  
Definitive Host ◽  
Field Survey ◽  
Paratenic Host ◽  
Third Stage ◽  
Second Intermediate Host ◽  
First Intermediate Host

ABSTRACTThe life cycle of Gnathostoma nipponicum was examined by field survey and by experimental infection of animals with the larvae. Naturally infected larval G. nipponicum were found in loaches, catfish, and snakes. Experimentally, loaches, killifishes, frogs, salamanders, mice, and rats were successfully infected with the early third-stage larvae of G. nipponicum obtained from copepods (the first intermediate host), whereas snakes, quails, and weasels were not. Frogs, snakes, quails, and rats were experimentally infected with the advanced third-stage larvae (AdL3) from loaches. These results reveal that some species of fishes, amphibians and mammals can act as the second intermediate host and that some species of reptiles, birds and mammals can act as a paratenic host. The life cycle was completed in weasels, the definitive host, which were infected with AdL3 from loaches and started to evacuate eggs of G. nipponicum in faeces on days 65–90 postinfection.

ON THE MORPHOLOGY AND LIFE HISTORY OF PHOCANEMA DECIPIENS (KRABBE, 1878) MYERS, 1959 (NEMATODA:ANISAKIDAE)

1960 ◽  
Vol 38 (2) ◽  
pp. 331-344 ◽  
Author(s):  
B. J. Myers
Keyword(s):  
Life History ◽  
Life Cycle ◽  
Intermediate Host ◽  
Salt Water ◽  
Harp Seal ◽  
Free Living ◽  
Source Of Infection ◽  
Probable Source ◽  
History Of ◽  
Freezing Temperatures

Phocanema (synonyms: Porrocaecum, Terranova) decipiens is described in detail and its probable life cycle outlined. Eggs deposited in salt water develop and hatch in 7 to 14 days at between 10 °C and 24 °C, even after previous freezing. Temperatures over 24 °C are lethal. Larvae fed to a large variety of invertebrates passed quickly through their intestines still alive; fed to fish, they disappeared within 24 hours but in one case a larva was found ensheathed in the intestine. No larvae were found in 'wild' invertebrates although many were infected with free-living nematodes. It is concluded that, while numerous invertebrates may act as 'transport' hosts for the larva to a fish, none acts as a true intermediate host. While larvae infective to seals occur commonly in the muscles of cod, a large variety of other fish are also infected and are a more probable source of infection. Development to maturity in the seal takes approximately three weeks, and it is probable that the main source of the infection in the Gulf of St, Lawrence is the harp seal, although harbor and grey seals also contribute to it.

On Protozoal Blood Parasites Collected in Uganda

Parasitology ◽  
1932 ◽  
Vol 24 (2) ◽  
pp. 210-224 ◽  
Author(s):  
Cecil A. Hoare
Keyword(s):  
Life History ◽  
New Species ◽  
Intermediate Host ◽  
Blood Parasites ◽  
Parasitic Protozoa ◽  
History Of ◽  
New Hosts ◽  
Nomen Novum ◽  
Glossina Palpalis

This paper contains a report on a collection of parasitic protozoa from the blood of some vertebrate animals of Uganda.Seven new species and a number of parasites recorded for new hosts are described. New observations on some known parasites are also recorded.An account is given of the life history of the crocodile haemogregarine. It is shown that the schizogony of Hepatozoon pettiti (nomen novum for Haemogregarina pettiti) occurs in the liver of the crocodile, while the sporogony takes place in Glossina palpalis, its intermediate host.A list of all the blood parasites found, together with their hosts, is given.

The reproduction and larval development of Nereis fucata (Savigny)

1959 ◽  
Vol 38 (1) ◽  
pp. 65-80 ◽  
Author(s):  
J. B. Brown-Gilpin
Keyword(s):  
Life History ◽  
Life Cycle ◽  
Experimental Methods ◽  
Point Of View ◽  
Hermit Crabs ◽  
Special Importance ◽  
Reproductive Patterns ◽  
Complete Life Cycle ◽  
History Of ◽  
The Many

The wide variety of reproductive patterns and behaviour in the many species of Nereidae already studied clearly justifies further research. But the life history of Nereis fucata (Savigny) is not only of interest from the comparative point of view. Its commensal habit (it occurs within shells occupied by hermit crabs) immediately gives it a special importance. This alone warrants a detailed study, particularly as no commensal polychaete has yet been reared through to metamorphosis and settlement on its host (Davenport, 1955; Davenport & Hickok, 1957). The numerous interesting problems which arise, and the experimental methods needed to study them, are, however, beyond the range of a paper on nereid development. It is therefore proposed to confine the present account to the reproduction and development up to the time when the larvae settle on the bottom. The complete life cycle, the mechanism of host-adoption, and related topics, will be reported in later papers.

scholarly journals A STUDY OF THE LIFE HISTORY OF TRICHOBILHARZIA CAMERONI SP. NOV. (FAMILY SCHISTOSOMATIDAE)

1953 ◽  
Vol 31 (4) ◽  
pp. 351-373 ◽  
Author(s):  
Liang-Yu Wu
Keyword(s):  
Life History ◽  
Life Cycle ◽  
Room Temperature ◽  
Migratory Birds ◽  
Local Infection ◽  
Domestic Ducks ◽  
Ottawa River ◽  
Daughter Sporocyst ◽  
Physa Gyrina ◽  
History Of

A cause of swimmer's itch in the lower Ottawa River is Trichobilharzia cameroni sp. nov. Its life cycle has been completed experimentally in laboratory-bred snails and in canaries and ducks, and the various stages are described. The eggs are spindle-shaped. The sporocysts are colorless and tubular. Mother sporocysts become mature in about a week. The younger daughter sporocyst is provided with spines on the anterior end and becomes mature in about three weeks. The development in the snail requires from 28 to 35 days. A few cercariae were found to live for up to 14 days at 50 °C., although their life at 16° to 18 °C. was about four days. Cercariae kept at room temperature for 60 to 72 hr. were found infective. The adults become mature in canaries and pass eggs in about 12 to 14 days. Physa gyrina is the species of snail naturally infected. It was found in one case giving off cercariae for five months after being kept in the laboratory. Domestic ducks were found to become infected until they were at least four months old, with the parasites developing to maturity in due course; no experiments were made with older ducks. Furthermore, miracidia were still recovered from the faeces four months after the duck had been experimentally infected, and it is suggested that migratory birds are the source of the local infection.

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