A quantitative study of the helminth parasites of the Newfoundland short-finned squid, Illex illecebrosus illecebrosus (LeSueur) (Cephalopoda:Decapoda)

1968 ◽  
Vol 46 (6) ◽  
pp. 1087-1093 ◽  
Author(s):  
Elizabeth L. Brown ◽  
William Threlfall
Keyword(s):  
Quantitative Study ◽  
Seasonal Variations ◽  
Standard Length ◽  
New Records ◽  
Parasite Burden ◽  
Late Summer ◽  
Eastern Coast ◽  
Published Data ◽  
Helminth Parasites ◽  
Host Animal

Ommastrephid squid of the subspecies Illex illecebrosus illecebrosus (LeSueur) were obtained during the late summer and early autumn of 1966 and 1967 from numerous areas around the eastern coast of the island of Newfoundland. Helminths of five genera were found, namely, Phyllobothrium sp. and Dinobothrium plicitum (both of which had previously been recorded from this host), Pelichnibothrium speciosum, Scolex polymorphus, and Nybelinia sp. The last three represent new records from this ommastrephid. The incidence of these parasites was tested for correlation with standard length and with sex of the host animal. Annual and seasonal variations in degree of infection were also noted. The greatest number of procercoids encountered were Dinobothrium plicitum. Degree of infection with helminths in 1966 and 1967 was similar (39%:40%) and contrary to earlier published data, infection by cestodes is not always directly correlated with mantle length. Any possible relations between sex of the squid and parasite burden are unclear.

Gastrointestinal helminth parasites of the common wallaroo or euro, Osphranter robustus (Gould) (Marsupialia: Macropodidae) from Australia

2020 ◽  
Vol 94 ◽  
Author(s):  
I. Beveridge
Keyword(s):  
Parasite Species ◽  
Parasite Fauna ◽  
Eastern Coast ◽  
Published Data ◽  
Helminth Parasites ◽  
Northern Australia ◽  
Gastrointestinal Helminth ◽  
High Prevalence ◽  
The Common ◽  
Specific Species

Abstract The gastrointestinal helminth parasites of 170 common wallaroos or euros, Osphranter robustus (Gould), collected from all mainland states in which the species occurs as well as the Northern Territory, are presented, including previously published data. A total of 65 species of helminths were encountered, including four species of anoplocephalid cestodes found in the bile ducts and small intestine, and 61 species of strongylid nematodes, all but two of which occurring in the stomach, and with the remainder occurring in the terminal ileum, caecum and colon. Among the mainland subspecies of O. robustus, 52 species of helminths were encountered in O. r. robustus, compared with 30 species in O. r. woodwardi and 35 species in O. r. erubescens. Of the parasite species encountered, only 17 were specific to O. robustus, the remaining being shared with sympatric host species. Host-specific species or species occurring in O. robustus at a high prevalence can be classified as follows: widely distributed; restricted to northern Australia; restricted to the northern wallaroo, O. r. woodwardi; found only in the euro, O. r. erubescens; found essentially along the eastern coast of Australia, primarily in O. r. robustus; and species with highly limited regional distributions. The data currently available suggest that the acquisition of a significant number of parasites is due to co-grazing with other macropodids, while subspeciation in wallaroos as well as climatic variables may have influenced the diversification of the parasite fauna.

Checklist of Staphylinidae (Coleoptera) of El Salvador

Zootaxa ◽  
2021 ◽  
Vol 4951 (1) ◽  
pp. 80-106
Author(s):  
JOSÉ D. PABLO-CEA ◽  
ANGÉLICO ASENJO ◽  
JOSÉ L. NAVARRETE-HEREDIA ◽  
ALFRED F. NEWTON
Keyword(s):  
El Salvador ◽  
Endemic Species ◽  
New Records ◽  
Published Data ◽  
Beetle Species ◽  
Country Level ◽  
Ecological Literature

This paper is primarily a compilation of published data on the staphylinid beetle species reported for El Salvador. It is based on taxonomic and ecological literature, with inclusion of some new records from different entomological collections. Thirty eight genera and 96 species are reported in the list, including a first country record: Eulissus chalybaeus. Country-level distribution outside of El Salvador, locality references and topographic zones are included for each species. In the list, three endemic species are recorded: Seeversiella badia, S. minima and Stenus salvadorensis. It is remarkable that 14 genera (37%) and 52 species (54%) have only been reported at a country level in the literature, without a specific locality of collection, indicating the need for local inventories of this coleopteran family in the salvadoran territory. 

scholarly journals New records of benthic marine algae from Morocco (eastern Atlantic Ocean): morphology, taxonomy and distribution

2018 ◽  
Vol 43 ◽  
pp. 111-116
Author(s):  
Mustapha Hassoun ◽  
Hanaa Moussa ◽  
Ghizlane Salhi ◽  
Hanaa Zbakh ◽  
Hassane Riadi ◽  
...  
Keyword(s):  
Atlantic Ocean ◽  
New Record ◽  
Pacific Islands ◽  
New Records ◽  
Atlantic Coast ◽  
Marine Macroalgae ◽  
Eastern Coast ◽  
Western Coast ◽  
Eastern Atlantic Ocean ◽  
First Time

AbstractWe report new records and corological data for three Moroccan marine macroalgae that complete their distribution information. Radicilingua thysanorhizans is new record for Morocco; Champia compressa is recorded for the first time from the eastern coast of the Atlantic Ocean. Diplothamnion jolyi is widely distributed in the western coast of the Atlantic coast and Pacific Islands, and recently reported from the Mediterranean Sea; this new record from Moroccan Atlantic coast extends their distribution range.Key words: Algae, Atlantic Ocean, Champia compressa, Diplothamnion jolyi, Radicilingua thysanorhizans.ResumenSe aportan nuevos registros y datos corológicos para tres macroalgas marinas de Marruecos, que completan la información sobre su distribución. Radicilingua thysanorhizans es cita nueva para Marruecos. Champia compressa se registra por la primera vez en la costa oriental del Océano Atlántico. Diplothamnion jolyi se distribuye ampliamente en la costa occidental de la costa atlántica y las islas del Pacífico y ha sido recientemente citada en el mar Mediterráneo; esta nueva cita para costa Atlántica Marroquí amplia su rango de distribución.Palabras clave: Algae, Océano Atlántico, Champia compressa, Diplothamnion jolyi, Radicilingua thysanorhizans.

scholarly journals Dynamic of decapod crustacean larvae on the entrance of Guanabara bay

2002 ◽  
Vol 45 (4) ◽  
pp. 491-498 ◽  
Author(s):  
Lohengrin Dias de Almeida Fernandes ◽  
Sérgio Luiz Costa Bonecker ◽  
Jean Louis Valentin
Keyword(s):  
Reproductive Cycle ◽  
Seasonal Variations ◽  
Coastal Waters ◽  
Decapod Crustacean ◽  
Late Summer ◽  
Late Winter ◽  
Guanabara Bay ◽  
Tidal Cycles ◽  
Decapod Larvae

In the present study, we observed seasonal variations in the density of decapod larvae as well as changes in density related to diurnal and tidal cycles. Among the decapod larvae collected, portunids and grapsids were the most abundant, especially during nocturnal ebb tides and near the surface. The same results were obtained in late winter (September) and late summer (March). These results demonstrated a flow of decapod larvae from Guanabara Bay to adjacent coastal waters. Luciferid (Lucifer faxoni) was the only group with high densities during flood tides and we suggest this is an evidence of L. faxoni larvae entering Guanabara Bay in late winter. Probably these changes in distribution of Lucifer faxoni among winter and summer were related to reproductive cycle in the bay. For the portunids, grapsids and ocypodids, a similar dispersion strategy was observed towards adjacent coastal waters in the surface during nocturnal ebb tides.

scholarly journals II. The thermomagnetic analysis of meteoric and artificial nickel-iron alloys

1908 ◽  
Vol 208 (427-440) ◽  
pp. 21-109 ◽  
Keyword(s):  
Magnetic Field ◽  
Magnetic Properties ◽  
Quantitative Study ◽  
Published Data ◽  
Natural Origin ◽  
Nickel Iron ◽  
Thermomagnetic Analysis ◽  
Appreciable Quantity ◽  
Variable Permeability ◽  
Cosmic Origin

The experiments described in this paper arose from the desire of Sir Arthur W. Rücker to obtain, in connection with his researches on the nature of the Earth’s magnetic field, further data concerning the properties of such magnetic materials of natural origin as may he present in appreciable quantity in the Earth’s crust. Iron of cosmic origin contains nearly always an appreciable quantity of nickel, and the magnetic properties of this material, especially their variation with temperature, have received very little attention. Most of the published data are qualitative only, and from them no very definite conclusion can be drawn beyond the fact that meteoric iron appears to be of very variable permeability. It was, therefore, thought desirable to make a careful quantitative study of a typical example of such material.

scholarly journals Planktonic ciliates from an oligotrophic South Andean lake, Morenito Lake (Patagonia, Argentina)

2001 ◽  
Vol 61 (3) ◽  
pp. 389-395 ◽  
Author(s):  
B. E. MODENUTTI ◽  
G. L. PÉREZ
Keyword(s):  
Population Dynamics ◽  
South America ◽  
New Records ◽  
Late Summer ◽  
Abundant Species ◽  
Oligotrophic Lake ◽  
Summer Period ◽  
Planktonic Ciliates ◽  
Ciliate Species ◽  
Oligotrophic Condition

In this contribution we have studied the planktonic ciliates from Morenito Lake, an oligotrophic lake situated in the South Andes of Argentina. Six species that are new records for South America or Argentina are described and illustrated. Besides, population dynamics of the ciliate species were studied during a spring--summer period. Strobilidium lacustris and Balanion planctonicum were the most abundant species, showing a maximum in mid summer. Paradileptus elephantinus was present all over the period while Urotricha furcata was observed in late summer samples. Strobilidium lacustris and S. humile were found to be occasional species during the studied period. The recorded ciliate assemblage with oligotrichs and prostomates as dominant indicate the oligotrophic condition of the lake.

Water mites of the genus Sperchon Kramer (Acari: Hydrachnidia: Sperchontidae) from Turkey, with description of two new species

Zootaxa ◽  
2010 ◽  
Vol 2514 (1) ◽  
pp. 35 ◽  
Author(s):  
YUNUS ESEN ◽  
VLADIMIR PEŠIĆ ◽  
ORHAN ERMAN
Keyword(s):  
New Species ◽  
New Records ◽  
First Record ◽  
Mite Species ◽  
Published Data ◽  
Water Mites ◽  
Water Mite ◽  
Two New Species

A survey is given of the distribution of the water mite species of the genus Sperchon Kramer (Acari: Hydrachnidia: Sperchontidae) in Turkey, based on all published data and numerous new records. Sperchon (Hispidosperchon) oezkani and S. (Sperchon) ayyildizi are described as new species; Sperchon fundamentalis Bader & Sepasgozarian, 1980 is synonymized with S. glandulosus Koenike, 1886; the first record from Turkey is given for Sperchon (Hispidosperchon) tarnogradskii Sokolow, 1927.

The cattle lice of Great Britain Part II. Lice populations

Parasitology ◽  
1941 ◽  
Vol 33 (3) ◽  
pp. 343-358 ◽  
Author(s):  
H. J. Craufurd-Benson
Keyword(s):  
Great Britain ◽  
Seasonal Variations ◽  
Climatic Factors ◽  
Regional Distribution ◽  
Field Research ◽  
Rapid Decline ◽  
Research Station ◽  
Seasonal Fluctuations ◽  
Host Animal ◽  
June July

1. The seasonal variations and regional distribution of the cattle lice have been studied by monthly examinations of cattle at the Cooper Field Research Station.2. Additional evidence has been obtained by the distribution of a questionnaire to farmers, the general results of which are included in this paper.3. The seasonal variations of the populations of the four species of cattle lice in Great Britain are similar. The maximum population density is reached in February and March. In April and May there is a rapid decline until the populations reach their lowest level in June, July and August. In September, the lice start increasing in numbers till they reach their maximum density in February and March.4. The regional distribution of the population varies in accordance with the seasonal variations of the whole population.5. The various climatic factors that may affect the lice populations are discussed. It is considered that the light intensity is a factor of major importance in this country.6. The various factors inherent in the host animal are discussed, and it is suggested that the seasonal fluctuations of the density of the animal's coat are important.7. The finding of a previous paper (Craufurd-Benson, 1941) that the microclimatic temperature is important as affecting the hatching of eggs is discussed in relation to the variations of lice populations as a whole.

Studies on water mites of the family Hygrobatidae (Acari, Hydrachnidia) from Iran, I. The water mite genus Atractides Koch, with the description of five new species

Zootaxa ◽  
2004 ◽  
Vol 495 (1) ◽  
pp. 1 ◽  
Author(s):  
VLADIMIR PESIC ◽  
ALIREZA SABOORI ◽  
MAHDIEH ASADI ◽  
REZA VAFAEI
Keyword(s):  
New Species ◽  
New Records ◽  
Mite Species ◽  
Published Data ◽  
Water Mites ◽  
Water Mite ◽  
The Family ◽  
Mite Genus

This survey of the distribution of the water mite species (Acari: Hydrachnidia, Hygrobatidae) of the genus Atractides Koch in Iran is based on all published data so far and numerous new records. Five new species are described, viz. Atractides markaziensis Pesic, A. mossahebii Pesic, A. mirkopesici Pesic, A. gereckei Pesic, and A. nikooae Pesic; a first description is given for the male of Atractides cf. lunipes Lundblad, 1956; a redescription are given for Atractides baderi Schwoerbel & Sepasgozarian, 1976, Atractides nahavandii Schwoerbel & Sepasgozarian, 1976, and Atractides fluviatilis (Szalay, 1929); first records from Iran are given for Atractides acutirostris (Motas & C.Angelier, 1927), A. robustus (Sokolow, 1940) and A. inflatus (Walter, 1925).

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