Host Relations and Distribution of Species of Caeculisoma (Acarina, Erythraeidae) Parasitizing Grasshoppers in Australia, With Supplementary Information for the Genus Trombella (Trombellidae)

1990 ◽  
Vol 38 (1) ◽  
pp. 11 ◽  
Author(s):  
KHL Key

The geographical distribution and host relations of the two species of Caeculisoma whose larvae are known to parasitise adult grasshoppers (Caelifera) in Australia are described. Most of the data refer to C. darwiniense, with 207 specimens taken at 97 localities on 140 individual hosts belonging to 57 species. Its distribution probably extends over all but the south-eastern and south-western corners of mainland Australia. C. cooremani was recorded only from the central western coast of Western Australia. Only Acrididae of the subfamilies Catantopinae, Cyrtacanthacridinae, and Acridinae appear to be attacked. In C. darwiniense there is little evidence of discrimination in parasitisation of different host species or between the sexes. Most host individuals are parasitised by only a single mite. Some 80% of the mites were attached to the tegmen or wing, especially the latter. In this respect C. darwiniense differs radically from Trornbella cucumifera.

1970 ◽  
Vol 10 (42) ◽  
pp. 84 ◽  
Author(s):  
ML Poole ◽  
JW Gartrell

Ten annual Trifolium and Medicago cultivars were sown at low (1-6 lb an acre) and high (3-18 lb an acre) seeding rates with wheat crops in five trials in the south-eastern wheatbelt of Western Australia. Wheat and legume seed yields from these mixed stands were compared with stands of the same rates of wheat and legume sown alone. Sowing the legumes with the crop reduced wheat yields by from 7.4 bushels an acre (25 per cent) in one trial to 1.5 bushels an acre (5 per cent) in another. The evidence did not suggest which factors caused the different response. Legume seed production under the crop was severely reduced in all trials. In 30 of the 44 comparisons made it was reduced by more than 50 per cent, and in 13 cases by more than 75 per cent. In 9 cases the amount of seed set under the crop was less than 30 lb an acre. In most cases trebling the amount of legume seed sown under the crop greatly increased legume seed yield but caused only a small (less than one bushel per acre) further decrease in wheat yield.


2009 ◽  
Vol 54 (2) ◽  
Author(s):  
Gabriela Siquier ◽  
Margarita Núñez

AbstractThe present study describes a new species, Ligophorus uruguayense, parasitizing the gills of Mugil platanus Günther, 1880 from the coast of Uruguay. It differs from all other species of the genus mainly in the shape of the ventral bar, the thick process at the distal end of the inner root of ventral anchors, the J-shaped penis accessory piece and the vaginal tube showing transverse annulations at its distal end, the host species, and geographical distribution. This is the first description of a species of Ligophorus from a mullet in the South Atlantic Ocean.


2021 ◽  
Vol 17 (2) ◽  
pp. 428-454
Author(s):  
Olga V. Kladchenko

The settlement of Volna 12 was excavated in 2013– 2015, on the Taman Peninsula. The settlement is located on the south-western coast of the Taman Peninsula, 5.8 km north-west of the outskirts of the Volna village and 1.8 km north of Cape Panagia. The period of the settlement's existence falls on the late 17th (possibly the beginning of the 18th) – early 19th centuries. The settlement with an area of ​​31 hectares has been fully explored, so we have the opportunity to work with its materials in full. The previously unpublished ceramic material of the settlement - dishes and ceramic household items – is considered in the article by groups and categories. Particular attention is paid to non-glazed ceramics, which for a long time remained outside the interests of researchers. The article considers such categories of ceramic vessels as Aquarius, jugs, bowls, household vessels, braziers. The settlement did not exist for a very long period of time (about 100– 150 years), therefore, chronological differences in the ceramic material cannot be found. Obviously, it mainly comes from one or several centres of the South-Eastern Crimea, but the question of the centre of production of these vessels remains unresolved.


Check List ◽  
2018 ◽  
Vol 14 (4) ◽  
pp. 595-599
Author(s):  
Lourens H. Swanepoel ◽  
Daan Loock ◽  
Wayne S. Matthews ◽  
Kevin W. Emslie

The current geographical distribution of the Egyptian Mongoose or Large Grey Mongoose, Herpestes ichneumon (Linnaeus, 1758), in South Africa is limited to the south-eastern coastal and eastern sections of the country. One recent sighting in the central part of the country suggested a wider geographical distribution. In this study, we report on confirmed sightings of the Egyptian Mongoose on consecutive years in the central part (at Sasol’s Synfuels Plant in Secunda) of the country. Our sightings thus expand the distribution of the Egyptian Mongoose in South Africa to include some sections of the central to eastern part of the country.


2020 ◽  
Author(s):  
Julia Gorbunova ◽  
Boris Chubarenko

<p>Beach wrack (BW) – biological marine materials as algae, sea grasses and other, which are thrown from the sea to the seashore, becoming a polluter and cause of inconvenience. Problem of BW is present in the Kaliningrad Oblast of Russia, South-Eastern Baltic. From time to time, large amounts of BW appear in various places along its seashore. However, BW can be used as an organic resource, so nuisance could be converted into resource and asset. The study on BW spatial and quantitative distribution and its potential use in the South-Eastern Baltic is carry out within the Project #R090 CONTRA of the Interreg Baltic Sea Region Programme and accompanied by researches of algae species composition basing on partly support of the State assignment of IO RAS (Theme No. 0149-2019-0013).</p><p>An observations of the Baltic seashore within the Kaliningrad Oblast was carried out in March-December 2019 with the aim of quantity and quality characteristic of BW emissions. The BW emissions were recorded (measured, described and geo-referenced using GPS navigation) and sampled on two model sites monthly and the alongshore survey was carried out seasonally. Monitoring of the time of residence of the BW emissions was carried out three times per day at the selected model site using a web camera. It was found that the distribution of BW was characterized by significant spatial and temporal variability. In general, large amounts of BW emissions were observed on the northern coast of the Sambian Peninsula, in contrast to the western coast and Curonian and Vistula spits. The largest accumulations of BW were local and mainly near the coastline protrusions as capes (natural) and breakwaters, slipways, bunes (man-made). The time of residence of BW storage varied greatly and was often limited to a few days. Their further transformation could be carried out in several ways - by flushing back to the sea, covering under the thickness of sand or small pebbles, and a wind-wave dispersal along the beach. BW mainly contains Radophyta algae in the early spring and autumn-winter periods, in contrast to summer, when there are also Chlorophyta and Phaeophyta.</p><p>The preliminary estimations show that the industrial use of BW is limited by the spatial and temporal irregularity of their emissions in the Kaliningrad Oblast. However, the problem of BW collection and utilization exists. A possible solution could be use of BW for coastal protection greenery as nutrients that is similar to a natural process. These experiments were initiated in the Curonian Spit National Park in 2019. In this way BW could be involved in soft engineering techniques to manage the coastline.</p>


2006 ◽  
Vol 46 (7) ◽  
pp. 909 ◽  
Author(s):  
R. H. Jacob ◽  
D. W. Pethick ◽  
E. Ponnampalam ◽  
J. Speijers ◽  
D. L. Hopkins

Urine samples were collected from lambs slaughtered at 2 abattoirs, 1 in Western Australia (WA) and 1 in Victoria (Vic.), for the purpose of estimating hydration status at the time of slaughter. Collections were made from 219 consignments at WA and 57 consignments at Vic., over a 12-month period commencing in July 2003 and finishing in June 2004. The average consignment urine specific gravity was high, suggesting subclinical dehydration was common at both abattoirs. Consignment urine specific gravity was higher at Vic. than WA during the months from January to June. Analyses of demographic data collected at WA suggested that average consignment urine specific gravity was higher in sucker lambs than carry over lambs, highest in August and lowest in January, and higher in lambs from the south-eastern districts compared with other districts within the state.


1982 ◽  
Vol 33 (5) ◽  
pp. 917 ◽  
Author(s):  
BJ Richardson

Eight polymorphic loci were detected in a survey for electrophoretically detectable protein variation, carried out using liver samples from the Australian jack mackerel, T. declivis. The distribution of gene and genotype frequencies in sample sets from different areas shows that distinct subpopulations of the species occur in Western Australia and in New Zealand and that two or more geographically overlapping but genetically distinct subpopulations occur in the waters around south-eastern Australia.


PLoS ONE ◽  
2019 ◽  
Vol 14 (1) ◽  
pp. e0208619 ◽  
Author(s):  
Capri D. Jolliffe ◽  
Robert D. McCauley ◽  
Alexander N. Gavrilov ◽  
K. Curt S. Jenner ◽  
Micheline-Nicole M. Jenner ◽  
...  

2001 ◽  
Vol 2 (2) ◽  
pp. 33 ◽  
Author(s):  
M. UNSAL

Lead pollution and its sources have been investigated in the south-eastern and south-western Black Sea. Surficial sediments and mussels were collected in different seasons of the year from the south-eastern and south-western Black Sea and analysed for their lead contents.In the south-eastern Black Sea sediments from the easternmost and from the central stations contained the highest lead concentrations. Sediments contained 8 to 10 times the lead concentrations of sediments from the south-west. Samples taken from rivers, streams and effluents had especially high lead concentrations. The highest lead concentrations were found in sediments collected in October and December.Lead concentrations in mussels from the south-eastern coast were comparatively lower compared to those from the south-western coast. The highest average values occurred in December and in October.In the south-western Black Sea, the highest lead concentrations in sediments were obtained in those from Inebolu, followed by those from around Zonguldak. The concentrations increased from the middle to the west of the southern Black Sea coast, possibly due to the effect of the Danube River. Sediments taken in September had the highest lead concentrations, followed by samples taken in December.Very high lead concentrations (> 10 μ g g-1) were observed in mussels from those stations where the sediments also contained high concentrations. Mussels had their highest lead concentrations in January and April.


1924 ◽  
Vol 61 (2) ◽  
pp. 52-72 ◽  
Author(s):  
J. W. Gregory ◽  
L. R. Cox ◽  
Ethel D. Currie

The Aru Archipelago consists of a group of some eighty low islands which rise from the shallow sea between western New Guinea and Australia. They have been interpreted by Wichmann (1887, pp. 120–1) as the south-eastern members of an arc, to which he assigned also the Sula, Obi, and Misool Islands, and part of the south-western coast of New Guinea. This arc he regarded as the easternmost of three arcs at the eastern end of the Banda Sea. This view has been adopted, amongst others, by Koto (1899, p. 97, pl. i). The Aru Islands consist, according to the account in Verbeek's “Molukken Verslag” (1908, pp. 9, 464–5, fig. 420), of an almost horizontal limestone plateau, which has been broken by uplift into more than eighty pieces.


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