Sexual development and demography of the rock hind Epinephelus adscensionis, a protogynous grouper, in the south-west Atlantic

2018 ◽  
Vol 69 (2) ◽  
pp. 300
Author(s):  
Simone Marques ◽  
Beatrice P. Ferreira
Keyword(s):  
Sexual Development ◽  
East Coast ◽  
Growth Parameters ◽  
Gonadosomatic Index ◽  
Export Markets ◽  
Spawning Period ◽  
Growth Coefficient ◽  
Multiple Spawning ◽  
North East ◽  
The North

This study reports on the pattern of sexual development and demography of Epinephelus adscensionis sampled on the north-east coast of Brazil. The species is a protogynous hermaphrodite, with males (26–44-cm total length, TL) transitioning from mature females (20–33cm TL). This species presented multiple spawning, with peaks in the gonadosomatic index indicating that the spawning period of the rock hind occurred along 3 months per year, where for 2008 was between August and October, and for 2009 was between July and September. Age was determined from otoliths and periodicity was validated from captive fish treated with tetracycline. The resulting von Bertalanffy growth parameters were as follows: theoretical maximum length (L∞) 34.82cm TL, growth coefficient (k) 0.26 and theoretical age at L=0 (t0) 0.86years. The size and age at sexual maturity for females were 20cm TL and 4 years. The total rate of mortality was 0.28year–1. Older fish were males and had a maximum longevity of 15 years. This species is an important resource for local communities, but is also currently caught by trap fisheries, which have been expanding in recent decades in response to demands of export markets. Lack of monitoring and management of these and other reef fisheries in north-east Brazil makes fishing sustainability uncertain.

II.—Further Notes on the Petrography of South Georgia

1916 ◽  
Vol 3 (10) ◽  
pp. 435-441 ◽  
Author(s):  
G. W. Tyrrell
Keyword(s):  
East Coast ◽  
The South ◽  
South Georgia ◽  
South Eastern ◽  
North East ◽  
The North ◽  
New Material ◽  
Rock Specimens

The new material on which this paper is based has lately been received through Mr. D. Ferguson, who recently investigated the geology of the island, and collected the rocks described in an earlier paper. It consists of twenty-seven rock specimens from the south-eastern end of the island, between Cape Disappointment and Cooper Island, and nine specimens from Gold Harbour on the north-east coast between Cooper Island and Royal Bay. All these were collected by the staff of the South Georgia Co., Ltd., under the instructions of Mr. Th. E. Salvesen, managing director, of Leith.

Redescription of Pseudogilquinia pillersi (Southwell, 1929) (Cestoda, Trypanorhyncha) from serranid and lethrinid fishes from New Caledonia and Australia

2007 ◽  
Vol 52 (3) ◽  
Author(s):  
Ian Beveridge ◽  
Claude Chauvet ◽  
Jean-Lou Justine
Keyword(s):  
Sri Lanka ◽  
Host Range ◽  
East Coast ◽  
New Caledonia ◽  
Epinephelus Coioides ◽  
North East ◽  
The North ◽  
Specific Variation ◽  
Epinephelus Malabaricus

AbstractPseudogilquinia pillersi (Southwell, 1929), a poorly known species of trypanorhynch, is redescribed from plerocerci collected from Epinephelus coioides (Hamilton, 1922), Epinephelus malabaricus (Bloch et Schneider, 1801) (Serranidae) and Plectropomus laevis (Lacépède, 1801) (Serranidae) off New Caledonia. These were compared with specimens from Lethrinus atkinsoni Seale, 1910 and Lethrinus miniatus (Forster, 1801) (Lethrinidae) off the north-east coast of Australia as well as syntypes from Protonibea diacantha (Lacépède, 1802) from Sri Lanka. Although size differences were found in parts of the scolex as well as in the sizes of the tentacular hooks, the hook arrangements were identical in all specimens. The differences observed were attributed provisionally to intra-specific variation across a wide geographic and host range.

Information about Antimalarial Chemoprophylaxis in Hospitalised Patients — Is it Adequate?

1997 ◽  
Vol 42 (1) ◽  
pp. 13-15 ◽  
Author(s):  
D. Nathwani ◽  
J Spiteri
Keyword(s):  
Public Health ◽  
Plasmodium Falciparum ◽  
East Coast ◽  
Central Africa ◽  
Public Health Problem ◽  
Oil Boom ◽  
North East ◽  
The North ◽  
Hospitalised Patients ◽  
The Uk

Malaria remains a huge public health problem worldwide, with over 100 million new cases annually, causing one to two million deaths.1 This global problem spills over into the UK, with around 2000 cases of reported annually.2 The proportion of infections due to Plasmodium falciparum (PF) continues to increase and worse still accounts for five to 12 deaths per year. In 1992, Nathwani et al reported the 10 year experience of malaria cases admitted to the Regional Infection Unit, in Aberdeen, Scotland-the “Oil Capital”.3 This study was of interest in that 46% of those British residents who acquired infection had travelled to West or Central Africa on oil related business. The Oil boom of the 1980‘ s appeared to very much centred around Aberdeen and the neighbouring hinterland but did not appear to extend to Dundee which was only 60 miles further down the North-East coast. We, therefore, carried out a retrospective study of patients with malaria admitted to the Regional Infectious Diseases Unit in Dundee over a fifteen year period between 1980 and 1994.

Chapter Eight

2008 ◽  
Author(s):  
Jonathan Swift
Keyword(s):  
East Coast ◽  
North East ◽  
The North

The Author, by a lucky Accident, finds Means to leave Blefuscu; and, after some Difficulties, returns safe to his Native Country. Three days after my Arrival, walking out of Curiosity to the North-East Coast of the Island; I observed, about half a League...

scholarly journals Late Holocene temperature variability in Tasmania inferred from borehole temperature data

2017 ◽  
Vol 13 (6) ◽  
pp. 559-572 ◽  
Author(s):  
Asadusjjaman Suman ◽  
Fiona Dyer ◽  
Duanne White
Keyword(s):  
East Coast ◽  
Past Century ◽  
Borehole Data ◽  
Depth Profiles ◽  
The Past ◽  
North East ◽  
The North ◽  
Borehole Temperature ◽  
Temperature Depth

Abstract. Thirty-six borehole temperature–depth profiles were analysed to reconstruct the ground surface temperature history (GSTH) of eastern Tasmania for the past 5 centuries. We used the singular value decomposition method to invert borehole temperatures to produce temperature histories. The quality of borehole data was classified as high or low based on model misfit. The quality of the borehole data was not dependent on topography or land use. Analysis reveals that three to five high-quality borehole temperature–depth profiles were adequate to reconstruct robust paleotemperature records from any area. Average GSTH reconstructed from Tasmanian boreholes shows temperature increases about 1.2 ± 0.2 °C during the past 5 centuries. Reconstructed temperatures were consistent with meteorological records and other proxy records from Tasmania during their period of overlap. Temperature changes were greatest around the north-east coast and decreased towards the centre of Tasmania. The extension of the East Australian Current (EAC) further south and its strengthening around the north-east coast of Tasmania over the past century was considered a prime driver of warmer temperatures observed in north-east Tasmania.

The Occurrence of the New Nolland Mouse, Pseudomys novaehollandiae (Waterhouse), in Tasmania

1980 ◽  
Vol 7 (1) ◽  
pp. 71 ◽  
Author(s):  
GJ Hocking
Keyword(s):  
East Coast ◽  
Fire Regime ◽  
Reproductive Status ◽  
North East ◽  
The North ◽  
Close Relationship ◽  
First Time

Pseudomys nocaehollandiae is recorded for the first time from Tasmania, where it is found to occur in heath and woodland along the north-east coast. The morphological and reproductive status of the specimens collected and their habitat are essentially the same as previously recorded on continental Australia. The close relationship between the distribution of this species and the occurrence of a particular fire regime is stressed.

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