Structure and diversity of the lobster community on the Amazon continental shelf

Crustaceana ◽  
2013 ◽  
Vol 86 (9) ◽  
pp. 1084-1102 ◽  
Author(s):  
K. C. A. Silva ◽  
R. Cruz ◽  
I. H. A. Cintra ◽  
F. A. Abrunhosa
Keyword(s):  
Community Structure ◽  
Continental Shelf ◽  
Rainy Season ◽  
Bottom Trawl ◽  
Panulirus Argus ◽  
Muddy Sand ◽  
Southern Sector ◽  
The North ◽  
Two Sectors ◽  
Northern Sector

The present study analyses the diversity and community structure of the lobsters captured using bottom trawl shrimp nets at depths of 41 to 626 m during fishery prospection cruises conducted between 1996 and 1998. The study area encompasses the coasts of the Brazilian states of Amapá and Pará, which were divided into two sectors, to the north and to south of Cape North. The 44 lobster specimens identified belonged to nine species: Acanthacaris caeca (A. Milne-Edwards, 1881), Nephropsis aculeata Smith, 1881, Nephropsis rosea Bate, 1888, Palinustus truncatus A. Milne-Edwards, 1880, Panulirus argus (Latreille, 1804), Parribacus antarcticus (Lund, 1793), Polycheles typhlops Heller, 1862, Scyllarides delfosi Holthuis, 1960 and Stereomastis sculpta (Smith, 1880). The specimens were captured preferentially on muddy sand substrates in the northern sector and gravelly and muddy sand in the southern sector. All species were more common in the northern sector during the dry season (June-November), and in the southern sector in the rainy season (December-May).

scholarly journals Distribuição e abundância de isópodes gigantes Bathynomus (Crustacea, Isopoda, Cirolanidae) da Plataforma Continental Amazônica

2020 ◽  
Vol 9 (8) ◽  
pp. e974986843
Author(s):  
Katia Cristina de Araújo Silva ◽  
Fernando Araújo Abrunhosa ◽  
Rafael Anaisce das Chagas ◽  
Marko Herrmann ◽  
Israel Hidenburgo Aniceto Cintra
Keyword(s):  
Continental Shelf ◽  
Rainy Season ◽  
Dominant Species ◽  
Dry Season ◽  
Exclusive Economic Zone ◽  
Community Based ◽  
Southern Sector ◽  
Economic Zone ◽  
Northern Sector

The present study focuses on the distribution and abundance of the giant isopod community, based on specimens collected using the bottom shrimp trawling on the Amazon continental shelf during fishery surveys, at depths between 81 m and 626 m, conducted during the REVIZEE/Score-North Program between 1996 and 1998. The study area is located within the exclusive economic zone of Brazil, between the States of Amapá and Pará. In total, 170 specimens were collected, distributed in the two species Bathynomus giganteus (n = 49) and Bathynomus miyarei (n = 121), in which 54% of the material were collected in the northern and 46% in the southern sector of the study area. B. miyarei was considered to be the dominant species in both sectors, whereas B. giganteus was uncommon in the northern sector, but abundant in the southern sector.  Both species preferred gravelly bottoms in the northern sector, and gravelly sand in the southern sector and were more abundant during the dry season in the northern sector, but during the rainy season in the southern sector. The smallest female B. giganteus was collected in the northern sector, and the largest in the southern sector, whereas both the largest and the smallest female B. miyarei were captured in the southern sector. All the male specimens collected in this study were captured in the northern sector.

A river port and emporion in Central Bulgaria: an interim report on the British project at Vetren

2002 ◽  
Vol 97 ◽  
pp. 309-351 ◽  
Author(s):  
Zofia H. Archibald ◽  
Ark Adams ◽  
Sue Ovenden ◽  
Sue Stallibras
Keyword(s):  
Land Use ◽  
Body Parts ◽  
Interim Report ◽  
Southern Sector ◽  
Residential Use ◽  
North And South ◽  
Two Sectors ◽  
East West ◽  
Geophysical Prospection ◽  
Northern Sector

In 1999, fieldwork was resumed by the British team at Adzhiyska Vodenitsa, Vetren, the site of an inlandemporionwhich has been identified with ancient Pistiros (SEG43. 486, 46. 872*). Excavations were conducted on the terrace with architectural remains in two sectors, north and south of the main east-west road. In the northern sector, 22 pits were investigated. The faunal material from these pits reveals specific butchering methods and the re-articulation of complete body parts following butchery. Among the finds aregraffition pottery, including a votive inscription to Zeus. In the southern sector, there are traces of residential use. The report includes an account of geophysical prospection to determine the nature of land use beyond the terrace, with evidence suggesting that the settlement was directly adjacent to the River Maritsa (ancient Hebros).

TAXON DIVERSITY AND COMMUNITY STRUCTURE OF FOSSIL MOLLUSCAN ASSEMBLAGES FROM THE MID-ATLANTIC CONTINENTAL SHELF (USA)

2018 ◽  
Author(s):  
Carmi Milagros Thompson ◽  
◽  
Rowan Lockwood ◽  
E.N. Worthington ◽  
Kelvin W. Ramsey
Keyword(s):  
Community Structure ◽  
Continental Shelf

The Recent Cypraeidae of Northern New Zealand from the Kermadec Islands to the Poor Knights Islands, Southwest Pacific Ocean (Mollusca: Gastropoda: Cypraeidae)

The Festivus ◽  
2018 ◽  
Vol 50 (1) ◽  
pp. 36-54
Author(s):  
John Daughenbaugh
Keyword(s):  
New Zealand ◽  
Pacific Ocean ◽  
Continental Shelf ◽  
East Coast ◽  
Species Distributions ◽  
East Side ◽  
Tropical Eastern Pacific ◽  
The North ◽  
The Poor ◽  
Coastal Shelf

For researchers, isolated regions at the periphery of species’ distributions hold a peculiar fascination. The causes of their remoteness vary based on: distance (e.g. the Tropical Eastern Pacific), distance and countervailing currents (e.g. the Marquesas), location in a present day gyre (e.g. the Pitcairn Group) or the absence of present day means of veliger transport (e.g. the Vema Seamount). (Daughenbaugh & Beals 2013; Daughenbaugh 2015a & b, 2017). The northern New Zealand Region from the Kermadec Islands (Kermadecs) to the coastal and shelf areas in the northernmost part of New Zealand’s North Island (Northland), including the Poor Knights Islands (PKI), constitute the distributional boundaries for a number of Cypraeidae species. The boundaries are the result of the absence of coastal shelves along the east side of the Kermadec Ridge (Ridge) and precipitous drops to abyssal depths along Northland’s east coast continental shelf. Tropical waters, with their potential to transport Cypraeidae larvae, flow eastward from southern Queensland, Australia, entrained in the Tasman Front which terminates when reaching North Cape, the northernmost tip of Northland. There, the North Cape Eddy captures most of this flow while the remainder, the East Auckland Current (EAUC), flows intermittently southward along the eastern coastal, shelf and offshore areas of Northland into waters incapable of supporting Cypraeidae populations.

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