Diets of deepwater oreos (Oreosomatidae) and orange roughy Hoplostethus atlanticus

2016 ◽  
Vol 88 (6) ◽  
pp. 2275-2302 ◽  
Author(s):  
J. S. Forman ◽  
P. L. Horn ◽  
D. W. Stevens
Keyword(s):  
Orange Roughy ◽  
Hoplostethus Atlanticus

scholarly journals Size‐fecundity relationships in the orange roughy,Hoplostethus atlanticus

1987 ◽  
Vol 21 (2) ◽  
pp. 295-299 ◽  
Author(s):  
N. W. Pankhurst ◽  
A. M. Conroy
Keyword(s):  
Orange Roughy ◽  
Hoplostethus Atlanticus

Avoidance of a camera system by a deepwater fish, the orange roughy (Hoplostethus atlanticus)

1995 ◽  
Vol 42 (2) ◽  
pp. 233-244 ◽  
Author(s):  
J.Anthony Koslow ◽  
R. Kloser ◽  
C.A. Stanley
Keyword(s):  
Orange Roughy ◽  
Camera System ◽  
Hoplostethus Atlanticus

Age determination and growth of orange roughy (Hoplostethus atlanticus): a comparison of annulus counts with radiometric ageing

1995 ◽  
Vol 52 (2) ◽  
pp. 391-401 ◽  
Author(s):  
David C. Smith ◽  
Simon G. Robertson ◽  
Gwen E. Fenton ◽  
Stephen A. Short
Keyword(s):  
Age Determination ◽  
Percentage Reduction ◽  
Age At Maturity ◽  
Otolith Growth ◽  
Two Stage ◽  
Orange Roughy ◽  
Mass Growth ◽  
Hoplostethus Atlanticus ◽  
Age Estimates ◽  
Radiometric Data

Ages of orange roughy (Hoplostethus atlanticus) determined by two methods (counting annuli on the surface of whole and in longitudinally sectioned otoliths) were similar up to maturity. Beyond maturity, age estimates from sectioned otoliths exceeded those from whole otoliths. Maximum recorded age was 125 years for an individual 41 cm standard length (SL), and age at maturity was estimated to be 25 years (30–32 cm SL). These are consistent with ages estimated previously by radiometric methods. Results demonstrated a two-stage linear relationship between otolith weight and age that confirmed the two-stage otolith mass growth model previously used in radiometric ageing. However, in the radiometric analyses the reduction in otolith growth was arbitrarily estimated at 45% of the immature rate whereas annuli data demonstrated a reduction after maturity to 62% of the immature rate. The new estimates of otolith mass growth rate were incorporated into the radiometric data and ages recalculated, which reduced age estimates for 38–40 cm SL fish from 77–149 to 59–101 years. The radiometric data were also recalculated using only the percentage reduction in otolith growth after maturity, giving the radiometric age of 125 ± 9 years for the oldest fish.

Spatial variation in reproduction, and occurrence of non-reproductive adults, in orange roughy, Hoplostethus atlanticus Collett (Trachichthyidae), from south-eastern Australia

1992 ◽  
Vol 40 (1) ◽  
pp. 107-122 ◽  
Author(s):  
J. D. Bell ◽  
J. M. Lyle ◽  
C. M. Bulman ◽  
K. J. Graham ◽  
G. M. Newton ◽  
...  
Keyword(s):  
Spatial Variation ◽  
Orange Roughy ◽  
South Eastern ◽  
Eastern Australia ◽  
Hoplostethus Atlanticus ◽  
South Eastern Australia

scholarly journals Genomic data suggest environmental drivers of fish population structure in the deep sea: A case study for the orange roughy ( Hoplostethus atlanticus )

2019 ◽  
Vol 57 (2) ◽  
pp. 296-306 ◽  
Author(s):  
Anders Gonçalves da Silva ◽  
William Barendse ◽  
James Kijas ◽  
Phillip R. England ◽  
A. Rus Hoelzel
Keyword(s):  
Population Structure ◽  
Deep Sea ◽  
Genomic Data ◽  
Fish Population ◽  
Environmental Drivers ◽  
Orange Roughy ◽  
Hoplostethus Atlanticus ◽  
Fish Population Structure

The composition of orange roughy (Hoplostethus atlanticus) roe lipids

1985 ◽  
Vol 36 (8) ◽  
pp. 679-684 ◽  
Author(s):  
Denis R. Body
Keyword(s):  
Orange Roughy ◽  
Hoplostethus Atlanticus

Analysis of bycatch in the fishery for orange roughy, Hoplostethus atlanticus, on the South Tasman Rise

2003 ◽  
Vol 54 (5) ◽  
pp. 643 ◽  
Author(s):  
Owen F. Anderson ◽  
Malcolm R. Clark
Keyword(s):  
Fishing Effort ◽  
Trial Data ◽  
The South ◽  
Orange Roughy ◽  
Stony Coral ◽  
Number Of Species ◽  
Coefficients Of Variation ◽  
Species Groups ◽  
Hoplostethus Atlanticus

Government fisheries observers made detailed records of the catch weights of all species caught on 545 trawls between October 1997 and August 2000 in the South Tasman Rise orange roughy (Hoplostethus atlanticus) fishery. Bycatch ratios, the ratio of bycatch weight to tow duration, were derived from these data and used to make estimates of total annual bycatch for several species groups. Bycatch ratios based on tow duration were chosen over ratios based on orange roughy catch weights after comparing the coefficients of variation (c.v.) of sets of trial data. Bycatch ratios and total bycatch were estimated for three species of oreos (Oreosomatidae), corals and all other bycatch species combined, for the fishing years from 1997–1998 to 2000–2001. Total oreo bycatch dropped from about 7400 t to less than 350 t during this time. These estimates agreed well with recorded oreo landings data for three of the four years. There was a considerable bycatch of corals, with both the bycatch ratio and the total bycatch reducing during the period examined, the latter from about 1750 t to 100 t per year. The coral bycatch comprised a large number of species, but was dominated by the reef-forming stony coral Solenosmilia variabilis. Annual bycatch of all other species combined, mainly rattails (Macrouridae) and dogfishes (Squalidae), was low (13–120 t). Bycatch of this group dropped sharply in each year as the result of a combination of decreasing bycatch ratio and decreasing fishing effort.

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