Search results
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Discrimination Between Larval and Juvenile Specimens of Euphausia superba from Gut Contents
Abstract: Based on the change in the allometric relations between the antennular spine and body ... length in the passage from Furcilia VI to juvenile in Euphausia superba lineal discriminant functions ... resulted highly correlated (R=0.95); allowing the use of the method when body length is not available ...
Meeting Document : WG-CEMP-89/17 : Author(s): E. Marschoff and M. Ravaglia (Argentina)
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Review of skate (Rajiformes) by-catch in CCAMLR toothfish fisheries
Abstract: Available data on the by-catch of Rajiformes was extracted from the CCAMLR database ... spatial ranges for some species. The data collected as part of CCAMLR fisheries represents a very ... substantial repository of information on Southern Ocean Rajiformes; realising the full potential of this data ... will require a review of the consistency and accuracy of identification of taxa and this might be a ...
Meeting Document : WG-FSA-14/12 : Author(s): Secretariat
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Annual report of research fishing operations at Subarea 48.6 in 2016/17 fishing season
Abstract: This paper represents the annual report of a multi-member longline survey on Antarctic ... Africa. The data set, C2 and Oｂserver data, was provided by the CCAMLR Secretariat on the 20th of April ... , 2018. In this paper, the data set during last fishing season (2016/17) was used for reporting the ...
Meeting Document : WG-SAM-18/32 : Author(s): Delegations of Japan and South Africa
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STRONG EFFECTS OF ENVIRONMENTAL CONDITIONS ON REPRODUCTIVE SUCCESS OF PENGUINS AT KING GEORGE ISLAND
variability in the reproductive success of Adélie, gentoo, and chinstrap penguins can be explained by simple ... selected by step-wise model fitting procedures corresponded to the incubation periods for each species. Sea ... ice extent measured during the winter prior to breeding also appears to be an important predictor of ... reproductive success in all species. Biological variables measured during the chick-rearing phase, like krill ...
Meeting Document : WG-EMM-09/43 : Author(s): J. Hinke, C. Reiss and W. Trivelpiece (USA)
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EXPECTED TAG RECAPTURE RATES FROM NEW AND EXPLORATORY FISHERIES FOR DISSOSTICHUS SPP.
Abstract: Tag recapture rates in new and exploratory Dissostichus spp. fisheries in the southern ... Indian Ocean sector of the CCAMLR area are examined. In particular, the potential for tagging programs in ... new and exploratory fisheries to yield sufficient data to be of use in determining TAC’s in the early ... , tag detection rates, natural mortality, fish movement out of the fishery, and IUU removals in order to ...
Meeting Document : WG-FSA-08/63 : Author(s): J.P. McKinlay and D.C. Welsford (Australia)
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Collection, processing and potential use of sonar data from krill fishing vessels
vessels. The purpose of this paper is to stimulate discussion on the utility of sonars to describe krill ... within a survey area and to consider the metrics (descriptors) we outline in the paper. We hope the ... outcome of our discussions will facilitate the use of sonar data collected from a variety of vessels and ... sonar types by providing guidance on the operation, sonar system settings, and data analysis techniques ...
Meeting Document : SG-ASAM-14/01 : Author(s): G. Skaret (Norway) and M.J. Cox (Australia)
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Fishing ground selection in krill fishery: trends in its patterns across years, seasons, and nations
scale data. Among the 15 SSMUs within Areas 48.1, 48.2 and 48.3 including the pelagic SSMUs, only one ... third of them were identified as the main contributors to the total catch. A shift of operational timing ... seasonal SSMU selection were characterized by following the result of cluster analysis. Frequently used ... SSMUs did not always match the areas of high krill densities observed by scientific surveys, and ...
Meeting Document : WG-EMM-05/28 : Author(s): S. Kawaguchi (Australia), K. Taki and M. Naganobu (Japan)
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IDENTIFYING PATTERNS IN DIET OF MACKEREL ICEFISH (CHAMPSOCEPHALUS GUNNARI) AT SOUTH GEORGIA USING BOOTSTRAPPED CONFIDENCE INTERVALS OF A DIETARY INDEX
was dominated by krill, Euphausia superba and by the amphipod Themisto gaudichaudii. Smaller (younger ... -2004) the proportion of krill in the diet, stomach fullness and fish condition (indicated by length ... -weight relationships) were significantly lower than in the other summer seasons. The poor krill season ... was followed by a large reduction (> 80%) in the estimated annual biomass of C. gunnari the ...
Meeting Document : WG-FSA-08/29 : Author(s): C.E. Main, M.A. Collins, R. Mitchell and M. Belchier (UK)
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Aggregation patterns of pelagic predators and their principal prey, Antarctic krill, near South Georgia
Abstract: 1. We examine the spatial distributions of pelagic seabirds and. fur seals near South ... Georgia, and asked to what extent the distributions of these predators were influenced by the spatial ... is an explicit consideration of the separation in space between swarms of krill and aggregations of ... survey of the waters surrounding Bird Island, South. Georgia. Predator abundance was estimated visually ...
Meeting Document : WG-CEMP-93/13 : Author(s): R.R. Veit (USA), E.D. Silverman (USA) and I. Everson (United Kingdom)
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Diving pattern and performance in nonbreeding gentoo penguins (Pygoscelis papua) during winter
organization during the foraging trip) in relation to diet in nonbreeding Gentoo Penguins (Pygoscelis papua ... diurnal with 98% of foraging trips completed during the same day. Foraging-trip frequency was 0.8/day ... , trip duration was 6-8 h, and birds spent 51-62% of the foraging trip diving. Dive depth and duration ... -3.5 min, respectively. Deep-dive duration exceeded the subsequent surface interval, but shallow dives ...
Meeting Document : WG-CEMP-92/37 : Author(s): T.D. Williams (United Kingdom), A. Kato (Japan), J.P. Croxall (United Kingdom), Y. Naito (Japan), D.R. Briggs, S. Rodwell and T.R. Barton (United Kingdom)