Search results
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Sexing of adult Adélie penguins by discriminant analysis of morphometric measurements
shift). It was found that the combination of flipper breadth, bill depth and length of the middle toe ... ). It was found that the combination of flipper breadth, bill depth and length of the middle toe gave the most ... incubation shift). It was found that the combination of flipper breadth, bill depth and length of the middle ... del pico, tambien proporcion6 buenos resultados (80% certeza). 1. IN1RODUCTION Penguins do ... ), flipper breadth at the widest point near the cubito-carpal joint (FB), length of the middle toe including ... breadth) and LM (length of the middle toe). These three variables are un correlated and all have higher ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 543–549 : Author(s): Scolaro, J.A., Z.B. Stanganelli, H. Gallelli and D.F. Vergani
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Age–length composition of mackerel icefish (Champsocephalus gunnari, Perciformes, Notothenioidei, Channichthyidae) from different parts of the South Georgia shelf
the eastern, northern, western and southern parts of the shelf, and near Shag Rocks, revealed a similar age ... . Differences were observed between those those two groups and the eastern group. The larger number of mature ... fish in the west is related to the migration of maturing individuals from the eastern and western parts ... and age groups over the eastern, northern, western and southern parts of the shelf, and near Shag Rocks ... . An analysis of the spatial distribution of C. giirzrznri size and age groups over the eastern, northern ... in the west is related to the migration of maturing individuals from the eastern and western parts ... of the C. ~ z l n ~ z a r i fishery (1970s), The proportion of youllg fish in commercial only the eastern part of the shelf war ... in the eastern and was also observed in near-bottom depth strata: northeastern parts of the shelf affected ...
Science Journal Paper : CCAMLR Science, Volume 8 (CCAMLR Science, Volume 8) : 133–146 : Author(s): Frolkina, G.A
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Krill distribution in the western Atlantic sector of the Southern Ocean during 1983/84, 1984/85 and 1987/88 based on the results of Soviet mesoscale surveys conducted using an Isaacs-Kidd midwater trawl
stretching from the Antarctic Peninsula to the eastern part of the South Orkneys area. The greatest ... of water flow from southern areas). It is also demonstrated that the absence of krill in the eastern part ... to the eastern part of the South Orkneys area. The greatest variability of krill distribution on the spatial ... demonstrated that the absence of krill in the eastern part of the Scotia Sea may cause it to be absent from ... stretching from the Antarctic Peninsula to the eastern part of the South Orkneys area. The greatest ... of water flow from southern areas). It is also demonstrated that the absence of krill in the eastern part ... the Antarctic Peninsula to South Georgia, including Bransfield Strait, South Orkney Islands and the eastern ... meridional sections, located to the north of the island, then sailed to the eastern part of the Scotia Sea ...
Science Journal Paper : CCAMLR Science, Volume 6 (CCAMLR Science, Volume 6) : 59–70 : Author(s): Sushin, V.A. and K.E. Shulgovsky
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Further computations of the consequences of setting the annual krill catch limit to a fixed fraction of the estimate of krill biomass from a survey
~ 0 3 ~ c n n y a ~ a 1 . ~ w o ~ ~ o r o YPOBHR (K'"), KaK ( ~ ) Y H K J & ~ R AOnM OqeHKM ~ H O M ~ C C ~ I , KOTOPaR YCTaHOBneHa KaK BbIn ... t s which they obta ined were MoDIFICAT1oNS part icularly sensi t ive to values assumed for natural ... in the middle of the growth season as for model 1 (i.e., in mid-December: t = 1.5/12). As M now varies ... the balance of the 'year' (growth having ceased): In the middle of the growth season their mass-at-age ... relate potential krill yield to a pre-exploitation survey estimate of krill biomass. In this paper, the ... fishing mortality, as specified by the Fourth Meeting, results in marked reductions in the probabilities ...
Science Journal Paper : CCAMLR Science, Volume 1 (CCAMLR Science, Volume 1) : 81–106 : Author(s): Butterworth, D.S., G.R. Gluckman, R.B. Thomson, S. Chalis, K. Hiramatsu and D.J. Agnew
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Interaction of marine mammals with the longline fishery around the Kerguelen Islands (Division 58.5.1) during the 1995/96 cruise
occurred, as against 2.2 % of fish lost from the hooks during line hauling. File: 12capdeville.pdf ... during the longline sets in which interaction occurred, as against 2.2 % of fish lost from the hooks ... lost from the hooks during line hauling. Resume Les interactions observees entre les palangriers ... feed on toothfish lost from the hooks during hauling (21 fish were eaten out of 70 lost); fur seals ... of toothfish landed (X = -0.03, p = 0.91) and of the number of toothfish lost from hooks during hauling ... than the number of fish lost from the hooks during line hauling (2.2% for the same longline sets ...
Science Journal Paper : CCAMLR Science, Volume 4 (CCAMLR Science, Volume 4) : 171–174 : Author(s): Capdeville, D
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Age and growth of Antarctic euphausiacea (crustacea) under natural conditions
Peninsula and the south-eastern Weddell Sea. Life spans range from two years for Euphausia frigida to six ... and the eastern Weddell Sea. Former opinions that differ are discussed. Seasonal growth was re-analyzed ... and the south-eastern Weddell Sea. Life spans range from two years for Euphausia frigida to six years ... . No difference in growth of krill was observed between the Antarctic Peninsula area and the eastern Weddell Sea ... and the south-eastern Weddell Sea. Life spans range from two years for Euphausia frigida to six years ... . No difference in growth of krill was observed between the Antarctic Peninsula area and the eastern Weddell Sea ... 3TOi TOQKH 3peHHH. SbIn 3aHOBO npoaHanH3HpoBaH ce30HHbli POCT AnH BHAa Euphausia triacantha ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/4 (Selected Scientific Papers, SC-CAMLR-SSP/4) : 369-370 : Author(s): Siegel, V.
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Distribution of mackerel icefish (Champsocephalus gunnari) (Channichthyidae) around South Georgia at various stages of its life cycle
. Peak catches were obtained in the middle of the day. At dusk fi sh aggregations ascended ... and in shallow waters off Shag Rocks. It should be noted that only on the eastern shelf were fi sh ... m, and middle-sized and large fi sh at depths of more than 200 m. At the same time, pre-spawning fi sh were ... caught in the northern and eastern areas of the shelf. Fish outside this length range were ... cm in length) were mainly found in the southern part of the study area, immature fish (15–25 cm) in ... the east and southwest, and adults (25–39 cm) in the north. The distribution of C. gunnari changes ... bottom during the day and in the water column at night. Larger fish (>40 cm) did not undertake ... vertical migrations. Variations found in the depth distribution of C. gunnari relate both to fish length ...
Science Journal Paper : CCAMLR Science, Volume 9 (CCAMLR Science, Volume 9) : 49–69 : Author(s): Frolkina, Zh.A
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Estimating unaccounted fishing mortality in the Ross Sea region and Amundsen Sea (CCAMLR Subareas 88.1 and 88.2) bottom longline fisheries targeting Antarctic toothfish
unaccounted fishing mortality from lost lines in these fisheries is provided. These estimates suggest ... unaccounted fishing mortality from lost lines in these fisheries is provided. These estimates suggest ... assessments (SC-CAMLR, 2007a; Dunn and Hanchet, 2009; Mormede et al., 2011a, 2011b). Lost fishing gear ... ., 2009). However, few studies provide quantitative estimates of unaccounted mor- tality caused by lost ... longline gear is most often lost due to interactions of downlines (lines connecting surface floats ... hooked on lost lines is unknown. Lost gear is currently reported in order to evalu- ate how well CCAMLR ...
Science Journal Paper : CCAMLR Science, Volume 19 (CCAMLR Science, Volume 19) : 17–30 : Author(s): Webber, D.N. and S.J. Parker
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Preliminary appraisal of Antarctic fish selection by the 32/36 bottom trawl combined with various codends
BblCB060Al1TbCH 113 KYTKa. CeJIeKTI1BHble - 3 - cnoco6HOCTif 060HX neHTO'IHblX KYTKOB 6bInH ropa3Ao nY'IWe ... , reaching down to the middle of the codend side walls. The codend bottom was deprived of its selective ... properties up to the middle of side walls by placing inside it, the same fine-meshed inset. In this way ... was the badly chosen mesh size, which had lost selectivity ability for this species, and the double-layer ... . It was found that the selectivity properties of twine codends are unsatisfactory in the case of ... used in fishing for them requires further research. It should first of all cover twine codends with a ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/4 (Selected Scientific Papers, SC-CAMLR-SSP/4) : 1-48 : Author(s): Zaucha, J.
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Estimating the impact of depredation by killer whales and sperm whales on longline fishing for toothfish (Dissostichus eleginoides) around South Georgia
) and replacing the lost catch. In addition, fishery managers must decide how to account for what can ... = 0.0003), although the pod size appears to be lower in the middle of the fishing sea- son (Figure ... that using fish-remains on the line could provide a standardised method of estimating number of fish lost ... lost. Thus, the comparison of standardised CPUE is potentially a more reliable method of estimating ... 3.8% and sperm whales on 17.7% of lines. Killer whales appear in pod sizes normally of 4 to 10 animals ... toothfish, usually depressing CPUE by about 50%. Sperm whales occur in smaller pod sizes, normally between 1 ... whales have been more frequently encountered in recent years, occurring in larger pod sizes, whereas ... the season in August. Killer whale interactions appear to be more consistent with no obvious pattern ...
Science Journal Paper : CCAMLR Science, Volume 17 (CCAMLR Science, Volume 17) : 163–178 : Author(s): Moir Clark, J. and D.J. Agnew