Records of 14 trematode species, collected from bottom fishes from the western and northern parts of the Ross Sea, are given. Trematodes Otodistomum cestoides van Beneden, 1871, Lecithaster micropsi Zdzitowiecki, 1992, Neolepidapedon trematomi Prudhoe et Bray, 1973, Postlepidapedon opisthobifurcatum Zdzitowiecki, 1990, Discoverytrema gibsoni Zdzitowiecki, 1990, D. markowskii Gibson, 1976, Macvicaria muraenolepidis Zdzitowiecki, 1990, Helicometra rakusai Zdzitowiecki, 1997 and Proctophantastes sp. are recorded from the Ross Sea for the first time. Proctophantastes sp. differs from other species of Proctophantastes Odhner, 1911 by the morphology of the ventral equatorial ridge of the ventral sucker.
Abstract:
The aim of the work is to study the leukocyte composition in blood of deep-water fish species by the example of Antarctic toothfish Dissostichus mawsoni. Fish were caught in January–February 2012 in the Ross Sea (Statistical Subarea 88.1) at depths from 690 to 1183 m from onboard “Yantar-31” longline fishing vessel. Blood samples were collected from the caudal artery of immature fish (10 specimens) with average mass 21.4 kg and length 114 cm. The composition of leukocytes in Antarctic toothfish is similar to the leukocyte composition in freshwater fish species except basophils (Ivanova, 1983; Golovina and Trombitskii, 1989). Lymphocytes constitute the main portion (84.8 ± 2.13%) in the leukocyte formula; eosinophils (6.0 ± 1.29%), neutrophils (4.8 ± 0.92%), blast cells (2.7 ± 0.42%) and monocytes (1.7 ± 0.33%) are less numerous. Among studied Antarctic species, Antarctic blackfin icefish Chaenocephalus aceratus (Barber et al., 1981) have a similar composition of leukocytes.
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There is no abstract available for this document.
There is no abstract available for this document.
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Abstract:
The delegations of New Zealand and the United States submit this revised proposal for the establishment of a marine protected area (MPA) in the Ross Sea Region (“Ross Sea Region Marine Protected Area”) by the Commission for the Conservation of Antarctic Marine Living Resources (Commission or CCAMLR). First submitted at CCAMLR XXXI in October 2012 and again at CCAMLR SM-II in July 2013 (CCAMLR-SM-II/04) and CCAMLR XXXII in October 2013 (CCAMLR-XXXII/27), our delegations propose that CCAMLR establish this MPA to conserve marine living resources; maintain ecosystem structure and function; protect vital ecosystem processes and areas of ecological significance; and promote scientific research, including through the establishment of reference areas. We thank Members for the many constructive discussions and comments regarding the Ross Sea Region MPA proposal at the recent meetings of the Scientific Committee and Commission in Hobart in October 2013. Taking careful consideration of those discussions and comments, the proposal has been further revised. Among the key revisions included are amendments to the preamble; the addition of MPA zone descriptions, including a listing of the specific protection and scientific objectives associated with the zones; reorganization and technical changes to reporting, review, and period of designation components; and other technical clarifications. We recognize that additional key issues related to the proposal were discussed by the Scientific Committee and the Commission at CCAMLR XXXII. These require further discussion and negotiation by the Commission. We look forward to working together with Members at CCAMLR XXXIII on those issues and the amendments proposed here to reach consensus for CCAMLR to establish an MPA in the Ross Sea Region.
