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Registros recuperados: 26
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Algunas características de la estructura y del comportamiento migratorio de los cardúmenes de caballa (Scomber japonicus marplatensis)en la plataforma bonaerense (Mar Argentino); período 1965-1984 OceanDocs
Cousseau, M.B.; Angelescu, V.A.; Perrotta, R.G..
Three periods were distinguished during the analyzed years: the first one (1965-1975)may be defined as "normal fishing seasons" occurring from October to March, with catches between 8,000 and 14,000 tons.
Tipo: Journal Contribution Palavras-chave: Size distribution; Reproduction; Sexual maturity; Feeding; Landing statistics; Migrations; Geographical distribution; Feeding; Geographical distribution; Reproduction; Sexual maturity; Http://aims.fao.org/aos/agrovoc/c_2838; Http://aims.fao.org/aos/agrovoc/c_5083; Http://aims.fao.org/aos/agrovoc/c_6507; Http://aims.fao.org/aos/agrovoc/c_7016.
Ano: 1987 URL: http://hdl.handle.net/1834/2008
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Anchovies of the Sea of Azov and The Black Sea: Regularities of wintering migrations (Brief review) IBSS Repository
Shulman, G. E..
Close relation between internal (level of fat stores) and external (temperature fall) impulses of wintering migration of Azov and Black Sea anchovies Engraulis encrasicolus maeoticus and E. e. ponticus (“dosage principle”) was revealed. Schools with high fatness begin migration at more high temperature than that ones with low fatness. Intensity of migration also correlates with level of fatness. Regularities obtained may be used for study of wintering migration of other truly marine fishes.
Tipo: Journal Contribution Palavras-chave: Anchovy; Migrations; Fat; Temperature; Анчоус; Миграции; Жир; Температура.
Ano: 2002 URL: http://repository.ibss.org.ua/dspace/handle/99011/143
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Aspectos biológicos del calamar Illex argentinus OceanDocs
Leta, H.R..
La creciente importancia que los recursos de calamar han adquirido en 105 últimos 30 años, los sitúa actualmente entre los más importantes recursos pesqueros del mundo. En consecuencia, paises tradicionalmente no explotadores o consumidores de productos de calamar, han orientado sus esfuerzos hacia el logro de un mejor conocimiento de las especies de cefalópodos que habitan su ambiente marino. En este sentido el aporte de disciplinas tales como la biología ha sido decisivo para desarrollar en forma exitosa pesquerías de calamar, entre otras.El programa de investigaciones del Instituto Nacional de Pesca para 1980 incluyó el estudio integral de la explotación de los calamares como un primer paso hacia el desarrollo de una pesquería del recurso. Este trabajo...
Tipo: Report Palavras-chave: Biology; Environmental conditions; Population structure; Spawning; Spawning grounds; Sex ratio; Sexual maturity; Reproduction; Length; Behaviour; Migrations; Growth; Population structure; Spawning; Length; Growth; Biology; Environmental conditions; Spawning grounds; Sex ratio; Sexual maturity; Reproduction; Behaviour; Http://aims.fao.org/aos/agrovoc/c_6115; Http://aims.fao.org/aos/agrovoc/c_14490; Http://aims.fao.org/aos/agrovoc/c_4260; Http://aims.fao.org/aos/agrovoc/c_3394; Http://aims.fao.org/aos/agrovoc/c_925; Http://aims.fao.org/aos/agrovoc/c_32980; Http://aims.fao.org/aos/agrovoc/c_7277; Http://aims.fao.org/aos/agrovoc/c_7014; Http://aims.fao.org/aos/agrovoc/c_7016; Http://aims.fao.org/aos/agrovoc/c_6507; Http://aims.fao.org/aos/agrovoc/c_868.
Ano: 1981 URL: http://hdl.handle.net/1834/2563
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Bio-écologie des cétacés et enjeux de leur conservation pour les Etats côtiers africains comme le Sénégal OceanDocs
Ndao, Ibrahima.
Tipo: Theses and Dissertations Palavras-chave: Whaling; Anatomy; Morphology (biology); Physiology (fish); Preservation (fishery products); Biodiversity; Baleens; Migrations; Reproductive cycle; Fish consumption; Overfishing; Pollution.
Ano: 2006 URL: http://hdl.handle.net/1834/5005
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Cinco nuevos registros de especies de aves para la isla Malpelo, Pacífico colombiano OceanDocs
Zamudio, Jeisson Andrés.
Five species of birds were recorded for the first time in Malpelo Island. With this information, the total number of birds recorded in the island ascends to 65 species. The new bird records are Upland Sandpiper, Semipalmated Sandpiper, Surfbird, Great Crested Flycatcher and the Northern Waterthrush.
Tipo: Journal Contribution Palavras-chave: Migrations; Marine birds; New records.
Ano: 2011 URL: http://hdl.handle.net/1834/4425
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Contribution a l'etude de la biologie du crabe-tourteau Cancer pagurus sur les cotes de Bretagne sud. ArchiMer
Le Foll, Anne.
The study of the crab Cancer pagurus , along the Brittany coast, has revealed new information about its movements, growth and reproduction. The 1439 crab tagging has been effected either on land using the Edwards technique "suture-tag" or onboard using a similar technique to the Gundersen method of "toggle-tag". The results confirm that males are relatively sedentary, the females migrate more. To estimate growth, the author used the "capture-recapture" method and the results from crab rearing. It appeared that the molt increment is not constant and generally, so the molt frequency, it percentage decreases when the size increases.
Tipo: Text Palavras-chave: Marine crustaceans; Sexual reproduction; Tagging; Growth; Migrations.
Ano: 1984 URL: http://archimer.ifremer.fr/doc/1984/publication-1785.pdf
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Do FADs influence the geographical distribution of dolphinfish (Coryphaena hippurus)? ArchiMer
Taquet, Marc; Reynal, Lionel; Laurans, Martial.
For most fisheries, increasing the local production of pelagic fish is the main objective of Fish Aggregating Devices (fads). This does not rule out the existence of a larger-scale impact, especially on the migratory behaviour of fish. The analysis of data collected during 25 experimental fishing surveys around Martinique between 1995 and 1997 has led to the hypothesis that fads influence the migratory behaviour of young dolphinfish. Unlike recent studies of dolphinfish migration in the Caribbean, which tend to show an annual migration pattern with a seasonal passage through the French West Indies, the experimental fishing surveys done over more than a year on a monthly basis on a single cohort, show that the migratory pattern of part of the regional stock...
Tipo: Text Palavras-chave: Attracting techniques; Geographical distribution; Migrations; Migratory species; Pelagic fisheries; Tuna fisheries; Coryphaena hippurus.
Ano: 2000 URL: http://archimer.ifremer.fr/doc/00042/15321/12635.pdf
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Donnees nouvelles sur le germon Thunnus alalunga Bonnaterre 1788 dans le Nord-Est Atlantic. 2eme partie. Les populations de germons Thunnus alalunga dans le Nord-Est Atlantique. ArchiMer
Aloncle, Henri; Delaporte, Francis.
In this, the 2nd part of a study of Thunnus alalunga in the north-east Atlantic, populations and migrations are considered. The term 'population' is defined. The utilization of H. fusca as a biological 'marker' is considered and tagging experiments are described. Modal classes are examined: summary analysis, detailed analysis of fisheries. Internal temps and regulation are studied. The types of watering are defined and described and a statistical analysis as a function of the watering is made. An attempt at synthesis is made: Azorian, standard. Migratory determinism is examined.
Tipo: Text Palavras-chave: ANE; Thunnus alalunga; Population structure; Tagging; Migrations; Ecological distribution.
Ano: 1974 URL: http://archimer.ifremer.fr/doc/1974/publication-2043.pdf
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Ecología trófica de la anchoíta (Engraulidae, Engraulis anchoita)del Mar Argentino. Parte III. Requerimiento trófico individual en relación con el crecimiento, ciclo sexual y las migraciones estacionales OceanDocs
Angelescu, V.A.; Anganuzzi, A..
The paper was developed in order to arrange the data gathered on this subject and to generate new hypotheses in connection with the trophic strategy of the northern stock of anchovy in the area between latitudes 35°-42°S. Such estimates were finally compared with the values of the gravimetric determinations of stomach contents- as converted to caloric values - of individuals grouped by total-length amd age classes, ecological areas, and seasons of the year. The set of results as obtained conforms the initial basis for developing Part IV of the Trophic Ecology of the Argentine anchovy as related to food consumption estimates, by stock biomass and annual classes, with back-calculations to age class 0, and for applying "regional patterns" that result from the...
Tipo: Journal Contribution Palavras-chave: Growth curves; Bioenergetics; Migrations; Length-weight relationships; Condition factor.
Ano: 1986 URL: http://hdl.handle.net/1834/2022
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El dorado, Salminus maxillosus (Pisces, Characiformes)en el Río de la Plata y Río Uruguay inferior OceanDocs
Sverlij, S.B.; Espinach Ros, A..
Catch per unit effort (CPUE), lenght distribution, age, growth, reproduction, migrations and feeding were studies through samples collected with longlines and a gang of gill-nets of several mesh size. CPUE data showed a progressive decrease of the relative abundance in the Río de la Plata, during the study period. Age was studied from scales. Back-calculations of growth revealed the pressence of Lee's phenomenon. Means lenghts at age were greater in females. No significant difference was found in lenght-weight regressions from both sexes and sampling areas. Only young individuals from 1 to 6 years were caught. None of the fish studied had ripening gonads. Extensive migrations were recorded both in the Paraná and Uruguay rivers. Stomach contents analysis...
Tipo: Journal Contribution Palavras-chave: Migrations; Catch/effort; Sex ratio; Size distribution; Scale reading; Growth curves; Reproduction; Stomach content; Sex ratio; Reproduction; Http://aims.fao.org/aos/agrovoc/c_7014; Http://aims.fao.org/aos/agrovoc/c_6507.
Ano: 1986 URL: http://hdl.handle.net/1834/2032
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Eléments sur la pêche artisanale mauritanienne OceanDocs
Chaboud, C.; Kébé, M.; Diop, H.; Lawal, H.S..
Le Centre National de Recherches Oceanographiques et des Pêches de Nouadhibou (CNROP) entreprend chaque semestre un recensement exhaustif des unités de pêche artisanale opérant sur le littoral mauritanien. En juillet 1987 une enquête socio- 6conomique a été effectuée. Les informations recueillies portent sur les pirogues en état de prendre la mer, les migrations de pêcheurs, l'emploi et l'activité au cours des trois derniers mois,le capital technique, les équipages et l'organisation sociogconomique des unités de pêche. La pêche artisanale mauritanienne compte actuellement 735 embarcations réparties sur 22 points de débarquement. Elle génère 3302 emplois directs.
Tipo: Journal Contribution Palavras-chave: Artisanal fishing; Migrations.
Ano: 1988 URL: http://hdl.handle.net/1834/4672
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Estudio comparativo de los pejerreyes marinos del área marplatense OceanDocs
Hirt Chabbert, J.A..
Los pejerreyes son peces muy apreciados por el hombre, debido a la exquisitez de su carne. Habitan tanto las aguas dulces y salobres como las marinas. La gran semejanza entre todos ellos y su adaptabilidad a los diversos medios, son factores que hacen muy dificil la identificación específica. La mayoría de los ictiólogos que se han ocupado hasta ahora del tema en la Argentina, no han publicado los resultados de sus investigaciones, por 10 cual se cuenta con unos pocos trabajos antiguos (Berg, 1895; Devicenzi, 1924; Lahille 1929a, 1929b y 1930; Marrero, 1950) y claves recientes elaboradas sobre los datos provenientes de esos trabajos (Menni et al., 1984). Uno de los trabajos más nuevos y completos sobre las especies de aterinidos (Familia Atherinidae) del...
Tipo: Theses and Dissertations Palavras-chave: Marine fish; Taxonomy; Animal morphology; Migrations; Geographical distribution; Taxonomy; Geographical distribution; Animal morphology; Http://aims.fao.org/aos/agrovoc/c_7631; Http://aims.fao.org/aos/agrovoc/c_5083; Http://aims.fao.org/aos/agrovoc/c_421.
Ano: 1991 URL: http://hdl.handle.net/1834/2953
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Etude diagnostic de la pêcherie de mulets sur la grande côte du Sénégal OceanDocs
Tipo: Book Palavras-chave: Mullet fisheries; Reproduction; Growth; Migrations; Ecology; Stocks; Landing statistics; Inland fisheries; Fishing gear; Exploitation; Canoe fisheries; Marketing; Artisanal fishing; Fishing licenses; Mesh regulations; Protected areas; Reef fisheries; Fishing effort.
Ano: 2009 URL: http://hdl.handle.net/1834/4578
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Identification biogéographique des principaux stocks exploités en Manche, relations avec ceux des régions voisines ArchiMer
Bennet, D; Casey, J; Dare, P; Dawson, W; Flatman, S; Hulme, T; Macer, C; Millner, R; Pickett, G; Vince, M; Lorance, Pascal; Souplet, A; Giret, M; Morin, Jocelyne; Berthou, A; Latrouite, Daniel; Morizur, Yvon; Bossy, S; Ozanne, S.
At present, the majority of fisheries are monitored and regulated in areas which are delineated by arbitrary ICES boundaries which do not necessarily have logical or consistent relationships with biological processes or fish movements. The biogeographical identification of Channel stocks is, therefore, an important step towards developing a rational strategy for the management of their fisheries. This synthesis is based on the wide available knowledge which has not been yet entirely exploited with the purpose of stock identification, for 25 commercially important species in the Channel. In addition, principal technics for stock identification are reviewed likewise environmental characteristics of the Channel, which represent fundamental components in...
Tipo: Text Palavras-chave: Environnement physico chimique; Méthodes d'identification; Migrations; Zones de ponte; Distribution géographique; Espèces exploitées; Identité de stock; Manche; Physical environment; Identification methods; Migrations; Spawning areas; Geographical distribution; Exploited species; Stock identification; Channel.
Ano: 1993 URL: https://archimer.ifremer.fr/doc/1993/rapport-719.pdf
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Institutions, mobility and resilience in the Fante migratory fisheries of West Africa OceanDocs
Overå, R..
Through their spatial mobility, African fishermen and fish traders explore and exploit new niches: primarily fishing grounds and fish markets (see Chauveau 1991). Ghanaian canoe fishermen are among the groups most famous for such activity. In the twentieth century, they migrated extensively in coastal West Africa, reaching as far as Mauritania to the north and Congo to the south in order to fish in areas where the local fishermen have under-exploited their fishing grounds, and markets are unsaturated with fish (Delauney 1991; Boujou 2000). These migrants’ contributions in their host countries in terms of technological innovation in the fisheries, in terms of new knowledge and institutions, and not the least in terms of food supply, are increasingly being...
Tipo: Conference Material Palavras-chave: Migrations; Artisanal fishing.
Ano: 2001 URL: http://hdl.handle.net/1834/655
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La biologie de la lamproie marine (Petromyzon marinus Linne 1758) de la côte atlantique française ArchiMer
Grellier, Patrick.
Vertebrate Cyclostome, the european sea lamprey is a sea spawning migrator amphihaline species, which is a parasite during its growing phase at sea. After the spawning migration, lampreys couple in the upper reach of water courses, they lay their eggs, then die from physiological misery. The eggs develop sheltered into a nest until hatching of small larvae, the ammocoetes. Morphologically very different from the adults, the ammocoetes spend a several years sedentary life, being burried into the sediment. Then, they metamorphose into young lampreys which undertake their downstream migration. As soon as they enter sea water, they continue growing at the expense of several species of fishes.
Tipo: Text Palavras-chave: Morphologie; Cycle Biologique; Migrations; Reproduction.
Ano: 1996 URL: http://archimer.ifremer.fr/doc/00085/19616/17256.pdf
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Migrants ouest-africains: miséreux, aventuriers ou notables ? OceanDocs
Sall, A.; Morand, P..
CERI-Sciences Po-CNRS, Paris (France); Centre d'Etudes d'Afrique, Bordeaux (France); Centre d' Etudes des Mondes Africains, Paris (France)
Tipo: Journal Contribution Palavras-chave: Artisanal fishing; Migrations; Fishermen; Canoe fisheries; Fishermen; Http://aims.fao.org/aos/agrovoc/c_2936.
Ano: 2008 URL: http://hdl.handle.net/1834/3673
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Migrations, admixture and genetic diversity in Central Argentinian Patagonia: analysis of autosomal Alu polymorphisms JBAG
Parolin,M.L; Zanetti,D; Calò,C.M; Esteban,E; Avena,S; Carnese,F.R; Moral,P.
This study aimed to analyze autosomal Alu insertions in three localities from Patagonia Argentina belonging to the Andes region and the coast of the Chubut province. Knowledge of the genetic diversity of these populations, along with the genealogical data, will contribute to better understand historical information, differential migration process and bio-demographic composition of the Central Patagonia region. In order to achieve this objective, 16 autosomal Alu insertion polymorphisms were genotyped: ACE, APO-A1, TPA25, FXIIIB, A25, HS4.32, D1, HS4.69, HS2.43, Sb19.12, Yb8NBC120, Sb19.3, Yb8NBC125, Ya5NBC221, DM, and CD4. Our results showed that the Central Patagonia region presents a complex continental genetic admixture with marked Native American roots...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Alu insertion polymorphisms; Argentina Central Patagonia; Admixture; Migrations.
Ano: 2017 URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1852-62332017000300004
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Rapport national sur l'état de l'environnement marin et côtier OceanDocs
Le domaine maritime sénégalais s’étend de 18°00 N, -20°00 W, -16°30 E, 12°15 S ; la presqu’île du Cap-Vert située entre 14°30 N et 15°00 N le divise en deux zones aux caractéristiques topographiques distinctes. Au nord, le plateau continental est peu étendu vers le large et orienté Nord-Nord/Est. Au sud de la presqu’île, le plateau s’élargit et le talus continental est orienté nord-sud. L’embouchure du fleuve Sénégal au Sénégal au Nord de la presqu’île du Cap-Vert et celles de la Gambie et de la Casamance au Sud constituent également un trait marquant de cette région. Les travaux réalisés au Sénégal en océanographie ont montré : - l’existence de deux saisons marines aux caractéristiques très différentes qui se succèdent : une saison chaude de juillet à...
Tipo: Report Palavras-chave: Deltas; Ecosystems; Mangroves; Coastal erosion; Marine environment; Marine mammals; Shark fisheries; Turtle fisheries; Aquatic birds; Fishermen; Migrations; Flora; Fisheries; Marine pollution; Fishing nets; Climatic changes; Deltas; Ecosystems; Marine environment; Aquatic birds; Fishermen; Fisheries; Mangroves; Coastal erosion; Flora; Fishing nets; Http://aims.fao.org/aos/agrovoc/c_2170; Http://aims.fao.org/aos/agrovoc/c_2482; Http://aims.fao.org/aos/agrovoc/c_4610; Http://aims.fao.org/aos/agrovoc/c_8898; Http://aims.fao.org/aos/agrovoc/c_2936; Http://aims.fao.org/aos/agrovoc/c_2934; Http://aims.fao.org/aos/agrovoc/c_16190; Http://aims.fao.org/aos/agrovoc/c_9949; Http://aims.fao.org/aos/agrovoc/c_2983; Http://aims.fao.org/aos/agrovoc/c_2951.
Ano: 1922 URL: http://hdl.handle.net/1834/2884
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Rapport national sur l'état de l'environnement marin et côtier OceanDocs
Le domaine maritime sénégalais s’étend de 18°00 N, -20°00 W, -16°30 E, 12°15 S ; la presqu’île du Cap-Vert située entre 14°30 N et 15°00 N le divise en deux zones aux caractéristiques topographiques distinctes. Au nord, le plateau continental est peu étendu vers le large et orienté Nord-Nord/Est. Au sud de la presqu’île, le plateau s’élargit et le talus continental est orienté nord-sud. L’embouchure du fleuve Sénégal au Sénégal au Nord de la presqu’île du Cap-Vert et celles de la Gambie et de la Casamance au Sud constituent également un trait marquant de cette région. Les travaux réalisés au Sénégal en océanographie ont montré : - l’existence de deux saisons marines aux caractéristiques très différentes qui se succèdent : une saison chaude de juillet à...
Tipo: Report Palavras-chave: Deltas; Ecosystems; Mangroves; Coastal erosion; Marine environment; Marine mammals; Shark fisheries; Turtle fisheries; Aquatic birds; Fishermen; Migrations; Flora; Fisheries; Marine pollution; Fishing nets; Climatic changes; Deltas; Ecosystems; Marine environment; Aquatic birds; Fishermen; Fisheries; Mangroves; Coastal erosion; Flora; Fishing nets.
Ano: 2002 URL: http://hdl.handle.net/1834/2884
Registros recuperados: 26
Primeira ... 12 ... Última
 

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