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| Registros recuperados: 11 | |
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| Omondi, J.G.. |
| In order to provide information on the digestive capacity of marine crustacea of mariculture potential in Kenya with a view to aiding the development of suitable feeds to support the industry, a biochemical survey was made of enzymes of extracellular digestion in the Indian White shrimp, Penaeus indicus. Results showed midgut gland endo-proteases in wild adult shrimp from the Kenya coast to have optima between pH 7.2 and 8.5 (Trypsin pH 7.5-8.0, Chymotrypsin pH 7.2-7.8, Elastase pH 6.8-8.5) with maximum specific activities of 101-408, 37-516, 70-90 Units mg protein-1 min-1 for trypsin, chymotrypsin and elastase respectively. There was no pepsin. The North Sea Norway lobster, Nephrops norvegicus, was investigated to a lesser extent and found to have much... |
| Tipo: Journal Contribution |
Palavras-chave: Shrimp; Crustacea; Midgut gland; Lobster; Digestive endo-proteases; Enzyme inhibitors; Hepatopancreas NEPHROPS NORVEGICUS PENAEUS INDICUS Marine crustaceans Mariculture Biochemical analysis Shrimp culture. |
| Ano: 2005 |
URL: http://hdl.handle.net/1834/1141 |
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| Autissier, Isabelle; Coum, Andrée; Cuillandre, Jean Pierre; Veron, Gerard; Latrouite, Daniel. |
| At the end of the seventies, as fishing abundance (based on Catch Per Unit Effort) in crabs and lobster fishery steadily declined, operating expenses increased, and fishing boats changed strategy (changing metiers, covering larger distance to fishing areas, fishing seasons being extended, ...) professionals and scientists aimed to consider reinforcing management measures. To enlighten and support potential related decisions, the Comité Régional des Pêches et Cultures Marines de Bretagne (Regional Committee for fishing and farming in Brittany), together with the ISTPM (Ifremer since 1984), conducted a survey on the exploited populations and gave a review of the involved Breton fleet. This report shows the results of a survey conducted among fishermen,... |
| Tipo: Text |
Palavras-chave: Landings; Catch rates; Fishing area; Fishing effort; Fleet; Brittany; Edible crab; Lobster; Spider crab; Apport; Rendement; Zone de pêche; Effort de pêche; Flottille; Bretagne; Tourteau; Homard; Araignée. |
| Ano: 1981 |
URL: http://archimer.ifremer.fr/doc/1981/rapport-1548.pdf |
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| Charuau, Anatole; Ifremer. |
| 1 - Study's goals review The management of Norway Lobster and Hake fisheries can be considered as the most important issue in the Gascogne gulf. Calculation methods used to evaluate prediction variations under various efforts and mesh constraints all pinpoint to the crucial role narrow mesh fishing plays in Hakes' Northern stock status. The involvement of Gascogne gulf Norway Lobster fisheries regarding Hakes over exploitation seems over dimensioned when comparing the size of both of these stocks. Hake stocks spread from Northern Great Britain to Northern Spain, while Norway Lobster stocks are located in the Gascogne gulf's mud flats. The biological solution is well known and consists in globally increasing mesh nets to 80mm which would bring up Hakes... |
| Tipo: Text |
Palavras-chave: Procedures of management; Modeling; Bay of Biscay; Mixed fishery; Lobster; Hake. |
| Ano: 1987 |
URL: http://archimer.ifremer.fr/doc/1987/rapport-1763.pdf |
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| Leleu, Kevin; Remy-zephir, Brice; Grace, Roger; Costello, Mark J.. |
| Time-series studies have reported trophic cascades in land, freshwater and marine environments in many geographic areas. However, the spatial extent of habitats, a key metric of ecosystem structure, has not been mapped in these studies. Marine reserves can provide experimental, before-after and inside-outside (control-impacted), situations for assessing the impact of fishing on ecosystems. We mapped seabed habitats and their associated communities (biotopes) in New Zealand's oldest marine reserve for comparison with pre-reserve maps created about 30 years previously. Areas grazed bare by sea urchins were entirely replaced in the centre of the reserve by kelp, or alga turf, an intermediate biotope between heavily grazed encrusting algae and lightly grazed... |
| Tipo: Text |
Palavras-chave: Kelp forest; Ecosystem change; Predator release; Subtidal mapping; Urchin Barren; New Zealand; Lobster; Fish; Time-series. |
| Ano: 2012 |
URL: http://archimer.ifremer.fr/doc/00107/21842/20067.pdf |
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| Barnett, Allain J. ; Arizona State University; ajbarnet@asu.edu; Anderies, John M; Arizona State University; m.anderies@asu.edu. |
| The insights in Governing the Commons have provided foundational ideas for commons research in the past 23 years. However, the cases that Elinor Ostrom analyzed have been exposed to new social, economic, and ecological disturbances. What has happened to these cases since the 1980s? We reevaluated one of Ostrom’s case studies, the lobster and groundfishery of Port Lameron, Southwest Nova Scotia (SWNS). Ostrom suggested that the self-governance of this fishery was fragile because the government did not recognize the rights of resource users to organize their own rules. In the Maine lobster fishery, however, the government formalized customary rules and decentralized power to fishing ports. We applied the concepts of feedback, governance... |
| Tipo: Peer-Reviewed Reports |
Palavras-chave: Atlantic Canada; Collective choice; Institutional analysis; Lobster; Maine; Polycentricity; Robustness. |
| Ano: 2014 |
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| Пахоруков, Н. П.; Игнатьев, С. М.. |
| Глубоководный омар (Nephropides caribaeus Manning, 1969) известен по немногочисленным поимкам из Карибского региона, эндемиком которого он традиционно считался. Анализ результатов наблюдений ПОА «Север-2» (1988 – 1989), выполненных на материковом склоне Южной Америки, на банке Бёрвуд и о-ве Южная Георгия, расширяет существующие представления о распространении этого вида. Установлено, что вид обилен в диапазоне глубин от 510 до 1250 м и встречается значительно южнее (до 53°S) и восточнее (до 35°W), чем считалось ранее. Омары предпочитают илисто-песчаные грунты, где они образуют скопления, которые вполне могут рассматриваться как промысловые (биомасса до 15000 т). |
| Tipo: Journal Contribution |
Palavras-chave: Омар; Nephropides caribaeus; Юго-западная Атлантика; Подводные наблюдения; Lobster; Nephropides caribaeus; South-west Atlantic; Underwater observers; Південно-західна Атлантика; Підводні спостереження. |
| Ano: 2008 |
URL: http://repository.ibss.org.ua/dspace/handle/99011/832 |
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| Registros recuperados: 11 | |
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