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Bibliography of the Maurice Lamontagne Institute

Luc BOURASSA

BOURASSA, L., S. BRULOTTE, 2009. Compte rendu de l'atelier sur les indicateurs de l'état des stocks de mye (Mya arenaria), 26 octobre 2004, Institut Maurice-Lamontagne, Mont-Joli, Qc ; Proceedings of the workshop on indicators of stock status of soft-shell clam (Mya arenaria). MPO, Secrétariat canadien de consultation scientifique, Série des comptes rendus ; DFO, Canadian Science Advisory Secretariat, Proceedings Series, 2009/057, 14 p .

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DUFOUR, R., B. SAINTE-MARIE, L. BOURASSA, 2003. Snow crab of the St. Lawrence estuary and the northern Gulf of St. Lawrence (Areas 13 to 17 and 12A, 12B and 12C) in 2002. Science, Stock Status Report, 2003/011, 24 p .

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DUFOUR, R., SAINTE-MARIE, B., BOURASSA, L., 2003. Crabe des neiges de l'estuaire et du nord du golfe Saint-Laurent (zones 13 a 17 et 12A, 12B et 12C) en 2002. Rapport sur l'état des stocks, 2003/011, 23 p .

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MORIN, B., B. BERNIER, L. BOURASSA, 1994. Le stock de flétan du Groenland (Reinhardtius hippoglossoides) du golfe du Saint-Laurent (4RST) : état de la ressource en 1993. MPO, Pêches de l'Atlantique, Document de recherche, 94/25, 31 p .

[Abstract only available in French]
Les débarquements de flétan du Groenland de 4RST ont diminué de 3,400 t à 2,800 t de 1992 à 1993. Cette baisse est principalement due aux engins mobiles et particulièrement pour les crevettiers à la suite de l'introduction de la grille Nordmore. Le filet maillant est l'engin le plus utilisé depuis le milieu des années 70. La taille des poissons capturés en 1992 se situait principalement entre 41 et 43 cm, correspondant à la classe d'âge de 1988. Une grande majorité des captures sont des poissons immatures. Une analyse préliminaire des taux de captures des pêcheurs-repères suggère que les PUE ont diminué de 1992 à 1993. L'indice d'abondance du relevé d'été montre une baisse importante entre 1992 et 1993 et des classes d'âge (1989-1991) plus faibles que la classe d'âge de 1988. D'après les informations disponibles, il est important de réduire l'effort de pêche et la proportion de poissons immatures pêches afin de permettre une conservation de cette ressource dans le Golfe.

FRÉCHET, A., Y. GAGNON, P. SCHWAB, D. D'AMOURS, J.-D. DUTIL, Y. LAMBERT, L. BOURASSA, C. ROLLET, 1994. Revue de l'état du stock de morue du nord du golfe du Saint-Laurent (3Pn, 4RS) en 1993 ; Review of the status of the northern Gulf of St. Lawrence cod stock (3Pn, 4RS) in 1993. MPO, Pêches de l'Atlantique, Document de recherche ; DFO, Atlantic Fisheries, Research document, 94/29, 50 p .

The 1993 fishing season was conducted with many problems. The fishing season started late because of problems linked with enforcement, the fisheries were stopped many times because of small fish. The initial TAC for 1993 of 31,000 t was reduced at the end of August to 18,000 t on the recommendation of the FRCC. This TAC was based on results of last year's assessment and corresponds to a fishery at the F0.1 reference level. Landings for 1993 were of 18,171 t. There are no directed nor sport fisheries on the 3Pn, 4Rs cod stock in 1994. All available indices indicate a large decline in the last year. The mobile gear catch rates drop by 37 % between 1992 and 1993. The population estimates derived from the 1994 January groundfish research vessel survey represent only 51 % of those estimated in 1993. The population estimates from the summer groundfish survey dropped by 65 %. Catch rates from the Index Fishermen declined in certain cases and maintained themselves in others. For the first time, a calibration of SPA was attempted incorporating results from both the summer and winter surveys. The summer survey series is now long enough to be of interest (4 years) and the winter series will be discontinued in 1995. The 3+ population numbers would have gone from 546 million individuals in 1980 to as low as 95 million individuals in 1993 and the biomass of mature fish (7+) in 1993 could be as low as 10,000 t. Because of problems linked with the quality of the research vessel survey information, the calibration with ADAPT produces anomalously high fishing mortalities. The analysis is thus presented for illustrative purposes only and no projections were done. Biomass is expected to be very low.