Northern Shrimp (Pandalus borealis, Krøyer) in Spanish Bottom Trawl Survey 2004 and 2005 in NAFO Divisions 3LNO

The results of northern shrimp (Pandalus borealis) obtained from the Spanish bottom trawl surveys in the NAFO Regulatory Area (Divisions 3NO) in spring-summer 2004 and 2005, carried out by the Instituto Español de Oceanografía (Spanish Oceanographic Institute, Vigo Centre), are presented and compared with those from previous surveys from the same series. The catches 550 and 368 kg obtained in 2004 and 2005, respectively, confirmed the increase of shrimp importance in the last years in the Div. 3NO with an estimated biomass by swept area method around 2000 tons. Catch results from the surveys and data analysis are discussed in this paper

Northern Shrimp (Pandalus borealis, Krøyer) from Spanish Bottom Trawl Survey 2006 in NAFO Divisions 3LNO

The Spanish Institute of Oceanography carried out in 2006 two bottom trawl surveys in the NAFO Regulatory Area in Division 3NO and 3L during the months of June and August respectively. The results on northern shrimp (Pandalus borealis) are presented and compared with those from previous surveys from the same series. While the catch (278 kg.) and estimated biomass (1300 tons.) confirm the decrease of shrimp importance from 2002 in 3NO, 3L showed since the beginning of the new survey in 2003 a constant and significant increase from 104551 tons. in 2003 to 215389 tons. in 2006. Catch results from the surveys and data analysis are discussed in this paper

Northern Shrimp (Pandalus borealis, Krøyer) from Spanish Bottom Trawl Survey 2008 in NAFO Div. 3LNO

The Spanish Institute of Oceanography carried out in 2008 two bottom trawl surveys in the NAFO Regulatory Area in Division 3NO and 3L during the months of June, July and August respectively. The results on Northern shrimp (Pandalus borealis) are presented and compared with those from previous surveys from the same series. In 2008 the catch (24.2 kg) and estimated biomass (143.8 t) confirm the decrease of shrimp importance from 2004 in 3NO. In 3L Division, northern shrimp indices show a general increasing trend a long the whole period. Estimated biomass increased from 2003-2006; then, the values of these indices declined in 2007 (about 10%) and increased again in 2008 (149 265 t). Catch results from the surveys and data analysis are discussed in this paper

Northern Shrimp (Pandalus borealis) on Flemish Cap Surveys 2005

Since 1988, a stratified random summer bottom trawl survey are being carried out in Flemish Cap (NAFO Regulatory Area of Division 3M) by UE. From 2003 the traditional research vessel Cornide de Saavedra was replaced by the R/V Vizconde de Eza. The new vessel was calibrated and the indexes transformed. In 2004 year, the lack of time has not permitted to transform the biomass and abundance shrimp indexes of the whole series and only the 2003 and 2004 indexes from the R/V Vizconde de Eza were transformed to the R/V Cornide de Saavedra scale. In this paper, the series from 1988 to 2002 obtained with the R/V Cornide the Saavedra were transformed to make them comparable to the results obtained with the new vessel R/V Vizconde de Eza. The results of shrimp from the last survey on Flemish Cap in 2005 are presented and compared to those from previous years of the same series. Both biomass and abundance have increased significantly due to increasing of 3 age-class. The female biomass decreased, mainly due to declining of 5 and 6 year-classes. Also, in recent years (2004 and 2005) the youngest specimens (age 1) didn't appear in the catches, and they were only presents in the small size bag on the codend

Northern Shrimp (Pandalus borealis, Krøyer) from Spanish Bottom Trawl Survey 2009 in NAFO Div. 3LNO

The Spanish Institute of Oceanography carried out in 2009 two bottom trawl surveys in the NAFO Regulatory Area in Division 3NO and 3L during the months of June, July and August respectively. The results on Northern shrimp (Pandalus borealis) are presented and compared with those from previous surveys from the same series. In 2009 the catch (33 kg.) and estimated biomass (139 t.) confirm the decrease of shrimp importance from 2004 in 3NO. In 2009 the biomass estimated of northern shrimp in 3L Division was 74091 t. showing a drastic decline (50% with respect to 2008) after the upward trend a long the whole period studied. Catch results from the surveys and data analysis are discussed in this paper

Northern Shrimp (Pandalus borealis, Krøyer) from Spanish Bottom Trawl Survey 2012 in NAFO Div. 3LNO

The Spanish Institute of Oceanography carried out in 2012 two bottom trawl surveys in the NAFO Regulatory Area in Division 3NO and 3L during the months of June and August respectively. The results on Northern shrimp (Pandalus borealis) are presented and compared with those from previous surveys from the same series. In 2012 the catch (0.923 kg.) and estimated biomass (3.864 t.) confirm the decrease of shrimp importance from 2004 in 3NO. In 3L Division, northern shrimp indices show consecutive and drastic declines (55.7% with respect to 2011) and confirm the downward trend initiated in 2009. Estimated biomass increased from 2003-2006; then, the values of these indices declined in 2007 (about 10%) and increased again in 2008 up to its historical maximum (149265 t.). In 2012 the biomass estimated 10784 t. in 3L and 4 t. in 3NO were the lowest in the Spanish surveys series. Catch results from the surveys and data analysis are discussed in this paper

Northern Shrimp (Pandalus borealis, Krøyer) from EU-Spain Bottom Trawl Survey 2013 in NAFO Div. 3LNO

The Spanish Institute of Oceanography carried out in 2013 two bottom trawl surveys in the NAFO Regulatory Area in Division 3NO and 3L during the months of June and August respectively. The results on Northern shrimp (Pandalus borealis) are presented and compared with those from previous surveys from the same series. Although in 2013 the shrimp catch (8.955 kg.) and estimated biomass (37.711 t.) in 3NO increased to 2011 level, the low values recorded confirm the decrease in the importance of shrimp catches from 2004. Similarly, in 3L Division, northern shrimp indices increased with respect to 2012 (62%) but remains at low level. Estimated biomass increased from 2003-2006; then, the values of these indices declined in 2007 (about 10%) and increased again in 2008 up to its historical maximum (149 265 t.). In 2009 is initiated a downward trend decreasing up to lowest values in 2012 in the survey series. In 2013 the biomass estimated 17 438 t. in 3L and 38 t. in 3NO were between the lowest in the Spanish surveys series. Catch results from the surveys and data analysis are discussed in this paper

Feeding Habits and Biological Features of Deep-Sea Species of the Northwest Atlantic: Large-eyed Rabbitfish (Hydrolagus mirabilis), Narrownose Chimaera (Harriotta raleighana) and Black Dogfish (Centroscyllium fabricii)

Feeding habits and biological features of three deep-water species -large-eyed rabbitfish (Hydrolagus mirabilis), narrownose chimaera (Harriotta raleighana) and black dogfish (Centroscyllium fabricii)- distributed in the Grand Bank and Flemish Cap (Northwest Atlantic) were analyzed. Both chimaeroid species fed on endo and epi-benthic organisms, but with different behavior. Narrownose chimaera showed a closer relationship with the sea bed in the feeding habits, denoted mainly by the high polychaete and sediment presence; while in large-eyed rabbitfish, the great importance of pelagic prey (Coryphaenoides rupestris and cephalopods) would indicate wider feeding habits, increased with the predator size. Black dogfish preyed mostly on pelagic and benthopelagic prey (crustaceans, scyphozoans and fish). High infestation of Gyrocotyle affected the chimaeroid species, increasing with depth. The parasitation affected 67% of large-eyed rabbitfish, with higher percentage for smaller individuals; narrownose chimaera (84% with parasites) had a greater number of parasites per host, and bigger individuals were more affected. However, presence of Gyrocotyle did not seem to harm the well-being of the specimens. Length-weight relationship indicated bigger body weight for males in the small sizes of 108, 31.5 and 50 cm of large-eyed rabbitfish, narrownose chimaera and black dogfish respectively. However, the body-eviscerated weigh relationship did not show differences between sexes. The hepatosomatic index (HIS) was high in all species, mainly in narrownose chimaera (31.3%) and it reached in the other species a value around the fourth part of their eviscerated weight. Black dogfish showed a clear increase of HSI with the body weight, while chimaerids presented a bigger variation

Northern Shrimp (Pandalus borealis, Krøyer) from Spanish Bottom Trawl Survey 2011 in NAFO Div. 3LNO

The Spanish Institute of Oceanography carried out in 2011 two bottom trawl surveys in the NAFO Regulatory Area in Division 3NO and 3L during the months of June and August respectively. The results on Northern shrimp (Pandalus borealis) are presented and compared with those from previous surveys from the same series. In 2011 the catch (9429 Kg) and estimated biomass (37290 t) confirm the decrease of shrimp importance from 2004 in 3NO. In 3L Division, northern shrimp indices show consecutive and drastic declines (35.6% with respect to 2010) and confirm the downward trend initiated in 2009. Estimated biomass increased from 2003-2006; then, the values of these indices declined in 2007 (about 10%) and increased again in 2008 up to its historical maximum (149265 t). In 2011 the biomass estimated 24346 t in 3L and 37.29 t in 3NO were the lowest in the Spanish surveys series. Catch results from the surveys and data analysis are discussed in this paper

Northern Shrimp (Pandalus borealis, Krøyer) from Spanish Bottom Trawl Survey 2009 in NAFO Div. 3LNO

The Spanish Institute of Oceanography carried out in 2010 two bottom trawl surveys in the NAFO Regulatory Area in Division 3NO and 3L during the months of June, July and August respectively. The results on Northern shrimp (Pandalus borealis) are presented and compared with those from previous surveys from the same series. In 2010 the catch (21 kg.) and estimated biomass (114 t.) confirm the decrease of shrimp importance from 2004 in 3NO. In 3L Division, northern shrimp indices show a drastic decline (49% with respect to 2009) and confirm the downward trend initiated in 2009. Estimated biomass increased from 2003-2006; then, the values of these indices declined in 2007 (about 10%) and increased again in 2008 up to its historical maximum (149265 t.). In 2010 the biomass estimated 37803 t in 3L and 114 t. in 3NO were the lowest in the time series of Spanish . Catch results from the surveys and data analysis are discussed in this paper