scholarly journals Lethal and sublethal effects of the anti‐sea lice formulation Salmosan® on the Pacific spot prawn ( Pandalus platyceros )

2021 ◽  
Author(s):  
Kate Mill ◽  
Christopher J. Kennedy
Keyword(s):  
Sublethal Effects ◽  
Sea Lice ◽  
The Pacific ◽  
Pandalus Platyceros ◽  
Spot Prawn

Mariculture potential of the spot prawn, Pandalus platyceros Brandt

Aquaculture ◽  
1977 ◽  
Vol 10 (1) ◽  
pp. 1-16 ◽  
Author(s):  
Randolph O. Kelly ◽  
Arthur W. Haseltine ◽  
Earl E. Ebert
Keyword(s):  
Pandalus Platyceros ◽  
Spot Prawn

Influence of Starvation and Subsequent Feeding on Body Composition and Energy Reserves in the Prawn Pandalus platyceros

1986 ◽  
Vol 43 (6) ◽  
pp. 1142-1148 ◽  
Author(s):  
J. N. C. Whyte ◽  
J. R. Englar ◽  
B. L. Carswell ◽  
K. E. Medic
Keyword(s):  
Physiological Condition ◽  
Abdominal Muscle ◽  
Whole Body ◽  
Energy Reserves ◽  
Major Energy Source ◽  
Wet Weight ◽  
Commercial Condition ◽  
Energy Assimilation ◽  
Pandalus Platyceros ◽  
Spot Prawn

Biochemical composition of body segments and physiological condition of the spot prawn (Pandalus platyceros) were determined during 84 d of starvation and 21 d of subsequent feeding. Maximum molting frequency, 1.79%∙d−1, occurred from day 22 to 43 and mortalities peaked at 0.81%∙d−1 on resumption of feeding. Ratios of wet weight of hepatopancreas to abdomen or whole body decreased on starvation and increased on feeding, and so provided an index of physiological condition. Uptake of moisture and chlorides with loss of other halides in prawn tissue resulted from starvation. Resting oxygen consumption rate declined by 50% after 40 d of starvation. Lipid in the hepatopancreas increased during early inanition to become the major energy source. Lipid contributed 73.1%, protein 20.6%, and carbohydrate 6.3% of total metabolized reserves. Hepatopancreas, carcass, and abdominal muscle generated 49.1, 33.4, and 17.5% of energy utilized. On subsequent feeding, lipid, carbohydrate, and protein accounted for 73.8, 20.1, and 6.1% of total caloric uptake with energy assimilation by body sections similar to depletion values. Spot prawn have sufficient reserves to remain in good commercial condition for 40 d without food.

Tag Retention of the Spot Prawn, Pandalus platyceros, Injected With Coded Wire Tags

1977 ◽  
Vol 34 (11) ◽  
pp. 2196-2199 ◽  
Author(s):  
Earl F. Prentice ◽  
John E. Rensel
Keyword(s):  
Key Words ◽  
Carapace Length ◽  
Needle Insertion ◽  
Behavioral Changes ◽  
Control Group ◽  
Growth And Survival ◽  
Tag Retention ◽  
Pandalus Platyceros ◽  
Spot Prawn ◽  
Coded Wire Tags

Juvenile spot prawns, Pandalus platyceros (initial carapace length 15.0–22.5 mm), were successfully tagged with Bergman–Jefferts coded wire tags in the thoracic sinus. Tagged prawns, prawns subject to tagging needle insertion but without tags, and a control group were tested. No significant differences in growth and survival within or between test groups occurred and no behavioral changes were observed among tagged animals. All tagged prawns molted at least twice during the 6-mo experiment. Average tag retention was 95%. Key words: Pandalus platyceros, tagging, tag retention, molting, survival

Concentrations of Inorganic Elements and Fatty Acids in Geographic Populations of the Spot Prawn Pandalus platyceros

1991 ◽  
Vol 48 (3) ◽  
pp. 382-390 ◽  
Author(s):  
J. N. C. Whyte ◽  
J. A. Boutillier
Keyword(s):  
Fatty Acids ◽  
Body Parts ◽  
Inorganic Elements ◽  
Metallic Elements ◽  
Ambient Seawater ◽  
Body Segments ◽  
Geographic Populations ◽  
Males And Females ◽  
Pandalus Platyceros ◽  
Spot Prawn

Inorganic elements and fatty acids were quantified in body segments of different size classes of the spot prawn Pandalus platyceros collected from various locations in British Columbia. Substantial differences in concentration of elements occurred in different body segments of the spot prawn, with the exoskeleton accumulating the highest number of quantifiable elements. Comparison of elements in abdomen carapace and tissue from immature males, mature males, and females indicated no correlation between element concentration and size, age, or sex of the spot prawn. Fatty acid profiles were similar for all body parts, except the hepatopancreas, and of the major fatty acids, only the content of 18:1n9 increased significantly with age of the spot prawn. Fatty acids and elements in the abdomen tissue of spot prawns from different locations were not significantly different and indicated similarity of diet irrespective of location. The concentrations of elements absorbed into the carapace of female spot prawns from separate geographic locations were substantially different, suggesting incorporation from elements in the ambient seawater, rather than uptake from diet, or any genetic variability associated with element metabolism in the spot prawn. The levels obtained for metallic elements in the spot prawn provide a measure against which future environmental impact could be assessed.

Effects of sea louse chemotherapeutants on early life stages of the spot prawn ( Pandalus platyceros )

2021 ◽  
Author(s):  
Kate Mill ◽  
Charanveer Sahota ◽  
Kassia Hayek ◽  
Christopher J. Kennedy
Keyword(s):  
Early Life ◽  
Life Stages ◽  
Early Life Stages ◽  
Pandalus Platyceros ◽  
Spot Prawn

The Philological Association of The Pacific Coast

PMLA ◽  
1935 ◽  
Vol 50 (4) ◽  
pp. 1373-1374
Keyword(s):  
Annual Meeting ◽  
Pacific Coast ◽  
Stanford University ◽  
The Pacific

The thirty-seventh annual meeting of the Philological Association of the Pacific Coast was held at Stanford University, California, on November 29 and 30, 1935.

A scanning electron microscopic study of the veliger larvae of the scallop argopecten purpuratus

1988 ◽  
Vol 46 ◽  
pp. 284-285
Author(s):  
G.C. Bellolio ◽  
K.S. Lohrmann ◽  
E.M. Dupré
Keyword(s):  
Morphological Description ◽  
Electron Microscopic ◽  
Larval Stages ◽  
Scanning Electron Microscopic Study ◽  
The Pacific ◽  
Argopecten Purpuratus ◽  
Veliger Larvae ◽  
20 Nm ◽  
Ethanol Series ◽  
Scanning Electron

Argopecten purpuratus is a scallop distributed in the Pacific coast of Chile and Peru. Although this species is mass cultured in both countries there is no morphological description available of the development of this bivalve except for few characterizations of some larval stages described for culture purposes. In this work veliger larvae (app. 140 pm length) were examined by the scanning electron microscope (SEM) in order to study some aspects of the organogenesis of this species.Veliger larvae were obtained from hatchery cultures, relaxed with a solution of MgCl2 and killed by slow addition of 21 glutaraldehyde (GA) in seawater (SW). They were fixed in 2% GA in calcium free artificial SW (pH 8.3), rinsed 3 times in calcium free SW, and dehydrated in a graded ethanol series. The larvae were critical point dried and mounted on double scotch tape (DST). To permit internal view, some valves were removed by slightly pressing and lifting the tip of a cactus spine wrapped with DST, The samples were coated with 20 nm gold and examined with a JEOL JSM T-300 operated at 15 KV.

Sign in / Sign up

Export Citation Format

Share Document