scholarly journals Maximum Economic Yield and Resource Allocation in the Spiny Lobster Industry

1977 ◽  
Vol 9 (1) ◽  
pp. 145-149 ◽  
Author(s):  
Joel S. Williams ◽  
Fred J. Prochaska
Keyword(s):  
Resource Allocation ◽  
Spiny Lobster ◽  
Homarus Americanus ◽  
Demand Analysis ◽  
Panulirus Argus ◽  
American Lobster ◽  
World Production ◽  
Maximum Economic Yield ◽  
A Value ◽  
The U.S

Spiny lobster (Panulirus argus) is produced in the warmer ocean waters and is distinguished from the northern American lobster (Homarus americanus) by its lack of claws and relatively smaller size. Florida lobstermen currently account for 98 percent of the U.S. spiny lobster landings. This industry has grown from annual landings of less than a million pounds prior to the 1950s to 11 million pounds in 1974, with a value of over $13 million [5, 6]. Although no formal demand analysis has been completed, it appears that U.S. demand for this luxury seafood has increased considerably faster than domestic production. In current dollars, prices at dockside increased 251 percent from 39 cents per pound in 1960 to over $1.36 per pound at dockside in 1975 (an increase of 73 percent in constant dollars). Increased demand in the U.S. is further suggested by the fact that U.S. consumption of total world production increased from 53 to slightly over 80 percent in this same period.

The structure of the stomatogastric neuromuscular system in Callinectes sapidus , Homarus americanus and Panulirus argus (Decapoda Crustacea)

1974 ◽  
Vol 268 (892) ◽  
pp. 161-220 ◽  
Keyword(s):  
Motor Neurons ◽  
Callinectes Sapidus ◽  
Spiny Lobster ◽  
Homarus Americanus ◽  
Panulirus Argus ◽  
Neuromuscular System ◽  
Gastric Mill ◽  
Stomatogastric Nervous System ◽  
Group A ◽  
Pyloric Stomach

The stomatogastric nervous system of the reptantian Decapoda Crustacea, particularly the small isolated stomatogastric ganglion containing the 25-30 motor neurons that control the muscles of the gastric mill and the pyloric filter of the stomach, is an important preparation for research in comparative neurophysiology. Unfortunately there are no comprehensive descriptions of the neuromuscular system of the stomach in these animals. Therefore, since the stomatogastric motor neurons are identified by reference to the muscles they innervate, it has been difficult to identify neurons within or between species. The most important features for classifying the muscles of the decapod stomach are the ossicles to which the muscles attach. In the latter part of the last century Mocquard demonstrated that the stomach ossicles of the decapods could be compared in different groups despite the large variations from group to group. A summary of Mocquard’s (1883) classification scheme, with some modifications, is given. The scheme recognizes 33 ossicles in seven categories (cardiac gastric mill, I—VII; lateral supporting cardiac ossicles, VIII-XV ; ossicles of the cardio-pyloric valve, XVI-XVIII; supporting ossicles of the dorsal pyloric stomach, XIX -XXI; supporting ossicles of the ventral pylorus and ampullae, XXII-XXVII; supra-ampullary ossicles, XXVIII-XXX ; supporting ossicles of the lateral pylorus, XXXI-XXXIII). Where necessary, comments are then made on the ossicles of the three divergent species studied, the blue crab, Callinectes sapidus (Brachyura); the lobster, Homarus americanus (Macrura) and the spiny lobster Panulirus argus (Palinura). Most of the thirty-three ossicles are found in each of the species, but there are some major differences between species. Callinectes , for example, has the most complex ossicle system and Panulirus the most reduced.

Growth of juvenile American lobster Homarus americanus in a changing environment

2016 ◽  
Vol 557 ◽  
pp. 177-187 ◽  
Author(s):  
MD McMahan ◽  
DF Cowan ◽  
Y Chen ◽  
GD Sherwood ◽  
JH Grabowski
Keyword(s):  
Homarus Americanus ◽  
American Lobster ◽  
Changing Environment

Predicting bycatch hotspots based on suitable habitat derived from fishery-independent data

2020 ◽  
Vol 641 ◽  
pp. 159-175
Author(s):  
J Runnebaum ◽  
KR Tanaka ◽  
L Guan ◽  
J Cao ◽  
L O’Brien ◽  
...  
Keyword(s):  
Habitat Suitability ◽  
Mixed Model ◽  
Linear Mixed Model ◽  
Gulf Of Maine ◽  
Homarus Americanus ◽  
Management Tool ◽  
American Lobster ◽  
Suitable Habitat ◽  
Climate Conditions ◽  
Suitability Index

Bycatch remains a global problem in managing sustainable fisheries. A critical aspect of management is understanding the timing and spatial extent of bycatch. Fisheries management often relies on observed bycatch data, which are not always available due to a lack of reporting or observer coverage. Alternatively, analyzing the overlap in suitable habitat for the target and non-target species can provide a spatial management tool to understand where bycatch interactions are likely to occur. Potential bycatch hotspots based on suitable habitat were predicted for cusk Brosme brosme incidentally caught in the Gulf of Maine American lobster Homarus americanus fishery. Data from multiple fisheries-independent surveys were combined in a delta-generalized linear mixed model to generate spatially explicit density estimates for use in an independent habitat suitability index. The habitat suitability indices for American lobster and cusk were then compared to predict potential bycatch hotspot locations. Suitable habitat for American lobster has increased between 1980 and 2013 while suitable habitat for cusk decreased throughout most of the Gulf of Maine, except for Georges Basin and the Great South Channel. The proportion of overlap in suitable habitat varied interannually but decreased slightly in the spring and remained relatively stable in the fall over the time series. As Gulf of Maine temperatures continue to increase, the interactions between American lobster and cusk are predicted to decline as cusk habitat continues to constrict. This framework can contribute to fisheries managers’ understanding of changes in habitat overlap as climate conditions continue to change and alter where bycatch interactions could occur.

Valorization of American lobster ( Homarus americanus ) cooking waters: preparation and characterization of a food ingredient

2021 ◽  
Author(s):  
Ariane Tremblay ◽  
Ronan Corcuff ◽  
Charles Goulet ◽  
Samuel B. Godefroy ◽  
Alain Doyen ◽  
...  
Keyword(s):  
Homarus Americanus ◽  
American Lobster ◽  
Food Ingredient

scholarly journals Directly ageing the Caribbean spiny lobster, Panulirus argus with validated band counts from gastric mill ossicles

2018 ◽  
Vol 76 (2) ◽  
pp. 442-451 ◽  
Author(s):  
Gaya Gnanalingam ◽  
Mark J Butler ◽  
Thomas R Matthews ◽  
Emily Hutchinson ◽  
Raouf Kilada
Keyword(s):  
Spiny Lobster ◽  
Age Determination ◽  
Florida Keys ◽  
Panulirus Argus ◽  
Gastric Mill ◽  
Coefficients Of Variation ◽  
The Caribbean ◽  
First Time ◽  
Reader Experience

Abstract In crustaceans, ecdysis was long believed to result in the loss and replacement of all calcified structures, precluding the use of conventional ageing methods. However, the discovery of bands in the gastric ossicles of several crustaceans with some correlation with age suggests that direct age estimation may be possible. We applied this method to a tropical spiny lobster, Panulirus argus, one of the most iconic and economically valuable species in the Caribbean. The presence of growth bands was investigated using wild lobsters of unknown age and was validated with captive reared lobsters of known age (1.5–10 years) from the Florida Keys, Florida (USA). Bands were consistently identified in ptero- and zygo-cardiac ossicles of the gastric mill and did not appear to be associated with moulting. Validation with known age animals confirms that bands form annually. Counts between independent readers were reproducible with coefficients of variation ranging from 11% to 26% depending on reader experience and the structure used. This study demonstrates, for the first time, that direct age determination of P. argus is possible.

Predicting the winning or losing of symmetrical contests in the American lobster Homarus americanus (Milne-Edwards)

1997 ◽  
Vol 217 (1) ◽  
pp. 19-29 ◽  
Author(s):  
C. Vye ◽  
J.S. Cobb ◽  
T. Bradley ◽  
J. Gabbay ◽  
A. Genizi ◽  
...  
Keyword(s):  
Homarus Americanus ◽  
American Lobster
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