Temporal patterns and transport processes in recruitment of spiny lobster ( Panulirus argus ) postlarvae to south Florida

1997 ◽  
Vol 129 (1) ◽  
pp. 79-85 ◽  
Author(s):  
C. A. Acosta ◽  
T. R. Matthews ◽  
M. J. Butler IV.
Keyword(s):  
Spiny Lobster ◽  
Temporal Patterns ◽  
Transport Processes ◽  
South Florida ◽  
Panulirus Argus

Problems and Perspectives Regarding Recruitment of Spiny Lobsters, Panulirus argus, to the South Florida Fishery

1986 ◽  
Vol 43 (11) ◽  
pp. 2099-2106 ◽  
Author(s):  
William G. Lyons
Keyword(s):  
Carapace Length ◽  
Spiny Lobster ◽  
Fishing Effort ◽  
International Management ◽  
South Florida ◽  
Panulirus Argus ◽  
Minimum Size ◽  
Juvenile Growth ◽  
Larval Recruitment ◽  
Yield Per Recruit

Inappropriate minimum size, illegal harvest, fishery-induced juvenile growth retardation and mortality, and excessive effort have reduced reproductive contributions and depressed yield-per-recruit in the overcapitalized south Florida spiny lobster (Panulirus argus) fishery. Measures recommended to improve yield-per-recruit are as follows: increase minimum legal size to 85–90 mm carapace length; require escape gaps in traps; eliminate possession of sublegal lobsters aboard vessels; prohibit harvest in nurseries; reduce fishing effort; improve enforcement of fishery regulations; and initiate programs to educate fishermen regarding impacts of fishery practices. International management is recommended to assure larval recruitment among Pan-Caribbean stocks.

Fecundity dynamics of female spiny lobster (Panulirus argus) in a south Florida fishery and Dry Tortugas National Park lobster sanctuary

2001 ◽  
Vol 52 (8) ◽  
pp. 1559 ◽  
Author(s):  
Rodney D. Bertelsen ◽  
Thomas R. Matthews
Keyword(s):  
National Park ◽  
Egg Production ◽  
Size Structure ◽  
Spiny Lobster ◽  
South Florida ◽  
Reproductive Season ◽  
Panulirus Argus ◽  
Chronological Age ◽  
Dry Tortugas ◽  
Spiny Lobsters

Using diver surveys, we compared the size structure, fecundity, and reproductive season of spiny lobsters (Panulirus argus) in the Dry Tortugas National Park lobster sanctuary with those of spiny lobsters in the south Florida fishery. The number of lobsters of both sexes larger than the legal size limit declined sharply in the fishery but not in the sanctuary. Clutch sizes were larger in the Dry Tortugas sanctuary, averaging 0.8 million, than in the fishery, averaging 0.3 million. The reproductive season was shorter and more intense in the sanctuary than in the fishery. In addition, lobsters in the sanctuary begin producing eggs at a larger size and produce more eggs per gram of body mass than lobsters in the fishery. Peak egg production occurs earlier in larger lobsters than in small ones. Establishing a fundamental reason for the differences between lobster reproduction in the sanctuary and that in the fishery is not possible until the chronological age of lobsters can be determined, but one hypothesis consistent with these differences is that, if lobsters reproduce at a certain chronological age, then sublethal fishery practices may account for slower growth for some lobsters resulting in some smaller but older reproductively active lobsters.

Movements of the Spiny Lobster Panulirus argus in South Florida

1986 ◽  
Vol 43 (11) ◽  
pp. 2228-2234 ◽  
Author(s):  
Douglas R. Gregory Jr. ◽  
Ronald F. Labisky
Keyword(s):  
Spiny Lobster ◽  
Patch Reef ◽  
Florida Keys ◽  
South Florida ◽  
Panulirus Argus ◽  
Commercial Fishing ◽  
Dispersal Patterns ◽  
Long Distance ◽  
Deep Reef ◽  
Spiny Lobsters

Long-distance movements of the spiny lobster Panulirus argus were studied in two Gulf of Mexico habitats (Shallows, Mid-depth) and three Atlantic Ocean habitats (Shallows, Patch Reef, and Deep Reef) in the lower Florida Keys during the mid-1970's. Of 6062 spiny lobsters tagged and released at the five sites between June 1975 and August 1976, 465 of the 771 (13%) lobsters recovered yielded usable movement data. Eighty percent of the tags were recovered within the first 3 mo of the 8 mo commercial fishing season (July 26 – March 31). Directions and rates of movements differed significantly (P < 0.05) among sites. Movements from Gulf sites were generally oriented to the west and southwest, toward the Atlantic offshore reefs, at mean displacement velocities of 0.57 km/d (Mid-depth) and 0.24 km/d (Shallows). Movements of lobsters from the Atlantic sites were principally eastward and westward, parallel to the reef line and island chain, at mean displacement velocities of 0.02 km/d (Deep Reef) and 0.05 km/d (Shallows, Patch Reef). The more directed movements of spiny lobsters from Gulf sites may reflect a migration from nursery grounds to the Atlantic reefs, which not only constitute the primary spawning habitat but also exhibit a more stable winter environment than the shallow Gulf. Movements of spiny lobsters within Atlantic waters reflect localized random onshore–offshore dispersal patterns typical within reef environments.

Settlement of Spiny Lobster, Panulirus argus, Pueruli in South Florida: An Evaluation from Two Perspectives

1986 ◽  
Vol 43 (11) ◽  
pp. 2221-2227 ◽  
Author(s):  
J. M. Marx
Keyword(s):  
Shallow Water ◽  
Carapace Length ◽  
Spiny Lobster ◽  
Red Alga ◽  
South Florida ◽  
Panulirus Argus ◽  
Seasonal Trends ◽  
Lobster Fishery ◽  
Mangrove Roots

Settlement of spiny lobster, Panulirus argus, pueruli occurs year-round in south Florida, but seasonal trends are not consistent. Recruitment peaks are common in spring but sometimes occur in other seasons. Postsettlement dynamics of seasonal settlement classes must be determined to establish a relationship between puerulus abundance and subsequent fishery yield. Pueruli settle in various shallow-water habitats, including masses of the red alga Laurencia, algal-covered mangrove roots, and colonies of the bryozoan, Bugula. Settlement habitats of 0.04–2 ha can produce 1906–3913 juveniles (20 mm carapace length) annually. Management must protect these critical habitats to assure productivity of the spiny lobster fishery.

Reproductive Dynamics of the Spiny Lobster Panulirus argus in South Florida

1982 ◽  
Vol 111 (5) ◽  
pp. 575-584 ◽  
Author(s):  
Douglas R. Gregory ◽  
Ronald F. Labisky ◽  
Christopher L. Combs
Keyword(s):  
Spiny Lobster ◽  
South Florida ◽  
Panulirus Argus

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.

Estimation of abundance and spatial distribution of Panulirus argus using different methodologies in artificial shelter, trap and coral reef fisheries

Crustaceana ◽  
2013 ◽  
Vol 86 (2) ◽  
pp. 158-181 ◽  
Author(s):  
Raúl Cruz ◽  
Carlos A. Borda
Keyword(s):  
Spatial Distribution ◽  
Spiny Lobster ◽  
Panulirus Argus ◽  
Fishing Gear ◽  
Productive Capacity ◽  
Fishing Pressure ◽  
The West ◽  
Effective Measure ◽  
Protection Area ◽  
Marine Protection

Estimates of spiny lobster stocks (Panulirus argus Latreille, 1804) represent a fundamental input for population assessment models and are, therefore, indispensable for proper management. In this study we analysed methodologies employed in the Gulf of Batabanó (Cuba) and Providencia and Santa Catalina (Colombian Caribbean) to estimate abundance (N) and stock productivity. We found evidence that the relative abundance (CPUE) for trap-like jaulones and skin diving in natural shelters was likely to remain high despite the decline in abundance (hyperstability). In contrast, the proportionality between CPUE and N was satisfactory in artificial shelters (Cuban pesqueros). Stock productivity was greater for jaulones (22 288 kg/km2) than for pesqueros (1309 kg/km2) or natural shelters (15.25 kg/km2), reflecting differences in the productive capacity of each type of fishing gear. In natural shelters the exploitable biomass is under great fishing pressure and the reproductive stock is likely to decrease. Thus, the West zone of Providencia and Santa Catalina, characterized by high-density seagrass and mangrove, should be designated a marine protection area to prevent a lobster fishing collapse. The most effective measure to revert the lobster fishing collapse in Cuba would be to ban the use of jaulones and liftable pesqueros, thereby reducing fishing intensity.

In vitro digestion of protein sources by crude enzyme extracts of the spiny lobster Panulirus argus (Latreille, 1804) hepatopancreas with different trypsin isoenzyme patterns

Aquaculture ◽  
2010 ◽  
Vol 310 (1-2) ◽  
pp. 178-185 ◽  
Author(s):  
Erick Perera ◽  
F.J. Moyano ◽  
L. Rodriguez-Viera ◽  
A. Cervantes ◽  
G. Martínez-Rodríguez ◽  
...  
Keyword(s):  
Spiny Lobster ◽  
In Vitro Digestion ◽  
Crude Enzyme ◽  
Panulirus Argus ◽  
Protein Sources ◽  
Isoenzyme Patterns
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