Population genetics of red spiny lobster (Panulirus interruptus) along the Baja California Peninsula, Mexico

2001 ◽  
Vol 52 (8) ◽  
pp. 1541 ◽  
Author(s):  
R. Perez-Enriquez ◽  
A. Vega ◽  
S. Avila ◽  
J. L. Sandoval
Keyword(s):  
Genetic Structure ◽  
Baja California ◽  
Spiny Lobster ◽  
Mean Value ◽  
The Other ◽  
Baja California Peninsula ◽  
Pairwise Comparisons ◽  
Panulirus Interruptus ◽  
Southern Central ◽  
Phyllosoma Larvae

Analysis of the genetic structure of the red spiny lobster (Panulirus interruptus) population was conducted along the Baja California Peninsula, Mexico. Samples for allozyme analysis came from Ensenada, Punta Eugenia, Punta Abreojos, San Juanico, and Bahia Magdalena (about 50 individuals each). Of 16 loci analysed, five were polymorphic (95% criterion) in at least one subpopulation. A significant mean value of FIS = 0.125 indicated some subpopulations departed from Hardy-Weinberg expectations; increased homozygosity was particularly evident for alleles EST-2*b and LAP*a at Ensenada and EST-2*c and EST-4*c at San Juanico. MeanFST = 0.101, which included 99% criterion polymorphic loci, was significant (P < 0.05), supporting a genetic structure throughout the species’ geographical range. Pairwise heterogeneity and FST tests showed no significant differences in allele frequencies between Punta Eugenia and Punta Abreojos, but several pairwise comparisons among the other locations, especially at the most variable loci, showed significant differences, supporting a hypothesis of genetic differentiation of P. interruptus into three subpopulations: southern, central, and northern Baja California. Oceanographic processes, such as semipermanent eddies south of Punta Eugenia that tend to retain phyllosoma larvae, may help generate this pattern. The implications of these findings for the management of the resource are also considered.

The Puerulus Settlement of Red Spiny Lobster (Panulirus Interruptus) in Bahía Tortugas, Baja California, Mexico

Crustaceana ◽  
1996 ◽  
Vol 69 (8) ◽  
pp. 949-957 ◽  
Author(s):  
Villa B. Alejandro ◽  
Jorge Belmar-Pérez ◽  
Campa J. Sara De La ◽  
Sergio A. GUZMÁN-DEL PRÓO ◽  
Jorge Carrillo-Laguna
Keyword(s):  
Seasonal Cycle ◽  
Carapace Length ◽  
Baja California ◽  
Spiny Lobster ◽  
Moon Phase ◽  
Panulirus Interruptus ◽  
Sea Temperature ◽  
Minor Peak ◽  
New Moon ◽  
Catch Rates

AbstractThe settlement of the puerulus stage of the Red Spiny Lobster (Panulirus interruptus) was measured in Bahía Tortugas, Baja California, using artificial collectors of the GuSi type. In the period 1993-1995 monthly sampling during the new moon phase was carried out. Catch rates per collector ranged from 1 to 10 pueruli. Mean catch per site ranged from 0 to 2.52 puerulus/collector/new moon phase. The general settlement pattern showed a conspicuous seasonal cycle where autumn was the dominant season, during spring there was a second minor peak. In both years September and October showed the highest catches, but September 1994 to February 1995 was a longer settlement period with maximum catches. The carapace length varied from 6.5 to 33.5 mm, 7.5 mm being the most frequent size. The season of maximum settlement seems to be related with a maximum sea temperature (20 to 21°C) which in Baja California occurs during the autumn.

Post-larval settlement of California spiny lobster Panulirus interruptus in Bahía Tortugas, Baja California and its relationship to the commercial catch

2007 ◽  
Vol 88 (1-3) ◽  
pp. 51-55 ◽  
Author(s):  
Lilia Danae Arteaga-Ríos ◽  
Jorge Carrillo-Laguna ◽  
Jorge Belmar-Pérez ◽  
Sergio A. Guzman del Proo
Keyword(s):  
Baja California ◽  
Larval Settlement ◽  
Spiny Lobster ◽  
Commercial Catch ◽  
Panulirus Interruptus

scholarly journals Feeding ecology of juvenile spiny lobster,Panulirus interruptus,on the Pacific coast of Baja California Sur, Mexico

2005 ◽  
Vol 39 (2) ◽  
pp. 425-435 ◽  
Author(s):  
Verónica Castañeda‐Fernández‐de‐Lara ◽  
Elisa Serviere‐Zaragoza ◽  
Sergio Hernández‐Vázquez ◽  
Mark J. Butler
Keyword(s):  
Feeding Ecology ◽  
Baja California ◽  
Pacific Coast ◽  
Spiny Lobster ◽  
Baja California Sur ◽  
Panulirus Interruptus ◽  
The Pacific

scholarly journals Hyperiid amphipods from the Gulf of Ulloa and offshore region, Baja California: Intermittent use of the coastal shelf

2020 ◽  
Author(s):  
Bertha E. Lavaniegos
Keyword(s):  
Baja California ◽  
Coastal Upwelling ◽  
Spiny Lobster ◽  
Abundant Species ◽  
Small Scale ◽  
Amphipod Species ◽  
Panulirus Interruptus ◽  
Coastal Shelf ◽  
Northern Regions ◽  
Offshore Region

AbstractHyperiid amphipod species from the Gulf of Ulloa, Baja California, and the adjacent region (from shelf break to 200 km offshore) were analyzed in order to evaluate diversity and abundances in this productive area that supports small-scale commercial fisheries such as barred sand bass (Paralabrax nebulifer), California spiny lobster (Panulirus interruptus), abalones, clams, and others. Strong coastal upwelling events were observed during summer seasons of the period 2002-2008 between Punta Eugenia and Punta Abreojos. The upwelling plumes at Punta Abreojos are projected southward in slope waters bordering the coastal shelf of the Gulf of Ulloa, contributing to the separation of coastal and oceanic regions, and explain differences in amphipod diversity and abundances. In the offshore region, the most abundant species were Vibilia armata, Lestrigonus schizogeneios, Primno brevidens, and Eupronoe minuta, similar to previous findings in northern regions of Baja California and southern California. However, their abundances were lower (between 10 and 30 individuals/1000 m3), only reaching 20-50% of abundance levels reported off northern Baja California. In the coastal shelf of the Gulf of Ulloa, amphipods were virtually absent during 2002, 2003 and 2006. However, during 2004 and 2005, abundances of P. brevidens increased (54 and 20 ind/1000 m3, respectively). Moreover, during 2007, abundances of L. schizogeneios, P. brevidens, Lycaea nasuta, Lycaea pulex, and Simorhynchotus antennarius increased considerably (261, 39, 31, 68, 416 ind/1000 m3, respectively), indicating occasional utilization of the coastal shelf by pelagic amphipods. Gelatinous organisms paralleled changes in hyperiid populations and were particularly abundant in 2007 in the coastal shelf. Significant correlations of 17 amphipod species with gelatinous taxa, which are often used as host organisms by hyperiid amphipods, suggest that those organisms enhanced hyperiid abundance and promoted the progression onto the coastal shelf during some years of the 2002-2008 period.

Pleistocene refugia and their effects on the phylogeography and genetic structure of the wolf spiderPardosa sierra(Araneae: Lycosidae) on the Baja California Peninsula

2016 ◽  
Vol 44 (3) ◽  
pp. 367-379 ◽  
Author(s):  
Ricardo González-Trujillo ◽  
Miguel M. Correa-Ramírez ◽  
Eduardo Ruiz-Sanchez ◽  
Emiliano Méndez Salinas ◽  
María Luisa Jiménez ◽  
...  
Keyword(s):  
Genetic Structure ◽  
Baja California ◽  
Baja California Peninsula ◽  
Pleistocene Refugia
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