Colour polymorphism and genetic structure in the cannonball jellyfish (Stomolophus meleagris, L. Agassiz, 1860) in the Gulf of California

2021 ◽  
pp. 1-15
Author(s):  
Cintya Nevárez-López ◽  
Norma Hernández-Saavedra ◽  
Arturo Sánchez-Paz ◽  
Delia Rojas-Posadas ◽  
Adriana Muhlia-Almazán ◽  
...  
Keyword(s):  
Genetic Structure ◽  
Gulf Of California ◽  
Colour Polymorphism ◽  
Stomolophus Meleagris

scholarly journals Diverging Genetic Structure of Coexisting Populations of the Black Storm-Petrel and the Least Storm-Petrel in the Gulf of California

2020 ◽  
Vol 13 ◽  
pp. 194008292094917
Author(s):  
Misael D. Mancilla-Morales ◽  
Santiago Romero-Fernández ◽  
Araceli Contreras-Rodríguez ◽  
José J. Flores-Martínez ◽  
Víctor Sánchez-Cordero ◽  
...  
Keyword(s):  
Genetic Diversity ◽  
Genetic Structure ◽  
Population Genetic Structure ◽  
Mate Selection ◽  
Gulf Of California ◽  
Population Genetic ◽  
Life Histories ◽  
Gene Diversity ◽  
Isolation By Distance ◽  
Storm Petrel

Estimations on the influence of evolutionary and ecological forces as drivers of population gene diversity and genetic structure have been performed on a growing number of colonial seabirds, but many remain poorly studied. In particular, the population genetic structure of storm-petrels (Hydrobatidae) has been evaluated in only a few of the 24 recognized species. We assessed the genetic diversity and population structure of the Black Storm-Petrel ( Hydrobates melania) and the Least Storm-Petrel ( Hydrobates microsoma) in the Gulf of California. The two species were selected because they are pelagic seabirds with comparable ecological traits and breeding grounds. Recent threats such as introduced species of predators and human disturbance have resulted in a decline of many insular vertebrate populations in this region and affected many different aspects of their life histories (ranging from reproductive success to mate selection), with a concomitant loss of genetic diversity. To elucidate to what extent the population genetic structure occurs in H. melania and H. microsoma, we used 719 base pairs from the mitochondrial cytochrome oxidase c subunit I gene. The evaluation of their molecular diversity, genetic structure, and gene flow were performed through diversity indices, analyses of molecular and spatial variance, and isolation by distance (IBD) across sampling sites, respectively. The population genetic structure (via AMOVA and SAMOVA) and isolation by distance (pairwise p-distances and FST/1– FST (using ΦST) were inferred for H. microsoma. However, for H. melania evidence was inconclusive. We discuss explanations leading to divergent population genetic structure signatures in these species, and the consequences for their conservation.

Population genetic structure of dolphinfish (Coryphaena hippurus) in the Gulf of California, using microsatellite loci

2010 ◽  
Vol 105 (3) ◽  
pp. 172-177 ◽  
Author(s):  
Miguel A. Tripp-Valdez ◽  
Francisco J. García de León ◽  
Sofía Ortega-García ◽  
Daniel Lluch-Cota ◽  
Juana López-Martínez ◽  
...  
Keyword(s):  
Genetic Structure ◽  
Population Genetic Structure ◽  
Microsatellite Loci ◽  
Gulf Of California ◽  
Population Genetic ◽  
Coryphaena Hippurus

scholarly journals Association of three Carangidae juvenile fishes with cannonball jellyfish Stomolophus meleagris in Bahía de La Paz, Gulf of California

2019 ◽  
Vol 53 (3) ◽  
pp. 387
Author(s):  
Mónica Reza ◽  
Lucía Ocampo ◽  
Lucía Campos-Dávila
Keyword(s):  
Gulf Of California ◽  
Fishery Management ◽  
La Paz ◽  
Early Juvenile ◽  
Different Seasons ◽  
Stomolophus Meleagris ◽  
First Time

Three species of Carangidae family were caught incidentally during collection of cannonball jellyfish (Stomolophus meleagris) in Bahía de La Paz, Gulf of California, Mexico. All fish were measured, preserved and identified as post flexion larvae and early juvenile of Chloroscombrus orqueta, Hemicaranx leucurus and Caranx caballus. C. orqueta stood out in frequency and abundance. H. leucurus were found only in autumn, while the others were present in different seasons. This is the first time recording H. leucurus and C. caballus associating with cannonball jellyfish. Further studies must evaluate this association as all fish caught were at vulnerable stages, and must be considered in jellyfish fishery management.

Trophic spectrum and feeding pattern of cannonball jellyfish Stomolophus meleagris (Agassiz, 1862) from central Gulf of California

2015 ◽  
Vol 96 (6) ◽  
pp. 1217-1227 ◽  
Author(s):  
Francisco J. Álvarez-Tello ◽  
Juana López-Martínez ◽  
Daniel B. Lluch-Cota
Keyword(s):  
Gulf Of California ◽  
Developmental Stages ◽  
Trophic Niche ◽  
Feeding Pattern ◽  
Gut Contents ◽  
Fish Eggs ◽  
Total Fish ◽  
Ecological Importance ◽  
Veliger Larvae ◽  
Stomolophus Meleagris

The diet and feeding pattern of scyphomedusa Stomolophus meleagris (Rhizostomeae) was studied, by comparing stomach samples from different developmental stages and environmental zooplankton with the aim to determine diet composition, trophic niche breadth, selectivity and feeding overlap of this edible jellyfish species. Samplings were performed during April and December 2010 and in January 2011, in the coastal lagoon Las Guásimas (27°49′–27°54′N 110°40′–110°35′W), central Gulf of California, which consisted of zooplankton tows and jellyfish collections for stomach content. More than 39 prey items were identified in the gut contents (N = 69), from which eight taxa formed over 90% of the total. Fish eggs were considered main prey (58.6%), copepods (10.8%), veliger larvae of gastropod (13.0%) and bivalve (12.7%) were secondary prey while cirriped and decapod larvae were incidental prey (<3%). However, these proportions varied significantly between small, medium and large size classes of medusa as well as number and type of prey increasing as a function of medusa size. Values of Levin's index confirmed S. meleagris is a specialist predator and Pearre's index showed positive selection of fish eggs, gastropods, bivalves and cirripeds while selectivity was negative for copepods and appendicularians. The relative timing of these changes suggests that ontogenetic processes are closely related with shift in the diet, which indicates increasing predation pressure during development of the medusoid stage of this species, thus emphasizing their ecological importance in coastal ecosystems.

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