Fases posplanctónicas de Petrolisthes armatus (Gibbes) (Decapoda, Porcellanidae) comensales con la lapa Crucibulum (Crucibulum) spinosum (Sowerby) (Gastropoda, Caliptraeidae) en el Alto Golfo de California, México
Loading...
Date
Authors
Campos González, Ernesto
Macías Chávez, Leticia J.
Journal Title
Journal ISSN
Volume Title
Publisher
Universidad de Costa Rica
Abstract
Description
Este trabajo registra por primera ocasión a megalopas y juveniles tempranos de P. armatus como comensales (sensu Noble y Noble 1971) y discute las implicaciones inherentes a la relación simbiótica.La distribución de los porcelánidos en las lapas colectadas de agosto a octubre se muestra en la Fig. 1. El 75% de ellos se alojaron en huéspedes de entre 8 y 17 mm de alto, los cuales constituyeron las tallas más frecuentes de la muestra total (83.33%). Es posible que la ausencia de P. armatus en lapas menores a 8 mm se deba a que el espacio potencial de alojamiento no permita la infestación o una estancia adecuada para el porcelánido.
Postplanktonic stages of Petrolisthes armatus are recorded as commensals of the limpet Crucibulum (C.) spinosum. Eigthy eigth limpets (18.8%) harbored one megalopa or one juvenile of this porcellanid. The monthly prevalence in aproximately 157 limpets collected from August to October was 18.47%, 28.02% and 9.74% respectively. This allowed us to establish one period and a half of recruitment for this crab in the upper Gulf of California. The gut contents of both species are quite different and we inferred that the commensalistic relationship is fur shelter. This diminishes the crab's vulnerability to predation at high-tide, and permits escape from desiccation at low-tide.
Postplanktonic stages of Petrolisthes armatus are recorded as commensals of the limpet Crucibulum (C.) spinosum. Eigthy eigth limpets (18.8%) harbored one megalopa or one juvenile of this porcellanid. The monthly prevalence in aproximately 157 limpets collected from August to October was 18.47%, 28.02% and 9.74% respectively. This allowed us to establish one period and a half of recruitment for this crab in the upper Gulf of California. The gut contents of both species are quite different and we inferred that the commensalistic relationship is fur shelter. This diminishes the crab's vulnerability to predation at high-tide, and permits escape from desiccation at low-tide.