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Se listan 319 especies de moluscos marinos ya recolectados por varias personas yĮxpediciones científicas en la Isla Gorgona (Litoral Pacífico de Colombia, provincia Details of specific ecological associations,morphological variation, and life history strategies are also summarized. Distributional data, diagnoses, and references toeach of the 19 species of the group from the Western Atlantic Region are presented in this report.The 11 species known from the Gulf of Mexico are illustrated. Accurate inventories of the Gulf fauna have been handicapped by difficulty inseparating these shrimps at the specific level. Its many species are distinguished from each other by subtle, and oftenvariable, characters. Often known as snapping shrimps because of the popping soundmade by the major first pereopod when the chela is closed rapidly, members of this genus areimportant components of coral reef and live bottom communities in all tropical and subtropical seas.The Gambarelloides group (a well-defined, homogeneous group within the genus but lackingformal subgeneric status) contains over half the described species of Synalpheus in the Gulf ofMexico and Caribbean. The genus Synalpheus Bate, 1888, is one of the most diverse and widely distributed generaof caridean shrimps in the world. Se hace énfasis en la importancia de proteger recursos como éste, que en otros lugares del Caribe ya han sido casi aniquilados. Se registró actividad reproductiva en abril, mayo, junio y julio, y se describen las masas de huevos y estructuras que las componen. Se encontró una sola clase de tamaños de individuos y una casi completa ausencia de juveniles.

El grueso labio externo es constantemente erodado por animales perforadores y reemplazado en grosor por el caracol. Los caracoles deĮsta población se caracterizan por una concha masiva totalmente recubierta de algas,Ĭorales, esponjas y otros organismos. Laĭensidad promedio más alta registrada fue de 1 caracol/14 m * y la más baja de 1 caracol/ģ3 m² Estas variaciones en la densidad parecen estar relacionados con las condicionesĪmbientales, especialmente agitación y temperatura del agua. La población ocupa un área aproximada de 98400 m².

Se estudia una población de Strombus gigas localizada a 12 m de profundidad en la Ensenada de Nenguange. There are 23 species of chaenopsine blennies in the southern Caribbean, which is 61% of the total West Indian fauna of the group, while in the Northern Caribbean-Antillean Subprovince the number of known species is 20. Eight of the thirteen chaenopsines endemic to the Southern Caribbean Subprovince belong to genera, subgenera, or species-groups of Chaenopsinae more widety distributed in the eastern Pacific than in the Caribbean, being therefore pacificophile species. Bahamas, Bermuda, and the Antilles and the Southern Caribbeanįrom Costa Rica to the island of Trinidad. the Northern Caribbean-Antillean from Isla de San Andrés (12.5°N) in the western Caribbean to Cabo Catoche (21 5°N, México), The división of the West Indian Zoogeographical Province made by Briggs (1974) is unnatural, since the fish fauna of Belize, Florida and the Bahamas

The nominal genera Protemblemaria and Emblemariopsis are herewith considered synonyms of Coralliozetus, since they share two derived characters: small size and sexual dimorphism in the color of the head, and are rather similar in several other characteristics. The subfamily includes eight genera: Mccoskerichthys, Coralliozetus, Acanthemblemaria, Ekemblemaria, Emblemaria, Hemiemblemaria, Lucayablennius, andĬhaenopsis. The chaenopsine blennies are an homogeneous group which may be considered a subfamily of the Clinidae, since the existing evidence is not enough to give them familial As with many stock assessment problems, tailoring an estimating procedure around known existing data can be more productive than deciding on a procedure and then trying to find the required data in someone else's files.Authors of papers contributed to the report: B.S. A second objective was to compile at the workshop pertinent data held by the major research institutions on Chesapeake Bay so all participants could see the kinds and extent of existing data. In one sense these objectives were simply a means for organizing our discussions. Specifically, we intended to address, and hoped to estimate, the basic parameters of an exploited stock - growth, mortality, natality, migration rates, sex ratios and abundance. Our goal was to generate a summary of knowledge of blue crab stock dynamics. This workshop was convened to begin building a foundation of understanding for developing and evaluating proposed measures for the rational management of the blue crab fishery in Chesapeake Bay.