Callichirus major. Carolinian ghost shrimp. Callichirus major. ADW Pocket Guides on the iOS App Store! The Animal Diversity Web team is excited to announce. Biologia populacional de Callichirus major (Say, ) (Crustacea: Callianassidae) na Praia de Piedade, Brasil. Flavio de Almeida Alves-JúniorI, Marina de Sá. Category:Callichirus major Pleocyemata • Infraordo: Axiidea • Familia: Callianassidae • Genus: Callichirus • Species: Callichirus major.
|Published (Last):||9 December 2012|
|PDF File Size:||2.79 Mb|
|ePub File Size:||13.77 Mb|
|Price:||Free* [*Free Regsitration Required]|
However, no significant difference was observed between the periods.
A small peak was observed in August, transition from the rainy to the dry period. A modification of Bhattacharya’s callichiruw for the analysis of mixtures of normal distributions.
Category:Callichirus major – Wikimedia Commons
The highest densities were found in beaches with well select very fine sands and gentle slope. We can conclude that the females are more abundant in the population, which is a pattern for callianassids of the Brazilian coast. The air temperature varied from This paper creates a baseline for further researches on C. Seasonal changes in the density of C. Of the Callianassidea species studied in Brazil, females were larger than males in Neocallichirus mirim Rodrigues, Pezzuto, and in C.
Sampling Samplings were under taken monthly from December to Novemberin the intertidal zone of Piedade beach, Pernambuco, Brazil, except in September, since no ghost shrimp was found at the beach. However, they observed monthly oscillations in the sex ratio; the females were more abundant from September to February and the males, from March to September, and in this study, the females were more abundant in March, with ovigerous females in March and November, and males more abundant in August, October, February and May.
According to Wennerthe deviations in the sex ratio can be a result of the differences in the life cycle, migration, mortality and growth.
Biodiversity Heritage Library
The reproductive period was determined based on the frequency of ovigerous females. As maiores densidades de C.
Thalassinidea on a southern Brazilian sandy beach. Studies with species of Callianassids are extremely xallichirus due to their utilization as bait in coastal areas. Journal of Experimental Marine Biology and Ecology1: An assessment of bait-collecting for Callianassa kraussi Stebbing in Langebaan Lagoon, western Cape, and of associated avian predation.
The recruitment of juveniles into the population Fig.
ADW: Callichirus major: PICTURES
Sampling was taken monthly from December to November Although callichiruss significant, it was considered regularly correlated. FAO Fisheries Circular16p. Anomura, Thalassinidea, Palinuridea, Astacidea.
At the laboratory, the individuals were identified and sexed according to Melo Thalassinidea on a southern Brazilian sandy beach. The sex ratio observed in our study corroborates these callichorus.
Souza I ; Carlos A. Thalassinidea under Laboratory Conditions. Besides, a decline in the frequency of individuals from 60 mm was observed. The total standing stock of the whole area was 2, individuals before summer’s months, with a mean density of de 4. Three equidistant points were selected in the initial, median and final portions of the beach: The burrow temperature was measured with a digital thermometer, and the sea water salinity, with a refractometer.
Journal of Experimental Marine Biology and Ecology Callianassidae na Praia de Piedade, Brasil. The monthly proportion of juveniles and adults was estimated and a Chi-square test was applied to determine if they differed significantly from the expected proportion 1: