| Full text | |
| Author(s): |
Carvalho-Batista, Abner
[1]
;
Castilho, Antonio L.
[2]
;
Fransozo, Adilson
[2]
;
Costa, Rogerio C.
[1]
Total Authors: 4
|
| Affiliation: | [1] UNESP, Fac Ciencias, LABCAM Lab Biol Camaroes Marinhos & Agua Doce, Dept Ciencias Biol, NEBECC, BR-17033360 Bauru, SP - Brazil
[2] UNESP, Dept Zool, Inst Biociencias, NEBECC, BR-18618970 Botucatu, SP - Brazil
Total Affiliations: 2
|
| Document type: | Journal article |
| Source: | CRUSTACEANA; v. 85, n. 10, p. 1179-1191, SEP 2012. |
| Web of Science Citations: | 2 |
| Abstract | |
Artemesia longinaris Spence Bate, 1888 is an endemic shrimp of the western South Atlantic. The objective of the present study was to analyse diel variation in the abundance and size of A. longinaris in the Ubatuba region, state of Sao Paulo, Brazil, during the year 2000. During each season of the year, collections were made during the day and night along 8 transects at depths ranging from 5 to 40 m. The water temperature and salinity was measured during sampling, and sediment samples were taken for the analysis of texture. The shrimp were more abundant at night at all stations and transects, except at a depth of 15 m during the spring (chi(2), p < 0.05). In the study region A. longinaris conformed to the burying model, in which shrimp are active during the night and only occasionally emerge during the day. However, in periods when juveniles are highly abundant and a decrease in temperature occurs, the shrimp established themselves in shallower areas of the bay (5 to 15 m) where the main sediment was silt and clay, and not in deeper areas (20 to 40 m). In this case, we observed a change in the burying pattern: individuals were active during the day as well as at night. Only in spring it was possible to observe the decrease in average size of individuals collected during the day, due to the peak of juveniles in this season. As a consequence, the sediment type and life cycle of the species appeared to modify the yield of shrimp during the periods analysed. (AU) | |
| FAPESP's process: | 09/54672-4 - Reproductive biology and dynamic population of the Penaeoidean shrimps (Crustacea, Decapoda) from southeastern Brazilian coast: latitudinal effect and suggestion for fishery control |
| Grantee: | Rogério Caetano da Costa |
| Support Opportunities: | Regular Research Grants |
| FAPESP's process: | 10/50188-8 - Decapod crustaceans: multi-disciplinary characterization of the sea biodiversity of the State of São Paulo (taxonomy, spermiotaxonomy, molecular biology and population dynamics) |
| Grantee: | Fernando Luis Medina Mantelatto |
| Support Opportunities: | BIOTA-FAPESP Program - Thematic Grants |