2024-03-29T09:00:46Zhttp://digital.csic.es/dspace-oai/requestoai:digital.csic.es:10261/173462020-11-19T07:36:16Zcom_10261_123com_10261_8col_10261_376
Relationship between condition and recruitment success of red shrimp (Aristeus antennatus) in the Balearic Sea (Northwestern Mediterranean)
Carbonell, Aina
Lloret, Josep
Demestre, Montserrat
Red shrimp
Sex ratio
Size at maturity
Reproductive and recruitment potential
Condition index
Balearic Islands
11 pages, 8 figures, 3 tables.-- Available online Nov 9, 2007.
This study evaluates the reproductive potential and condition of the red shrimp (Aristeus antennatus) population inhabiting the waters around the Balearic Islands (Northwestern Mediterranean Sea), between 1991 and 2004. Red shrimp is one of the most valuable exploited demersal fishery resources in the western Mediterranean. To assess the condition of this species, we use two indices based on weight and length data, one including the gonad weight and another excluding it. Different biological parameters of the population dynamics and reproductive biology, such as sex-ratio, maturity, gonadosomatic index and presence of the spermatophore in females have also been analysed. A negative relationship was found between the gonadosomatic index and the condition of red shrimp, indicating that energy reserves are transferred from the body to the gonad during the reproductive period. The condition of adults reached minimum values during the maturation and spawning period after mating, when the gonadosomatic index, the spermatophore presence in females and the proportion of females in the population were highest. The relationship between the condition of adults during the months prior to spawning and the number of recruits in the following year was significant and positive. This relationship was stronger when only male condition was considered, suggesting that males have an important role on the reproductive potential of this species. Overall, our results suggest that condition of red shrimp, particularly males, is an important aspect for the reproductive and recruitment success of this species. The observed decreasing trend in male condition over years may raise concern on the future reproductive potential of that population.
The authors thank the IDEA project coordinators for their invitation to contribute this manuscript to the study of environmental effects on red shrimp of the Balearic Islands.
Peer reviewed
2009-10-01T10:56:03Z
2009-10-01T10:56:03Z
2008-06
artículo
http://purl.org/coar/resource_type/c_6501
Journal of Marine Systems 71(3-4): 403–412 (2008)
0924-7963
http://hdl.handle.net/10261/17346
10.1016/j.jmarsys.2007.02.028
en
https://doi.org/10.1016/j.jmarsys.2007.02.028
none
22195 bytes
application/pdf
Elsevier