Publication
Age and growth, reproduction and diet of a sublittoral population of the rock goby Gobius paganellus (Teleostei, Gobiidae)
| dc.contributor.author | Azevedo, José M. N. | |
| dc.contributor.author | Simas, Ana M. V. | |
| dc.date.accessioned | 2009-09-29T14:19:36Z | |
| dc.date.available | 2009-09-29T14:19:36Z | |
| dc.date.issued | 2000 | |
| dc.description | Copyright © 2000 Kluwer Academic Publishers. Printed in the Netherlands. | en |
| dc.description.abstract | Basic biological information for a sublittoral population of the rock goby Gobius paganellus Linnaeus, 1758 is presented based on a 2-year study involving 1680 specimens. The length-weight relationship was given by TW = 0.0089 * TL^3,163 (where TW= total weight in g; TL= total length in mm). Age at length data were inferred by modal analysis of the monthly length-frequency distributions. The parameters of the fitted Von Bertalanffy growth equation (with seasonal component, birth date on the 1st of January) were L1 = 13.8 cm; K = 0.73 yr^-1; to = -0.22 yr; C = 0.95; W = 0.07. This growth rate is much higher than that described for northern Europe populations (where K is about 0.3 yr^-1) and is probably associated with a shorter life span. Macroscopic examination of the gonads, and analysis of the monthly values of the gonadosomatic index, indicated that reproduction occurs in winter and early spring, with a maximum in February and March, when water temperatures are lowest. Individuals become sexually mature around 6-7 cm TL, a size that can be reached in less than 1 year. By contrast, individuals of this goby in the British Isles mature in their second or third year. Stomach contents were mainly small benthic invertebrates, predominantly crustaceans. | en |
| dc.identifier.citation | Azevedo, J.M.N. & A.M.V. Simas (2000). "Age and growth, reproduction and diet of a sublittoral population of the rock goby Gobius paganellus (Teleostei, Gobiidae)". «Hydrobiologia», 440(1-3): 129-135. http://dx.doi.org/10.1023/A:1004102723234. | en |
| dc.identifier.issn | 0018-8158 (Print) | en |
| dc.identifier.issn | 1573-5117 (Online) | en |
| dc.identifier.uri | http://hdl.handle.net/10400.3/338 | |
| dc.language.iso | eng | pt |
| dc.publisher | Kluwer Academic Publishers | en |
| dc.relation.publisherversion | http://dx.doi.org/10.1023/A:1004102723234 | por |
| dc.subject | Fish Biology | en |
| dc.subject | Length-weight Relationship | en |
| dc.subject | Length-frequency Distributions | en |
| dc.subject | Modal Analysis | en |
| dc.subject | Growth Rate | en |
| dc.subject | Life Span | en |
| dc.subject | Gobiidae | pt |
| dc.subject | Gobius paganellus | pt |
| dc.title | Age and growth, reproduction and diet of a sublittoral population of the rock goby Gobius paganellus (Teleostei, Gobiidae) | en |
| dc.type | journal article | |
| dspace.entity.type | Publication | |
| oaire.citation.endPage | 135 | pt |
| oaire.citation.issue | (1-3) | en |
| oaire.citation.startPage | 129 | pt |
| oaire.citation.title | Hydrobiologia | pt |
| oaire.citation.volume | 440 | en |
| rcaap.rights | openAccess | pt |
| rcaap.type | article | pt |