Over het archief
Het OWA, het open archief van het Waterbouwkundig Laboratorium heeft tot doel alle vrij toegankelijke onderzoeksresultaten van dit instituut in digitale vorm aan te bieden. Op die manier wil het de zichtbaarheid, verspreiding en gebruik van deze onderzoeksresultaten, alsook de wetenschappelijke communicatie maximaal bevorderen.
Dit archief wordt uitgebouwd en beheerd volgens de principes van de Open Access Movement, en het daaruit ontstane Open Archives Initiative.
Basisinformatie over ‘Open Access to scholarly information'.
| [ meld een fout in dit record ] | mandje (1): toevoegen | toon |
 |
| one publication added to basket [351903] | |
| Growth, maturity, and diet of the pearl whipray (Fontitrygon margaritella) from the Bijagós Archipelago, Guinea-Bissau Clements, O.N.; Leurs, G.; Witbaard, R.; Pen, I.; Verkuil, Y.I.; Govers, L.L. (2022). Growth, maturity, and diet of the pearl whipray (Fontitrygon margaritella) from the Bijagós Archipelago, Guinea-Bissau. PeerJ 10: e12894. https://dx.doi.org/10.7717/peerj.12894
Bijhorende data:
In: PeerJ. PeerJ: Corte Madera & London. e-ISSN 2167-8359, meer
|   |
| Beschikbaar in | Auteurs |
| Trefwoorden |
| Author keywords |
|
| Auteurs | Top | |
|
|
| Abstract |
The pearl whipray Fontitrygon margaritella ( Compagno & Roberts, 1984 ) is a common elasmobranch in coastal western African waters. However, knowledge on their life-history and trophic ecology remains limited.Therefore, we aimed to determine the growth, maturity and diet of F. margaritella from the Bijagós Archipelago in Guinea-Bissau. Growth was modelled with: von Bertalanffy, Gompertz and logistic functions. Model selection revealed no model significantly outperformed another. The sampled age ranged from less than 1 to 7 years (1.8 ± 1.9 cm, mean ± standard deviation) and size (disc width) ranged from 12.2 to 30.6 cm (18.7 ± 5.2 cm). Size-at-maturity was estimated at 20.3 cm (95% CI [18.8–21.8 cm]) for males and 24.3 cm for females (95% CI [21.9–26.5 cm]), corresponding ages of 2.2 and 3.9 years. The diet differed significantly among young-of-the-year (YOY), juveniles and adults (p = 0.001). Diet of all life stages consisted mainly of crustaceans (27.4%, 28.5%, 33.3%) and polychaetes (12.5%, 26.7%, 20.3%), for YOY, juveniles and adults respectively. This study shows that F. margaritella is relatively fast-growing, matures early and experiences ontogenetic diet shifts. Theseresults contribute to status assessments and conservation efforts of F. margaritella and closely related species. |
| Top | Auteurs |
