Open WL Archief (OWA)

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 (0): toevoegen | toon

---

Spatio-temporal distribution and population dynamics of two sympatric species: The rock shrimps Sicyonia dorsalis Kingsley, 1878 and Sicyonia typica (Boeck, 1864) (Penaeoidea: Sicyoniidae) on the coast of Ilhéus, Bahia, northeastern Brazil Tavares, R.G.; Paschoal, L.R.P.; Guimarães, F.J.; Brandão, S.N.; da Conceição Guerreiro Couto, E. (2025). Spatio-temporal distribution and population dynamics of two sympatric species: The rock shrimps Sicyonia dorsalis Kingsley, 1878 and Sicyonia typica (Boeck, 1864) (Penaeoidea: Sicyoniidae) on the coast of Ilhéus, Bahia, northeastern Brazil. Arthropoda 3(1): 1. https://dx.doi.org/10.3390/arthropoda3010001 In: Arthropoda. MDPI AG: Switzerland. e-ISSN 2813-3323, meer

---

Beschikbaar in	Auteurs
VLIZ: Open access 411635 [ download pdf ]

---

Trefwoorden

ASW, Brazil, Bahia Environmental factors Population characteristics > Population structure > Sex ratio Sicyonia dorsalis Kingsley, 1878 [WoRMS]; Sicyonia typica (Boeck, 1864) [WoRMS] Bahia [Marine Regions]

Author keywords

Almada River; bycatch; shrimp trawling; southern Bahia

---

Auteurs		Top
Tavares, R.G. Paschoal, L.R.P. Guimarães, F.J.	Brandão, S.N., meer da Conceição Guerreiro Couto, E.

---

Abstract

Rock shrimps (Sicyonia dorsalis and Sicyonia typica) are commonly caught as bycatch during shrimp trawling along the Brazilian coast, but are not commercially exploited due to their small size and hard carapace. This study evaluated their spatio-temporal distribution, size classes, and sex ratio near the Almada River Estuary, Ilhéus, Bahia, Northeastern Brazil, and tested correlations between environmental factors and species abundance. Samples were collected monthly using double-rig trawl nets in the estuary and along transects at depths of 5–35 m. Bottom water and sediment samples were obtained for analyses of environmental factors. In total, 5336 individuals of S. dorsalis and 303 individuals of S. typica were collected. No individuals were recorded in the estuary. Both species were significantly more abundant between 25 and 35 m, where fine sediment with high levels of organic matter occurred. Considering the temporal variation, their abundance decreased during the rainy season, coinciding with increased river flow. Organic matter content, salinity, and water transparency were the primary environmental factors influencing abundance. Females were generally larger and predominant compared to males, likely due to life cycle dynamics. Despite being congeneric and sympatric, the species exhibited distinct population patterns, possibly to avoid niche overlap and competition.

---

Alle informatie in het Integrated Marine Information System (IMIS) valt onder het VLIZ Privacy beleid

Top | Auteurs

IMIS is ontwikkeld en wordt gehost door het VLIZ.