Climatic conditions and nursery habitat quality provide indicators of reef fish recruitment strength

2017 ◽  
Vol 62 (5) ◽  
pp. 1868-1880 ◽  
Author(s):  
Shaun K. Wilson ◽  
Martial Depczynski ◽  
Thomas H. Holmes ◽  
Mae M. Noble ◽  
Ben T. Radford ◽  
...  
Keyword(s):  
Reef Fish ◽  
Habitat Quality ◽  
Nursery Habitat ◽  
Climatic Conditions ◽  
Fish Recruitment ◽  
Nursery Habitat Quality

scholarly journals PREDICTABILITY OF REEF FISH RECRUITMENT IN A HIGHLY VARIABLE NURSERY HABITAT

Ecology ◽  
2007 ◽  
Vol 88 (9) ◽  
pp. 2220-2228 ◽  
Author(s):  
Octavio Aburto-Oropeza ◽  
Enric Sala ◽  
Gustavo Paredes ◽  
Abraham Mendoza ◽  
Enric Ballesteros
Keyword(s):  
Reef Fish ◽  
Nursery Habitat ◽  
Fish Recruitment

Hydrodynamic decoupling of recruitment, habitat quality and adult abundance in the Caribbean spiny lobster: source - sink dynamics?

1997 ◽  
Vol 48 (8) ◽  
pp. 807 ◽  
Author(s):  
R. N. Lipcius ◽  
W. T. Stockhausen ◽  
D. B. Eggleston ◽  
L. S. Marshall Jr ◽  
B. Hickey
Keyword(s):  
Habitat Quality ◽  
Large Scale ◽  
Marine Reserve ◽  
Spiny Lobster ◽  
Marine Species ◽  
Nursery Habitat ◽  
Panulirus Argus ◽  
The Caribbean ◽  
Juvenile Density ◽  
Adult Abundance

Marine species possess dispersive stages that interconnect subpopulations, which may inhabit ‘source’ and ‘sink’ habitats, where reproduction and emigration either exceed or fall short of mortality and immigration, respectively. Postlarval supply, juvenile density and adult abundance of the Caribbean spiny lobster, Panulirus argus, were measured at four widely separated sites spanning >100 km in Exuma Sound, Bahamas. Adult abundance was lowest at a site with the highest postlarval supply and little nursery habitat; hence, it was tentatively classified as a sink. Circulation in Exuma Sound is dominated by large-scale gyres which apparently concentrate and advect postlarvae toward the nominal sink. The remaining three sites, including one marine reserve, had higher adult abundances despite lower postlarval supply, and are therefore tentatively classified as sources. Postlarval supply is probably decoupled from adult abundance by physical transport. Adult abundance is likely decoupled from postlarval supply by the effects of varying habitat quality upon postlarval and juvenile survival, as indicated by non-significant differences among sites in juvenile density. It appears that some sites with suitable settlement and nursery habitat are sources of spawning stock for Panulirus argus, whereas others with poor habitat are sinks despite sufficient postlarval influx.

scholarly journals Effects of Marine Reserves versus Nursery Habitat Availability on Structure of Reef Fish Communities

PLoS ONE ◽  
2012 ◽  
Vol 7 (6) ◽  
pp. e36906 ◽  
Author(s):  
Ivan Nagelkerken ◽  
Monique G. G. Grol ◽  
Peter J. Mumby
Keyword(s):  
Reef Fish ◽  
Marine Reserves ◽  
Fish Communities ◽  
Nursery Habitat ◽  
Habitat Availability

scholarly journals Climatic influence on reef fish recruitment and fisheries

2010 ◽  
Vol 410 ◽  
pp. 283-287 ◽  
Author(s):  
O Aburto-Oropeza ◽  
G Paredes ◽  
I Mascareñas-Osorio ◽  
E Sala
Keyword(s):  
Reef Fish ◽  
Climatic Influence ◽  
Fish Recruitment

Feeding strategies and body condition of juvenile European flounder Platichthys flesus in a nursery habitat

2020 ◽  
Vol 100 (5) ◽  
pp. 795-806
Author(s):  
C. Mendes ◽  
S. Ramos ◽  
M. Elliott ◽  
A. A. Bordalo
Keyword(s):  
Age Groups ◽  
Nursery Habitat ◽  
Trophic Levels ◽  
Feeding Strategies ◽  
Nursery Ground ◽  
Platichthys Flesus ◽  
Nursery Habitat Quality ◽  
C Value ◽  
European Flounder ◽  
Condition Indices

AbstractEstuarine habitats are major nurseries for the European flounder Platichthys flesus, with different year classes sharing food and space resources. Hence, an understanding of feeding strategies that optimize resource use and maintain carrying capacity is fundamental for sustainable and successful ecosystem management. The main feeding areas of juvenile European flounder (including 0-group and 1-group age classes) in the Lima estuary (northern Portugal) nursery ground were investigated by integrating stomach content analyses with stable isotopic values (δ13C and δ15N) and fish condition indices (Fulton K and RNA:DNA ratio). The 0-group flounder that were associated with the upstream section of the estuary presented the lowest δ13C value (−25.58 ± 1.86‰), while 1-group flounder exhibited a higher δ13C value (−22.59 ± 2.51‰), indicating use of the more saline areas of the estuary (lower and middle sections). The two age groups did not differ in terms of δ15N (0-group: 13.93 ± 0.29‰; 1-group: 13.50 ± 0.96‰), indicating similar trophic levels. The low salinity upper estuary was the main feeding area of 0-group flounder (74%), while 1-group flounder fed along the estuary both upstream (52%) and downstream (48%). Juvenile flounder showed high individual condition based on the Fulton K index (0-group: 1.05 ± 0.08; 1-group: 1.07 ± 0.05) and RNA:DNA (0-group: 1.70 ± 0.70; 1-group: 1.41 ± 0.47). These indices deal with fish health, and hence indicate nursery habitat quality. It is concluded that in this temperate nursery habitat, different feeding strategies sustained the condition of the European flounder juveniles, compared with other flounder populations.

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