A5044660090- Marine and fisheries research
- Fish Ecology and Management Studies
- Isotope Analysis in Ecology
- Marine Bivalve and Aquaculture Studies
- Coral and Marine Ecosystems Studies
- Identification and Quantification in Food
- Fish Biology and Ecology Studies
- Marine and coastal ecosystems
- Genetic diversity and population structure
- Oceanographic and Atmospheric Processes
- Aquaculture Nutrition and Growth
- Animal Ecology and Behavior Studies
- Coastal and Marine Management
- Marine Biology and Ecology Research
- Fish biology, ecology, and behavior
- Marine Invertebrate Physiology and Ecology
- Vestibular and auditory disorders
- Crustacean biology and ecology
- Marine Ecology and Invasive Species
NOAA National Marine Fisheries Service Southeast Fisheries Science Center
2015-2024
NOAA National Marine Fisheries Service
2014-2024
National Oceanic and Atmospheric Administration
2010-2023
University of Phoenix
2015-2021
MEPS Marine Ecology Progress Series Contact the journal Facebook Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout JournalEditorsTheme Sections 619:53-68 (2019) - DOI: https://doi.org/10.3354/meps12958 Stable isotope analysis indicates resource partitioning and trophic niche overlap in larvae of four tuna species Gulf Mexico Raúl Laiz-Carrión1,*, Trika Gerard2,3, Justin J. Suca4, Estrella Malca2,5, Amaya Uriarte1, José M. Quintanilla1, Sarah...
Abstract Western Atlantic bluefin tuna (ABT) undertake long-distance migrations from rich feeding grounds in the North to spawn oligotrophic waters of Gulf Mexico (GoM). Stock recruitment is strongly affected by interannual variability physical features associated with ABT larvae, but nutrient sources and food-web structure preferred habitat, edges anticyclonic loop eddies, are unknown. Here, we describe goals, context, design major findings an end-to-end process study conducted during peak...
The present study uses stable isotopes of nitrogen and carbon (δ15Nandδ13C) as trophic indicators for Atlantic bluefin tuna larvae (BFT) (6–10 mm standard length) in the highly contrasting environmental conditions Gulf Mexico (GOM) Balearic Sea (MED). These regions are differentiated by their temperature regime relative productivity, with GOM being significantly warmer more productive. MED BFT showed highest δ15N signatures, implying an elevated position above underlying microzooplankton...
Abstract During A pril to J une 2009, a large bolus of mazon R iver water impacted the northeastern C aribbean S ea. Shipboard observations collected near aba B ank, U . and ritish V irgin I slands, negada P assage showed low surface salinity (35.76 ± 0.05 Practical Salinity Unit (PSU)), elevated temperature (26.77 0.14°C), high chlorophyll‐ (1.26 0.21 mg m −3 ) dissolved oxygen (4.90 0.06 mL L −1 in 20‐ 30‐m thick layer riverine plume. The was ~1°C warmer, 1 PSU fresher, 0.3 higher 1.2 than...
Atlantic bluefin tuna (ABT) (
Abstract The availability of nitrogen (N) in ocean surface waters affects rates photosynthesis and marine ecosystem structure. In spite low dissolved inorganic N concentrations, export production oligotrophic is comparable to more nutrient replete regions. Prior observations raise the possibility that di-nitrogen (N2) fixation supplies a significant fraction supporting Gulf Mexico. this study, geochemical tools were used quantify relative absolute importance both subsurface nitrate N2 as...
We used linear inverse ecosystem modeling techniques to assimilate data from extensive Lagrangian field experiments into a mass-balance constrained food web for the Gulf of Mexico open-ocean ecosystem. This region is highly oligotrophic, yet Atlantic bluefin tuna (ABT) travel long distances feeding grounds in North spawn there. Our results show nutrient regeneration fueling primary productivity (mostly by cyanobacteria and other picophytoplankton) upper euphotic zone. The dominated microbial...
Abstract Bluefin tuna spawn in restricted areas of subtropical oligotrophic seas. Here, we investigate the zooplankton prey and feeding selectivity early larval stages Atlantic bluefin (ABT, Thunnus thynnus) rearing habitat Gulf Mexico. Larvae were collected during two multi-day Lagrangian experiments peak spawning May 2017 2018. categorized by flexion stage standard length. We identified, enumerated sized from gut contents ambient community. Ciliates quantitatively important (up to 9%)...
Temperature is often an important variable influencing the vertical position of fish larvae in water column. The same species may show different distributions areas with a strong near-surface seasonal thermocline compared to isothermal regions. In surface thermocline, tuna significant preference for warmer layers. Little known regarding larval distribution waters and on associated assemblages. We conducted stratified sampling using methodology fishing device (MOCNESS) two major spawning...
Globally, tunas are among the most valuable fish stocks, but also inherently difficult to monitor and assess. Samples of larvae Western Atlantic bluefin tuna Thunnus thynnus (Linnaeus, 1758) from standardized annual surveys in northern Gulf Mexico provide a potential source "offspring" for close-kin mark-recapture (CKMR) estimates abundance. However, spatial patchiness highly skewed numbers per tow suggest sampled may come small number parents, compromising precision CKMR. We used high...
Abstract Larval abundances of Atlantic bluefin tuna (ABT) in the Gulf Mexico are currently utilized to inform future recruitment by providing a proxy for spawning potential western ABT stock. Inclusion interannual variations larval growth is key advance needed translate abundance success. However, little known about drivers during first weeks life. We sampled patches larvae 3–4 day Lagrangian experiments May 2017 and 2018, assessed age rates from sagittal otoliths relative size categories...
Ecologically and economically important coral reef fishes are believed to migrate reefs from juvenile nursery areas such as sea grass mangrove habitats. Little is known about the migration corridors that exist between reefs, or timing of these migrations. This study investigated possibility identifying connections nearby adult habitats using stable isotope analysis otoliths gray snapper (Lutjanus griseus) (n= 71) yellowtail (Ocyuruschrysurus) (n=60), collected 10 sites along Florida Keys...
Atlantic bluefin tuna (ABT), Thunnus thynnus , is a globally important fishery resource. This oceanic top predator undertakes long-distance migrations from its nutrient-rich feeding grounds in the north to oligotrophic spawning grounds. Larvae are born mainly corresponding ecosystems of two well-established areas: Gulf Mexico (GoM) and Mediterranean Sea (MED). Stable isotopes analyses (SIA) δ 15 N 13 C have proven useful for understanding marine food webs evaluated larval ABT signatures...
The highly migratory Atlantic bluefin tuna (ABFT) is currently managed as two distinct stocks, in accordance with natal homing behavior and population structuring despite the absence of barriers to gene flow. Larval fish are valuable biological material for molecular ecology. However, they have hardly been used decipher ABFT structure, although providing genetic signal from successful breeders. For first time, cooperative field collection larvae during 2014 main spawning area each stock,...
The invasion of the western Atlantic by Indo-Pacific lionfish ( Pterois volitans / miles ) is a serious threat to ecological stability region. early life history remains poorly understood despite important role that larval supply plays reef fish population dynamics. In this study, we characterized patterns in horizontal and vertical distributions collected Caribbean, US Gulf Mexico from 19 ichthyoplankton surveys conducted 2009–2016. Using generalized additive models (GAMs), assessed...
ABSTRACT We used linear inverse ecosystem modeling techniques to assimilate data from extensive Lagrangian field experiments into a mass-balance constrained food web for the Gulf of Mexico open-ocean ecosystem. This region is highly oligotrophic, yet Atlantic Bluefin Tuna (ABT) travel long distances feeding grounds in North spawn there. Our results show that dominated by microbial loop (>80% net primary productivity respired heterotrophic bacteria and protists feed on them). In contrast,...
FisheriesVolume 40, Issue 9 p. 440-440 Conference Review 5th International Otolith Symposium Richard McBride, McBride [email protected] NOAA Fisheries' Northeast Fisheries Science Center, 166 Water Street, Woods Hole, MA, 02543Search for more papers by this authorJoseph O'Malley, Joseph O'Malley Pacific Islands Honolulu, HISearch authorTrika Gerard, Trika Gerard Southeast Miami, FLSearch authorBeverly Barnett, Beverly Barnett Panama City, author First published: 11 September 2015...
Abstract Swordfish Xiphias gladius (Linnaeus, 1758) are a circumglobal pelagic fish targeted by multiple lucrative fisheries. Determining the distribution of swordfish larvae is important for indicating reproductive activity and understanding early life history swordfish. We identify characterize larval distributions during peak spawning throughout Gulf Mexico western Caribbean Sea with generalized additive models ( GAM s) using catches ichthyoplankton surveys in April May 2010, 2011, 2012....
Two cohorts of Atlantic bluefin tuna (Thunnus thynnus) larvae were sampled in 2017 and 2018 during the peak spawning Gulf Mexico (GOM). We examined environmental variables, daily growth, otolith biometry stable isotopes found that GOM18 cohort grew at faster rates, with larger wider otoliths. Inter intra-population analyses (deficient vs. optimal growth groups) carried out for pre- post-flexion developmental stages to determine maternal trophodynamic influences on larval variability based...