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https://www.readbyqxmd.com/read/28331606/responses-of-coral-reef-fishes-to-past-climate-changes-are-related-to-life-history-traits
#1
Eduardo Ottimofiore, Camille Albouy, Fabien Leprieur, Patrice Descombes, Michel Kulbicki, David Mouillot, Valeriano Parravicini, Loïc Pellissier
Coral reefs and their associated fauna are largely impacted by ongoing climate change. Unravelling species responses to past climatic variations might provide clues on the consequence of ongoing changes. Here, we tested the relationship between changes in sea surface temperature and sea levels during the Quaternary and present-day distributions of coral reef fish species. We investigated whether species-specific responses are associated with life-history traits. We collected a database of coral reef fish distribution together with life-history traits for the Indo-Pacific Ocean...
March 2017: Ecology and Evolution
https://www.readbyqxmd.com/read/28331585/phylogenetics-and-biogeography-of-the-two-wing-flyingfish-exocoetidae-exocoetus
#2
Eric A Lewallen, Andrew J Bohonak, Carolina A Bonin, Andre J van Wijnen, Robert L Pitman, Nathan R Lovejoy
Two-wing flyingfish (Exocoetus spp.) are widely distributed, epipelagic, mid-trophic organisms that feed on zooplankton and are preyed upon by numerous predators (e.g., tunas, dolphinfish, tropical seabirds), yet an understanding of their speciation and systematics is lacking. As a model of epipelagic fish speciation and to investigate mechanisms that increase biodiversity, we studied the phylogeny and biogeography of Exocoetus, a highly abundant holoepipelagic fish taxon of the tropical open ocean. Morphological and molecular data were used to evaluate the phylogenetic relationships, species boundaries, and biogeographic patterns of the five putative Exocoetus species...
March 2017: Ecology and Evolution
https://www.readbyqxmd.com/read/28331392/marine-biodiversity-baseline-for-%C3%A3-rea-de-conservaci%C3%A3-n-guanacaste-costa-rica-published-records
#3
REVIEW
Jorge Cortés
The diversity of tropical marine organisms has not been studied as intensively as the terrestrial biota worldwide. Additionally, marine biodiversity research in the tropics lags behind other regions. The 43,000 ha Sector Marino of Área de Conservación Guanacaste (ACG, Marine Sector of Guanacaste Conservation Area), on the North Pacific coast of Costa Rica is no exception. For more than four decades, the terrestrial flora and fauna has been studied continuously. The ACG marine biodiversity was studied in the 1930's by expeditions that passed through the area, but not much until the 1990's, except for the marine turtles...
2017: ZooKeys
https://www.readbyqxmd.com/read/28322846/did-biogeographical-processes-shape-the-monogenean-community-of-butterflyfishes-in-the-tropical-indo-west-pacific-region
#4
M Reverter, T H Cribb, S C Cutmore, R A Bray, V Parravicini, P Sasal
Geographical distribution of parasite species can provide insights into the evolution and diversity of parasitic communities. Biogeography of marine parasites is poorly known, especially because it requires an understanding of host-parasite interactions, information that is rare, especially over large spatial scales. Here, we have studied the biogeographical patterns of dactylogyrid parasites of chaetodontids, one of the most well-studied fish families, in the tropical Indo-west Pacific region. Dactylogyrid parasites were collected from gills of 34 butterflyfish species (n = 560) at nine localities within an approximate area of 62 million km(2)...
March 17, 2017: International Journal for Parasitology
https://www.readbyqxmd.com/read/28317110/atlantic-frugivory-a-plant-frugivore-interaction-dataset-for-the-atlantic-forest
#5
Carolina Bello, Mauro Galetti, Denise Montan, Marco A Pizo, Tatiane C Mariguela, Laurence Culot, Felipe Bufalo, Fabio Labecca, Felipe Pedrosa, Rafaela Constantini, Carine Emer, Wesley R Silva, Fernanda R da Silva, Otso Ovaskainen, Pedro Jordano
The dataset provided here includes 8320 frugivory interactions (records of pairwise interactions between plant and frugivore species) reported for the Atlantic Forest. The dataset includes interactions between 331 vertebrate species (232 birds, 90 mammals, five fishes, one amphibian and three reptiles) and 788 plant species. We also present information on traits directly related to the frugivory process (endozoochory), such as the size of fruits and seeds and the body mass and gape size of frugivores. Data were extracted from 166 published and unpublished sources spanning from 1961 to 2016...
March 19, 2017: Ecology
https://www.readbyqxmd.com/read/28300282/stable-nitrogen-and-carbon-isotopes-in-sediments-and-biota-from-three-tropical-marine-food-webs-application-to-chemical-bioaccumulation-assessment
#6
Hui Zhang, Yun Teng, Tra Thi Thanh Doan, Yun Wei Yat, Sheot Harn Chan, Barry C Kelly
Studies of trophodynamics and contaminant bioaccumulation in tropical marine ecosystems are limited. This study employed stable isotope and trace contaminant analysis to assess sources of primary productivity, trophic interactions and chemical bioaccumulation behavior in two mangrove food webs and one offshore coastal marine food web in Singapore. Samples of sediment, phytoplankton, mangrove leaves, clams, snails, crabs, worms, prawns, and fishes were analyzed for stable carbon and nitrogen isotope values, as well as concentrations of persistent organic pollutants...
March 16, 2017: Environmental Toxicology and Chemistry
https://www.readbyqxmd.com/read/28300113/global-warming-and-recurrent-mass-bleaching-of-corals
#7
Terry P Hughes, James T Kerry, Mariana Álvarez-Noriega, Jorge G Álvarez-Romero, Kristen D Anderson, Andrew H Baird, Russell C Babcock, Maria Beger, David R Bellwood, Ray Berkelmans, Tom C Bridge, Ian R Butler, Maria Byrne, Neal E Cantin, Steeve Comeau, Sean R Connolly, Graeme S Cumming, Steven J Dalton, Guillermo Diaz-Pulido, C Mark Eakin, Will F Figueira, James P Gilmour, Hugo B Harrison, Scott F Heron, Andrew S Hoey, Jean-Paul A Hobbs, Mia O Hoogenboom, Emma V Kennedy, Chao-Yang Kuo, Janice M Lough, Ryan J Lowe, Gang Liu, Malcolm T McCulloch, Hamish A Malcolm, Michael J McWilliam, John M Pandolfi, Rachel J Pears, Morgan S Pratchett, Verena Schoepf, Tristan Simpson, William J Skirving, Brigitte Sommer, Gergely Torda, David R Wachenfeld, Bette L Willis, Shaun K Wilson
During 2015-2016, record temperatures triggered a pan-tropical episode of coral bleaching, the third global-scale event since mass bleaching was first documented in the 1980s. Here we examine how and why the severity of recurrent major bleaching events has varied at multiple scales, using aerial and underwater surveys of Australian reefs combined with satellite-derived sea surface temperatures. The distinctive geographic footprints of recurrent bleaching on the Great Barrier Reef in 1998, 2002 and 2016 were determined by the spatial pattern of sea temperatures in each year...
March 15, 2017: Nature
https://www.readbyqxmd.com/read/28291600/evidence-of-multiple-species-of-chilodonella-protozoa-ciliophora-infecting-australian-farmed-freshwater-fishes
#8
Giana Bastos Gomes, Terrence L Miller, David B Vaughan, Dean R Jerry, Christina McCowan, Tracey L Bradley, Kate S Hutson
Parasitic Chilodonella species, Chilodonella piscicola and Chilodonella hexasticha, cause considerable economic losses globally to freshwater farmed fish production. Some genetic studies of Chilodonella spp. have indicated that many species within the genus may form cryptic species complexes. To understand the diversity of Chilodonella spp. infecting Australian freshwater farmed fish, specimens were isolated from infected barramundi (Lates calcarifer) and Murray cod (Maccullochella peelii) from fish farms in tropical north Queensland (QLD), temperate Victoria (Vic) and New South Wales (NSW) for genetic and morphological analysis...
March 6, 2017: Veterinary Parasitology
https://www.readbyqxmd.com/read/28289806/estrogenic-effects-in-feral-male-common-carp-cyprinus-carpio-from-laguna-de-bay-philippines
#9
Michelle Grace V Paraso, Justinne Kaye C Morales, Angelo A Clavecillas, Ma Suzanneth Epifania G Lola
This study was conducted to measure 17β-estradiol (E2) levels in Laguna de Bay, Philippines and to examine feral male common carp for evidence of exposure to estrogenic pollutants. Analysis of water samples revealed E2 concentrations of 630 and 550 ng/L from the east and west bay of the lake, respectively. Plasma vitellogenin (VTG) in captured fish ranged from 506 to 4083 ng/mL. In comparison to the reference and west bay groups, fish from the east bay had higher plasma VTG concentrations and reduced gonadosomatic index (GSI)...
March 13, 2017: Bulletin of Environmental Contamination and Toxicology
https://www.readbyqxmd.com/read/28280563/body-size-trophic-position-relationships-among-fishes-of-the-lower-mekong-basin
#10
Chouly Ou, Carmen G Montaña, Kirk O Winemiller
Body size is frequently claimed to be a major determinant of animal trophic interactions, yet few studies have explored relationships between body size and trophic interactions in rivers, especially within the tropics. We examined relationships between body size and trophic position (TP) within fish assemblages in four lowland rivers of the Lower Mekong Basin in Cambodia. Stable isotope analysis (based on δ(15)N) was used to estimate TP of common fish species in each river, and species were classified according to occupation of benthic versus pelagic habitats and major feeding guilds...
January 2017: Royal Society Open Science
https://www.readbyqxmd.com/read/28262632/pufferfish-mortality-associated-with-novel-polar-marine-toxins-in-hawaii
#11
Thierry M Work, Peter D R Moeller, Kevin R Beauchesne, Julie Dagenais, Renee Breeden, Robert Rameyer, William J Walsh, Melanie Abecassis, Donald R Kobayashi, Carla Conway, James Winton
Fish die-offs are important signals in tropical marine ecosystems. In 2010, a mass mortality of pufferfish in Hawaii (USA) was dominated by Arothron hispidus showing aberrant neurological behaviors. Using pathology, toxinology, and field surveys, we implicated a series of novel, polar, marine toxins as a likely cause of this mass mortality. Our findings are striking in that (1) a marine toxin was associated with a kill of a fish species that is itself toxic; (2) we provide a plausible mechanism to explain clinical signs of affected fish; and (3) this epizootic likely depleted puffer populations...
March 6, 2017: Diseases of Aquatic Organisms
https://www.readbyqxmd.com/read/28254628/mitochondrial-genomic-comparison-of-clonorchis-sinensis-from-south-korea-with-other-isolates-of-this-species
#12
Daxi Wang, Neil D Young, Anson V Koehler, Patrick Tan, Woon-Mok Sohn, Pasi K Korhonen, Robin B Gasser
Clonorchiasis is a neglected tropical disease that affects >35 million people mainly in China, Vietnam, South Korea and some parts of Russia. The disease-causing agent, Clonorchis sinensis, is a liver fluke of humans and other piscivorous animals, and has a complex aquatic life cycle involving snails and fish intermediate hosts. Chronic infection in humans causes liver disease and associated complications including malignant bile duct cancer. Central to control and to understanding the epidemiology of this disease is knowledge of the specific identity of the causative agent as well as genetic variation within and among populations of this parasite...
February 22, 2017: Infection, Genetics and Evolution
https://www.readbyqxmd.com/read/28254007/ft-ir-and-raman-spectroscopies-determine-structural-changes-of-tilapia-fish-protein-isolate-and-surimi-under-different-comminution-conditions
#13
Yuka Kobayashi, Steven G Mayer, Jae W Park
Tilapia proteins refined by pH shift and water washing were chopped under various comminution conditions and their structural changes were investigated using Fourier transform infrared (FT-IR) and Raman spectroscopies. Both techniques revealed the degree of unfolding in protein structure increased when fish protein isolate (FPI) and surimi were chopped at 25°C for 18min compared to samples chopped at 5°C for 6min. Results indicated both hydrophobic interactions and disulfide bonds were significantly enhanced during gelation...
July 1, 2017: Food Chemistry
https://www.readbyqxmd.com/read/28249036/humpback-whale-super-groups-a-novel-low-latitude-feeding-behaviour-of-southern-hemisphere-humpback-whales-megaptera-novaeangliae-in-the-benguela-upwelling-system
#14
Ken P Findlay, S Mduduzi Seakamela, Michael A Meÿer, Stephen P Kirkman, Jaco Barendse, David E Cade, David Hurwitz, Amy S Kennedy, Pieter G H Kotze, Steven A McCue, Meredith Thornton, O Alejandra Vargas-Fonseca, Christopher G Wilke
Southern Hemisphere humpback whales (Megaptera novaeangliae) generally undertake annual migrations from polar summer feeding grounds to winter calving and nursery grounds in subtropical and tropical coastal waters. Evidence for such migrations arises from seasonality of historic whaling catches by latitude, Discovery and natural mark returns, and results of satellite tagging studies. Feeding is generally believed to be limited to the southern polar region, where Antarctic krill (Euphausia superba) has been identified as the primary prey item...
2017: PloS One
https://www.readbyqxmd.com/read/28243932/total-and-methyl-mercury-in-the-water-sediment-and-fishes-of-vembanad-a-tropical-backwater-system-in-india
#15
E V Ramasamy, K K Jayasooryan, M S Shylesh Chandran, Mahesh Mohan
Mercury contamination in the water bodies of developing countries is a serious concern due to its toxicity, persistence, and bioaccumulation. Vembanad, a tropical backwater lake situated at the southwest coast of India, is the largest Ramsar site in southern India. The lake supports thousands of people directly and indirectly through its resources and ecosystem services. It is highly polluted with toxic pollutants such as heavy metals, as it receives effluent discharges from Kerala's major industrial zone. In the present study, water, pore water, sediment, and fish samples collected from Vembanad Lake were analysed for total mercury (THg) and methyl mercury (MHg) contents...
March 2017: Environmental Monitoring and Assessment
https://www.readbyqxmd.com/read/28231621/the-biogeography-of-tropical-reef-fishes-endemism-and-provinciality-through-time
#16
Peter F Cowman, Valeriano Parravicini, Michel Kulbicki, Sergio R Floeter
The largest marine biodiversity hotspot straddles the Indian and Pacific Oceans, driven by taxa associated with tropical coral reefs. Centred on the Indo-Australian Archipelago (IAA), this biodiversity hotspot forms the 'bullseye' of a steep gradient in species richness from this centre to the periphery of the vast Indo-Pacific region. Complex patterns of endemism, wide-ranging species and assemblage differences have obscured our understanding of the genesis of this biodiversity pattern and its maintenance across two-thirds of the world's oceans...
February 23, 2017: Biological Reviews of the Cambridge Philosophical Society
https://www.readbyqxmd.com/read/28229261/revision-of-neolebouria-gibson-1976-digenea-opecoelidae-with-trilobovarium-n-g-for-species-infecting-tropical-and-subtropical-shallow-water-fishes
#17
Storm B Martin, Scott C Cutmore, Thomas H Cribb
A new opecoelid trematode is reported from fishes of the Lethrinidae, Lutjanidae and Nemipteridae off Lizard Island on the northern Great Barrier Reef, Australia. The new species keys to Neolebouria Gibson, 1976 and shows strong similarity to several species of that genus, but is not consistent with the type-species, N. georgiensis Gibson, 1976, or others known from temperate/polar and/or deep-sea fishes. The new species is also phylogenetically distant from N. lanceolata (Price, 1934) Reimer, 1987, the only representative of the genus for which molecular data are available...
March 2017: Systematic Parasitology
https://www.readbyqxmd.com/read/28228681/discovery-of-a-new-species-of-hermit-crab-of-the-genus-pylopaguropsis-alcock-1905-from-the-caribbean-den-commensal-or-cleaner-crustacea-anomura-paguridae
#18
Rafael Lemaitre
A new secretive, yet brightly colored hermit crab species of the family Paguridae, Pylopaguropsis mollymulleraesp. n., is fully described based on specimens from the reefs of Bonaire, Lesser Antilles, southern Caribbean Sea. Populations of this new species were discovered and photographed in the Bonaire National Marine Park under a large coral ledge, at a depth of 13.7 m, living in crevices known by scuba divers to serve as den to a pair of "flaming reef lobsters" Enoplometopus antillensis, or a "broad banded moray" Channomuraena vittata...
2017: ZooKeys
https://www.readbyqxmd.com/read/28214119/persistent-organic-pollutants-in-the-olifants-river-basin-south-africa-bioaccumulation-and-trophic-transfer-through-a-subtropical-aquatic-food-web
#19
Vera Verhaert, Nadine Newmark, Wendy D'Hollander, Adrian Covaci, Wynand Vlok, Victor Wepener, Abraham Addo-Bediako, Antoinette Jooste, Johannes Teuchies, Ronny Blust, Lieven Bervoets
This study investigates the trophic transfer of persistent organic pollutants (POPs: PCBs, PBDEs, OCPs and PFASs) in the subtropical aquatic ecosystem of the Olifants River Basin (South Africa) by means of trophic magnification factors (TMFs). Relative trophic levels were determined by stable isotope analysis. POP levels in surface water, sediment and biota were low. Only ∑DDTs levels in fish muscle (<LOQ-61ng/g ww) were comparable or higher than values from other temperate and tropical regions. Significant positive relationships between relative trophic level and PCB, DDT and HCH concentrations were observed so trophic levels play an important role in the movement of contaminants through the food web...
May 15, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28214011/widespread-microplastic-ingestion-by-fish-assemblages-in-tropical-estuaries-subjected-to-anthropogenic-pressures
#20
A L Vendel, F Bessa, V E N Alves, A L A Amorim, J Patrício, A R T Palma
Our aim was to quantify microplastic ingestion by fish assemblages in two tropical Brazilian estuaries and to evaluate whether biological and ecological factors influence the ingestion of microplastics by fish species. Of 2233 fish from both estuaries (from 69 species) examined in this study, 9% of the individuals (24 species) had microplastics in their gut contents. Microplastic ingestion occurred irrespective of fish size and functional group. The diet of fish species was analyzed based on prey items identified in the fish's full stomach contents and five feeding guilds were defined...
February 14, 2017: Marine Pollution Bulletin
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