Results 21 to 30 of about 478 (207)

Colour vision in billfish

open access: yesPhilosophical Transactions of the Royal Society of London. Series B: Biological Sciences, 2000
Members of the billfish family are highly visual predatory teleosts inhabiting the open ocean. Little is known about their visual abilities in detail, but past studies have indicated that these fishes were likely to be monochromats. This study, however, presents evidence of two anatomically distinct cone types in billfish.
Fritsches, Kerstin A.   +3 more
openaire   +6 more sources

BILLFISH CATCHES FROM OCEANIC RECREATIONAL FISHING IN THE ROYAL CHARLOTTE BANK, BAHIA, BRAZIL

open access: yesBoletim do Instituto de Pesca, 2021
The aim of this study was to analyze the oceanic recreational fishing in the Royal Charlotte Bank, state of Bahia, Brazil. Only data from an oceanic recreational fishing operator based in the municipality of Canavieiras, southern Bahia, were used, from ...
Camila PRIMITIVO   +2 more
doaj   +3 more sources

Biogeography of tuna and billfish communities [PDF]

open access: yesJournal of Biogeography, 2011
AbstractAim  The aims of this study were: (1) to identify global communities of tuna and billfish species through quantitative statistical analyses of global fisheries data; (2) to describe the spatial distribution, main environmental drivers and species composition of each community detected; and (3) to determine whether the spatial distribution of ...
Reygondeau, Gabriel   +5 more
openaire   +2 more sources

Dispersal of adult black marlin (Istiompax indica) from a Great Barrier Reef spawning aggregation. [PDF]

open access: yesPLoS ONE, 2012
The black marlin (Istiompax indica) is one of the largest bony fishes in the world with females capable of reaching a mass of over 700 kg. This highly migratory predator occurs in the tropical regions of the Pacific and Indian Oceans, and is the target ...
Michael L Domeier, Peter Speare
doaj   +1 more source

Loancorhynchus catrillancai gen. et sp. nov., a new swordfish (Xiphioidei, Blochiidae) from the Middle Eocene of central Chile [PDF]

open access: yesPeerJ, 2019
This contribution describes the skull remains of a swordfish (Perciformes, Xiphioidei), recovered from Middle Eocene beds of central Chile. Comparison with known fossil and extant xiphioids reveals derived traits only present in the Neogene swordfish ...
Rodrigo A. Otero
doaj   +2 more sources

Choice experiments on land managers' participation in environmental programs: A systematic review and meta‐analysis of estimate validity

open access: yesAmerican Journal of Agricultural Economics, EarlyView.
Abstract Discrete choice experiments are increasingly being used to estimate land managers' willingness to accept participation in incentive‐based environmental programs. This is a specific application of discrete choice experiments: the estimation of willingness to accept for a private good (program participation) where respondents have to make trade ...
Anastasio J. Villanueva   +2 more
wiley   +1 more source

From reels to research: Motivations and concerns of billfish citizen science participants

open access: yesPeople and Nature
Citizen science facilitates cost‐effective ecological data collection at much larger scales than would otherwise be feasible. This is particularly useful for the study of highly migratory species with broad distributions, such as billfishes. Participants
Laura M. Smith   +6 more
doaj   +1 more source

Composition of pelagic fish in commercial landings of the longline fishery in the Costa Rica Pacific during 2015-2021

open access: yesFrontiers in Marine Science
Longline fishing in the Pacific of Costa Rica targets multiple species of large pelagic fishes and faces challenges in assessment due to lack of data.
Allison Centeno-Chaves   +5 more
doaj   +1 more source

Re-examining mortality sources and population trends in a declining seabird: using Bayesian methods to incorporate existing information and new data. [PDF]

open access: yesPLoS ONE, 2013
The population of flesh-footed shearwaters (Puffinus carneipes) breeding on Lord Howe Island was shown to be declining from the 1970's to the early 2000's.
Tim Reid   +3 more
doaj   +1 more source

Video‐Assisted Intralesional Curettage for Invasive Nonmalignant Giant Cell Tumors

open access: yesArthroscopy Techniques, EarlyView.
Abstract Giant cell tumor of bone is a locally aggressive benign neoplasm with a strong tendency for local recurrence after surgical treatment. Intralesional excision and curettage is preferred in most cases to maximize tumor removal while preserving the affected joint.
George Loria   +5 more
wiley   +1 more source

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