Results 81 to 90 of about 80,313 (241)
Methods in Ecology and Evolution, EarlyView.Abstract Conservation of marine ecosystems can be improved through a better understanding of ecosystem functioning, particularly the cryptic underwater behaviours and interactions of marine predators. Image‐based bio‐logging devices (including images, videos and active acoustic) are increasingly used to monitor wildlife movements, foraging behaviours ...
Marianna Chimienti +14 more
wiley +1 more source
Acoustic telemetry reveals cryptic residency of whale sharks [PDF]
Biology Letters, 2015 Although whale sharks ( Rhincodon typus ) have been documented to move thousands of kilometres, they are most frequently observed at a few predictable seasonal aggregation sites. The absence of sharks at the surface during visual surveys has led to the assumption that sharks disperse to places unknown during the ...
E. Fernando Cagua +6 more
openaire +4 more sources
Frontiers in Marine Science, 2018 Donsol in the Philippines is the longest running community-based whale shark (Rhincodon typus) ecotourism site in Southeast Asia, with peak visitation in 2012 of over 27,000 tourists. In order to understand this aggregation and the importance of the area
Emer McCoy +8 more
doaj +1 more source
Zero‐shot shark tracking and biometrics from aerial imagery
Methods in Ecology and Evolution, EarlyView.Abstract The recent widespread adoption of drones for studying marine animals provides opportunities for deriving biological information from aerial imagery. The large scale of imagery data acquired from drones is well suited for machine learning (ML) analysis.
Chinmay K. Lalgudi +4 more
wiley +1 more source
Ocean‐scale prediction of whale shark distribution
Diversity and Distributions, 2011 AbstractAim Predicting distribution patterns of whale sharks (Rhincodon typus, Smith 1828) in the open ocean remains elusive owing to few pelagic records. We developed multivariate distribution models of seasonally variant whale shark distributions derived from tuna purse‐seine fishery data.
Mark G. Meekan +6 more
openaire +3 more sources
Whale Shark Aggregations in the Northern Gulf of Mexico [PDF]
, 2013 Background: The Northern Gulf of Mexico Whale Shark Research Program was initiated in 2003 to increase our knowledge of whale shark occurrence and distribution within the region. A primary goal was to obtain sightings data from “citizen scientists” to guide directed research.
James S. Franks +4 more
openaire +1 more source
Frontiers in Neuroscience, 2018 The neuropeptide gonadotropin-releasing hormone (GnRH) plays an important role in the control of reproductive functions. Vertebrates possess multiple GnRH forms that are classified into three main groups, namely GnRH1, GnRH2, and GnRH3.
Anne-Laure Gaillard +9 more
doaj +1 more source
Prioritizing future evidence needs for marine and freshwater mammal conservation action
Animal Conservation, EarlyView.To improve conservation practice, decisions should be informed by the available evidence on the effectiveness of conservation actions. Here, we review the comprehensiveness of this evidence base for marine and freshwater mammals. We assess the taxonomic and geographic coverage of the evidence base, identify biases and suggest priorities for future ...
E. Hordern +5 more
wiley +1 more source
The Whale Shark in the Waters Around Ceylon [PDF]
Nature, 1933 FROM time to time since 1862, whale sharks have been reported from the waters around Ceylon. In addition a number of incidental accounts based on erroneous identifications have been published. In the progress of an article on the geographical distribution of this great fish, these references have been looked up and it now seems a good opportunity to ...
openaire +2 more sources
Whale Shark Conservation Hindered by Lack of Habitat Protection
International Journal of Environmental Sciences & Natural Resources, 2020 Within the Gulf of Aden, Djibouti has long been known as a place frequented by whale sharks. Sharks gathering off the Djiboutian coasts are mostly juvenile males and form seasonal aggregations [1].
R. Bettinetti
semanticscholar +1 more source