2008
DOI: 10.1590/s1679-62252008000400012
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Assessing diet composition of seahorses in the wild using a non destructive method: Hippocampus reidi (Teleostei: Syngnathidae) as a study-case

Abstract: This paper presents the results of the first analysis of the natural diet of Hippocampus reidi, one of the most sought after seahorse species in the international aquarium trade. Its main goals were to investigate food items and prey categories consumed by the species, and to discuss feeding strategy and inter and intra-individual components of niche breadth. Data were gathered from October 2005 to September 2006 at the Mamanguape estuary, State of Paraíba, NE Brazil. Food items from seahorses anaesthetized wi… Show more

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Cited by 46 publications
(40 citation statements)
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“…There is a well-preserved mangrove in the area, composed of Avicennia germinans, Avicennia schaweriana, Conocarpus erectus, Laguncularia racemosa and Rhizophora mangle, which grows around the primary channel and tidal creek and extends to 600 ha, in addition to Atlantic Forest remnants (ROCHA et al 2008). Endangered species, such as the seahorse, Hippocampus reidi, and the West Indian manatee, Trichechus manatus, are also found in this estuary NORDI, 2003, CASTRO et al, 2008.…”
Section: Study Areamentioning
confidence: 99%
“…There is a well-preserved mangrove in the area, composed of Avicennia germinans, Avicennia schaweriana, Conocarpus erectus, Laguncularia racemosa and Rhizophora mangle, which grows around the primary channel and tidal creek and extends to 600 ha, in addition to Atlantic Forest remnants (ROCHA et al 2008). Endangered species, such as the seahorse, Hippocampus reidi, and the West Indian manatee, Trichechus manatus, are also found in this estuary NORDI, 2003, CASTRO et al, 2008.…”
Section: Study Areamentioning
confidence: 99%
“…(daily intense tidal depth variations in the estuary)2681Yes [2] Occurrence determinant1Determined by the presence of mangrove roots as anchoring points and shelter32100Yes [30] Exposition to water currents2Preferentially inhabit backwater areas protected from strong currents3197Yes [3, 30] Salinity1In the mangrove, are abundant in sites with high salinity levels32100Yes [3, 35] Water transparency1Abundant in high transparency level conditions32100No data Seasonal abundance2Abundant in summer (dry season), scarce in winter (wet season).3197Yes [3] Migration period2Rainy season, in winter (May to September)32100Yes [3] Reason for migration2To avoid low salinity levels caused by the rainy season’s freshwater input. Also are removed out of the mangrove to the sea by floods and currents32100Yes [3] Anchoring points6Mangrove roots32100Yes [30, 33, 44]Trophic ecology Diet7Shrimp larvae32100Yes [3, 37, 38]Fish larvae2578 Feeding behavior4Sucks the prey3197Yes [2, 36] Predators10Crabs and fishes32100Yes [3, 40, 44] Is camouflage related to color shift?2Yes. Is capable of changing its own color3094Yes [24]Reproduction Sexual dimorphism1Brooding pou...…”
Section: Discussionmentioning
confidence: 99%
“…Seahorses are indeed generalists and voracious ambush predators, feeding on live moving preys [2, 36], from zooplankton to small fishes, especially microcrustaceans [37, 38]. The “mud worms” quoted by jangadeiros are possibly nematodes, polychaetes and oligochaetes.…”
Section: Discussionmentioning
confidence: 99%
“…There is a well-preserved mangrove swamp in the area, composed of Avicennia germinans, Avicennia schaweriana, Conocarpus erectus, Laguncularia racemosa and Rhizophora mangle, which extends for 600 ha around the primary channel and tidal creek, in addition to Atlantic Forest remnants (ROCHA et al, 2008). Endangered species, such as the seahorse, Hippocampus reidi, and the West Indian manatee, Trichechus manatus, are also found in this estuary NORDI, 2003;CASTRO et al, 2008).…”
Section: Study Areamentioning
confidence: 99%