Activity, habitat utilization, feeding behaviour, and diet of the sand moray Gymnothorax ocellatus (Anguilliformes, Muraenidae) in the south western Atlantic

Santos, Flávia Borges; Castro, Ricardo Macedo Corrêa e

doi:10.1590/s1676-06032003000100003

Cited by 23 publications

(13 citation statements)

References 13 publications

(24 reference statements)

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“…Both species have a higher activity pattern during the night. During the day, T. lepturus remains close to the sea bottom, resting (Martins & Haimovici 1997;Froese & Pauly 2017), while G. ocellatus remains buried in the sand or muddy bottom with only the head above the sea bottom (Santos & Castro 2003). Prey behaviour likely influences catfish catch strategies during the day, reducing the chances of agonistic behaviour among prey during predation.…”

Section: Resultsmentioning

confidence: 99%

Feeding habits and behaviour of Bagre bagre and Genidens barbus, two ariid catfishes (Pisces: Siluriformes) from southeastern Brazil

Tavares

Beneditto

2017

J. Threat. Taxa

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C omm u n fi c a tt fi o n F e e d fi n g h a b fi tt s a n d b e h a v fi o u r o f B a g r e b a g r e a n d G e n fi d e n s b a r b u s , ttw o a r fi fi d c a tt f fi s h e s ( P fi s c e s : S fi l u r fi f o rm e s ) f r om s o u tt h e a s tt e r n B r a z fi l M a r fi a T h e r e z a M a n h ã e s T a v a r e s & A n a P a u l a M a d e fi r a D fi B e n e d fi tt o 2 6 O c tt o b e r 2 0 1 7 | V o l . 9 | N o . 1 0 | P p . 1 0 7 7 1 -1 0 7 7 5 1 0 . 1 1 6 0 9 / j o tt . 3 7 5 8 . 9 . 1 0 . 1 0 7 7 1 -1 0 7 7 5 T h r e a tt e n e d T a x a T h e J o u r n a l o f T h r e a tt e n e d T a x a fi s d e d fi c a tt e d tt o b u fi l d fi n g e v fi d e n c e f o r c o n s e r v a fi o n g l o b a l l y b y p u b l fi s h fi n g p e e r -r e v fi ew e d a r fi c l e s o n l fi n e e v e r y m o n tt h a tt a r e a s o n a b l y r a p fi d r a tt e a tt www . tt h r e a tt e n e d tt a x a . o r g. A l l a r fi c l e s p u b l fi s h e d fi n J o T T a r e r e g fi s tt e r e d u n d e r C r e a fi v e C omm o n s A tt r fi b u fi o n 4 . 0 I n tt e r n a fi o n a l L fi c e n s e u n l e s s o tt h e rw fi s e m e n fi o n e d . J o T T a l l ow s u n r e s tt r fi c tt e d u s e o f a r fi c l e s fi n a n y m e d fi um , r e p r o d u c fi o n , a n d d fi s tt r fi b u fi o n b y p r o v fi d fi n g a d e q u a tt e c r e d fi tt tt o tt h e a u tt h o r s a n d tt h e s o u r c e o f p u b l fi c a fi o n .O P E N A C C E S S P a r tt n e r www . tt h r e a tt e n e d tt a x a . o r g I S S N 0 9 7 4 -7 9 0 7 ( O n l fi n e ) | I S S N 0 9 7 4 -7 8 9 3 ( P r fi n tt ) B u fi l d fi n g e v fi d e n c e f o r c o n s e r v a fi o n g l o b a l l y J o u r n a l o f T h r e a tt e n e d T a x a P u b l fi s h e r / H o s tt F o r F o c u s , S c o p e , A fim s , P o l fi c fi e s a n d G u fi d e l fi n e s v fi s fi tt h tt p : / / tt h r e a tt e n e d tt a x a . o r g / A b o u tt _ J o T T F o r A r fi c l e S u bm fi s s fi o n G u fi d e l fi n e s v fi s fi tt h tt p : / / tt h r e a tt e n e d tt a x a . o r g / S u bm fi s s fi o n _ G u fi d e l fi n e s F o r P o l fi c fi e s a g a fi n s tt S c fi e n fi fi c M fi s c o n d u c tt v fi s fi tt h tt p : / / tt h r e a tt e n e d tt a x a . o r g / J o T T _ P o l fi c y _ a g a fi n s tt _ S c fi e n fi fi c _M fi s c o n d u c tt F o r r e p r fi n tt s c o n tt a c tt < fi n f o@ tt h r e a tt e n e d tt a x a . o r g > Author Contribution: MTMT analysed the stomach contents of the catfishes and identified their prey items. APMDB organized the data from the stomach contents to elaborate this article. Acknowledgements:We are indebted to Silvana Ribeiro Gomes for helping with the catfishes sampling. (Linnaeus, 1766) and Genidens barbus (Lacepède, 1803), both targets of commercial fisheries in coastal southeastern Brazil, were evaluated through stomach content analysis. These catfish are generalistic benthophagous feeders and daytime consumers, and the analysis points to fish and crustaceans as their primary prey. The fish Trichiurus leptu...

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Section: Resultsmentioning

confidence: 99%

Feeding habits and behaviour of Bagre bagre and Genidens barbus, two ariid catfishes (Pisces: Siluriformes) from southeastern Brazil

Tavares

Beneditto

2017

J. Threat. Taxa

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“…These changes are likely associated with species habitat use and morphological changes. As grunts are important both as predators and prey to other reef species Santos and Castro 2003;Muñoz et al 2011), they play an important trophic role as a key species in the Atlantic Ocean marine ecosystem. Further work is still needed to understand the ontogenetic shifts in their habitat use, migration, and ecomorphology.…”

Section: Discussionmentioning

confidence: 99%

Ontogenetic diet changes and food partitioning of Haemulon spp. coral reef fishes, with a review of the genus diet

Pereira

Barros

Zemoi

et al. 2014

Rev Fish Biol Fisheries

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The genus Haemulon contains some of the most abundant and ecologically important reef fishes in the South Atlantic Ocean. However, their life history attributes have not been widely studied. Knowledge of ontogenetic changes in their resource use is critical to understanding the processes structuring natural communities. The present study analysed ontogenetic diet changes and food partitioning in Haemulon spp. We collected stomach contents from 276 individuals of four different size classes from four sympatric species (H. aurolineatum, H. parra, H. plumieri and H. squamipinna). There was a significant difference in the proportions of prey types between both species and size classes, providing evidence of food partitioning. Moreover, the Bray-Curtis similarity index revealed two distinct groups. The first consisted of larger-sized fish that consumed larger food items and the second group consisted of smaller individuals that fed on small invertebrates. There was an abrupt shift in the diet of Haemulon spp. at around 10.0 cm total length, a size that corresponds with the greatest morphological changes in the genus. Additionally, the diet overlap calculated by Pianka's index was more evident in smaller and larger size classes than in intermediate individuals. Together, these observations suggest Haemulon species undergo ontogenetic diet changes and food partitioning within species and size classes that are associated with changes in their habitat use, alongside morphological changes. Further research is needed to determine their ecomorphology and the competitive mechanisms that allow the coexistence of several sympatric and ecologically similar species of the genus Haemulon.

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“…Jellyman & Sykes 2003;Pusey et al 2004), marine muraenids have been found to engage in nocturnal, diurnal or no distinct diel periodicity in activity (Hiatt & Strasburg 1960;Abrams et al 1983;Santos & Castro 2003). Habitat use examined here was confined to daylight hours, when G. polyuranodon were typically stationary and rarely seen foraging in the open.…”

Section: Discussionmentioning

confidence: 99%

Distinct habitat selection by freshwater morays in tropical rainforest streams

Ebner

Fulton

Donaldson

et al. 2015

Ecology of Freshwater Fish

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Morays occupy unique interstitial habitats and function as key predators in marine ecosystems. Conversely, there is limited understanding of the ecology of Gymnothorax polyuranodon, the lone representative of the family Muraenidae known to reside in freshwater systems. In this study, we used field-based encounters over a 3-year period in three short-steep-coastal-streams of the Australian Wet Tropics to find that most G. polyuranodon individuals (74%) occupied pools, with very few individuals observed in run (23%) or riffle (3%) mesohabitats. Moreover, G. polyuranodon positively selected microhabitats of slow flow (<0.05 ms À1 ) and deep water (>80 cm), while avoiding high flows (>0.5 ms À1 ) and shallow water (<40 cm depth). Morays exhibited strong preferences for boulders (73% of the immediate stream bed area occupied relative to 36% availability) with most individuals resting directly underneath large or very large boulders. Collecting and compiling records of this rare and elusive species over the long-term helped to reveal such habitat specialisation. Future management plans for G. polyuranodon should focus on preserving boulder interstices year-round and maintaining stream-sea connectivity to facilitate a diadromous life cycle.

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Activity, habitat utilization, feeding behaviour, and diet of the sand moray Gymnothorax ocellatus (Anguilliformes, Muraenidae) in the south western Atlantic

Cited by 23 publications

References 13 publications

<b>Feeding habits and behaviour of <I>Bagre bagre</I> and <I>Genidens barbus</I>, two ariid catfishes (Pisces: Siluriformes) from southeastern Brazil</b>

<b>Feeding habits and behaviour of <I>Bagre bagre</I> and <I>Genidens barbus</I>, two ariid catfishes (Pisces: Siluriformes) from southeastern Brazil</b>

Ontogenetic diet changes and food partitioning of Haemulon spp. coral reef fishes, with a review of the genus diet

Distinct habitat selection by freshwater morays in tropical rainforest streams

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