Dieta del pez chile lucio <i>Synodus scituliceps</i> (Aulopiformes: Synodontidae) en la Costa Este del Golfo de California, México

This study provides information on feeding habits of the lizardfish Synodus scituliceps, one of the most abundant and frequent species in shrimp by-catch in the demersal area in the eastern coast of the Gulf of California, Mexico. Stomach content analyses were performed on 114 organisms caught from August 2004 to March 2005, and Levin's index was applied. The most important prey species were benthic fishes: Eucinostomus currani, Opisthonema libertate, Synodus lucioceps and Paralichthys californicus. According to the Levin’s index (Bi = 0.39), S. scituliceps is a piscivorous specialist predator in soft bottoms, with similar diet in juveniles and adults.

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Comparison between the feeding habits of spotted eagle ray (Aetobatus narinari) and their potential prey in the southern Gulf of Mexico

Journal of the Marine Biological Association of the United Kingdom ◽

10.1017/s0025315418000450 ◽

2018 ◽

Vol 99 (3) ◽

pp. 661-672 ◽

Cited By ~ 2

Author(s):

F. Serrano-Flores ◽

J.C. Pérez-Jiménez ◽

I. Méndez-Loeza ◽

K. Bassos-Hull ◽

M.J. Ajemian

Keyword(s):

Gulf Of Mexico ◽

Prey Species ◽

Prey Availability ◽

Feeding Habits ◽

Small Scale ◽

Potential Prey ◽

Important Prey ◽

Ecological Aspects ◽

Southern Gulf Of Mexico ◽

Spotted Eagle Ray

In the southern Gulf of Mexico, the spotted eagle ray (Aetobatus narinari) is the second most frequently caught batoid in small-scale fisheries off Campeche. Ecological aspects of this ray are unknown in this region, hampering the understanding of the relationship between its distribution and prey availability in the fishing area. In order to study the feeding habits of this batoid and characterize its potential prey in the study area, stomachs and intestines of 154 specimens (68 females and 86 males) were analysed. The results indicated that A. narinari near Campeche is a specialist and selective predator that feeds mainly on gastropods (92.7% IRI), with no significant differences in the diet found between sexes, size groups, or between stomach and intestine contents. In addition, the results indicated that the most important prey species in the diet were among the most common benthic species in three of the four sampling transects positioned in or adjacent to fishing areas for rays. These most important prey species were Strombus pugilis (53.33% IRI) and Americoliva reticularis (25.6% IRI). Other prey species included Lobatus costatus (5.6% IRI) and Petrochirus diogenes (3.6% IRI). This study suggests that this widely distributed ray species feeds in Campeche's coastal waters and that the study of its potential prey increases the understanding of ecological aspects of the species, which emphasizes the added importance of monitoring fishery impacts on prey species (e.g. the conch fishery off Campeche) to help support integrated assessment and management of fisheries.

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Trophic spectrum of the sailfish Istiophorus platypterus caught off Acapulco in the southern Mexican Pacific

Journal of the Marine Biological Association of the United Kingdom ◽

10.1017/s0025315412001622 ◽

2012 ◽

Vol 93 (4) ◽

pp. 1097-1104 ◽

Cited By ~ 1

Author(s):

Sandra Berenice Hernández-Aguilar ◽

Leonardo Andrés Abitia-Cárdenas ◽

Xchel Gabriel Moreno-Sánchez ◽

Marcial Arellano-Martínez ◽

Eduardo González-Rodríguez

Keyword(s):

Prey Species ◽

Feeding Habits ◽

Coastal Region ◽

Important Species ◽

Mexican Pacific ◽

Istiophorus Platypterus ◽

Important Prey ◽

Males And Females ◽

Index Of Relative Importance ◽

Size Interval

The sailfish Istiophorus platypterus is one of the most common billfish species in the Mexican Pacific. Information about its feeding habits in the coastal region of Acapulco, Guerrero is extremely limited. In the present study we quantified the diet of sailfish, based on captures made from March 2008 to December 2009 by the sport fishing fleet of Acapulco. We analysed a total of 561 stomachs, of which 254 contained food (45%). The size interval of examined specimens was between 101 and 212 cm postorbital length and between 15 and 47 kg total weight. In general, teleosts were the most important prey, followed by cephalopods. According to index of relative importance, the most important species in the diet were the fish Auxis thazard (63.04%) and Fistularia commersonii (6.62%), followed by the cephalopod Octopus spp. (4.58%). There were no significant differences in the diet by sex (males and females), sexual maturity (immature and mature), or by season (warm and cold seasons). In all cases the most important prey species was A. thazard. We conclude that the sailfish I. platypterus off Acapulco behaves as a specialist predator because, despite the consumption of a high number of prey items, it feeds preferentially on a reduced number of prey species that form schools, and are available and abundant in the ocean.

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Feeding habits of the spotted rose snapper, Lutjanus guttatus, (Actinopterygii, Perciformes, Lutjanidae), in the central Gulf of California, BCS, Mexico

Acta Ichthyologica Et Piscatoria ◽

10.3897/aiep.51.63227 ◽

2021 ◽

Vol 51 (1) ◽

pp. 95-105

Author(s):

Filius L. Valle-Lopez ◽

Xchel G. Moreno-Sánchez ◽

Marina S. Irigoyen-Arredondo ◽

Leonardo A. Abitia-Cárdenas ◽

Emigdio Marín-Enríquez ◽

...

Keyword(s):

Gulf Of California ◽

Trophic Ecology ◽

Feeding Habits ◽

Feeding Strategy ◽

Trophic Niche ◽

Trophic Plasticity ◽

Important Prey ◽

Management Measures ◽

Reported Study ◽

Santa Rosalia

The spotted rose snapper, Lutjanus guttatus (Steindachner, 1869), is an important resource for the coastal fisheries of the Gulf of California, mainly due to its high commercial value. Despite this, there are no management measures for this species, owing in part to a lack of information on its basic biology and its trophic ecology in the area. In this context, the presently reported study had as objective to describe the feeding habits of L. guttatus through stomach content analyses, as well as to describe possible changes linked to sex, size, and season. Specimens were caught monthly from June 2016 to September 2017 with gillnets in Santa Rosalía, BCS, Mexico. The abundance, weight, and frequency of occurrence of each prey were assessed, and these parameters were integrated into the index of relative importance (%IRI) to determine the importance of each prey item in the L. guttatus diet. The Levin’s index was used to assess the trophic niche width of the species, the feeding strategy was evaluated using Costello’s graphic method and the trophic level was calculated. Finally, to establish whether there were significant differences in the diet by sex, size, or season a PERMANOVA test was used with a 95% confidence level. A total of 202 L. guttatus stomachs were analyzed, 191 of which contained food. A total of 26 prey items were identified. According to the %IRI, the most important prey were the teleost fishes Harengula thrissina (Jordan et Gilbert, 1882) (45.7%) and Sardinops sagax (Jenyns, 1842) (34.8%), the euphausiid Nyctiphanes simplex (13.4%), and the crustacean Penaeus spp. (5.6%). The PERMANOVA analysis resulted in significant differences between the analyzed categories; however, there were no significant differences in the interactions among the categories. According to Levin’s index, L. guttatus had a narrow trophic width, with changes in the main prey consumed by the different categories. According to our results, L. guttatus can be considered a benthopelagic opportunistic carnivorous predator with a narrow trophic niche, presenting mostly quantitative variations in its diet according to sex, size, and season. Its trophic plasticity allows it to take advantage of the most available and abundant food resources.

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Feeding habits of the bullet tuna Auxis rochei in the southern Tyrrhenian Sea

Journal of the Marine Biological Association of the United Kingdom ◽

10.1017/s0025315407055440 ◽

2007 ◽

Vol 87 (4) ◽

pp. 1007-1012 ◽

Cited By ~ 13

Author(s):

E. Mostarda ◽

D. Campo ◽

L. Castriota ◽

V. Esposito ◽

M.P. Scarabello ◽

...

Keyword(s):

Diet Composition ◽

Fish Larvae ◽

Feeding Habits ◽

Stomach Contents ◽

Hierarchical Cluster ◽

Eastern Coast ◽

Tyrrhenian Sea ◽

Monthly Basis ◽

The North ◽

Important Prey

A total of 235 bullet tunas (Auxis rochei) was caught off the north-eastern coast of Sicily between March 2003 and March 2004 for the purpose of studying their feeding habits. The fish were caught by means of an experimental surface gill-net during fishing surveys carried out on a monthly basis. The stomach contents were analysed and the prey identified, counted and weighed. The importance of the different prey types was assessed utilizing several feeding indices while possible size-related changes of the diet composition were highlighted by means of hierarchical cluster analysis, nMDS and SIMPER analysis. The results of this study showed that the bullet tuna is an epipelagic off-shore predator feeding on whatever abundant resource is available in the environment with a preference for planktonic crustaceans, small cephalopods and fish larvae. Among crustaceans, hyperiidean amphipods were the most important prey, with Anchylomera blossevillei as the dominant species, followed by the euphausiacean Stylocheiron maximum. Among cephalopods, Heteroteuthis dispar was recorded frequently while fish larvae showed high values of all indices. All prey were pelagic organisms. A size-related change in the diet composition was observed, even if it seemed related to the temporal fluctuations of the zooplanktonic assemblage in the environment. The average prey weight per stomach increased significantly in the larger predators which mostly fed on fish larvae belonging to several commercially important demersal and pelagic species.

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Diet and prey selection dynamics of Cancer polyodon in three different habitat types in Tongoy Bay, Chile

Journal of the Marine Biological Association of the United Kingdom ◽

10.1017/s0025315404009865h ◽

2004 ◽

Vol 84 (4) ◽

pp. 751-756 ◽

Cited By ~ 11

Author(s):

Rafael I. León ◽

Wolfgang B. Stotz

Keyword(s):

Prey Species ◽

Prey Availability ◽

Prey Selection ◽

Feeding Habits ◽

Habitat Types ◽

Important Prey ◽

Selection Dynamics ◽

Argopecten Purpuratus ◽

Sea Grass ◽

Main Factors

Feeding dynamics of Cancer polyodon was studied, by comparing the diets of three size-classes of the crab to environmental abundance of prey species in three habitats in Tongoy Bay, Chile (30°S). In the sea grass and sand–gravel habitats cannibalism was observed, the small C. polydon being actively selected as the main prey in spite of their lower abundance compared with other crustaceans. In the mud habitat the scallop Argopecten purpuratus was the most important prey, being actively selected although occurring at low relative abundance. Cancer polyodon showed plasticity in feeding habits, adapting to differential prey availability, but always selecting certain species independently of their abundance in each habitat. Accessibility, more than the abundance of the prey, seem to be the main factors influencing prey selection.

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Feeding Habits of Northeast Atlantic Harp Seals (Phoca groenlandica) along the Summer Ice Edge of the Barents Sea

Canadian Journal of Fisheries and Aquatic Sciences ◽

10.1139/f91-257 ◽

1991 ◽

Vol 48 (11) ◽

pp. 2180-2183 ◽

Cited By ~ 29

Author(s):

Christian Lydersen ◽

Lars Anker Angantyr ◽

Øystein Wiig ◽

Torger Øritsland

Keyword(s):

Barents Sea ◽

Feeding Habits ◽

Boreogadus Saida ◽

Greenland Halibut ◽

Important Prey ◽

Phoca Groenlandica ◽

The Barents Sea ◽

Benthic Fishes

Stomachs from 58 harp seals (Phoca groenlandica) from the northern part of the Barents Sea were collected between August 20 and September 5, 1987. Fifty-six of the stomachs contained identifiable remains. The amphipod Parathemisto libellula was the most common food item, found in 98% of the seal stomachs and constituting 57.9% of the total volume. Fish were the second most important prey group, with Arctic cod (Boreogadus saida) as the dominant species followed by Nybelin's sculpin (Triglops nybelini) and Greenland halibut (Reinhardtius hippoglossoides). Decapods, mainly Pandalus borealis, were also common as prey of harp seals. No sex- or age-related differences in choice of food were found. From knowledge of the depths at locations where seals were collected and the presence of fresh benthic fishes in the seal stomachs, it is assumed that harp seals could forage at depths below 300 m.

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Feeding habits of oriental sole (Brachirus orientalis) on the Bushehr coast of the Persian Gulf

Fisheries & Aquatic Life ◽

10.2478/aopf-2020-0021 ◽

2020 ◽

Vol 28 (3) ◽

pp. 175-185

Author(s):

Dima Alghada ◽

Yazdan Keivany ◽

Fatemeh Paykan-Heyrati

Keyword(s):

Coastal Waters ◽

Persian Gulf ◽

Diet Composition ◽

Prey Species ◽

Feeding Habits ◽

Male And Female ◽

Important Prey ◽

Males And Females ◽

The Persian Gulf ◽

Prey Items

AbstractThe feeding habits of oriental sole, Brachirus orientalis (Bloch & Schneider) were investigated using 300 male and female specimens collected from coastal waters of Bushehr Province (Persian Gulf) between June 2015 and July 2016. The total length of females and males ranged from 16.2 to 38.5 cm and 14.1 to 29.1 cm, respectively. Of the total number of stomachs examined, 225 were empty (vacuity index = 77%). This index varied significantly over the year (P < 0.05), with maximum values in April and September and minimum in October and May. The B. orientalis diet was composed of nine prey species belonging to five classes. The most important prey items were Crustacea and Mollusca (Bivalvia and Gastropoda). Diet composition showed little seasonal variation, and Crustacea, Bivalvia, and Gastropoda were the most important prey items in all seasons. Sex did not appear to have any significant effects on dietary composition, and the main prey items were consumed by both males and females (P > 0.05).

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Diet

10.1093/oso/9780198712145.003.0003 ◽

2017 ◽

Author(s):

M.G.L. Mills ◽

M.E.J. Mills

Keyword(s):

Prey Species ◽

Radio Tracking ◽

Relative Occurrence ◽

Important Prey ◽

Individual Prey ◽

Sibling Groups

Four methods were used to document the diet of cheetahs: incidental observations, radio tracking, tracking, spoor, and continuous follows. A combination of continuous follows and tracking spoor gave the best results. Steenbok were the most frequently killed species, but they did not dominate the diet in the same way as Thomson’s gazelle do in the Serengeti. Coalition males have a different diet profile from single males, single females, females with cubs, and sibling groups. For all but single males, the relative occurrence of prey species in the diet reflected its dietary importance in terms of kilograms of meat obtained. Gemsbok calves and adult ostrich were important prey for coalition males and springhares were important for single males. Three individual prey specializations for females were found; namely springbok specialists, steenbok/duiker specialists, and intermediates. Contrary to an earlier study, springbok were not found to be the most important prey species.

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Prey consumed by Guiana dolphin Sotalia guianensis (Cetacea, Delphinidae) and franciscana dolphin Pontoporia blainvillei (Cetacea, Pontoporiidae) in an estuarine environment in southern Brazil

Iheringia Série Zoologia ◽

10.1590/s0073-47212012000200003 ◽

2012 ◽

Vol 102 (2) ◽

pp. 131-137 ◽

Cited By ~ 20

Author(s):

Marta J. Cremer ◽

Pedro C. Pinheiro ◽

Paulo C. Simões-Lopes

Keyword(s):

Prey Species ◽

Stomach Contents ◽

Frequency Of Occurrence ◽

Teleost Fishes ◽

Southern Brazil ◽

Sympatric Populations ◽

Sotalia Guianensis ◽

Important Prey ◽

Pontoporia Blainvillei ◽

Lolliguncula Brevis

The present study provides information about the diet of sympatric populations of small cetaceans in the Babitonga Bay estuary. This is the first study on the diet of these species in direct sympatry. The stomach contents of seven Guiana dolphins Sotalia guianensis and eight franciscanas Pontoporia blainvillei were analyzed. The prey of both cetaceans was mostly teleost fishes, followed by cephalopods. We identified 13 teleost fishes as part of the diet of the franciscanas, and 20 as part of the diet of Guiana dolphins. Lolliguncula brevis was the only cephalopod recorded, and was the most important prey for both cetaceans. Stellifer rastrifer and Gobionellus oceanicus were also important for franciscana, so as Mugil curema and Micropogonias furnieri were important for Guiana dolphins. Stellifer rastrifer and Cetengraulis edentulus were the fishes with the highest frequency of occurrence for franciscana (50%), while Achirus lineatus, C. edentulus, S. brasiliensis, Cynoscion leiarchus, M. furnieri, M. curema, Diapterus rhombeus, Eugerres brasilianus and G. oceanicus showed 28.6% of frequency of occurrence for Guiana dolphins. Franciscanas captured greater cephalopods than the Guiana dolphins in both total length (z= -3.38; n= 40; p< 0.05) and biomass (z = -2.46; n = 40; p<0.05). All of the prey species identified occur inside the estuary, which represents a safe habitat against predators and food availability, reinforcing the importance of the Babitonga Bay for these cetacean populations.

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