Comparative Feeding Ecology of Two Sympatric Greenling Species, Hexagrammos otakii and Hexagrammos agrammus in Eelgrass Zostera marina Beds

Kwak, Seok Nam; Baeck, Gun Wook; Klumpp, David

doi:10.1007/s10641-005-7429-1

Cited by 42 publications

(26 citation statements)

References 11 publications

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“…The existence of similar diet composition also does not necessarily cause interspecific competition (Cabral et al 2002), as each species uses a different microhabitat and generally consumes the most abundant prey. However, comparative feeding habits can provide information on potential conflicts over food resources (Kwak et al 2005), because to some degree the habitat ranges and prey items overlapped.…”

Section: Discussionmentioning

confidence: 99%

Feeding ecology of three tonguefishes, genus Cynoglossus (Cynoglossidae) in the Seto Inland Sea, Japan

Baeck

Park

Hashimoto

2011

Animal Cells and Systems

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Feeding ecology was compared among the three tonguefishes Cynoglossus abbreviatus, C. joyneri and C. robustus, collected from Seto Inland Sea, Japan, from June 2000 to May 2001. They are benthivores, consuming mainly gammarid amphipods, shrimps, crabs, gastropods, bivalves and ophiuroids. C. abbreviatus consumed greater proportions of ophiuroids whereas C. joyneri and C. robustus ate more amphipods and shrimps. While C. abbreviatus consumed mostly ophiuroids in all size classes, the diets of C. joyneri and C. robustus showed ontogenetic changes in feeding habits; smaller individuals of C. joyneri and C. robustus consumed gammarid amphipods, whereas larger C. joyneri ate shrimps and gastropods, and larger C. robustus fed mainly on gastropods, crabs, bivalves and polychaetes. Cluster analysis based on diet similarities emphasized that the three Cynoglossus species could be categorized on a size-related basis into three feeding groups: smaller C. joyneri and C. rubustus ( B25 cm TL) could be classified as group A, and the larger of them (!25 cm TL) as group B, whereas C. abbreviatus was categorized as group C. This means that some degree of resource partitioning can occur among the three Cynoglossus species. The seasonal changes in the diets were also significant for the three Cynoglossus species.

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Section: Discussionmentioning

confidence: 99%

Feeding ecology of three tonguefishes, genus Cynoglossus (Cynoglossidae) in the Seto Inland Sea, Japan

Baeck

Park

Hashimoto

2011

Animal Cells and Systems

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“…Caprellids living on seagrass are important prey for many Wshes (Caine 1991;Horinouchi et al 1998;Rodrí-guez-Ruiz et al 2001;Sánchez-Jerez et al 2000). Some species of Wshes associated with seagrass meadows consume primarily caprellids, especially during juvenile stages (see Kwak et al 2005). In fact, in shallow water ecosystems, caprellidean and gammaridean amphipods are considered to be one of the most important prey items for Wshes, especially for those less than 10 cm in body length (Takeuchi and Hino 1997).…”

Section: Caprellid Community On Andalusian Seagrassesmentioning

confidence: 99%

Community structure of caprellids (Crustacea: Amphipoda: Caprellidae) on seagrasses from southern Spain

et al. 2008

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The community structure of caprellids inhabiting two species of seagrass (Cymodocea nodosa and Zostera marina) was investigated on the Andalusian coast, southern Spain, using uni and multivariate analyses. Three meadows were selected (Almería, AL; Málaga, MA; Cádiz, CA), and changes in seagrass cover and biomass were measured from 2004 to 2005. Four caprellid species were found; the density of Caprella acanthifera, Phtisica marina and Pseudoprotella phasma was correlated to seagrass biomass. No such correlation was found for Pariambus typicus, probably because this species inhabits sediments and does not cling to the seagrass leaves. We recorded a signiWcant decrease in seagrass cover and biomass in MA due to illegal bottom trawling Wsheries. Phtisica marina and P. typicus were favoured by this perturbation and increased their densities after the trawling activities. A survey of reports on caprellids in seagrass meadows around the world showed no clear latitudinal patterns in caprellid densities (ranging from 6 to 1,000 ind/m 2 per meadow) and species diversity. While caprellid abundances in seagrass meadows are often very high, the number of species per meadow is low (range 1-5).

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“…The male fertilizes and takes care of the eggs until hatching (Munehara et al 2000). Several studies have been carried out regarding the morphology, systematics and ecology of the species (Kanamoto 1979;Huh and Kwak, 1997;Crow et al 2004;Kwak et al 2005;Kimura et al 2007). However, studies on the genetic diversity and population structure of H. agrammus have not been conducted yet.…”

Section: Introductionmentioning

confidence: 99%

Population panmixia and the Pleistocene demographic expansion of spotty belly greenling Hexagrammos agrammus in the East Sea and Northwest Pacific

et al. 2015

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 The population genetic structure and historical demography of spotty belly greenling, Hexagrammos agrammus, which has limited distribution in the Northwest Pacific, was assessed with partial sequences of the mitochondrial DNA (mtDNA) cytochrome b and the control region (D-loop). A total of 103 individuals were collected from four sites located at the Korea Strait (Southern coast of Korea) and the East coast of Korea and two places in the Pacific coast of Japan. For all the populations, nucleotide diversities were low (0.006 -0.009) while the haplotype diversities were as high as 0.92 to 0.97, indicating that the fish has undergone a recent population expansion after experiencing bottleneck. Star-shaped patterns of haplotype networks as well as the significant negative values of Tajima's D and Fu's F S corroborate the recent population expansion. Mismatch distribution analysis reveals that the demographic expansion of the species started during the 2 nd half of the Middle Pleistocene Series approximately 141,000 -406,000 years ago. Hierarchical analysis of molecular variance (AMOVA), the pairwise population statistics (F ST ), and the exact test of haplotype differentiation demonstrate no significant genetic differentiation among populations investigated, suggesting that spotty belly greenling is panmictic in the East Sea and the Pacific coast of Japan.

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Comparative Feeding Ecology of Two Sympatric Greenling Species, Hexagrammos otakii and Hexagrammos agrammus in Eelgrass Zostera marina Beds

Cited by 42 publications

References 11 publications

Feeding ecology of three tonguefishes, genus Cynoglossus (Cynoglossidae) in the Seto Inland Sea, Japan

Feeding ecology of three tonguefishes, genus Cynoglossus (Cynoglossidae) in the Seto Inland Sea, Japan

Community structure of caprellids (Crustacea: Amphipoda: Caprellidae) on seagrasses from southern Spain

Population panmixia and the Pleistocene demographic expansion of spotty belly greenling Hexagrammos agrammus in the East Sea and Northwest Pacific

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