Diet and food selection in the endemic Hawaiian amphidromous goby, Sicyopterus stimpsoni (Pisces: Gobiidae)

Kido, Michael H.

doi:10.1007/bf00005234

Cited by 29 publications

(26 citation statements)

References 20 publications

(21 reference statements)

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“…However, differences in performance between A2 and A3 are seen in S. stimpsoni that are similar to those in the other species. It is possible that, despite its specialized diet (Kido, 1996a, Julius et al, 2005, S. stimpsoni has retained this pattern as a primitive state from their common ancestor with other gobioids tested. The presence of A2 and A3 performance differences in the eleotrid E. sandwicensis (a member of the outgroup to other gobioids: Thacker, 2003) and the other species we examined is consistent with this possibility.…”

Section: Functional Differentiation Between A2 and A3 In Hawaiian Strmentioning

confidence: 95%

“…Although most Hawaiian stream gobioids have a ventrally positioned mouth, differences in their diets have been associated with morphological differences among these species (Kido, 1996a(Kido, ,b, 1997Julius et al, 2005). For example, Sicyopterus stimpsoni feed by scraping algae from rock surfaces using a highly protru-sible premaxilla equipped with rows of tricuspid teeth (Kido, 1996b;Fitzsimons et al, 2003;Julius et al, 2005).…”

Section: Introductionmentioning

confidence: 96%

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Jaw lever analysis of Hawaiian gobioid stream fishes: A simulation study of morphological diversity and functional performance

Maie¹,

Schoenfuss²,

Blob³

2009

Journal of Morphology

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Differences in feeding behavior and performance among the five native Hawaiian gobioid stream fishes (Sicyopterus stimpsoni, Lentipes concolor, Awaous guamensis, Stenogobius hawaiiensis, and Eleotris sandwicensis) have been proposed based on the skeletal anatomy of their jaws and dietary specialization. However, performance of the feeding apparatus likely depends on the proportions and configurations of the jaw muscles and the arrangement of the jaw skeleton. We used a published mathematical model of muscle function to evaluate potential differences in jaw closing performance and their correlations with morphology among these species. For example, high output force calculated for the adductor mandibulae muscles (A2 and A3) of both A. guamensis and E. sandwicensis matched expectations based on the morphology of these species because these muscles are larger than in the other species. In contrast, Stenogobius hawaiiensis exhibited an alternative morphological strategy for achieving high relative output forces of both A2 and A3, in which the placement and configuration of the muscles conveyed high mechanical advantage despite only moderate cross-sectional areas. These differing anatomical pathways to similar functional performance suggest a pattern of many-to-one mapping of morphology to performance. In addition, a functional differentiation between A2 and A3 was evident for all species, in which A2 was better suited for producing forceful jaw closing and A3 for rapid jaw closing. Thus, the diversity of feeding performance of Hawaiian stream gobies seems to reflect a maintenance of functional breadth through the retention of some primitive traits in combination with novel functional capacities in several species.

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Section: Functional Differentiation Between A2 and A3 In Hawaiian Strmentioning

confidence: 95%

Section: Introductionmentioning

confidence: 96%

Jaw lever analysis of Hawaiian gobioid stream fishes: A simulation study of morphological diversity and functional performance

Maie¹,

Schoenfuss²,

Blob³

2009

Journal of Morphology

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“…Most other studies have focused on the reproductive biology (Ha and Kinzie, 1996;Way et al, 1998;Lindstrom, 1998), distribution (Kinzie, 1988;Higashi and Yamamoto, 1993), evolution (Zink et al, 1996) and feeding habitats (Burky et al, 1993;Kido, 1996aKido, , 1997 of the native amphidromous fish, shrimp and snail. A series of reports by Brasher (1996Brasher ( , 1997a, determined a reduction in stream flow, and thus stream habitat, due to a diversion led to an overlapped distribution of native fauna, in addition to a reduction in the population of native fauna in mid-to upper Hawaiian stream reaches above a dam.…”

Section: Introductionmentioning

confidence: 97%

“…Macroinvertebrate communities are an important component of the Hawaiian stream ecosystems, as a major food source for most native Hawaiian fish species (Kido, 1996a). Reduced stream flow could limit macroinvertebrate habitat, cause shifts in species interactions, eliminate species, and allow introduction of invasive species; therefore, altering the food web of the stream ecosystem (Poff et al, 1997).…”

Section: Introductionmentioning

confidence: 99%

Effects of stream diversion on riffle macroinvertebrate communities in a Maui, Hawaii, stream

McIntosh

Benbow

Burky

2002

River Research & Apps

102

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The continual demand for freshwater by industry (e.g. tourism) and agriculture, a growing population, and increasing development over the past 100 years has resulted in the construction of diversions within many streams of Hawaii. The main objective of this study was to evaluate the impact of stream diversions on riffle macroinvertebrate communities. Benthic macroinvertebrate larval populations were compared above and below a diversion in Iao Stream, Maui, Hawaii, from April to August 2000. During this summer approximately 92-97% of daily stream flow was diverted from Iao Stream. Three taxa, Procanace sp. (Diptera: Canacidae), Atyoida bisulcata (Crustacea: Decapoda), and Amphipoda (Crustacea), were only collected above the diversion. However, the most numerous taxa, Chironomidae (63-64% of the total macroinvertebrate community), Hydroptila arctia (Trichoptera: Hydroptilidae; 15%), and Cheumatopsyche pettiti (Trichoptera: Hydropsychidae; 8%), were found both above and below the diversion. The relative percentage abundance of these dominant taxa remained relatively consistent above and below the diversion over the study period. However, the mean total density of individual dominant taxa was greater above the diversion. The mean total macroinvertebrate density above the diversion was 46% greater than below the diversion (Student t-test: df = 30, t = −3.22, p > 0.01). No correlation was found between temperature and density. A positive correlation was detected between Froude number and mean total macroinvertebrate density. Overall, the reduction in macroinvertebrate diversity and in individual and total density below the diversion suggest that trophic interactions, and thus energy flow, could be affected by reduced flow in Hawaiian streams. The information gained from this study will contribute to knowledge on Hawaiian stream ecosystems, help to create minimum instream flow standards for stream restoration, and will provide information for future freshwater management issues on the Hawaiian islands.

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“…The items utilized to the greatest extent varied among seasons, which suggests the shimofuri goby is an opportunistic generalist rather than a specialist focusing on a particular food type regardless of its abundance. The tendency of shimofuri goby to concentrate on the seasonally most abundant prey is not unusual among gobies, which tend to be opportunistic generalists (e.g., Beumer 1978;Mehner 1992;Kido 1996). Such flexible feeding habits are beneficial in estuaries where environmental conditions are subject to change annually, seasonally, and daily (Grossman et al 1980;Swenson and McCray 1996).…”

Section: Discussionmentioning

confidence: 96%

Invaders eating invaders: exploitation of novel alien prey by the alien shimofuri goby in the San Francisco Estuary, California

Matern

Brown

2005

Biol Invasions

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The shimofuri goby (Tridentiger bifasciatus), which is native to Asian estuaries, was recently introduced to the San Francisco Estuary, California, USA. We conducted gut content analyses to examine the goby's feeding ecology in this highly invaded estuary. Shimofuri gobies were generalist predators on benthic invertebrates, consuming seasonally abundant prey, especially amphipods (Corophium spp.). In addition, shimofuri goby utilized two novel prey items not exploited by other resident fishes -hydroids (Cordylophora caspia) and barnacle (Balanus improvisus) cirri, both of which are alien. The shimofuri goby's feeding ecology appears well-suited to the fluctuating environment of the San Francisco Estuary and may partially explain observed increases in shimofuri goby abundance compared with declines in populations of some native species.

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Diet and food selection in the endemic Hawaiian amphidromous goby, Sicyopterus stimpsoni (Pisces: Gobiidae)

Cited by 29 publications

References 20 publications

Jaw lever analysis of Hawaiian gobioid stream fishes: A simulation study of morphological diversity and functional performance

Jaw lever analysis of Hawaiian gobioid stream fishes: A simulation study of morphological diversity and functional performance

Effects of stream diversion on riffle macroinvertebrate communities in a Maui, Hawaii, stream

Invaders eating invaders: exploitation of novel alien prey by the alien shimofuri goby in the San Francisco Estuary, California

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