Distribution of the oceanic insects <i>Halobates</i> (Hemiptera: Gerridae) off the south coast of Japan

Ikawa, Terumi; Okabe, Hidehiko; Hoshizaki, Sugihiko; Kamikado, Takahiro; Cheng, Lanna

doi:10.1111/j.1479-8298.2004.00083.x

Cited by 11 publications

(9 citation statements)

References 8 publications

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“…In terms of density (abundance of individuals per square kilometer), the values in this study are comparable to abundances of H. germanus reported in the Pacific Ocean (11,688) , Western Pacific Ocean (4,100), East China Sea (12,000) (Ikawa et al, 2004), Banda Sea (15,000) (Cheng et al, 1990), and in the Red Sea (22,500) (Cheng and Holdway, 1983). The average number of individuals caught per tow during this study was 4.3 ± 1.6 (5.1 ± 1.7 considering only the positive tows).…”

Section: Distribution and Abundancesupporting

confidence: 87%

“…Most of the 47 species of Halobates that have been described so far are often associated with mangrove ecosystem and many are endemic to specific islands or island groups (Andersen and Cheng, 2004). The different oceanic species seldom co-occur, and areas of high density rarely overlap (Cheng and Shulenberger, 1976;Ikawa et al, 2004). Typically, only one Halobates species is dominant in any particular area and boundaries between ranges are often sharply delineated (Ikawa et al, 2012).…”

Section: Introductionmentioning

confidence: 99%

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Distribution and Characteristics of Halobates germanus Population in the Red Sea

2019

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We investigated the occurrence of the sea skater Halobates spp. from samples collected at a fixed time series station and from six cruises along the north-south extend of the Red Sea during 2016-2018. Halobates germanus White, 1883 was the only species found during our study, its distribution ranging between 17 • 9 N and 27 • 27 N and between 35 • 67 E and 41 • 49 E. Total H. germanus abundance ranged between zero to 158,610 individuals km −2 with a considerable temporal (at the fixed station) and spatial (cruises) variation. In general, nymphs of different instar stages dominated the population, followed by females and males. The sex ratio was female-biased, with a higher number of females than males. Presence and prevalence of eggs, exuviae (molts), and early nymphal stages indicate a year round breeding cycle by H. germanus. The apparent optimum temperature for H. germanus occurrence in the central Red Sea was at 28.2 • C, corresponding to peak abundances in spring and fall. Absence of any significant correlation of the abundances with environmental parameters indicate relative resilience of H. germanus to changes in environmental conditions.

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Section: Distribution and Abundancesupporting

confidence: 87%

Section: Introductionmentioning

confidence: 99%

Distribution and Characteristics of Halobates germanus Population in the Red Sea

2019

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“…So far, the only region where two or more species are known to co-occur in comparable densities is along the Kuroshio Current between the southeastern East China Sea and the southern Pacific coast of Japan (Ikawa et al 2004). In the North Pacific, Halobates micans and H. germanus are usually found south of the habitat zone of H. sericeus ( Figure 6A).…”

Section: Co-occurrence and Spatio-temporal Variationsmentioning

confidence: 99%

“…Temporal changes in species composition in the East China Sea were possibly due to different temperature preferences among the three species (Ikawa et al 2004). In the East China Sea, when the SST was lowest (23.28C), the most common insects caught were H. sericeus.…”

Section: Co-occurrence and Spatio-temporal Variationsmentioning

confidence: 99%

Skaters of the seas – comparative ecology of nearshore and pelagicHalobatesspecies (Hemiptera: Gerridae), with special reference to Japanese species

Ikawa

Okabe

Cheng

2012

Marine Biology Research

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The insects overwhelm all other organisms of the world in species numbers and diversity. However, there are relatively few insects that inhabit the sea. Most of them are confined to the intertidal zone, with only five species of sea skaters, genus Halobates, having been successful in colonizing the open ocean. We discuss the ecology of both coastal and pelagic Halobates and the closely related genus Asclepios, focusing on their distribution ranges and adaptive strategies to marine environments accompanied by brief discussions of their biology. Updated information on the known localities for three species of Asclepios and some 40 coastal species of Halobates are presented. Many species live in vulnerable coastal habitats exposed to environmental pollution and coastal development. As a case study we trace the historical changes in populations of three Japanese sea skaters, Asclepios shiranui, Halobates matsumurai and H. japonicus, all designated as endangered species. For oceanic Halobates, we present an updated distribution map along with global current systems and sea-surface temperatures, examine interactions between distribution ranges and physical factors at the airÁsea interface and discuss spatio-temporal variations in populations of each species. Finally, we infer the life history strategy of oceanic Halobates through theoretical considerations.

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“…The distribution range of pelagic Halobates may also be affected by seasonal changes in winds and currents (Ikawa et al 2002(Ikawa et al , 2004, so even if the distribution ranges of H. micans and H. germanus are separate in the South Indian Ocean, it is possible that their interspecific boundary shifts accordingly. Around the study area, winds and currents are dominantly westward in the boreal summer, but veer toward the east during the boreal winter (Hellerman & Rosenstain 1983;Defense Mapping Agency 1988).…”

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confidence: 99%

Occurrence and density of Halobates micans (Hemiptera: Gerridae) in the eastern South Indian Ocean

Ikawa¹,

Onodera

Okabe

et al. 2007

Entomological Science

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Two species of ocean skaters, Halobates germanus and Halobates micans, live in the tropical and subtropical waters of the Indian Ocean. From December 1992 to December 1993, Halobates was intensively sampled in the easternmost region of the South Indian Ocean (13-18.5°S, 114-121E°), from which there have been a small number of records of Halobates. No H. germanus was caught, but a total of 1190 H. micans were collected, with densities estimated at 13 900-28 100 individuals/km 2 . This suggests that H. micans lives in the study area at high densities comparable to those in the Atlantic and the Pacific Oceans. We also discuss the possible effects of ocean currents and winds on the geographic distributions of the two Halobates species in the eastern South Indian Ocean.

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Distribution of the oceanic insects Halobates (Hemiptera: Gerridae) off the south coast of Japan

Cited by 11 publications

References 8 publications

Distribution and Characteristics of Halobates germanus Population in the Red Sea

Distribution and Characteristics of Halobates germanus Population in the Red Sea

Skaters of the seas – comparative ecology of nearshore and pelagicHalobatesspecies (Hemiptera: Gerridae), with special reference to Japanese species

Occurrence and density of Halobates micans (Hemiptera: Gerridae) in the eastern South Indian Ocean

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