A harpellalean fungus, Pennella angustispora, was collected in hindguts of blackfly larvae of Simulium (Simulium) japonicum, The larvae were collected at two small streams (150 m and 170 m above sea level) located ca. 600 m northwest of the Kanagawa Prefectural Museum of Natural History, Iryuda, Odawara, Japan. Those larvae were dissected to observe fungi both in hindguts and in midguts. Seven out of twenty larvae were infected with P. angustispora. This is the first record of this fungus in Kanagawa prefecture. Double infections with both Harpella melusinae (midgut) and P. angustispora (hindgut) in the same individuals were also observed.

View full abstract

Faunal surveys of intertidal zone of 6 stations that were located on the rocky shore and the artificial coast in Enoshima island in Sagami bay of central Japan, were carried out from April to May in 2012. In this study, totally 178 species of macro benthic animals in which contained Porifera 5 species, Cnidaria 8 species, Platyhelminthes 2 species, Nemertea 1 species, Sipuncula 2 species, Annelida 19 species, Mollusca 73 species, Arthropod 54 species, Bryozoa 1 species, Echinodermata 10 species, Chordata; Urochordata 3 species, were recorded. The total numbers of the preceding surveys at same localities were 83 species in 1987, 120 species in 1992, 157 species in 1997, 196 species in 2002 and 183 species in 2007, so that the thirdly large number of species was recognized in this survey. It is discussed that the environment conditions, especially the quality of water, affect the faunal constituent and total number of species.

View full abstract

Octopus cyanea Gray, 1849 (Cephalopoda; Octpodidae) is widely distributed in shallow waters of subtropic and tropic regions of Indo-Pacific Ocean. In Japan, O. cyanea is recorded from Hachijo Island to Ogasawara Islands and from Shikoku to Ryukyus. No record about this octopus has ever been reported from Sagami Bay. We newly report three obvious records of this species from the bay depending on the specimen and the photographs. This is the northernmost records for this species in Japan.

View full abstract

A specimen of Homarus americanus H. Milne Edwards, 1837 was collected by beam trawl net at bottom off Yokohama, Tokyo Bay. This is the first record on the bases of specimen from the bay.

View full abstract

From June 2007 to October 2009, seasonal occurrence patterns of Polyphylla albolineata were investigated near the shore area in Fujisawa City, Kanagawa Prefecture, central Japan. 502 individuals (371 males and 131 females) of P. albolineata, along with 348 individuals of other coleopteran species, were found from May to September 2009. Adults of P. albolineata were notably found in the short period from June to July, the peak time of their appearance was earlier than that of other coleopteran species, for example, Melolontha spp. In terms breeding, adult female P. albolineata laid several eggs. The larval period lasted for approximately 2 years, with the larvae feeding on Calystegia soldanella, Oenothera spp. and Carex pumila. The larvae changed into pupae and emerged thereafter. Newly emerged adults laid many eggs without feedings normally. New larvae hatched from these eggs. In addition to Pinus thunbergii, 3 plants were useful for their valuable food.

View full abstract

The fish fauna of Sagami Bay was researched on the basis of landed fishes on Misaki fish market. 588 fish species had been collected by our survey since 1986. In this report, six species are newly added to our fish collection. Dasyatis bennetti is recorded for the first time from Sagami Bay.

View full abstract

We are studying of fish fauna in the southwestern coast of the Miura Peninsula since 1988. 471 species of fishes were previously recorded. 13 species are newly added in the present study from November 2010 to August 2012. Pseudoblennius sp. 4, and Zoarchias major are the first record on the basis of specimens from Sagami Bay.

View full abstract

A specimen of Squaliolus aliae was collected by a seine net at surface off Hiratsuka, central Sagami Bay. This is first record on the bases of specimen from the bay, where is the northernmost locality of this species.

View full abstract

Occurrences of a deepwater stingray, Plesiobatis daviesi (Wallace, 1967) (Rajiformes: Plesiobatidae) in Sagami Bay were reviewed. There are three certain records of this species from the bay on the basis of specimens including jaws. All specimens were captured on winter season from January to February, and two of them were collected at depths of 120–140 m. The specimens represent the first records for the species from Sagami Bay. It was suggested that this species is widely distributed from Ibaraki Prefecture southward in Japan. The measurements and counts are given in detail.

View full abstract

The purpose of this study was to determine the distribution and population size of the frog Fejervarya kawamurai on Enoshima Island, Kanagawa Prefecture, central Japan. Between September 2009 and July 2011, we conducted a survey of amphibians on Enoshima Island. During this period, we recorded four amphibian species, namely, Bufo japonicus formosus, Hyla japonica, Rana catesbeiana, and F. kawamurai. This is this first time that F. kawamurai has been recorded from Enoshima. They were able to confirm in grassland, sandy beach where flowed of the fresh water and the pavement of the top of the island. The larvae and eggs of F. kawamurai were not found in this investigation the island. The adults, juveniles, larvae, and eggs of F. kawamurai have, nevertheless, been found in rice fields along the Sakai River, the mouth of which is located approximately 300 m from Enoshima. We thus assume that F. kawamurai frogs were carried to Enoshima Island during periods when the Sakai River was in flood.

View full abstract