First records of small-sized young giant squid Architeuthis dux from the coasts of Kyushu Island and the south-western Sea of Japan

2015 ◽  
Vol 8 ◽  
Author(s):  
Toshifumi Wada ◽  
Tsunemi Kubodera ◽  
Morihiko Yamada ◽  
Hiroyoshi Terakado
Keyword(s):  
Genetic Analysis ◽  
Sea Of Japan ◽  
Coastal Waters ◽  
Morphological Traits ◽  
Total Weight ◽  
Mantle Length ◽  
Morphometric Data ◽  
Giant Squid ◽  
Kyushu Island ◽  
First Occurrence

Three individuals of small, young giant squidArchiteuthis duxwere caught in or near Japanese coastal waters during April–June 2013. The first occurrence of a young individual of 140.8 mm dorsal mantle length with a total weight of 44.81 g was recorded on the coast off Uchinoura, Kagoshima, Kyushu Island, southern Japan. The remaining two young individuals, both measuring 332.0 mm in dorsal mantle length with total weights of 390.63 and 356.95 g respectively, were caught on the coast off Hamada, Shimane, south-western Sea of Japan. Most morphological traits of all the specimens were consistent with those ofA. dux, which was supported by further genetic analysis. Here we present some morphological traits of young giant squids with morphometric data and photographs.

scholarly journals Extraordinary numbers of giant squid, Architeuthis dux, encountered in Japanese coastal waters of the Sea of Japan from January 2014 to March 2015

2016 ◽  
Vol 48 (3) ◽  
pp. 1391-1400 ◽  
Author(s):  
Tsunemi Kubodera ◽  
Toshifumi Wada ◽  
Masahito Higuchi ◽  
Akiko Yatabe
Keyword(s):  
Sea Of Japan ◽  
Coastal Waters ◽  
The Sea Of Japan ◽  
Giant Squid

scholarly journals Morphological and genetic analysis of Gracilaria sp. cultured in ponds and coastal waters

2019 ◽  
Vol 370 ◽  
pp. 012018
Author(s):  
N I S Arbit ◽  
S B A Omar ◽  
E Soekendarsi ◽  
I Yasir ◽  
J Tresnati ◽  
...  
Keyword(s):  
Genetic Analysis ◽  
Coastal Waters

scholarly journals The effect of escape gaps of cylinder folding traps on fish catch at the coastal waters of Tuban Regency

2021 ◽  
Vol 322 ◽  
pp. 03002
Author(s):  
Farrel Nafis Adyatama ◽  
Ghassan Nurul Huda ◽  
Nahla Alfiatunnisa ◽  
Faizal Rachman ◽  
Supardjo Supardi Djasmani ◽  
...  
Keyword(s):  
Coastal Waters ◽  
Marine Organisms ◽  
Total Weight ◽  
Total Catch ◽  
Catch Per Unit Effort ◽  
Unit Effort ◽  
Significant Difference ◽  
Fish Catch ◽  
Swimming Crabs

The purpose of this study is to determine the effect of the escape gap of cylinder folding trap on catch per unit effort (CPUE), trap rate, composition, and size of fish caught in the coastal waters of Tuban Regency. The research was conducted in November 2019 by deploying 60 units in ten experimental fishing trips at different locations. The traps were 20 units without escape gap, 20 units with an escape gap of 3 cm x 6 cm, and 20 units with an escape gap of 4 cm x 7 cm. Overall, the experiments resulted in a collection of 22 species of marine organisms, such as swimming crabs (33% of total weight), snails, shrimps, crabs, fishes (55% of total weight), and cuttlefish. The highest CPUE was found for the traps with escape gaps of 4 cm x 7 cm, i.e., 9.18 gr/trap/trip. There was no significant difference in the total catch, the weight of catches, trap rate, and catch per unit effort (CPUE) among the three types of traps.

scholarly journals Assessment of ecological state of the Posyet Bay (the Sea of Japan) by heavy metals content in brown algae

2017 ◽  
Vol 6 (2) ◽  
pp. 91-95
Author(s):  
Nadezhda Konstantinovna Khristoforova ◽  
Anna Dmitrievna Kobzar
Keyword(s):  
Heavy Metals ◽  
Sea Of Japan ◽  
Coastal Waters ◽  
Atmospheric Transport ◽  
The Sea Of Japan ◽  
High Concentration ◽  
The North ◽  
Recreational Pressure ◽  
North Western ◽  
Sargassum Miyabei

The paper contains the study of heavy metals in three species - Sargassum miyabei , Sargassum pallidum , Cystoseira crassipes in the coastal waters of the Posyet Bay. The analysis of the spatial distribution of trace elements revealed the highest contents of zinc, copper and nickel in the Troitsa Bight, due to recreational pressure and a high concentration of nickel and cadmium in Sivuchya Bight that was caused by transboundary atmospheric transport. All of detected concentrations exceed natural background values for the North-Western part of the Sea of Japan. The authors show that there has been a distinct change in the environmental situation in the the Posyet Bay since 1998: the concentration of lead has sharply decreased, the content of zinc, copper and cadmium has decreased, it could be connected with influence reduction in the free economic zone, located on the Chinese side on the Tumannaya River.

scholarly journals Morphological correlates of prey consumed by Podarcis melisellensis (Braun, 1877) and P. siculus (Rafinesque, 1810) (Sauria, Lacertidae) from two mainland regions in the eastern Adriatic area

2013 ◽  
Vol 65 (3) ◽  
pp. 1015-1025
Author(s):  
S.Z. Stamenkovic ◽  
Rada Matic
Keyword(s):  
Resource Availability ◽  
Optimal Foraging ◽  
Morphological Traits ◽  
Prey Size ◽  
Morphological Characteristics ◽  
Optimal Foraging Theory ◽  
Variance Partitioning ◽  
Morphometric Data ◽  
Lizard Species ◽  
Trophic Resource

The correlation between trophic utilization and morphology was studied for two lizard species (Podarcis melisellensis and P. siculus) from two mainland localities in the eastern Adriatic area; this is the first report of trophic and morphometric data for P. melisellensis from mainland populations. Variance partitioning showed that most of the variation in morphological traits for the analyzed lizards was the result of differences between species, and to a lesser extent between sexes. Locality did not have a strong effect on the variation of morphological traits. Prey weight is the only characteristic of prey that generally exhibits correlations with morphological characteristics rather than prey size. The pattern of correlations is generally weaker for P. melisellensis than for P. siculus. Optimal foraging theory predictions were generally confirmed: P. siculus is more constrained by trophic resource availability, with a premium on larger and heavier prey consumed in the less productive locality (SM), which can be relaxed in more productive regions (KL). P. melisellensis shows such constraints only for males in the less productive region (SM). Females of both species consume heavier prey.

The first occurrence of Alectrias gallinus (Lindberg, 1938) (Fam. Stichaeidae) in the Sea of Japan

2009 ◽  
Vol 49 (6) ◽  
pp. 435-440 ◽  
Author(s):  
A. A. Balanov ◽  
D. V. Antonenko ◽  
P. V. Kalchugin ◽  
Kim Sen Tok
Keyword(s):  
Sea Of Japan ◽  
The Sea Of Japan ◽  
First Occurrence

First recorded specimen of the giant squid Architeuthis sp. in Portugal

2005 ◽  
Vol 85 (1) ◽  
pp. 175-176 ◽  
Author(s):  
João Pereira ◽  
Rui Rosa ◽  
Ana Moreno ◽  
Miguel Henriques ◽  
João Sendão ◽  
...  
Keyword(s):  
Atlantic Ocean ◽  
Scientific Literature ◽  
Giant Squid ◽  
Reference Set ◽  
First Occurrence

The first occurrence of a giant squid Architeuthis sp. specimen in Portuguese waters is noted and another reference set of biological and biometrical data provided which may in future be used in conjunction with others to further elucidate important aspects of the identity, biology and ecology of the species. The fact that the specimen is a male is relevant, since males have been much less frequent in the reports in the scientific literature than have females. Additionally, this is the most southerly report of a male known to have occurred in the Atlantic Ocean.

Guide to Squid, Cuttlefish and Octopuses of Australasia

2000 ◽  
Author(s):  
Mark Norman ◽  
Amanda Reid
Keyword(s):  
Coastal Waters ◽  
Distribution Map ◽  
Marine Animals ◽  
Giant Squid ◽  
The World ◽  
Readable Form ◽  
Informative Text ◽  
Australasian Region ◽  
Water Species ◽  
Shallow Coastal Waters

The Australasian region is home to the greatest diversity of cephalopods — squid, cuttlefish, octopuses — in the world. Yet, we know very little about these fascinating marine animals. This book provides insights into the biology and behaviour of more than 60 species. From the Giant Squid to the deadly Blue-ringed Octopus, the secret lives of cephalopods are revealed in a highly readable form with outstanding colour images and informative text. For each species there is a distribution map and identification notes which summarise the main features to look for. While the book focuses on species found in relatively shallow coastal waters, a few of the more bizarre deeper-water species are included. Naturalists, divers, reef-walkers and anglers will find the book authoritative, yet very easy to use. A comprehensive section illustrating cuttlebones will enable beachcombers to identify most of the species they are likely to encounter.

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