scholarly journals Feeding Habits of the Japanese Tree Frog, Hyla japonica, in the Reproductive Season

2000 ◽  
Vol 17 (7) ◽  
pp. 977-982 ◽  
Author(s):  
Toshiaki Hirai ◽  
Masafumi Matsui
Keyword(s):  
Feeding Habits ◽  
Reproductive Season ◽  
Tree Frog ◽  
Hyla Japonica

Strategy of landing behavior of the tree frog Hyla japonica

2017 ◽  
Vol 327 (10) ◽  
pp. 600-610
Author(s):  
Koushun Kamada ◽  
Ryousuke Tachibanagi ◽  
Hideki Nakagawa
Keyword(s):  
Tree Frog ◽  
Hyla Japonica ◽  
Landing Behavior

scholarly journals Feeding habits of Paralabrax nebulifer (Serranidae) during reproductive and non-reproductive seasons in an adjacent area to Magdalena Bay, Baja California Sur, Mexico

2021 ◽  
Vol 56 (2) ◽  
pp. 89-101
Author(s):  
Julio Alejandro Ysla-Guzmán ◽  
Xchel Gabriel Moreno-Sánchez ◽  
Martín Oscar Rosales-Velázquez ◽  
Víctor Carrasco-Chávez ◽  
José Luis Ortíz-Galindo
Keyword(s):  
Baja California ◽  
Feeding Habits ◽  
Feeding Strategy ◽  
Gonadosomatic Index ◽  
Reproductive Season ◽  
Hepatosomatic Index ◽  
Adjacent Area ◽  
Baja California Sur ◽  
Sardinops Sagax ◽  
Magdalena Bay

The barred sand bass Paralabrax nebulifer is a commercially important fish off the west coast of Baja California Sur. To assess the diet of this species and variations as a function of sex and reproductive condition, 60 specimens were captured using traps during seven seasonal sampling trips from August 2016 to August 2018 in an adjacent area to Magdalena Bay, Baja California Sur, Mexico. The stomach contents of 50 specimens were obtained (23 males and 27 females). Sex was diagnosed by direct observation of the gonads. Based on the gonadosomatic index, hepatosomatic index, and histological analyses, the reproductive season of the barred sand bass was corroborated for August 2016, April, August, and September 2017, and August 2018, and the non-reproductive season was corroborated for November 2016 and March 2018. The Index of Relative Importance (IRI) was used to classify the main diet components, which comprised three fish species, seven crustacean species, and one mollusk species. According to the IRI, the South American pilchard Sardinops sagax and the red pelagic crab Pleuroncodes planipes were the prey that contributed the most (55%) to the barred sand bass diet. The ANOSIM showed that there were significant differences in the amount and type of prey consumed by sex; the SIMPER analysis revealed that the species contributing the most to differences between the sexes were S. sagax (16.58%), Euphylax dovii (15.95%), Stenocionops ovata (12%), and P. planipes (11.82%) for females. There were significant differences in the amount and type of prey consumed between types of reproductive season; the species contributing the most to differences between seasons were Anchoa spp. (27.76%), and P. planipes for non-reproductive season (22.67%), and S. sagax (11.08%) for reproductive season. The feeding strategy of the barred sand bass was that of a specialist carnivorous predator that fed mainly on the fish Sardinops sagax during the reproductive season, which supply the dietary nutritional requirements of the lipids HUFA (arachidonic acid, 20:4n-6; eicosapentaenoic acid, 20:5n-3; docosahexaenoic acid, 22:6n-3), nutrients required to achieve reproductive success. 

scholarly journals Immunocytochemical and Phylogenetic Analyses of an Arginine Vasotocin-Dependent Aquaporin, AQP-h2K, Specifically Expressed in the Kidney of the Tree Frog, Hyla japonica

Endocrinology ◽  
2007 ◽  
Vol 148 (12) ◽  
pp. 5891-5901 ◽  
Author(s):  
Yuji Ogushi ◽  
Hiroshi Mochida ◽  
Takashi Nakakura ◽  
Masakazu Suzuki ◽  
Shigeyasu Tanaka
Keyword(s):  
Apical Membrane ◽  
Water Movement ◽  
Phylogenetic Analyses ◽  
Phosphorylation Site ◽  
Water Channel ◽  
Cysteine Residue ◽  
Arginine Vasotocin ◽  
Tree Frog ◽  
Sequence Motifs ◽  
Hyla Japonica

Water movement occurs across the plasma membrane of various cells of animals, plants, and microorganisms through specialized water-channel proteins called aquaporins (AQPs). We have identified a new member of the amphibian AQP family, AQP-h2K, from the kidneys of Hyla japonica. This protein consists of 280 amino acid residues with two NPA (Asn-Pro-Ala) sequence motifs and a mercury-sensitive cysteine residue just upstream from the second NPA motif. There are two putative N-linked glycosylation sites at Asn-120 and Asn-128 and one protein kinase A phosphorylation site at Ser-262. The AQP-h2K protein was specifically expressed in the apical membrane and/or cytoplasm of principal cells in the kidney collecting ducts. After stimulation with arginine vasotocin, it was translocated from the cytoplasmic pool to the apical membrane. Phylogenetic analysis of AQP proteins from anurans and mammals identified six clusters of anuran AQPs: types 1, 2, 3, and 5 and two anuran-specific types, designated a1 and a2. The cluster AQPa2 contains Hyla AQP-h2 and AQP-h3, which are expressed in the anuran urinary bladder and ventral pelvic skin. AQP-h2K belongs to the type 2, together with mammalian (human and mouse) AQP2, suggesting that AQP-h2K is an anuran ortholog of the neurohypophysial hormone-regulated mammalian AQP2 and that the AQP2 molecule is already present in the anuran mesonephros.

Spatial and Temporal Expression of the Ventral Pelvic Skin Aquaporins duringMetamorphosis of the Tree Frog, Hyla Japonica

2004 ◽  
Vol 199 (2) ◽  
pp. 119-126 ◽  
Author(s):  
T. Hasegawa ◽  
Y. Sugawara ◽  
M. Suzuki ◽  
S. Tanaka
Keyword(s):  
Tree Frog ◽  
Temporal Expression ◽  
Hyla Japonica

Expression of a mammalian aquaporin 3 homolog in the anterior pituitary gonadotrophs of the tree frog, Hyla japonica

2011 ◽  
Vol 343 (3) ◽  
pp. 595-603 ◽  
Author(s):  
Megumi Sato ◽  
Takashi Nakakura ◽  
Yuji Ogushi ◽  
Gen Akabane ◽  
Shingo Kurabuchi ◽  
...  
Keyword(s):  
Anterior Pituitary ◽  
Tree Frog ◽  
Aquaporin 3 ◽  
Hyla Japonica

scholarly journals Normal Stages of Development of a Tree Frog, Hyla japonica Günther

1992 ◽  
Vol 14 (3) ◽  
pp. 129-142 ◽  
Author(s):  
HISAAKI IWASAWA ◽  
JUNKO FUTAGAMI
Keyword(s):  
Tree Frog ◽  
Stages Of Development ◽  
Hyla Japonica
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