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Identities of Izu Peninsula Cynops pyrrhogaster complex

FrogEyes

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Another study compares populations of Cynops pyrrhogaster on the Izu Peninsula, identifying those on the southern end as Tohoku/Kanto species, and those in the center as Sasayama/Intermediate. This suggests that the latter invaded the peninsula later, dividing populations of the former. This would also seem to support status as two species, as the populations have not merged.

Atsushi Tominaga, Masafumi Matsui and Yasuhiro Kokuryo, 2015. Occurrence and Evolutionary History of Two Cynops pyrrhogaster Lineages on the Izu Peninsula. Current Herpetology Volume 34 Issue 1: 1927.

We investigated phylogenetic positions of Cynops pyrrhogaster from nine localities in the central and southern parts of the Izu Peninsula using the mitochondrial cyt b gene. We revealed that the central and the southern populations are phylogenetically remote. The central Izu lineage belongs to the CENTRAL clade occurring from Chubu through Kinki to Chugoku districts, whereas the southern Izu populations form a lineage sister to the NORTHERN clade, which is distributed in Tohoku and Kanto districts. Genetic differentiation between the southern Izu lineage and the NORTHERN clade is relatively large with the uncorrected p-distance of 3.4%, which suggests their divergence at 3.31 MYA. This estimation indicates their genetic differentiation prior to 1.0 MYA, when the Izu Peninsula was formed through collision of a paleo-oceanic island with Honshu. These results indicate that the ancestor of the southern Izu lineage diverged from the NORTHERN clade somewhere in northern Honshu and then invaded the Izu Peninsula newly formed by collision and settled there. The central Izu lineage thereafter also invaded the peninsula, confining the range of the preceding southern Izu lineage to its current range.
 
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    yeah, im heading over tomorrow morning to move him to this house and feed him. Thanks for the help!
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  • Shane_Yogurt:
    So my axolotl tank cycle just crashed and while i was in the middle of a water change my bucket overflowed and spilled water all of the ground in my brand new home. This is going super well 👍
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    ooff
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    good luck recycling the tank!
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    nevermind! off my game tonight
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    Im so frustrated right now. My axolotl WONT eat and my tank still isnt looking too good. Some extra stress i needed.
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  • John:
    Sorry to hear that Shane. Did you post about it?
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  • Shane_Yogurt:
    No, I havent. Im not really sure why he wont eat. Hes in a 1 gallon tub and still a juvenile. When i offer food he swims away from it. Does he need some extra time? or is this something I should be worried about.
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  • JulMl:
    Hello everyone! I’m new in this world and i need some advices please! I have 2 axolotl babies and currently the water from the tank is from bottled water ( all parameters are good) but i want to change 50% of the water with city tap water. My question is how to change it? Do i need to get axis out, do the change, add the prime, wait (how much?) until its dechlorinated or i can add the tap water directly into the tank with axis in it, and add the prime conditioner? Thank you!!
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  • Asmold1:
    1. You dont need to take them out of the tank to change the water as long as you pour it in slow as to not rattle them around too much
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    2. add the prime to your tap water, for most conditioners the consensus is 5 minutes of waiting time
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    3.After 5 minutes it should be safe to add
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    Thank you so much !!
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  • Asmold1:
    I private messaged you a bit clearer instructions just in case
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    Where can I get blackworms?
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  • John:
    Ebay or Eastern Aquatics
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    Does anyone know someone who can ship axolotls to hawaii? I recently did a water change and my axolotl died and there are no axos for sale right now.
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  • Sylvia88:
    Hello I'm wondering if fridging axolotl is necessary when giving it a salt bath? My fridge is unpredictable it just changes from freezing temperature to melting by itself. And driving me crazy. So I would not be keen to put my axie in these because of the sudden temperature changes it may experience. Can I leave him in a clean dechlorinated water tub in some of the room? Would I then need to refrigerate the salt water ? Or would I just keep it in a same room temperature?! I have everything ready for him to get a salt bath but just wanted to check about this fridging before I do ( waited for approval to join the forum:)
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  • Sylvia88:
    FYI I noticed a white fluffy strings on his gills yesterday. And looking through the forum and some pictures it looks like fungus .
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    Sylvia88: FYI I noticed a white fluffy strings on his gills yesterday. And looking through the forum and... +1
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