Arctodiaptomus kamtschaticus (Crustacea: Calanoida) in the Vilyuchinsky Nature Park: an addition to the description of the Russian endemic

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Resumo

The Russian endemic crustacean Arctodiaptomus (Haplodiaptomus) kamtschaticus Borutzky, 1953 was found in a new habitat – a small unnamed lake of the Vilyuchinsky Nature Park on the Kamchatka Peninsula. The morphology of the species has been studied in detail using a scanning electron microscope. The mandible, rostrum, and Shmelevsky organ on the middle segment of the endopodite of the 2nd pair of swimming legs were described for the first time. The description of the morphology of the fifth pair of male and female legs has been significantly supplemented.

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Sobre autores

N. Sheveleva

Limnological Institute SB of Russian Academy of Sciences

Autor responsável pela correspondência
Email: shevn@lin.irk.ru
Rússia, Irkutsk

V. Podshivalina

Chuvash State University; Prisursky State Nature Reserve

Email: verde@mail.ru
Rússia, Cheboksary; Cheboksary

O. Pen’kova

Irkutsk State University

Email: penkova@yandex.ru
Rússia, Irkutsk

Bibliografia

  1. Боруцкий Е.В. 1953. Новый вид диаптомуса (Copepoda, Calanoida) из озер Камчатки // Бюл. Москов. об-ва испыт. природы. Отдел биол. Т. 58. Вып. 4. С. 47.
  2. Боруцкий Е.В., Степанова Л.А., Кос М.С. 1991. Определитель Calanoida пресных вод СССР. Л.: Наука.
  3. Лепская Е.В., Бонк Т.В., Свириденко В.Д. 2019. Голубые озера (Камчатка): биогенный фон и элементы водной биоты // Сохранение биоразнообразия Камчатки и прилегающих морей: Матер. ХX Междунар. науч. конф., Петропавловск-Камчатский, 12–13 ноября 2019 г. Петропавловск-Камчатский: Камчатпресс. Голубые озера (Камчатка): биогенный фон и элементы водной биоты. С. 209.
  4. Куренков И.И. 2005. Зоопланктон озер Камчатки. Петропавловск-Камчатский: Изд-во КамчатНИРО, 2005.
  5. Huys R., Boxshall G.A. 1991. Copepod evolution. L.: The Ray Societ.

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2. Fig. 1. Location of Lake Green (circle) and unnamed lake (square) on Vilyuchinskaya Hill on the Kamchatka Peninsula.

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3. Fig. 2. Arctodiaptomus (Haplodiaptomus) kamtschaticus, female: a – general view, ventral; a′ – furca; b – last thoracic segment with fragments (b′, b′′) and urosome; c – rostrum; g – antennula; d – antennula, segments 1–6; e, g – mandible; h – endopodite P2 (the arrow indicates the Shmeilev organ); i – P5; k – exopodite and endopodite P5 with a fragment of the armature of the third segment of the exopodite (k′); l – endopodite and its fragments (l′, l′′); m – first segment of the exopodite and its armature (m′, m′′). Scale: 500 µm (a), 200 µm (d), 100 µm (a′, b, i), 50 µm (b′, b′′, e, h, i), 30 µm (c, j), 20 µm (g, l), 10 µm (e, j′, l, l′′, m′′), 5 µm (m′).

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4. Fig. 3. Arctodiaptomus (Haplodiaptomus) kamtschaticus, male: a – urosome; b – antennula; c – antennula, 1–14 segments; g – P5; d – right P5 with a fragment of endopodite (e'); f – basipodite of right P5 and its fragment (f''); g – coxopodite of right P5; h – second segment of exopodite of right P5 and its fragment (z′′); i – left P5, with endopodite (i′) and fragment of basipodite (i′′); k – exopodite of left P5; l – appendages of the second segment of exopodite of left P5. Scale bars: 200 µm (b), 100 µm (a, c–d), 50 µm (e, f′, g, i), 40 µm (h), 30 µm (j), 20 µm (z′, i′, i′′), 15 µm (d′), 10 µm (l).

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5. Fig. 4. Arctodiaptomus (Haplodiaptomus) kamtschaticus: a – female; b – male. Scale bar: 500 µm.

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