Paedomorphic Tendencies in the Evolution of Daphnia (Daphnia) longispina s. l. Species Group (Crustacea: Cladocera: Daphniidae)


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Ашық рұқсат Ашық рұқсат
Рұқсат жабық Рұқсат берілді
Рұқсат жабық Тек жазылушылар үшін

Аннотация

Paedomorpic tendencies in the evolution of pelagic daphniids with respect to the Daphnia longispina s. l. species group (Crustacea: Cladocera: Daphniidae) are discussed. They concern the reduction of the total length, body length and relative length of the rostrum, relative length of postabdominal processes and decrease in the number of postabdominal teeth, elongation of the caudal spine, swimming antennae, and postabdominal setae. Paedomorphic tendencies in the males of Daphnia cucullata Sars are manifested in their similarity to females, and, in males of Daphnia galeata Sars, they are mainly manifested in their similarity to juvenile males of Daphnia longispina (O. F. Müller). Paedomorphic evolution and adaptation to the pelagic mode of life may be strongly interrelated, and occuring in parallel and even independently from each other due to the mosaic pattern of evolution.

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Авторлар туралы

A. Kirdyasheva

Papanin Institute for Biology of Inland Waters, Russian Academy of Sciences

Email: alexey-a-kotov@yandex.ru
Ресей, Borok, Nekouzskii raion, Yaroslavl oblast, 152742

A. Kotov

Severtsov Institute of Ecology and Evolution, Russian Academy of Sciences; Kazan Federal University

Хат алмасуға жауапты Автор.
Email: alexey-a-kotov@yandex.ru
Ресей, Moscow, 119071; Kazan, 420008

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