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A synthesis of the external morphology of cypridiform larvae of Facetotecta (crustacea: Thecostraca) and the limits of the genus Hansenocarisстатья
- Авторы: Kolbasov Gregory A., Savchenko Alexandra S., Dreyer Niklas, Chan Benny K.K., Høeg Jens T.
- Журнал: Ecology and evolution
- Том: 12
- Номер: 11
- Год издания: 2022
- Издательство: Blackwell Pub. Ltd.
- Местоположение издательства: [Oxford], England
- Первая страница: 1
- Последняя страница: 21
- DOI: 10.1002/ece3.9488
- Аннотация: Although the naupliar and cypridiform stages of the enigmatic y-larvaeof Facetotectahave been found in the marine plankton worldwide, they still represent the last significantgroup of crustaceans for which the adult forms are still unknown. From anumber of y-cypridsrepresenting different taxa from different locations, we employscanning electron microscopy to describe fine morphological details of all externalstructures of this unique larval form. We document different segmentation patternsof the abdomen and presence/absence of the labrum and structural differences inthe antennules, labrum, paraocular process, thoracopods, and telson lend support forthe erection of several new genera as opposed to the single Hansenocaris. The datapresented here emphasize the morphological limits of the genus Hansenocaris and the“bauplan” of cyprydiform larvae of Facetotecta. Although the optimum pathway is ajoint analysis of both molecular and morphological characters, we use the morphologicalcharacters of y-cypridsto align them cladistically and determine the limits ofthe genus Hansenocaris s.s. and describe common characters for all y-cypridsincludingsix pairs of the lattice organs instead five pairs considered as a ground pattern forall Thecostraca. We also determine plesiomorphic and apomorphic characters of allknown y-cypridsand separate them from other thecostracan cypridiform larvae.
- Добавил в систему: Колбасов Григорий Александрович
Прикрепленные файлы
| № | Имя | Описание | Имя файла | Размер | Добавлен |
|---|---|---|---|---|---|
| 1. | Полный текст | Ecology_and_Evolution_-_2022_-_Kolbasov_-_A_synthesis_of_... | 1,2 МБ | 19 ноября 2022 [Kolbasov] |