Planktonic and periphytic bdelloid rotifers from Thailand reveal a species assemblage with a combination of cosmopolitan and tropical species

Jaturapruek, Rapeepan; Fontaneto, Diego; Meksuwan, Phuripong; Pholpunthin, Pornsilp; Maiphae, Supiyanit

doi:10.1080/14772000.2017.1353554

Cited by 8 publications

(2 citation statements)

References 38 publications

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“…In contrast to many widespreadMilnesium species, wide ranges of rotifer species are not hypothesised to be human mediated (Fontaneto et al, 2008). Moreover, whereas widespread tardigrade species are more often found to have pantropical distributions (Ga˛siorek et al, 2019b;Ga˛siorek et al, in review; this study) rather than disjunct temperate ranges in the northern and southern hemisphere (Ga˛siorek et al, 2019a), the precedence of pantropical distributions has not been found in rotifers (see Fontaneto et al, 2008;Jaturapruek, Fontaneto, Meksuwan, Pholpunthin, & Maiphae, 2018), as some temperate widespread species were found, e.g., in Europe, Africa and New Zealand. Importantly, we have not identified such disjunct temperate distributions inMilnesium that are likely to be natural (see subsectionMacroevolutionary patterns above).…”

Section: Milnesium Biology and Dispersalmentioning

confidence: 64%

‘Everything is not everywhere’: time-calibrated phylogeography of the genus Milnesium (Tardigrada)

Morek

Surmacz

López

et al. 2021

Preprint

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There is ample evidence that macroscopic animals form geographic clusters termed as zoogeographic realms (zones), whereas distributions of species of microscopic animals are still poorly understood. The common view has been that micrometazoans, thanks to their putatively excellent dispersal abilities, are subject to the ‘Everything is Everywhere but environment selects’ hypothesis (EiE). One of such groups, <1 mm in length, are limnoterrestrial water bears (Tardigrada), which can additionally enter cryptobiosis that should further enhance their potential for long distance dispersion (e.g. by wind). However, an increasing number of studies, including the most recent phylogeny of a eutardigrade genus Milnesium, seem to question the general applicability of the EiE hypothesis to tardigrade species. Nevertheless, all the Milnesium phylogenies published to date were based on a limited number of populations, which are likely to falsely suggest limited geographic ranges. Thus, in order to comprehensively test the EiE hypothesis, here, we considerably enlarged the Milnesium dataset both taxonomically and geographically, and we analysed it in tandem with climate type and reproductive mode. Additionally, we time-calibrated our phylogeny to align it with major geological events. Our results show that, although cases of long distance dispersal are present, they seem to be rare and mostly ancient. Overall, Milnesium species are restricted to single zoogeographic realms, which suggests that these tardigrades have limited dispersal abilities. Finally, our results also suggest that the breakdown of Gondwana may influenced the evolutionary history of Milnesium. In conclusion, phylogenetic relationships within the genus seem to be determined mainly by paleogeography.

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Section: Milnesium Biology and Dispersalmentioning

confidence: 64%

‘Everything is not everywhere’: time-calibrated phylogeography of the genus Milnesium (Tardigrada)

Morek

Surmacz

López

et al. 2021

Preprint

View full text Add to dashboard Cite

show abstract

“…In contrast to many widespread Milnesium species, wide ranges of rotifer species are not hypothesised to be human mediated (Fontaneto et al, 2008 ). Moreover, whereas widespread tardigrade species are more often found to have pantropical distributions (Gąsiorek, Jackson, et al, 2019 ; Gąsiorek et al, in review) rather than disjunct temperate ranges in the northern and southern hemisphere (Gąsiorek, Vončina, et al, 2019 ; Kaczmarek et al, 2020 ), the precedence of pantropical distributions has not been found in rotifers (see Fontaneto et al, 2008 ; Jaturapruek et al, 2018 ), as some temperate widespread species were found, e.g., in Europe, Africa and New Zealand. Importantly, we have not identified such disjunct temperate distributions in Milnesium that are likely to be natural (see subsection 4.1.1 above).…”

Section: Discussionmentioning

confidence: 99%

“Everything is not everywhere”: Time‐calibrated phylogeography of the genus Milnesium (Tardigrada)

et al. 2021

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Weak swimming response of a bdelloid rotifer to chemical cues of a native copepod predator

Parysek

Pietrzak

2020

J Ethol

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Whether bdelloid rotifers can detect and respond to the chemical cues of predators has not been studied, and research on their behaviour is scarce in general. To test for such response, we observed the behaviour of Philodina megalotrocha rotifers in either control or copepod-conditioned water. We then introduced a mechanical disturbance to test if predator odour sensitises rotifers to subsequent cues. We found intensified swimming in P. megalotrocha exposed to Macrocyclops fuscus-conditioned water, i.e. the larger and more predatory of the tested copepods. Such response may be adaptive, depending on the predominant hunting mode of the predator in the particular habitat.

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Planktonic and periphytic bdelloid rotifers from Thailand reveal a species assemblage with a combination of cosmopolitan and tropical species

Cited by 8 publications

References 38 publications

‘Everything is not everywhere’: time-calibrated phylogeography of the genus Milnesium (Tardigrada)

‘Everything is not everywhere’: time-calibrated phylogeography of the genus Milnesium (Tardigrada)

“Everything is not everywhere”: Time‐calibrated phylogeography of the genus Milnesium (Tardigrada)

Weak swimming response of a bdelloid rotifer to chemical cues of a native copepod predator

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