A Contribution Towards a Revision of the Aquatic Oligochaeta of Africa

Brinkhurst, Ralph O.

doi:10.1080/00445096.1966.11447340

Cited by 41 publications

(35 citation statements)

References 19 publications

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“…80% de la trentaine d'espèces actuellement identifiées au sein de cette famille d'origine ancienne pan-Gondwanienne sont confinées au sud du Tropique du Capricorne dans l'hémisphère austral. Les espèces les plus septentrionales de la faune africaine, exception faite de Astacopsidrilus naceri, ont été décrites en provenance du lac Tanganyika (Brinkhurst 1970, Martin & Brinkhurst 1994. La nouvelle espèce de Phreodrilidae récoltée dans les eaux souterraines du Maroc peut être considérée comme une forme relicte, à l'instar des quelques espèces observées au nord du Tropique du Capricorne, et inféodées, sauf exception, à des sites refuges (anciens lacs, lacs de haute altitude, eaux souterraines).…”

Section: Introductionunclassified

Contribution à l'écologie de l'espèceAstacopsidrilus naceriGiani & Martin, 1995 (Phreodrilidae, Oligochaeta) en provenance des eaux souterraines du Maroc

Juget

Yacoubi-Khebiza

1997

Ann. Limnol. - Int. J. Lim.

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An ecological approach to the distribution of Astacopsidrilus naceri in wells and hyporheic zone of rivers in the western High Atlas (Morocco) has enabled us to categorise this n. species as a member of stygofauna and demonstrate its preference for hyporheic biotopes and sandy sediments, as well as the preponderant role of granulometric factors in its distribution.The gut content of two taxa, Astacopsidrilus and Trichodrilus, cohabiting and predominating the oligochaete fauna in the underflow of Oued Makhfaman, a tributary of Oued N'Fis (High Atlas, near Marrakech), could be characterized by the amount and size of the ingested sandy particles. This analysis showed a greater absorbency of the digestive system of Astacopsidrilus naceri, in comparison with to the genus Trichodrilus which is strictly limivorous. This suggests a competitiveness between these two taxa.

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Section: Introductionunclassified

Contribution à l'écologie de l'espèceAstacopsidrilus naceriGiani & Martin, 1995 (Phreodrilidae, Oligochaeta) en provenance des eaux souterraines du Maroc

Juget

Yacoubi-Khebiza

1997

Ann. Limnol. - Int. J. Lim.

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“…hoffmeisteri^(sensu lato) from the southern parts of the world. Among the other species studied by us, L. claparedianus is represented in all northern continents, and this taxon is also known from all parts of the southern hemisphere except Antarctica (Brinkhurst 1966, Brinkhurst 1971, Brinkhurst and Marchese 1988, Pinder and Brinkhurst 2000.…”

Section: Geographical Distributionmentioning

confidence: 99%

Extensive cryptic diversity in the cosmopolitan sludge worm Limnodrilus hoffmeisteri (Clitellata, Naididae)

Liu

Fend²,

Martinsson

et al. 2017

Org Divers Evol

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Limnodrilus hoffmeisteri Claparède, 1862 is a common freshwater worm, often regarded as an indicator of organic pollution. The taxonomic status of this species is controversial due to great variation in morphological features. Numerous morphological forms of L. hoffmeisteri are recorded in the literature, especially from Europe and North America. Today, DNA-based species delimitation assumes that species boundaries can be more objectively and effectively estimated using genetic data rather than with morphological data alone. To investigate if L. hoffmeisteri is a single species, 295 worms identified as either L. hoffmeisteri or other similar (congeneric) morphospecies, using currently accepted morphological criteria, were collected from 82 locations in the northern hemisphere. The number of primary species hypotheses (PSHs) was first explored with cytochrome oxidase subunit I (COI), the proposed DNA barcode for animal species, and with data for all specimens. Both automatic barcoding gap discovery (ABGD) and the Bayesian general mixed Yule coalescent (bGMYC) model revealed the existence of ≥25 distinct PSHs (COI lineages) in our dataset. Then, smaller samples of individuals representing major COI lineages were used for exploration of a nuclear locus, the internal transcribed spacer (ITS) region. In the ITS gene tree (81 sequences), generated by BEAST, 16 well-supported terminal groups were found, but not all of these groups were congruent with the PSHs found in the COI tree. As results across these different analyses were inconsistent, we resorted to analyzing reciprocal monophyly between gene trees and used a minimum consensus of all evidence, suggesting that there are 13 separately evolving lineages (=13 species) within our sample. The smallest uncorrected COI p-distance between these species is 12.1%, and the largest intraspecific p-distance is 16.4%, illustrating the problem of species delimitation with a DNAbarcoding gap as the sole criterion. Ten of these species are morphologically identified as BL. hoffmeisteri,^the remaining three can be attributed to morphologically distinct congeneric species. An individual from the type locality in Switzerland was designated as a neotype of L. hoffmeisteri sensu stricto. This worm belongs to one of the ten species, and this lineage is widely distributed in Europe, Asia, and North America. The remaining nine species show a mixed distribution pattern; some appear to be endemic to a restricted area, others are Holarctic. Our results provide clues to the future revalidation of some of the nominal species today placed in synonymy with L. hoffmeisteri. A BEAST analysis, based on previously published and newly generated 16S data, suggested that this complex contains also other species than those studied by us. By integrating additional genetic data, it will be possible to identify these and additional specimens in future studies of Limnodrilus, and the neotype provides a baseline for further revisions of the taxonomy of the L. hoffmeisteri complex.

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“…Monopylephorus parvus has been reported from widely separated areas of the world, from Denmark in the north (DITLEVSEN 1904) to Port Elizabeth, South Africa in the south (BRINKHURST 1966), and from both sides of the North Pacific Ocean (BAKER & BRINKHURST 1981, ERsE.us 1984. In addition, the records are from sites with much different salinities.…”

Section: Genus Monopylephorus Levinsen 1884mentioning

confidence: 99%

Marine Tubificidae (Oligochaeta) from a mangrove habitat in Kenya

Erséus¹

1999

Tropical Zoology

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A Contribution Towards a Revision of the Aquatic Oligochaeta of Africa

Abstract: In this review I have attempted to trace all records of aquatic "microdrile" worms mentioned in the rather small number of papers dealing with the fauna of Africa, including Madagascar. New material has also been studied.

Cited by 41 publications

References 19 publications

Contribution à l'écologie de l'espèceAstacopsidrilus naceriGiani & Martin, 1995 (Phreodrilidae, Oligochaeta) en provenance des eaux souterraines du Maroc

Contribution à l'écologie de l'espèceAstacopsidrilus naceriGiani & Martin, 1995 (Phreodrilidae, Oligochaeta) en provenance des eaux souterraines du Maroc

Extensive cryptic diversity in the cosmopolitan sludge worm Limnodrilus hoffmeisteri (Clitellata, Naididae)

Marine Tubificidae (Oligochaeta) from a mangrove habitat in Kenya

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