A cytological description of sibling species of Simulium venustum and S. verecundum with standard maps for the subgenus Simulium Davies (Diptera)

Rothfels, Klaus; Feraday, R. M.; Kaneps, Aina

doi:10.1139/z78-155

Cited by 117 publications

(155 citation statements)

References 7 publications

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“…Chromosome terminology, including names of markers, follows that of Rothfels et al [1978] and Adler et al [2004]. Numbering of chromosome sections follows the standard map of the subgenus Simulium for IS, IL, IIL, and IIIS [Rothfels et al, 1978] and IIS and IIIL [Tangkawanit et al, 2009].…”

Section: Cytological Studymentioning

confidence: 99%

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Cytotaxonomy, Morphology and Ecology of the Simulium nobile Species Group (Diptera: Simuliidae) in Thailand

Tangkawanit

Kuvangkadilok²,

Trinachartvanit³

et al. 2011

Cytogenet Genome Res

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The polytene chromosomes of 512 larvae of the Simulium nobile species group collected from 16 stream sites in northern, central and southern Thailand were examined. Band-by- band comparisons relative to the established standard chromosome map for the subgenus Simulium distinguished the 2 species of this group, S. nobile and S. nodosum. The differences are mainly due to the position of the nucleolar organizer, pseudochromocenter, and fixed and polymorphic inversions. S. nobile is a monomorphic species, while S. nodosum is a polymorphic species. The morphology of these taxa is described based on the gill filaments and the color of the antennae and female genitalia. S. nobile is distributed in southern Thailand at low altitudes, whereas the distribution of S. nodosum is in the north at higher altitudes.

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Section: Cytological Studymentioning

confidence: 99%

“…subgenus Simulium was proposed by Rothfels et al [1978] to compare species related to the subgenus. However, after examination of more species, it was found that the short arm of chromosome II (IIS) and the long arm of chromosome III (IIIL) were limited to the North American Simulium venustum group.…”

mentioning

confidence: 99%

Cytotaxonomy, Morphology and Ecology of the Simulium nobile Species Group (Diptera: Simuliidae) in Thailand

Tangkawanit

Kuvangkadilok²,

Trinachartvanit³

et al. 2011

Cytogenet Genome Res

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“…To make species identifications, chromosome-banding patterns were compared with standard maps available in the literature (e.g. Rothfels et al, 1978) or on file in the laboratory of Adler. For both the spring and summer collections, two species pairs (Simulium fibrinflatum/notiale, Simulium venustum/verecundum) were taxonomically unresolved at the time of this study and were thus excluded from consideration when their identities could not be confirmed.…”

Section: Study Area and Sampling Regimementioning

confidence: 99%

Spatial distribution of rare species in lotic habitats

McCreadie¹,

Adler²

2008

Insect Conserv Diversity

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Abstract. 1. Species rarity is a common phenomenon in the biological world. Although rare species have always interested biologists, the meaning of 'rare' has not always been clear with the definition of rarity often arbitrary.2. In the current study, we investigate rarity in stream ecosystems using black flies (Diptera: Simuliidae). We defined rare species a priori as those species found ≤ 10% of stream sites examined (n = 111 streams for 'summer collections'; n = 88 collection for 'spring' collections). Hence, we are exploring only one axis of rarity, restricted range.3. We first consider the distribution of each rare species separately to determine if the mean (euclidian) distance among streams (habitats) for each rare species differs from a random model. We next took a collective approach by pooling all rare species to determine the influence of stream conditions, niche breadth, and distance among habitats on rarity.4. Even within this biologically uniform group of flies, dispersal, range limits, and stream conditions all might play a role in rarity, and the importance of each of these factors appear to vary among species. Rather than looking for broad causes of rarity, future studies might be more fruitful if they looked at species-specific causes.

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“…Chromosomal landmarks are consistently found within an arm and, therefore, aid arm recognition (Rothfels et al, 1978). A primary nucleolar organizer can appear anywhere in the complement, though its location is consistent at some taxonomic level (Adler et al, 2004).…”

Section: Introductionmentioning

confidence: 99%

Chromosomal characteristics and evolutionary relationships of the Palearctic black fly Simulium carthusiense (Diptera: Simuliidae)

Adler¹,

Seitz²

2014

Eur. J. Entomol.

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Abstract. The giant, polytene chromosomes of Simulium carthusiense Grenier & Dorier, 1959 were mapped, and all rearrangements were resolved relative to the standard banding sequence for the S. vernum group. The species is chromosomally cohesive from Austria to Spain, and is characterized by a chromocenter, two unique fixed inversions, 10 unique autosomal polymorphisms, and undifferentiated sex chromosomes. Rare individuals (3%) have two types of supernumerary chromosomes, representing the third example of a simuliid species that carries two different supernumeraries in the same individuals. Band-sequence comparisons with chromosomal outgroups indicate that S. carthusiense is the sister species of a clade that includes S. beltukovae (Rubtsov, 1956), the S. cryophilum complex, and S. urbanum Davies, 1966.

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A cytological description of sibling species of Simulium venustum and S. verecundum with standard maps for the subgenus Simulium Davies (Diptera)

Cited by 117 publications

References 7 publications

Cytotaxonomy, Morphology and Ecology of the <i>Simulium nobile</i> Species Group (Diptera: Simuliidae) in Thailand

Cytotaxonomy, Morphology and Ecology of the <i>Simulium nobile</i> Species Group (Diptera: Simuliidae) in Thailand

Spatial distribution of rare species in lotic habitats

Chromosomal characteristics and evolutionary relationships of the Palearctic black fly Simulium carthusiense (Diptera: Simuliidae)

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