Annelida: Euhirudinea and Acanthobdellidae

Davies, Ronald W.; Govedich, Fredric R.

doi:10.1016/b978-012690647-9/50014-4

Cited by 23 publications

(19 citation statements)

References 162 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…As pointed out by Davies and Govedich (2001) leeches show a strong physiological plasticity since they are able to live both in water with low salt concentration and higher salinities than marine water, despite the variations in the physico chemical conditions found in the freshwater aquatic ecosystems. In addition, some species can survive anoxic conditions for several days and hyperoxia for short periods of time.…”

Section: Discussionmentioning

confidence: 99%

Biodiversity and ecology of Hirudinea (Annelida) from the Natural Reserve of Isla Martín García, Río de la Plata, Argentina

César

Martín

Gullo³

et al. 2009

Braz. J. Biol.

View full text Add to dashboard Cite

The Island of Martin Garcia lies at the confluence of the Uruguay and Paraná Rivers (upper Río de la Plata). This island is an outcrop of the crystalline basement. Due to basalt exploitation the island exhibits several ponds covered by carpets of free-floating macrophytes. Seven major environmental variables were measured: water and air temperature, percentage of oxygen saturation, dissolved oxygen, electrical conductivity, total dissolved solids and pH. Eleven leech species were found, Helobdella striata, H. diploides, H. adiastola and H. hyalina were new records. UPGMA clustering of species based on their occurrence in different ecological conditions revealed three main species groups. Canonical Correspondence Analysis (CCA) explained 97.2% of the correlation between species and environmental variables. H. triserialis shows the widest range of tolerance, H. hyalina shows positive relationships to conductivity; H. diploides shows a high correlation with dissolved oxygen, H. striata, H. lineata, and S. similis are negatively correlated with water temperature, and H. simplex is positively correlated with pH. Relationships between the species richness (S) and the sampling sites were negatively correlated with water temperature and positively correlated with dissolved oxygen. Leech biodiversity from the water bodies of Martín García Island, shows a great diversity of species and a wide plasticity regarding the characteristics of the environmental factors considered.Keywords: biodiversity, CCA, cosmopolitan, ecology, endemics, leeches. A Biodiversidade e a Ecologia de

show abstract

Section: Discussionmentioning

confidence: 99%

Biodiversity and ecology of Hirudinea (Annelida) from the Natural Reserve of Isla Martín García, Río de la Plata, Argentina

César

Martín

Gullo³

et al. 2009

Braz. J. Biol.

View full text Add to dashboard Cite

show abstract

“…Leeches belonging to the suborder Arhynchobdellida possess buccal cavities containing ridges or toothed jaws. Some species of arhynchobdellid are known to prey upon smaller annelids, devouring them whole, whereas other species parasitize larger organisms by imbibing blood (Sawyer 1986;Davies & Govedich 2001). Leeches in the suborder Rhynchobdellida possess a pharynx modified to form a muscular proboscis.…”

mentioning

confidence: 99%

“…A variety of invertebrate and vertebrate taxa including molluscs (Daniels & Sawyer 1975;Klemm 1975;Sawyer 1986), fish (Paperna & Zwerner 1974;Burreson & Thoney 1991), aquatic birds (Davies & Wilkialis 1981;Oosthuizen & Fourie 1985), reptiles (Ernst 1971;MacCulloch 1981), amphibians (Brockelman 1969;van der Lande & Tinsley 1976), and mammals (Oosthuizen & Davies 1994;Hong et al 1999) have been identified as hosts for both arhynchobdellid and rynchobdellid species. Leeches have also been known to opportunistically feed on amphibian and fish eggs; however, this feeding strategy is uncommon and is often omitted completely in reviews of leeches (Davies & Govedich 2001). Feeding on amphibian eggs has been documented for the arhynchobdellid leeches Macrobdella decora (Moore 1912(Moore , 1923, M. ditetra (Moore 1953;Beckerdite & Corkum 1973), M. diplotertia (Cargo 1960;Turbeville & Briggler 2003), and Philobdella gracilis (Viosca 1962) and the rhynchobdellid leech Desserobdella picta (Brockelman 1969).…”

mentioning

confidence: 99%

Egg‐feeding in the freshwater piscicolid leech Cystobranchus virginicus (Annelida, Hirudinea)

Light

Fiumera

Porter

2005

Invertebrate Biology

View full text Add to dashboard Cite

Abstract. Leeches are common terrestrial and aquatic annelids, parasitizing or feeding on a wide range of host taxa. Here we report evidence for an unusual feeding behavior of egg‐feeding in the piscicolid leech Cystobranchus virginicus. We identified distended specimens of C. virginicus in the nests of at least 4 different fish species: Campostoma anomalum, Moxostoma carinatum, Moxostoma sp. (either M. anisurum and/or M. breviceps), and Nocomis leptocephalus. We collected a total of 41 leeches from the nests of these host species and documented at least 1 leech in 19 of 55 nests (35%), with many sites containing multiple leeches. Individuals of C. virginicus were not identified feeding on any of the 41 adult specimens of Moxostoma spp. or the 635 adult specimens of Nocomis leptocephalus examined, and were never found in the absence of active host spawning (26 sites). These results are consistent with individuals of C. virginicus being an opportunistic or possibly even an obligate egg‐feeder, potentially timing their own reproductive activities with the spawning of their fish hosts. The current distribution of C. virginicus has been expanded to include North Carolina, South Carolina, and Tennessee. The potential for leech species to induce mortality in developing fish eggs could be a concern for fish conservation and merits further investigation.

show abstract

“…lives in depositional riverbed (Merritt & Cummins, 1996). Erpobdellidae have a sucking apparatus (Davies & Govedich, 1991), and C. brevilineata, Hydroptila sp., and Rheotanytarsus sp. have retreats or cases fastened to substrata by silk thread (Wiederholm, 1983;Wiggins, 1995).…”

Section: Discussionmentioning

confidence: 99%

Responses of benthic invertebrates in an experimental channel to artificial flushes

Mochizuki

Kayaba²,

Tanida

2007

Hydrobiologia

View full text Add to dashboard Cite

A large experimental channel was used to examine the responses of benthic invertebrate communities to artificial flushes. Two artificial flushes were done at a 20-day interval with a 2-fold difference in peak discharge and duration between them. The effects of the flushes on macroinvertebrates were monitored by comparing the abundance of individual taxa, taxon richness, diversity measures, and similarity indices. Taxon richness and abundances of invertebrates were drastically reduced by every flush. However, the diversity of invertebrates was not significantly reduced by the flushes, and the composition was similar before and after each flush. The fast recruitment of some taxa, having short life cycles, reduced the diversity of invertebrates in the interval between the two flushes. The flushes caused significant reductions in the abundance of epiphytes and fauna living in the streambed. The fauna more resistant to flushes were invertebrates that fasten their cases or retreats by silk threads to substrata. Taxa living in sediment under stones and having a sucking apparatus were also resistant to flushes.

show abstract

Annelida: Euhirudinea and Acanthobdellidae

Cited by 23 publications

References 162 publications

Biodiversity and ecology of Hirudinea (Annelida) from the Natural Reserve of Isla Martín García, Río de la Plata, Argentina

Biodiversity and ecology of Hirudinea (Annelida) from the Natural Reserve of Isla Martín García, Río de la Plata, Argentina

Egg‐feeding in the freshwater piscicolid leech Cystobranchus virginicus (Annelida, Hirudinea)

Responses of benthic invertebrates in an experimental channel to artificial flushes

Contact Info

Product

Resources

About