Patterns of species richness and introduced species in native freshwater fish faunas of a Mediterranean-type basin: the Guadiana River (southwest Iberian Peninsula)

New fieldwork has brought the entire "orthopteroid" fauna of the Galápagos Islands to a total of 57 species, in 37 genera, and 7 insect orders. Identification keys and distributional details are given for the 24 species in the order Orthoptera (s.str.) (Ensifera and Caelifera). Of these, 19 species (and 2 genera) are endemic, 2 species are native (naturally occurring elsewhere in tropical America), and 3 species are presumed to have been introduced by humans. It is assumed that ancestral natural colonizations occurred through the air by flying ancestors or through rafting and ocean-surface transport by flightless ancestors (in Gryllidae; Nemobiinae and Mogoplistinae). Of the indigenous (non-introduced) species, 71% of Orthoptera (s.str.) and 72% of all orthopteroids of the Galápagos Islands are now flightless in one or both sexes. Considering the richness of the total orthopteroid fauna in mainland Ecuador, the island fauna is very highly impoverished. Evolution and diversification are modest in the Galápagos orthopteroids compared with some other plants and animals. Some species (probably descendant from coastal arid zone ancestors) are now limited to either moist highland or cave habitats. Species richness is significantly positively correlated with island ecological complexity and island area.

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Patterns in species richness and endemism of European freshwater fish

Global Ecology and Biogeography ◽

10.1111/j.1466-822x.2006.00264.x ◽

2006 ◽

Vol 0 (0) ◽

pp. 061120101210016-???

Author(s):

Yorick Reyjol ◽

Bernard Hugueny ◽

Didier Pont ◽

Pier Giorgio Bianco ◽

Ulrika Beier ◽

...

Keyword(s):

Species Richness ◽

Freshwater Fish

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Environmental correlates of species richness for native freshwater fish in Oregon, U.S.A.

Journal of Biogeography ◽

10.1046/j.1365-2699.1999.00274.x ◽

1999 ◽

Vol 26 (2) ◽

pp. 257-273 ◽

Cited By ~ 69

Author(s):

D. Rathert ◽

D. White ◽

J. C. Sifneos ◽

R. M. Hughes

Keyword(s):

Species Richness ◽

Freshwater Fish ◽

Environmental Correlates

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Climate and species richness patterns of freshwater fish in North America and Europe

Journal of Biogeography ◽

10.1111/jbi.12216 ◽

2013 ◽

Vol 41 (3) ◽

pp. 452-463 ◽

Cited By ~ 24

Author(s):

David Griffiths ◽

Chris McGonigle ◽

Rory Quinn

Keyword(s):

Species Richness ◽

North America ◽

Freshwater Fish ◽

Richness Patterns

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Maximum local helminth parasite community richness in British freshwater fish: a test of the colonization time hypothesis

Parasitology ◽

10.1017/s0031182000074862 ◽

1993 ◽

Vol 106 (1) ◽

pp. 91-100 ◽

Cited By ~ 54

Author(s):

J.-F. Guégan ◽

C. R. Kennedy

Keyword(s):

Species Richness ◽

Host Range ◽

Freshwater Fish ◽

Host Species ◽

Fish Host ◽

Helminth Species ◽

Species Number ◽

Sampling Effort ◽

Component Community ◽

Colonization Time

SUMMARYThe investigation of Price & Clancy (1983), which demonstrated a significant positive correlation between total helminth species number per host species and geographical range of freshwater fish host species in Britain, was re-examined using a different measure of parasite species richness. Re-calculation of the correlations between the two parameters after controlling for the effect of the composition of the list of fish by excluding, on biological and distributional grounds, 2 species of agnathans and 7 species of introduced teleosts, and for the effect of sampling effort by using helminth richness in the richest component community of each fish species rather than check-list data, reveals no significant relationship between helminth species richness and host range. Habitat and an omnivorous host diet now appear more significant determinants of helminth richness than the accumulation of parasites by predation. The findings provide little support for the interpretation of the relationship between helminth species richness and host range in terms of island biogeographic theory, but do support an alternative explanation in terms of the colonization time hypothesis, i.e. that helminth species richness is related to the time since the fish host arrived in Britain.

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An update to the Iberian spider checklist (Araneae)

Zootaxa ◽

10.11646/zootaxa.4614.2.1 ◽

2019 ◽

Vol 4614 (2) ◽

pp. 201 ◽

Cited By ~ 6

Author(s):

VASCO VEIGA BRANCO ◽

EDUARDO MORANO ◽

PEDRO CARDOSO

Keyword(s):

Species Richness ◽

New Species ◽

Iberian Peninsula ◽

Species Distribution ◽

Endemic Species ◽

Balearic Islands ◽

Sampling Effort ◽

Full Data ◽

Ciudad Real ◽

Online Catalogue

We updated a previous database that compiled all the information available in 2010 for the species distribution of spiders (Araneae) in the Iberian Peninsula, Balearic Islands (Illes Balears) included. By the end of 2018 a total of 30834 records were compiled. These belong to 1493 species, 282 of those endemic to the peninsula, across 56 families and 402 genera. This represents an increase of approximately 14% in the number of species in the last nine years. From all families found in the Iberian Peninsula, Araneidae represent the highest number of records (3315), Linyphiidae the highest species richness (302) and Dysderidae the highest endemic richness (58). When considering only the 2010 decade, Linyphiidae lead in both number of records (1417) and species (49), but Gnaphosidae have the highest newly described endemic richness (18). When looking at the full data per province, the largest number of records are located in Illes Balears (1864), followed by Barcelona (1287). When it comes to species, Huesca (474) and Barcelona (470) are the richest provinces. However, it is Illes Balears that possesses the largest known endemic richness (43), followed by Beja and Faro (39). Regarding the last decade, Illes Balears received the largest sampling effort with 901 records, followed by Girona (806). Ciudad Real had the highest increase in known richness with 191 new species to the province, followed by León and Lleida (188). The most new endemic species were found in Faro (16), followed by Almería and Cádiz (13). This checklist is accompanied by an online catalogue where all its information is fully listed.

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