Zoology Commons^™

Recent Mass Mortality Of Strongylocentrotus Purpuratus (Echinodermata: Echinoidea) At Malibu And A Review Of Purple Sea Urchin Kills Elsewhere In California, Gordon Hendler

Bulletin of the Southern California Academy of Sciences

Mass mortalities of intertidal purple sea urchins, Strongylocentrotus purpuratus occurred at Malibu Lagoon State Beach, California, in 2010 and 2011. Both events followed the first heavy rain of the season, and coincided with an illegal breaching of the lagoon. Osmotic shock from low-salinity lagoon water, the likely cause of death, may have acted jointly with stress from exposure during especially low tides. Comparable die-offs of purple sea urchins have occurred at other localities after exposure to brackish water or thermal shock. Annually recurring lagoon ruptures at Malibu, combined with predation by western gulls, can have a profound impact on the ...

Etudes On Iurids, Vi. Further Revision Of Calchas Birula, 1899 (Scorpiones: Iuridae), With A Description Of A New Genus And Two New Species., Ersen Aydın Yağmur, Michael E. Soleglad, Victor Fet, František Kovařík

Euscorpius

No abstract provided.

Geographic Variation In The Lower Temperature Tolerance In The Invasive Brown Anole, Anolis Sagrei And The Native Green Anole, Anolis Carolinensis (Sauria: Polychrotidae), Laura Carolina Maria Rubio

Masters Theses

Invasive species are considered to be the second greatest threat to native biodiversity and several factors have been identified as contributing to the success of introduced species, including their initial genetic variation and the ability of populations to adapt to a new environment. Temperature has a significant impact on reptilian ecology and distribution since they ordinarily rely on external heat sources for the maintenance of body temperatures suitable for normal activity. Body temperature affects performance in these organisms given its importance for all aspects of behavior, locomotion, courtship and rates of feeding and growth. Critical thermal tolerances can, therefore, give ...

A Comparison Of Relative Ear Length Between Two Neighboring Populations Of Peromyscus Maniculatus, Joshua S. Willems

Biological Sciences

This study attempts to determine if a significant difference in relative ear length exists between two neighboring populations of Peromyscus maniculatus on the central coast of California. Data was collected from individuals trapped at two plots in the Guadalupe-Nipomo Dunes National Wildlife Refuge and two plots near Black Lake, under the supervision of Francis X. Villablanca, Ph. D. of California Polytechnic State University, San Luis Obispo. A total of 98 individuals were captured over the course of three nights of trapping. A regression analysis was performed comparing the ear lengths of each population relative to body size. The analysis of ...

A New Species Of Metathelazia (Nematoda: Pneumospiruridae) From The Lungs Of A Nine-Banded Armadillo In Central Mexico = Especie Nueva De Metathelazia (Nematoda: Pneumospiruridae) De Los Pulmones De Un Armadillo Del Centro De México, F. Agustín Jiménez-Ruiz, Rogelio Rosas-Valdez, Scott Lyell Gardner

Faculty Publications from the Harold W. Manter Laboratory of Parasitology

Twenty-four worms were collected from the bronchioles in both lungs of a male nine-banded armadillo Dasypus novemcinctus Linnaeus, 1758 captured in Teacalco, Morelos, Mexico. The worms, herein named Metathelazia mexicana n. sp., show a constriction in the esophagus at the level of the nerve ring; males of the species have 7 pairs of papillae, fewer than the other species in the genus. Metathelazia capsulata is the most similar species to Metathelazia mexicana; however, the latter has much shorter spicules. This is the fourth species in the genus known to occur in the New World.

Se recolectó un total de 24 ...

The First Molecular Phylogeny Of Buthidae (Scorpiones), Victor Fet, Benjamin Gantenbein, Alexander Gromov, Graeme Lowe, Wilson R. Lourenço

Euscorpius

No abstract provided.

Morphology Analysis Supports Presence Of More Than One Species In The “Euscorpius Carpathicus” Complex (Scorpiones: Euscorpiidae), Victor Fet, Michael E. Soleglad

Euscorpius

No abstract provided.

Two New Andean Species Of Brachistosternus Pocock (Scorpiones: Bothriuridae), Jose A. Ochoa, Louis E. Acosta

Euscorpius

No abstract provided.

Etudes On Iurids, V. Further Revision Of Iurus Thorell, 1876 (Scorpiones: Iuridae), With A Description Of A New Genus And Two New Species, Michael E. Soleglad, Victor Fet, František Kovařík, Ersen Aydın Yağmur

Euscorpius

Iurus populations from the Aegean area are studied, including the Greek islands of Crete, Karpathos, Kythira, Rhodes, and Samos. A new genus, Protoiurus gen. nov., and two new species, Protoiurus rhodiensis sp. nov. and P. stathiae sp. nov., are described. The two genera, Iurus and Protoiurus, are diagnosed by their hemispermatophore structure; a cladistic analysis based on this structure is presented. Genus Iurus Thorell, 1876 includes three species: I. dekanum, I. dufoureius, and I. kinzelbachi; genus Protoiurus includes five species: P. asiaticus comb. nov., P. kadleci comb. nov., P. kraepelini comb. nov., P. rhodiensis sp. nov., and P. stathiae sp ...

Euscorpiops Neradi Sp. N. From Thailand (Scorpiones: Euscorpiidae: Scorpiopinae), František Kovařík, Jana Plíšková, František Šťáhlavský

Euscorpius

Euscorpiops neradi sp. n. from Thailand is described and compared with other species of the genus Euscorpiops Vachon, 1980. It is the smallest species of the genus, with total length about 25 mm in both sexes. In E. neradi sp. n. external trichobothria on the patella number 16 (5 eb, 2 esb, 2 em, 3 est, 4 et) and ventral trichobothria on the patella number 6. Pedipalp fingers are flexed in males and straight in females.

Alloscorpiops Citadelle Sp. N. From Thailand (Scorpiones: Euscorpiidae: Scorpiopinae).

Euscorpius

No abstract provided.

Evolution Of Scorpion Orthobothriotaxy: A Cladistic Approach, Michael E. Soleglad, Victor Fet

Euscorpius

This study presents a cladistic analysis of the derivation of orthobothriotaxic patterns in scorpions. Included in this analysis are the original three orthobothriotaxic patterns defined by Vachon (1972, 1974), the pattern of the unique scorpion Pseudochactas ovchinnikovi Gromov, 1998, and two trichobothrial patterns of fossil scorpions, the Upper Carboniferous palaeopisthacanthids and the Lower Cretaceous archaeobuthids. An overview of all fossil scorpion material where trichobothria are reported is presented in detail. The approach used in this analysis is to model the existence of an individual trichobothrium, adopting the ‘absence of’, ‘petite size’ and ‘full size’ as incremental stages of a trichobothrium ...

Contributions To Scorpion Systematics. I. On Recent Changes In High-Level Taxonomy, Victor Fet, Michael E. Soleglad

Euscorpius

Prendini & Wheeler (2005) criticized the methods of phylogenetic analyses by Soleglad, Fet, and their coauthors, and executed an unprecedented taxonomic action: without analyzing any of these taxa, they performed a wholesale synonymization of four parvorders, eight superfamilies, one family, 11 subfamilies, eight tribes, two subtribes, and three genera (in total, 37 taxa) of scorpions, and made other taxonomic changes. No alternative new classification has been proposed (instead, they revert to a previous classification), and no results of original work on this subject by Prendini & Wheeler (2005) have been presented. Here, we reverse all taxonomic changes performed by Prendini & Wheeler (2005 ...

Etudes On Iurids, Iii. Revision Of The Genus Iurus Thorell, 1876 (Scorpiones: Iuridae), With A Description Of Two New Species From Turkey, František Kovařík, Victor Fet, Michael E. Soleglad, Ersen Aydın Yağmur

Euscorpius

No abstract provided.

Etudes On Iurids, Ii. Revision Of Genus Calchas Birula, 1899, With The Description Of Two New Species (Scorpiones: Iuridae), Victor Fet, Michael E. Soleglad, František Kovařík

Euscorpius

No abstract provided.

Ecological Niche Modeling Of Two Scorpion Species Mesobuthus Eupeus (C. L. Koch, 1839) And M. Phillipsii (Pocock, 1889) From The Iranian Plateau And Zagros Region (Arachnida: Scorpiones), Omid Mirshamsi

Euscorpius

Ecological niche modeling has allowed several advances in the process of species delimitation. In the present study, I used this method to evaluate the climatic divergence between two scorpion species, Mesobuthus eupeus and M. phillipsii. The ecological niche models (ENMs) were created based on presence-only data with the maximum entropy method. The created models, results of spatial analysis (PCA and Hotelling discriminant), and an identity test suggested that the divergence between these two species is associated with significant divergence in their ecological niches. The results of this study provide additional support for the taxonomic validity the studied species.

A New Species Of Tityus C. L. Koch, 1836 (Scorpiones: Buthidae) From Dominican Amber, Wilson R. Lourenço

Euscorpius

Tityus azari sp. n., a new species of fossil scorpion belonging to the genus Tityus C. L. Koch, 1836 is described based on a specimen in amber from the Dominican Republic. Although the new species can be associated with the extant fauna of the Neotropical region, it presents some particular morphological features such as the presence of sharp denticles on the edge of pedipalp fingers. Due to the incompleteness of the specimen it cannot be assigned to any precise extant subgenera. Once again, this discovery attests to a considerable degree of diversity in the Dominican amber-producing forests.

The Cretaceous Scorpion Genus, Archaeobuthus, Revisited (Scorpiones: Archaeobuthidae), Chris Baptista, Jorge A. Santiago-Blay, Victor Fet, Michael E. Soleglad

Euscorpius

No abstract provided.

The Scorpions Of Hainan Island, China (Arachnida: Scorpiones), Zhi-Yong Di, Zhi-Jian Cao, Ying-Liang Wu, Lin Zhu, Hui Liu, Wen-Xin Li

Euscorpius

The redescriptions and illustrations of three species, Isometrus (Isometrus) maculatus (DeGeer, 1778), Lychas mucronatus (Fabricius, 1798) (Buthidae), and Liocheles australasiae (Fabricius, 1775) (Hemiscorpiidae) from Hainan Island, China are presented. Distribution data and updated key of Hainan scorpions are provided.

Review Of The Subgenus Pandinurus Fet, 1997 With Descriptions Of Three New Species (Scorpiones, Scorpionidae, Pandinus)., František Kovařík

Euscorpius

Pandinus (Pandinurus) awashensis sp. n. from Ethiopia, P. (P.) somalilandus sp. n. from Somaliland, and P. (P.) lowei sp. n. from Democratic Republic of Congo are described and compared with other species of the subgenus. P. (P.) sudanicus Hirst, 1911 stat. n. previously considered a synonym of P. (P.) magrettii Borelli, 1901 is recognized as a valid species. New data on taxonomic characters and distribution of the subgenus Pandinurus are presented. Also presented are a map of distribution, photos of the localities and a key to species using hitherto unpublished characters of the tarsomere spination formula and sexual dimorphism.