Composition and ecological patterns of snake assemblages in an Amazon-Cerrado Transition Zone in Brazil

ABSTRACT The present study encompasses the species composition and ecological characteristics of the snake community in a Cerrado-Amazon transition zone in Midwest of Brazil (state of Mato Grosso). The data were collected during six excursions to the "Tanguro" (study area) by visual encounter survey, pitfall traps with drift fences and non-systematic sampling. We collected 194 specimens, distributed in 34 species, 26 genera, and eight families. The most abundant species were Crotalus durissus Linnaeus, 1758 (n = 50), Philodryas olfersii (Lichtenstein, 1823) (n = 15), Philodryas nattereri Steindachner, 1870 (n = 13), Xenodon rabdocephalus (Wied, 1824) (n = 12), Lachesis muta (Linnaeus, 1766) (n = 10) and Erythrolamprus almadensis (Wagler, 1824) (n = 10). The composition of species found here represents a combination of Cerrado and Amazonian savanna fauna.

Proceedings of the American Academy of Arts and Sciences.

v. 22, new ser. v. 14 (1886)

Proceedings of the American Academy of Arts and Sciences.

v. 24, new ser. v. 16 (1888-1889)

Proceedings of the American Academy of Arts and Sciences.

v. 52 (1916-1917)

An ecological and comparative analysis of parasites in juvenile Mugil liza (Pisces, Mugilidae) from two sites in Samborombón bay, Argentina

ABSTRACT Mugil liza Valenciennes, 1836 is an economically important food fish and has been recommended for aquaculture in South America. A total of 278 fishes were collected in the spring and summer of 2009 and 2010. These fish were sorted into sample groups according to their size class. We used Bayesian statistics and 95% credible intervals for each parameter tested were calculated. Fish studied harbored a total of 15 different species of parasites. Diversity of parasite species found on Mugil liza was greatest at the S.R.C. collection site, but evidenced a lower species richness than at A.R. site. The 1st size fishes of both sites evidenced greater parasite diversity than either 2nd or 3rd size fish. Differences observed could be explained by the different use of habitat types at the two sites or differential susceptibility to infection by parasites. The dominance of D. fastigatainfluenced observed results of lower community diversity indexes. New works elucidating different parasite life cycles within juvenile and adults ofM. liza in Argentina, promise to be important for determining the risk of the parasitism by zoonotic metacercariae A. (P.) longa and use of this fish as food and an economic resource, and the possible use of mullet parasites in other promising fields as indicators of biodiversity, and/ or water contamination.

Proceedings of the American Academy of Arts and Sciences.

v. 4 (1857-1860)

Proceedings of the American Academy of Arts and Sciences.

v. 7 (1865-1868)

Proceedings of the American Academy of Arts and Sciences.

v. 55 (1919-1920)

Proceedings of the American Academy of Arts and Sciences.

v. 8 (1868-1873)

Proceedings of the American Academy of Arts and Sciences.

v. 2 (1848-1852)

Proceedings of the American Academy of Arts and Sciences.

v. 10, new ser. v. 2 (1874-1875)

Proceedings of the American Academy of Arts and Sciences.

v. 43 (1907-1908)

Proceedings of the American Academy of Arts and Sciences.

v. 57 (1921-1922)

Proceedings of the American Academy of Arts and Sciences.

v. 6 (1862-1865)

Proceedings of the American Academy of Arts and Sciences.

v. 3 (1852-1857)