Nematode Infection of the Ventral Scales of the American Crocodile (Crocodylus acutus) and Morelet's Crocodile (Crocodylus moreletii) in Southern Belize

2011 ◽  
Vol 78 (2) ◽  
pp. 378-381 ◽  
Author(s):  
Marisa Tellez ◽  
Isabelle Paquet-Durand
Keyword(s):  
Nematode Infection ◽  
Crocodylus Acutus ◽  
American Crocodile ◽  
Morelet's Crocodile ◽  
Crocodylus Moreletii

scholarly journals Integrating molecular, phenotypic and environmental data to elucidate patterns of crocodile hybridization in Belize

2015 ◽  
Vol 2 (9) ◽  
pp. 150409 ◽  
Author(s):  
Evon R. Hekkala ◽  
Steven G. Platt ◽  
John B. Thorbjarnarson ◽  
Thomas R. Rainwater ◽  
Michael Tessler ◽  
...  
Keyword(s):  
Nuclear Dna ◽  
Molecular Data ◽  
Environmental Data ◽  
Phenotypic Data ◽  
Crocodylus Acutus ◽  
Breeding Habitats ◽  
American Crocodile ◽  
In Captivity ◽  
In The Wild ◽  
Morelet's Crocodile

The genus Crocodylus comprises 12 currently recognized species, many of which can be difficult to differentiate phenotypically. Interspecific hybridization among crocodiles is known to occur in captivity and has been documented between some species in the wild. The identification of hybrid individuals is of importance for management and monitoring of crocodilians, many of which are Convention on International Trade in Endangered Species (CITES) listed. In this study, both mitochondrial and nuclear DNA markers were evaluated for their use in confirming a suspected hybrid zone between American crocodile ( Crocodylus acutus ) and Morelet’s crocodile ( Crocodylus moreletii ) populations in southern Belize where individuals and nests exhibiting atypical phenotypic features had previously been observed. Patterns observed in both phenotypic and molecular data indicate possible behavioural and ecological characteristics associated with hybridization events. The results of the combined analyses found that the majority of suspected hybrid samples represent crosses between female C. acutus and male C. moreletii . Phenotypic data could statistically identify hybrids, although morphological overlap between hybrids and C. moreletii reduced reliability of identification based solely on field characters. Ecologically, C. acutus was exclusively found in saline waters, whereas hybrids and C. moreletii were largely absent in these conditions. A hypothesized correlation between unidirectional hybridization and destruction of C. acutus breeding habitats warrants additional research.

scholarly journals Factors influencing the occurrence of negative interactions between people and crocodilians in Mexico

Oryx ◽  
2021 ◽  
pp. 1-9
Author(s):  
Giovany Arturo González-Desales ◽  
Luis Sigler ◽  
Jesús García-Grajales ◽  
Pierre Charruau ◽  
Martha Mariela Zarco-González ◽  
...  
Keyword(s):  
Anthropogenic Activities ◽  
Biosphere Reserve ◽  
Rigorous Evaluation ◽  
Caiman Crocodilus ◽  
Crocodylus Acutus ◽  
American Crocodile ◽  
Nesting Sites ◽  
The Relationship ◽  
Nesting Season ◽  
Negative Interactions

Abstract Negative interactions between people and crocodilians have increased worldwide, but in Mexico there have been few systematic reports and no rigorous evaluation of this problem. We compiled information on negative interactions between people and the spectacled caiman Caiman crocodilus and American crocodile Crocodylus acutus from the Worldwide Crocodilian Attack Database for 1993–2018, and we investigated interactions in greater depth, through interviews with people in La Encrucijada Biosphere Reserve. We examined the relationship between the occurrence of negative interactions between people and C. acutus and the species' nesting season and abundance, and presence records. In Mexico, the frequency of negative interactions increases when anthropogenic activities occur close to nesting sites (< 30 km) and during the nesting season (February–September). In La Encrucijada, following negative interactions with crocodiles, the local inhabitants killed 30 crocodiles measuring > 2.5 m long in 2011–2012. The frequency of negative human–crocodilian interactions was not correlated with the abundance of crocodilians but was correlated with the number of presence records of crocodiles. Strategies to minimize these interactions include warnings at nesting sites, increased monitoring of anthropogenic activities during the nesting season, and management of nests to prevent them being destroyed by people.

scholarly journals Differences in distress: Variance and production of American Crocodile ( Crocodylus acutus ) distress calls in Belize

2020 ◽  
Vol 10 (18) ◽  
pp. 9624-9634
Author(s):  
Miriam Boucher ◽  
Marisa Tellez ◽  
James T. Anderson
Keyword(s):  
Crocodylus Acutus ◽  
American Crocodile ◽  
Distress Calls

Status and conservation of the American crocodile, Crocodylus acutus, in Belize

2000 ◽  
Vol 96 (1) ◽  
pp. 13-20 ◽  
Author(s):  
Steven G. Platt ◽  
John B. Thorbjarnarson
Keyword(s):  
Crocodylus Acutus ◽  
American Crocodile

Scalation of the American Crocodile,Crocodylus acutus(Crocodylidae, Crocodilia), from the Coastal Zone of Northern Belize

2010 ◽  
Vol 46 (2-3) ◽  
pp. 332-338 ◽  
Author(s):  
Steven G. Platt ◽  
John B. Thorbjarnarson ◽  
Thomas R. Rainwater
Keyword(s):  
Coastal Zone ◽  
Crocodylus Acutus ◽  
American Crocodile

The Nest Environment of the American Crocodile (Crocodylus acutus)

Copeia ◽  
1984 ◽  
Vol 1984 (1) ◽  
pp. 153 ◽  
Author(s):  
Peter L. Lutz ◽  
Ann Dunbar-Cooper
Keyword(s):  
Crocodylus Acutus ◽  
American Crocodile

Remarkable Movements of an American Crocodile (Crocodylus acutus) in Florida

2014 ◽  
Vol 13 (4) ◽  
pp. N52-N56 ◽  
Author(s):  
Michael S. Cherkiss ◽  
Frank J. Mazzotti ◽  
Lindsey Hord ◽  
Mario Aldecoa
Keyword(s):  
Crocodylus Acutus ◽  
American Crocodile
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