Origin of the Helminth Community of an Exotic Invasive Lizard, the Brown Anole,<i>Anolis sagrei</i>(Squamata: Polychrotidae), in Southwestern Taiwan

Norval, Gerrut; Bursey, Charles R.; Goldberg, Stephen R.; Mao, Jean-Jay; Slater, Kerry

doi:10.2984/65.3.383

Cited by 10 publications

(10 citation statements)

References 10 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…We stored the entire gastrointestinal tract in 10% formalin, then sectioned lower gastrointestinal tracts into 1‐cm pieces and counted the total number of rectal nematodes (Atractidae) in all sections under a dissection scope. Atractid nematodes are viviparous, undergo direct development in the lower intestine of their host, and have a venereal mode of transmission between individual hosts (Norval et al ., ; Langford, Willobee & Isidoro, ). For the same subset of animals, we dissected the stomach and counted all visible nematodes (Physalopteridae).…”

Section: Methodsmentioning

confidence: 99%

Both sexes suffer increased parasitism and reduced energy storage as costs of reproduction in the brown anole,Anolis sagrei

Reedy

Cox

Chung

et al. 2015

Biol. J. Linn. Soc.

View full text Add to dashboard Cite

Sexual selection theory proposes that males suffer reduced immune function and increased parasitism as costs of expressing sexual signals. Life-history theory proposes that females suffer the same costs because of inherent trade-offs between reproduction and self-maintenance. Mechanistically, each theory invokes an energetic tradeoff, although few experiments have directly compared these costs of reproduction between the sexes as a result of fundamental sex differences in the nature of reproductive investment and a tendency for each theory to focus on a single sex. To test whether males and females experience comparable costs of reproduction in terms of energetics, immune function, and parasitism, we used gonadectomy to eliminate most aspects of reproductive investment in wild brown anole lizards (Anolis sagrei) of both sexes. We compared these nonreproductive males and females with intact, reproductive controls with respect to stored energy (fat bodies), immune function (swelling response to phytohemagglutinin), and the prevalence and intensity of infection by four types of parasite (gastric nematodes, intestinal nematodes, faecal coccidia, and ectoparasitic mites). Gonadectomized anoles experienced dramatic increases in fat storage that were accompanied by decreases in the prevalence of intestinal nematodes and in the intensity of coccidia infection. These costs of reproduction were comparable between males and females, although neither sex exhibited the predicted increase in immune function after gonadectomy. Our results suggest that, despite fundamental sex differences in the nature of reproductive investment, both male and female anoles experience similar costs of reproduction with respect to energy storage and some aspects of parasitism.

show abstract

Section: Methodsmentioning

confidence: 99%

Both sexes suffer increased parasitism and reduced energy storage as costs of reproduction in the brown anole,Anolis sagrei

Reedy

Cox

Chung

et al. 2015

Biol. J. Linn. Soc.

View full text Add to dashboard Cite

show abstract

“…It remained unknown how this species entered Taiwan, but we deduce that potting compost imported to the nursery likely contained eggs of this species, as was observed during its invasion onto Guana Island ( Perry et al 2006 ). The most likely source of this population is thought to originate from Florida, because of the similarity in parasite composition and mitochondrial sequences ( Kolbe et al 2004 , Norval et al 2011 ). In 2006, this species was first recorded in Hualien City ( Chang 2007 ), with a huge population in Chicingtan and several satellite populations such as Hualien City and the campus of Dong Hua University.…”

Section: Resultsmentioning

confidence: 99%

A check list and population trends of invasive amphibians and reptiles in Taiwan

Lee¹,

Chen²,

Shang³

et al. 2019

View full text Add to dashboard Cite

Invasive species have impacted biodiversity all around the world. Among various ecosystems, islands are most vulnerable to these impacts due to their high ratio of endemism, highly specialized adaptation, and isolated and unique fauna. As with other subtropical islands, Taiwan faces constant risk of biological invasions and is currently ranked as one of the countries most affected by invasive amphibians and reptiles. In this paper, a comprehensive checklist of all known exotic amphibians and reptiles is provided, including twelve species which have successfully colonized Taiwan and six species with a controversial status. We provide an update on the knowledge of all these species including their distribution, colonization history, threats to native animals, and population trends based on literature records, fauna surveys, and data collected during invasive species eradication and control programs. A list of species with high invasive potentials is also provided. This study reports, for the first time, a comprehensive survey of invasive herpetofauna in Taiwan, which should provide a valuable reference to other regions which might suffer from similar invasion risk.

show abstract

“…Comparative morphological data were obtained from the literature for Takydromus albomaculosus (Wang et al 2017), T. hani (Chou et al 2001), T. viridipunctatus , and T. luyeanus (Lue and Lin 2008), T. sikkimensis (Bhupathy et al 2009), T. madaensis (Bobrov 2013), T. sylvaticus (Pope 1928, 1929; Yang and Wang 2010), T. smaragdinus and T. toyamai (Takeda and Ota 1996); T. kuehnei (van Denburgh 1909; Arnold 1997; Norval et al 2012; Wang et al 2017), T. intermedius (Stejneger 1924; Wang et al 2017), T. amurensis , T. dorsalis , T. formosanus , T. hsuehshanensis , T. sauteri , T. stejnegeri , and T. tachydromoides (Takeda and Ota 1996; Lue and Lin 2008), T. sexlineatus , T. wolteri , T. septentrionalis , and T. khasiensis (Arnold 1997; Zhao et al 1999). All examined specimens are listed in Appendix I.…”

Section: Methodsmentioning

confidence: 99%

A new species of the genus Takydromus (Squamata, Lacertidae) from southwestern Guangdong, China

et al. 2019

View full text Add to dashboard Cite

A new species, Takydromus yunkaiensis J. Wang, Lyu, & Y.Y. Wang, sp. nov. is described based on a series of specimens collected from the Yunkaishan Nature Reserve located in the southern Yunkai Mountains, western Guangdong Province, China. The new species is a sister taxon to T. intermedius with a genetic divergence of 8.0–8.5% in the mitochondrial cytochrome b gene, and differs from all known congeners by a combination of the following morphological characters: (1) body size moderate, SVL 37.8–56.0 mm in males, 42.6–60.8 mm in females; (2) dorsal ground color brown; ventral surface green to yellow-green, but light blue-green on chin and throat, posteriorly green in adult males; (3) dorsolateral lines paired, strikingly yellowish-white bordered by black above and below, invisible or indistinct in juveniles and adult females; (4) flanks of body blackish brown with light brown marks in adult males; (5) presence of four pairs of chin-shields; (6) four supraoculars on each side; (7) presence of a row of supracilary granules that separate supracilaries from supraoculars; (8) two postnasals; (9) enlarged dorsal scales in six longitudinal rows on trunk of body, with strong keel; (10) enlarged ventral scales in six longitudinal rows, strongly keeled in males, smooth but outermost rows weakly keeled in females; (11) enlarged and keeled lateral scales in a row above ventrals; (12) femoral pores 2–3 on each side; (13) subdigital lamellae 20–23 under the fourth finger, 23–30 under the fourth toe; and (14) the first 2–3 subdigital lamellae under the fourth toe divided. The discovery of Takydromus yunkaiensissp. nov. brings the total number of species of this genus to 24, of which nine occur in mainland China.

show abstract

Origin of the Helminth Community of an Exotic Invasive Lizard, the Brown Anole,Anolis sagrei(Squamata: Polychrotidae), in Southwestern Taiwan

Cited by 10 publications

References 10 publications

Both sexes suffer increased parasitism and reduced energy storage as costs of reproduction in the brown anole,Anolis sagrei

Both sexes suffer increased parasitism and reduced energy storage as costs of reproduction in the brown anole,Anolis sagrei

A check list and population trends of invasive amphibians and reptiles in Taiwan

A new species of the genus Takydromus (Squamata, Lacertidae) from southwestern Guangdong, China

Contact Info

Product

Resources

About