Female reproductive cycles in the northernmost populations of the two gekkonid lizards, Hemidactylus frenatus and Lepidodactylus lugubris

1994 ◽  
Vol 9 (2) ◽  
pp. 121-130 ◽  
Author(s):  
Hidetoshi Ota
Keyword(s):  
Lepidodactylus Lugubris ◽  
Reproductive Cycles ◽  
Hemidactylus Frenatus

scholarly journals Lizards (Reptilia: Squamata) of the Corn Islands, Caribbean Nicaragua

Check List ◽  
2013 ◽  
Vol 9 (6) ◽  
pp. 1383 ◽  
Author(s):  
Javier Sunyer ◽  
Kirsten Elizabeth Nicholson ◽  
John Gerhardt Phillips ◽  
Jenny Ann Gubler ◽  
Lenin Alexander Obando
Keyword(s):  
Protected Areas ◽  
Human Population ◽  
Habitat Alteration ◽  
Lizard Species ◽  
Iguana Iguana ◽  
Caribbean Islands ◽  
Lepidodactylus Lugubris ◽  
Ctenosaura Similis ◽  
Hemidactylus Frenatus

The Corn Islands are two small Caribbean islands with the richest collection of endemic herpetofaunal taxa in Nicaragua. Despite increasing human population and associated habitat alteration, both islands lack protected areas. The lizard fauna of Great Corn Island consists of 14 species corresponding to nine families, and includes three endemic taxa. We collected three lizard species (Corytophanes cristatus, Gonatodes albogularis, and Hemidactylus frenatus) that were not previously recorded from that island. On Little Corn Island, where there were no previous records of lizards, we found seven species (Ctenosaura similis, Gonatodes albogularis, Hemidactylus frenatus, Holcosus undulatus, Iguana iguana, Lepidodactylus lugubris, and Norops unilobatus), all of which are also present on Great Corn Island.

Description of Isospora schlegeli sp.nov. (Apicomplexa: Eimeriidae) from gekkonid lizards in the South Pacific

1991 ◽  
Vol 69 (12) ◽  
pp. 3108-3110 ◽  
Author(s):  
Steve J. Upton ◽  
Kathy Hanley ◽  
Ted J. Case ◽  
Chris T. McAllister
Keyword(s):  
New Species ◽  
Polar Granule ◽  
South Pacific ◽  
Shape Index ◽  
The South ◽  
Type Host ◽  
Lepidodactylus Lugubris ◽  
Hemidactylus Frenatus ◽  
A New Species ◽  
Oocyst Residuum

A new species of coccidian was recovered from feces of Hemidactylus frenatus (type host) and Lepidodactylus lugubris from the South Pacific. Oocysts of Isospora schlegeli sp.nov. are subspherical, 17.8 × 15.8 (13.6–20.0 × 12.8–18.0) μm; shape index 1.13 (1.06–1.25). Micropyle and oocyst residuum absent, polar granule present. Sporocysts ovoidal, 10.0 × 7.5 (8.8–11.8 × 6.6–9.0) μm, with Stieda and substieda bodies; shape index 1.33 (1.20–1.51). Sporozoites each with anterior and posterior refractile bodies. In addition, oocysts of Eimeria furmani, Eimeria dixoni, and Isospora frenatus were collected from both the above hosts and an unnamed elongate Eimeria sp. of Yamamoto (K. Yamamoto. 1933. Fukuoka Igaku Zasshi. 26: 40–43) were seen in H. frenatus.

scholarly journals First record of the common house gecko Hemidactylus frenatus Schlegel, 1836 and distribution extension of Phyllodactylus reissii Peters, 1862 in the Galápagos

Check List ◽  
2011 ◽  
Vol 7 (4) ◽  
pp. 470 ◽  
Author(s):  
Omar Torres-Carvajal ◽  
Washington Tapia
Keyword(s):  
Invasive Species ◽  
Introduced Species ◽  
First Record ◽  
Santa Cruz ◽  
Lepidodactylus Lugubris ◽  
The Common ◽  
Hemidactylus Frenatus ◽  
Common House

Among introduced species in the Galápagos are three species of geckos – Gonatodes caudiscutatus, Lepidodactylus lugubris, Phyllodactylus reissii – occurring on the islands of Isabela, San Cristóbal, and Santa Cruz. Here we report the first record of a fourth invasive species of gecko from Isabela, as well as the first record of P. reissii from the same island. 

INDIRECT COMPETITION BETWEEN A RESIDENT UNISEXUAL AND AN INVADING BISEXUAL GECKO

Behaviour ◽  
2002 ◽  
Vol 139 (9) ◽  
pp. 1161-1173 ◽  
Author(s):  
Susan Brown ◽  
Deborah Ishii-Thoene ◽  
Roanne Lebrun ◽  
Jacqueline Yamasaki
Keyword(s):  
Food Competition ◽  
Food Resources ◽  
Exploitative Competition ◽  
Egg Development ◽  
Hiding Place ◽  
Lepidodactylus Lugubris ◽  
Competition For Food ◽  
Hemidactylus Frenatus

AbstractEstablished populations of the unisexual gecko, Lepidodactylus lugubris, decline around man-made lights when the bisexual gecko, Hemidactylus frenatus, invades the environment. Some of the decline in L. lugubris numbers could occur through the process of exploitative competition for food resources. Our experiments were designed to see if other variables were important in the decline. We found that L. lugubris were more likely to use a hiding platform in enclosures with 2 rather than 1 platform when conspecific or heterospecific pairs of geckos were housed in an enclosure. Additionally, when two H. frenatus were housed in the same enclosure, they maintained closer proximity to each other than when their cagemates were L. lugubris. L. lugubris developed and laid more eggs when housed with another L. lugubris than when housed with either a female or male H. frenatus. Most interestingly, L. lugubris housed in enclosures previously occupied by H. frenatus males required more time for egg development and laying than geckos housed in enclosures previously occupied by another L. lugubris. In conclusion, variables in addition to food competition may influence the declines in L. lugubris numbers when an area in which they are established is invaded by the bisexual gecko, H. frenatus. L. lugubris numbers may decline in response to their reluctance to share a hiding place with another gecko, leaving them more vulnerable to predators. Additionally, L. lugubris fecundity may be negatively affected by the exudates from H. frenatus femoral pores or the odors of their feces.

scholarly journals Abundant Citizen Science Data Reveal That the Peacock Butterfly Aglais io Recently Became Bivoltine in Belgium

Insects ◽  
2021 ◽  
Vol 12 (8) ◽  
pp. 683
Author(s):  
Marc Herremans ◽  
Karin Gielen ◽  
Jos Van Kerckhoven ◽  
Pieter Vanormelingen ◽  
Wim Veraghtert ◽  
...  
Keyword(s):  
Citizen Science ◽  
Western Europe ◽  
Environmental Changes ◽  
Early Summer ◽  
Science Data ◽  
The Public ◽  
Online Portal ◽  
Spring Generation ◽  
Reproductive Cycles ◽  
New Generation

The peacock butterfly is abundant and widespread in Europe. It is generally believed to be univoltine (one generation per year): adults born in summer overwinter and reappear again in spring to reproduce. However, recent flight patterns in western Europe mostly show three peaks during the year: a first one in spring (overwintering butterflies), a second one in early summer (offspring of the spring generation), and a third one in autumn. It was thus far unclear whether this autumn flight peak was a second new generation or consisted of butterflies flying again in autumn after a summer rest (aestivation). The life cycle of one of Europe’s most common butterflies is therefore still surprisingly inadequately understood. We used hundreds of thousands of observations and thousands of pictures submitted by naturalists from the public to the online portal observation.orgin Belgium and analyzed relations between flight patterns, condition (wear), reproductive cycles, peak abundances, and phenology to clarify the current life history. We demonstrate that peacocks have shifted towards two new generations per year in recent decades. Mass citizen science data in online portals has become increasingly important in tracking the response of biodiversity to rapid environmental changes such as climate change.

scholarly journals Year-round high abundances of the world’s smallest marine vertebrate (Schindleria) in the Red Sea and worldwide associations with lunar phases

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Vanessa Robitzch ◽  
Victor Molina-Valdivia ◽  
Jaiber J. Solano-Iguaran ◽  
Mauricio F. Landaeta ◽  
Michael L. Berumen
Keyword(s):  
Coral Reef ◽  
Reef Fish ◽  
Red Sea ◽  
Coral Reef Fish ◽  
Seasonal Temperature ◽  
Global Trends ◽  
Lunar Phases ◽  
Spatial Differences ◽  
New Moon ◽  
Reproductive Cycles

AbstractVery little is known about the ecology and biology of the smallest marine vertebrates, fishes in the genus Schindleria. Even though over half of named Schindleria species have been identified in the Red Sea, the collection of only very few specimens has been documented. Here, we assessed abundance patterns of nearly two thousand Red Sea long dorsal fin (LDF) adults and found evidence for putative seasonal and spatial differences, likely related to differing habitat and environmental conditions. The highest abundances were outside local seasonal temperature extremes and decoupled from peaks of coral reef fish recruitment. We also found evidence for global trends in abundances related to lunar cycles using our Red Sea data and that from a recently published large collection of specimens from the DANA Expedition (1928–1930). The abundance of adult LDF Schindleria in relation to lunar phases differed significantly, with most Schindleria caught outside the full moon, and mostly during the new moon in the Red Sea and the 3rd quarter moon in the DANA collection. We further suggest that the abundances of Schindleria at coral reefs may be related to reproductive cycles and that these cycles may be timed with the moon as back-calculations of hatch dates from otoliths from the Red Sea significantly resulted after the new moon, making Schindleria the fastest-lived coral reef fish with the shortest generation times. Schindleria could be the most numerous coral reef fish in the world, for which we encourage increased research.

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