scholarly journals A case of communal egg-laying of Gonatodes albogularis (Sauria, Sphaerodactylidae) in bromeliads (Poales, Bromeliaceae)

Herpetozoa ◽  
2019 ◽  
Vol 32 ◽  
pp. 45-49
Author(s):  
Valentina de los Ángeles Carvajal-Ocampo ◽  
María Camila Ángel-Vallejo ◽  
Paul David Alfonso Gutiérrez-Cárdenas ◽  
Fabiola Ospina-Bautista ◽  
Jaime Vicente Estévez Varón
Keyword(s):  
First Record ◽  
Egg Laying ◽  
Nesting Sites ◽  
Tank Bromeliad

The Neotropical Yellow-Headed Gecko Gonatodesalbogularis commonly use cavities in the trees as a microhabitat for egg-laying. Here, we present the first record of this species in Colombia using the tank bromeliad Tillandsiaelongata as nesting sites, along with the occurrence of communal egg-laying in that microhabitat.

scholarly journals Nesting and breeding attempts of Cecropis daurica (Laxmann, 1769) in Tunisia

2021 ◽  
Vol 29 (1) ◽  
pp. 186-191
Author(s):  
Mohsen Kalboussi
Keyword(s):  
First Record ◽  
Southern Europe ◽  
Nest Entrance ◽  
Breeding Area ◽  
Northwest Africa ◽  
Nesting Sites ◽  
The Mediterranean

Abstract During fieldworks in 2019, a pair of Red-rumped Swallows (Cecropis daurica) were seen building their nest (June) and one of them brooding (August). The pair was still present in the area by the end of September, while all other swallows left this breeding area. In June 2020, the nest entrance was destroyed and the nest was occupied by a pair of Passer sp. Another nest of C. daurica was found in an abandoned building but was completely destroyed. This observation is the first record concerning an attempt and failure of nesting of the species in Tunisia. The nesting area of the Red-rumped Swallow is extended to the Mediterranean in southern Europe and to northwest Africa. The nesting sites are described, and the extension of the nesting area is discussed in this work.

scholarly journals First record of oviposition event by Laemanctus longipes (Sauria: Corytophanidae) in Mexico

Caldasia ◽  
2018 ◽  
Vol 40 (2) ◽  
pp. 390-393
Author(s):  
Arturo González-Zamora ◽  
Sónia Sánchez-López ◽  
Christian A. Delfín-Alfonso ◽  
Edgar Ahmed Bello-Sánchez
Keyword(s):  
First Record ◽  
Egg Laying ◽  
Natural Habitats ◽  
Reptile Species ◽  
In The Wild

Oviposition in elusive reptiles has been poorly documented due to the difficulty in observing it in natural habitats. Here, we document the first egg-laying record in the Eastern Casque-headed Basilisk Laemanctus longipes in the wild. Our record adds novel information about the oviposition of this scarcely studied reptile species. 

Behavioural and Breeding-Habitat Related Aspects of Sperm Competition in Razorbills

Behaviour ◽  
1992 ◽  
Vol 123 (1-2) ◽  
pp. 1-26 ◽  
Author(s):  
Richard H. Wagner
Keyword(s):  
Sperm Competition ◽  
Breeding Site ◽  
Special Problem ◽  
Egg Laying ◽  
Breeding Habitat ◽  
Fertile Period ◽  
Colonial Species ◽  
Paternity Assurance ◽  
Nesting Sites ◽  
Copulation Behaviour

AbstractI observed razorbill copulation behaviour to examine the ability of males to assure their paternity in the presence of sperm competition. While males in colonial species are generally unable to guard their mates throughout the female's fertile period, male razorbills suffered a special problem in that females actively sought extra-pair copulations (EPCs) and did so in two separate locations, the colony and ledges outside the colony called "mating arenas". Most within-pair and extra-pair copulations were performed in the mating arenas (74% and 82%, respectively). Individuals were consistent in their attendance in one of the two arenas, depending upon the accessibility of the breeding site from the arena, and the attendance of other individuals from the same sub-colony. Individuals were also consistent in their occupation of specific sites within the arenas, and usually attended these sites between years. Attendance in the relatively small arenas brought individuals from the sparser colony into much closer proximity than when they attended their nesting sites. The higher density in the arenas was associated with females receiving EPC attempts three times more frequently upon arrival in the arenas than in the colony. Females resisted most EPC attempts, but a high proportion (50%) of females accepted at least one EPC prior to egg-laying. Mating arena attendance by males was aimed at obtaining EPCs when their mates were absent, and at attempting to assure their paternity when their mates were present. Paternity assurance was accomplished by a) inhibiting their mates from accepting EPCs, b) depriving other males access to the female, and c) copulating with the female frequently. Males did not guard their mates effectively in that they were absent from the mating arenas during a large proportion (34%) of their mates' arrivals. The principal male strategy for gaining paternity assurance was apparently to attempt frequent copulations with their mates. Males achieved cloacal contact (and presumably insemination) with their mates approximately 80 times during the 30 days preceding the laying of the single egg, and the number of days males attended the arenas was positively correlated with the number of

scholarly journals Breeding Performances of the European Blackbird (Turdus merula) in Morocco: Habitat Selection, Breeding Phenology, and Breeding Success

2021 ◽  
Vol 2021 ◽  
pp. 1-8
Author(s):  
Abderahim El Hassani ◽  
Ismail Mansouri ◽  
Wafae Squalli ◽  
Abdelbari El Agy ◽  
Amine Assouguem ◽  
...  
Keyword(s):  
Large Scale ◽  
Egg Laying ◽  
Medium Size ◽  
Apple Orchards ◽  
Detailed Data ◽  
Widespread Species ◽  
Turdus Merula ◽  
Nesting Sites ◽  
Nest Height

The European Blackbird (Turdus merula) is a widespread species. In Morocco, available knowledge on this species is limited to a few descriptive pieces of information with no detailed data provided. With climate change and the intensification of agricultural activities, the study of the breeding performances of this species is indispensable for management purposes. This study investigates breeding biology, nesting habitats, breeding chronology, and reproductive success of the European Blackbird in both apple orchards and surrounding woody vegetation at Ait Ayach (Morocco) between March and August 2016. We monitored weekly nest status, nesting sites, breeding dates, and failure factors. Results showed that the European Blackbird nests mainly in apple orchards, on Golden Delicious and Starkrimson Delicious trees. Nest height above the ground was 214.15 ± 0.09 cm. Blackbird nests were cup-shaped with medium size dimensions and built from twigs, including dry leaves, stems, and roots walled by the mud. Breeding activities started firstly by nest construction during the last week of April, secondly by egg laying during the first week of May, and thirdly by hatching during the second week of May. Among the 74 surveyed nests, 100% were active during the nesting phase and 88.38% of eggs have succeeded during the incubation phase. In total, 69.03% of chicks have been emancipated. In short, 15.9% of clutches were attacked by predators, 14.35% of clutches were failed due to nest desertion, and 8.75% of chicks were dead. Our study provides the first and only detailed data on reproductive parameters of the European Blackbird in Moroccan ecosystems. Data collected from this study provide valuable information for long-term monitoring of the Moroccan Blackbird population. Additionally, our data offer a possibility of large-scale comparative studies of the reproductive ecology of the Blackbird species.

scholarly journals Effect of sand granulometry on the egg hatchling success of the sea turtle Caretta caretta

2019 ◽  
Vol 14 (1) ◽  
pp. 43-54
Author(s):  
Maria Fernanda Tacchi ◽  
Fernanda Peres Quirino ◽  
Diego Júnior Martins Ferreira ◽  
Lílian Gomes Afonso ◽  
Federico Tognin ◽  
...  
Keyword(s):  
Negative Relationship ◽  
Fine Sand ◽  
Caretta Caretta ◽  
Sea Turtle ◽  
Egg Laying ◽  
Northeastern Brazil ◽  
Laying Date ◽  
Loggerhead Sea Turtle ◽  
Nesting Sites ◽  
Potential Alternative

The environmental characteristics of nesting sites of sea turtles may directly interfere with the egg hatchling success. The objective of the present study was to evaluate the factors that affect the success of hatchling in the nests of the loggerhead sea turtle (Caretta caretta). Data from 37 nests of C. caretta from the coast of Mata de São João, Bahia, northeastern Brazil, were obtained from TAMAR, Sauípe station. Samples of sand were collected in each nest to determine the granulometry. A significant negative relationship was found between the stillborn rate and the fine sand ratio (r2 = 0.119; p = 0.036), indicating that a larger fraction of fine sand had a positive effect on nest hatchling success. The egg laying date also had a significant influence on the rate of stillbirths (r2 = 0.163; p = 0.013), with a trend towards a higher stillbirth rate, the later the laying date of the eggs. There is indication that the transfer of eggs to sites with more favorable characteristics may be considered as a potential alternative to increase the hatchling success rate of C. caretta eggs.

scholarly journals Breeding behaviour and productivity of Black-necked crane (Grus nigricolis) in Ladakh, Indian Trans-Himalaya

2019 ◽  
Author(s):  
Pankaj Chandan ◽  
Tanveer Ahmed ◽  
Afifullah Khan
Keyword(s):  
Incubation Period ◽  
Early Morning ◽  
Recruitment Rate ◽  
Egg Laying ◽  
Nest Site Fidelity ◽  
Long Term Study ◽  
Grus Nigricollis ◽  
Nesting Sites ◽  
Late Evening ◽  
Increment Rate

AbstractA long-term study was conducted to understand some aspects of breeding biology of Black-necked crane (Grus nigricollis) in Changthang, Ladakh. Data on aspects such as the breeding season, courtship, mating, egg laying and incubation period, nest site fidelity, egg morphometry, breeding productivity and recruitment rate were collected between 2003 and 2012. Black-necked crane started arriving from last week of March to first half of April and showed fidelity at ten nesting sites. Courtship and mating peaked early morning (0700 hours), around noon (1100 hours) and in late evening (0600 hours) while the nest building at evening (1600 hours). The egg laying period initiated in May and extended up to July. The average incubation period was 33.88±0.3 days. Hatching success, nest survival rate and fledgling increment rate of the bird were 73.3%, 0.55 ± 0.03 and 0.41 ± 0.02 respectively with an overall breeding productivity of 0.73. The present population of Black-necked crane in Changthang, Ladakh seems to stable with an average recruitment rate of 15.7±1.4.

scholarly journals Nuevos registros de la ardilla voladora (Glaucomys volans) en Puebla: implicaciones de su presencia en áreas de aprovechamiento forestal

2015 ◽  
Vol 31 (2) ◽  
Author(s):  
Aarón Bueno-Cabrera ◽  
Noé Gil-Flores ◽  
Uriel Velázquez-Cerón ◽  
Carlos Olivera-Avila ◽  
A. Gabriela Colodner-Chamudis
Keyword(s):  
Forest Management ◽  
Management Practices ◽  
New Records ◽  
First Record ◽  
Glaucomys Volans ◽  
Locality Record ◽  
Management Units ◽  
Flying Squirrel ◽  
Nesting Sites ◽  
New Localities

We report two new localities for the flying squirrel (Glaucomys volans) in Puebla, Mexico. First reported from the state in 1997 based on a mummified specimen found in 1994, our new records are based on a total of seven specimens from two different localities in the Sierra Norte de Puebla, located at least 70 km NE from the first record and 14 km NE from the nearest locality record (Tepozan, Hidalgo). These specimens were found in communal forest management units and we recommend that forest management practices include protection of trees used as nesting sites.

scholarly journals Breeding biology of Bengal eyed turtle Morenia petersi (Anderson 1879) in Bangladesh

2015 ◽  
Vol 42 (2) ◽  
pp. 169-181
Author(s):  
Md Lokman Hossain ◽  
Shorab Uddin Sarker ◽  
Noor Jahan Sarker
Keyword(s):  
Incubation Period ◽  
Clutch Size ◽  
Breeding Season ◽  
Gravid Female ◽  
Gonad Development ◽  
Egg Laying ◽  
Nesting Sites ◽  
Fallow Lands ◽  
The Mean ◽  
Second Clutch

This study was conducted to determine the breeding season, gonad development, egg laying period, clutch size and other biological aspects of Bengal Eyed Turtle, Morenia petersi of Bangladesh. The egg-laying period was found between November and February. The nesting sites were elevated fallow lands in secluded areas. The female turtle laid all the mature eggs at a time for each clutch at night. A gravid female turtle laid two clutches of eggs in each breeding season and the mean clutch size was 9.7 ± 1.5 eggs and mean weight of each egg was 8.9 ± 1.3 g. The eggs are elongated in shape and whitish in colour. The mean incubation period was 119 ± 30 days. The incubation period of first clutch was the longer than the second clutch. The hatchlings emerged out between April and May. Hatchery success was found 56.8%. The percentage of weight gain and specific growth rate (SGR) by weight of hatchlings in the first year was greater than second and third year. Present investigation was made to explore the possibility to raise turtle farming in captive condition.Bangladesh J. Zool. 42(2): 169-181, 2014

First Record of Grasshopper Sparrow (Ammodramus savannarum) Breeding in the Grasslands of Durango, México, with Notes on Nesting Sites and Habitat

2020 ◽  
Vol 80 (1) ◽  
pp. 38
Author(s):  
Samuel Ignacio Arroyo-Arroyo ◽  
Martin Emilio Pereda-Solís ◽  
José Hugo Martínez-Guerrero ◽  
Daniel Sierra-Franco ◽  
Andrea Montes-Aldaba ◽  
...  
Keyword(s):  
First Record ◽  
Grasshopper Sparrow ◽  
Ammodramus Savannarum ◽  
Nesting Sites

Breeding Biology of the Puerto Rican Sharp-Shinned Hawk (Accipiter Striatus Venator)

The Auk ◽  
1988 ◽  
Vol 105 (4) ◽  
pp. 649-662 ◽  
Author(s):  
Carlos A. Delannoy ◽  
Alexander Cruz
Keyword(s):  
Puerto Rico ◽  
Reproductive Success ◽  
Breeding Population ◽  
Egg Laying ◽  
Breeding Biology ◽  
Breeding Cycle ◽  
Territorial Conflicts ◽  
Nesting Sites ◽  
Accipiter Striatus ◽  
Breeding Attempt

Abstract We studied the breeding biology of the Sharp-shinned Hawk (Accipiter striatus venator ) in Maricao forest of western Puerto Rico from 1978 to 1985. Sharp-shinned Hawks are year-round residents and establish nesting territories only during the breeding season, which coincides with the dry and beginning of the wet seasons. Nesting sites were occupied in December and January every year and reoccupancy rates were 50% or higher. Prolonged and intense territorial conflicts between mated and unmated males were common. The onset of egg-laying was in late March or early April approximately 3-4 months after occupancy of nesting sites. Laying of first clutches peaked in early April and spanned 38 days (n = 19 clutches). Laying of second clutches occurred irregularly and spanned 55 days (n = 8 clutches). Females renested only after the initial clutch or brood was lost. The incubation period was 32 days (n = 13 clutches), similar to the duration reported in temperate North America. Nestling females attained larger asymptotic mass than males, but the latter grew faster; although the slopes of the regression lines were statistically homogeneous. Males fledged at an average age of 28.2 days and females at 32.1 days. Young were slightly heavier than adults at fledging, but the wing chord and tail lengths were approximately 50% shorter than those of adults. Fledging occurred at the peak of prey abundance. The breeding cycle in Puerto Rico was approximately 2 months longer than that recorded in Oregon and Utah. The time that elapsed from occupancy of nesting sites to egg laying accounted for the differences. Juveniles departed from nesting sites when prey was still abundant but delivery rates had declined considerably. A total of 105 eggs was laid in 40 nests (average clutch size 2.6), of which 63% hatched and 47% of the nestlings fledged. A total of 0.8 young fledged per breeding attempt. Overall nest success was 29%, 36% (n = 33 nests) in first nesting attempts and 0% in second nesting attempts (n = 9 nests). Most reproductive losses in 28 nests resulted from nestling mortality from Philornis sp. (Diptera, Muscidae) (n = 9) and desertion of clutches (n = 11). Fecundity and reproductive success was lower in Puerto Rico than in Oregon, Utah, and Wyoming. Despite low reproductive success in Maricao forest, the breeding population did not decline during our study.

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