Occurrence, Size, and Sexual Maturity of Long-Finned Squid (Loligo pealei) at Nova Scotia and Newfoundland, Canada

1990 ◽  
Vol 47 (9) ◽  
pp. 1830-1835 ◽  
Author(s):  
E. G. Dawe ◽  
J. C. Shears ◽  
N. E. Balch ◽  
R. K. O'Dor
Keyword(s):  
Nova Scotia ◽  
Sexual Maturity ◽  
Geographic Range ◽  
Biological Data ◽  
Species Range ◽  
Atlantic Canada ◽  
Loligo Pealei ◽  
Nova Scotian ◽  
Sexually Mature

A major extension of the geographic range of Loligo pealei, in quantitative as well as spatial aspects, is described. The species' range is extended northward and eastward to approximately 47°30′N: 53°06′W, based on its occurrence in Newfoundland inshore trap samples in the autumn of 1986. Biological data from these samples, as well as from collections from Nova Scotian inshore traps from 1974 to 1986, indicate that L. pealei becomes sexually mature and spawns in Nova Scotian waters but not at Newfoundland. Loligo pealei appears to be prevalent in Canadian waters at times when its sympatric competitor, the short-finned squid Illex illecehrosus, is not abundant. The reported catch of L. pealei in Atlantic Canada for 1986 was 67 t, which suggests that this species could possibly support a small Canadian fishery in some years.

Abdominal Width and Sexual Maturity of Female Lobsters on Canadian Atlantic Coast

1944 ◽  
Vol 6c (3) ◽  
pp. 281-290 ◽  
Author(s):  
Wilfred Templeman
Keyword(s):  
Nova Scotia ◽  
Sexual Maturity ◽  
Abdominal Segment ◽  
Atlantic Coast ◽  
Relative Width ◽  
Maritime Provinces ◽  
Nova Scotian

The relative width of the second abdominal segment was used for comparing onset of sexual maturity of female lobsters in 18 different localities of the Maritime Provinces, after establishing a correlation between them. Judging by the abdominal width, the smallest lobsters to carry eggs range from 17.6 to 22.6 cm. long, and the sizes when approximately half the female lobsters are mature range from 23.5 to 29.2 cm. in the whole southern part of the gulf of St. Lawrence and along the outer Nova Scotian coast at least as far as Jeddore; in southern Nova Scotia and Grand Manan the corresponding ranges in size are higher, being 29 to 32 cm. and 36.7 to 40.4 cm. respectively. Graphs are given showing the relative abdominal width in 189 berried lobsters.

Sexual maturity, reproductive season and fecundity of the spiny lobster Panulirus penicillatus from the Gulf of Eilat (Aqaba), Red Sea

1993 ◽  
Vol 44 (4) ◽  
pp. 527 ◽  
Author(s):  
I Plaut
Keyword(s):  
Red Sea ◽  
Sexual Maturity ◽  
Field Data ◽  
Carapace Length ◽  
Spiny Lobster ◽  
Geographic Range ◽  
Reproductive Season ◽  
Geographic Isolation ◽  
Gonadal Index ◽  
Sexually Mature

Panulirus penicillatus Olivier (1791) (Decapoda: Palinuridae) is widely distributed in the Indian and Pacific Oceans and is the most common spiny lobster in the Red Sea. Female lobsters (n =234), were collected on four occasions in 1986 from the coral reef of Dahab, 110 km south of Eilat, Israel. Field data and the gonadal index indicated that the reproductive season was from February to October, during which the females spawned 2-4 times. In nature, females became sexually mature at a carapace length (CL) of 50 mm. This result was confirmed by morphometric analysis of the regression between pleopodal exopodite length and carapace length. The number of eggs per spawn (E) was related to CL by the equation E=2.715 ×(CL)2.581. The incubation period of eggs was 35.5�1.0 days (�s.d.) at temperatures of 24-27�C in the aquarium. The results are compared with data on P. penicillatus from other parts of its geographic range, and the effect of geographic isolation on reproduction is discussed.

Local Differences in the Life History of the Lobster (Homarus americanus) on the Coast of the Maritime Provinces of Canada

1936 ◽  
Vol 2 (1) ◽  
pp. 41-88 ◽  
Author(s):  
W. Templeman
Keyword(s):  
Growth Rate ◽  
Life History ◽  
Nova Scotia ◽  
Sexual Maturity ◽  
Homarus Americanus ◽  
Summer Temperature ◽  
Maritime Provinces ◽  
Commercial Catch ◽  
History Of ◽  
Sexually Mature

The hatching and moulting of the lobster are earlier in waters with a high than in those with a lower summer temperature. Moulting is about one week later for each degree lower summer temperature. In such high temperature areas as Malpeque bay two moultings occur during the year in most lobsters between 14 and 22 cm. in length. In the whole southern gulf of St. Lawrence area female lobsters as small as 18 to 21 cm. in length may carry eggs, while in the Grand Manan area with a summer temperature 5 to 8 °C. lower, the smallest sexually mature females are about 34 cm. in length. The growth per moult of the female lobster falls considerably below that of the male when sexual maturity approaches, thus in the southern gulf of St. Lawrence the female growth rate slows down rapidly after 18 to 21 cm. and in southern Nova Scotia at about 30 cm. In the southern gulf area at small sizes more males than females appear in the commercial catch, at larger sizes more females and at very large sizes nearly all the lobsters caught are males. Average sizes of lobsters in the commercial catch are considerably smaller in the southern gulf area than in southern Nova Scotia and at Grand Manan.

Temporal Patterns of Acidification of Rivers in Nova Scotia and Newfoundland and their Relationship to Sulphate Emissions

1988 ◽  
Vol 23 (4) ◽  
pp. 532-541
Author(s):  
G. D. Howell ◽  
P.E.J. Green ◽  
C.A. Field ◽  
B. Freedman
Keyword(s):  
Statistical Analysis ◽  
Nova Scotia ◽  
Water Chemistry ◽  
Sulphur Dioxide ◽  
Low Ph ◽  
Hydrogen Ion ◽  
Atlantic Canada ◽  
Atmospheric Loading ◽  
Mineral Acids ◽  
Sulphur Dioxide Emission

Abstract Twenty-eight rivers in Atlantic Canada are sampled monthly, and have periods of record dating back as far as 1965. Statistical analysis of water chemistry for rivers in areas of Nova Scotia and Newfoundland that are believed to be sensitive to acidification has revealed that pH was significantly lower during the late 1960’s and early 1970’s. Annual hydrogen ion export for selected rivers was also greater during this period. This period of relatively low pH and large hydrogen ion export corresponds to a peak of North American sulphur dioxide emission, suggesting that these rivers may be responding to atmospheric loading of anthropogenic mineral acids.

Alternative environment activities on both sides of the Atlantic: A Canada-Ireland consideration and comparison

2021 ◽  
pp. 1356336X2098588
Author(s):  
Daniel B Robinson ◽  
Nathan Hall ◽  
José da Costa ◽  
Brent Bradford
Keyword(s):  
Nova Scotia ◽  
Administrative Support ◽  
Vigorous Physical Activity ◽  
Comparative Investigation ◽  
Data Sets ◽  
Online Questionnaire ◽  
Traditional Sports ◽  
Development Participation ◽  
Ice Water ◽  
Nova Scotian

Due to the overemphasis of traditional sports at the expense of other movement domains in physical education (PE) programmes, there is a need to consider what factors might enable or limit PE teachers’ incorporation of some of these other domains that can support student learning. The focus of this article is on one such marginalized domain – alternative environment activities (AEAs). AEAs can afford students a breadth of opportunities for moderate-to-vigorous physical activity in different environments (i.e. land, snow and ice, water, air) and improve environmental awareness and stewardship. This article reports on a comparative investigation of Nova Scotian (Canadian) and Irish PE teachers’ incorporation of AEAs in their PE programmes. To understand what similarities or differences might exist with respect to these PE teachers’ incorporation of AEAs, along with existing enablers and barriers, a self-selected sample of current PE teachers (Nova Scotia = 53; Ireland = 64) completed a 22-item online questionnaire. Descriptive and inferential statistical analyses were employed to conduct comparisons among the two data sets. PE teachers’ understandings of curricular requirements for AEAs were found to be an issue in both Nova Scotia and Ireland. Reported significant differences include: AEA-related professional development participation; most important factors for deciding not to include AEAs; and feelings of school administrative support towards AEA incorporation. Findings also suggest that various issues may be hindering incorporation of AEAs in PE programmes, and that some of these issues do differ based on where the PE programme is situated.

Eighteenth-Century Sierra Leone English

1999 ◽  
Vol 20 (1) ◽  
pp. 1-34 ◽  
Author(s):  
Michael Montgomery
Keyword(s):  
Eighteenth Century ◽  
African American ◽  
Nova Scotia ◽  
African Americans ◽  
Sierra Leone ◽  
American English ◽  
African American English ◽  
History Of ◽  
Nova Scotian

This essay examines the language of an expatriate community as found in letters and petitions written by African Americans who migrated to Sierra Leone by way of Nova Scotia in 1792. These documents provide some of the earliest first-hand evidence of African American English and contribute to debates about the history of that variety. The paper compares selected grammatical features in that variety to modern-day African Nova Scotian English for insights to the history of African American English and develops a case for the principled use of manuscript documents for reconstructing earlier stages of colloquial English.

Habitat and breeding cycle of the Least Sandpiper (Calidris minutilla) on Sable Island, Nova Scotia

1983 ◽  
Vol 61 (12) ◽  
pp. 2880-2898 ◽  
Author(s):  
Edward H. Miller
Keyword(s):  
Nova Scotia ◽  
Parental Behavior ◽  
Late Summer ◽  
Species Range ◽  
Larus Argentatus ◽  
Breeding Cycle ◽  
Herring Gulls ◽  
Egg Incubation ◽  
Breeding Failure

Sable Island, Nova Scotia, is the southernmost significant nesting area of the Least Sandpiper. Many birds nest around a single pond complex, which supports a lush vegetation that is heavily grazed by horses. Nests occur there and in nearby dry, sparsely vegetated habitat. Birds start arriving by mid-May (males first), and clutches (including replacement clutches) are completed in a period of 4–5 weeks, from late May to late June. Most eggs are laid in the morning, at intervals averaging 1.2 days. Incubation increases gradually through laying and is ~100% beginning with the last egg. Incubation lasts 20–21 days. Nest and chick mortality is high, mostly due to predation by Herring Gulls (Larus argentatus). Mortality of siblings is contagious. Females which nest successfully begin to migrate south by late June, followed by successful males in early July; individuals of both sexes are seen for about 3 days after the completion of parental behavior. Unsuccessful breeders leave earlier, and fledglings later. On average, males are seen for about 10 days and females for about 7 days following final breeding failure. Adults and fledglings tend to flock assortatively in late summer. General features of the breeding cycle seem to be highly conservative throughout the species' range.

STUDIES ON THE APOIDEA OF WESTERN NOVA SCOTIA WITH SPECIAL REFERENCE TO VISITORS TO APPLE BLOOM

1933 ◽  
Vol 9 (5) ◽  
pp. 443-457 ◽  
Author(s):  
C. E. Atwood
Keyword(s):  
Nova Scotia ◽  
Special Reference ◽  
Social Organization ◽  
Life Histories ◽  
Pupal Stage ◽  
Simple Type ◽  
Nest Construction ◽  
Wild Bees ◽  
Males And Females ◽  
Nova Scotian

This paper describes the results of studies on the wild bees of Nova Scotia, which were carried out in connection with apple pollination investigations in the Annapolis-Cornwallis Valley, Nova Scotia.The biology of the Apoidea in general is reviewed from the literature, and a list of bees taken on apple bloom is given. As the members of the genera Halictus and Andrena were found to be the most important native pollinators, the greater part of the paper is devoted to accounts of the habits and life histories of representative species.The members of the genus Andrena were found to have a simple type, such as is generally found among solitary bees. The females provision the nest and then die; the larvae develop to the pupal stage in their underground cells, then emerge as adults the following season. All Nova Scotian species studied were one-generation forms.The bees of the genus Halictus show a primitive social organization, more complex in some species than in others. The first brood consists of females only, which are apparently sterile and work at nest construction, the gathering of pollen, etc. They are followed later in the season by a brood of males and females; these females, after being fertilized, hibernate for the winter, while the males die in the fall. The hibernating habits of different species are described, and notes are given on some parasites and inquilines of the two genera.

Exteroceptive Factors, Sexual Maturation and Reproduction in the Female Rat

1979 ◽  
Vol 13 (3) ◽  
pp. 283-286 ◽  
Author(s):  
M. L. Norris ◽  
C. E. Adams
Keyword(s):  
Reproductive Performance ◽  
Sexual Maturation ◽  
Sexual Maturity ◽  
Mature Male ◽  
Female Rat ◽  
Vaginal Opening ◽  
Sexually Mature

Summary Keeping a sexually mature male with a weanling female rat advanced neither the time of vaginal opening nor that of 1st oestrus. In 2 of 3 experiments females kept singly after weaning reached sexual maturity significantly earlier than did grouped females. The reproductive performance of females mated at 1st oestrus was not significantly different from that of older primiparae. 26 rats gave birth to an average of 9·3 young at 59·5 days of age, and 22 of them reared 96% of the young to weaning.

scholarly journals Reptilia, Serpentes, Dipsadidae, Gomesophis brasiliensis (Gomes, 1918): distribution extension in state of Santa Catarina, Brazil

Check List ◽  
2010 ◽  
Vol 6 (3) ◽  
pp. 414 ◽  
Author(s):  
Vanessa Barbisan Fortes ◽  
Elaine Maria Lucas ◽  
Vinícius Matheus Caldart
Keyword(s):  
Rio Grande ◽  
Wide Distribution ◽  
Geographic Range ◽  
Species Range ◽  
Rio Grande Do Sul ◽  
Aquatic Habitats ◽  
The West ◽  
Santa Catarina ◽  
Distrito Federal ◽  
South Brazil

The Brazilian burrowing snake, Gomesophis brasiliensis, occurs in aquatic habitats such as swamps, from Minas Gerais and Distrito Federal until Rio Grande do Sul. In spite of this wide distribution, the species’ geographic range still remains unclear. This note reports the occurrence of G. brasiliensis in the municipality of Vargem Bonita, state of Santa Catarina, south Brazil, extending the species’ range ca. 80 km to the west in this state.

Sign in / Sign up

Export Citation Format

Share Document