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1.
Gene ; 766: 145118, 2021 Jan 15.
Artigo em Inglês | MEDLINE | ID: mdl-32896588

RESUMO

Insulin-like growth factor 1 (IGF1) is a multifunctional cell proliferation regulator that plays a critical role in regulating animal growth and development. In this study, the expression level of IGF1 gene in different tissues of Dezhou donkey in different periods was investigated by RT-qPCR. Meanwhile, two mutation sites were identified within the IGF1 gene and its effect on body size traits of Dezhou donkey was analysed. The results showed that the expression level of the adult donkey IGF1 gene in heart, liver, spleen, lung, renal and gastric tissues is higher than that of the young donkeys, but the young donkeys are significantly higher in muscle tissues than the adult donkeys. The IGF1-1 and IGF1-2 loci showed a trend that the GG mutant was larger than other genotypes in the growth traits of both male and female donkeys, among which the IGF1-1 loci had a significant association with the chest circumference and chest depth of male donkeys (P < 0.05), and the IGF1-2 loci had a significant association with the chest circumference of female donkeys. Haplotype combination Hap1Hap1 (GG-GG) showed a greater tendency than Hap2Hap2 (AA-GG) combination in terms of growth traits, reflecting that the results were consistent with the analysis results of genotypes, which also proved the analysis results of genotypes and growth traits had certain reliability. In summary, the IGF1 gene is a candidate gene for growth and development, and its polymorphisms can be used as the molecular markers for Dezhou donkey breeding.


Assuntos
Tamanho Corporal/genética , Equidae/genética , Fator de Crescimento Insulin-Like I/genética , Transcriptoma/genética , Animais , Cruzamento/métodos , Feminino , Genótipo , Haplótipos/genética , Masculino , Fenótipo , Polimorfismo de Nucleotídeo Único/genética
2.
Ecol Lett ; 24(1): 20-26, 2021 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-33029888

RESUMO

Parents faced with a predator must choose between their own safety versus taking care of their offspring. Each choice can have fitness costs. Life-history theory predicts that longer-lived species should be less willing than shorter-lived species to return to care for their offspring after a predator disturbance because they have more opportunities to reproduce in the future. We increased adult predation risk during incubation for 40 bird species in north temperate, tropical, and south temperate latitudes. We found that species with higher adult survival probabilities were more cautious, waiting longer before returning to the nest to provide care. Contrary to other studies, we also found that parents were more risk averse and waited longer to return in smaller than larger species, likely reflecting greater vulnerability of smaller species. Ultimately, the relative risk a predator poses to a species and the probability of future reproduction predict parental risk taking across the world.


Assuntos
Comportamento de Nidação , Comportamento Predatório , Animais , Tamanho Corporal , Probabilidade , Reprodução , Assunção de Riscos
3.
Ecol Lett ; 24(2): 298-309, 2021 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-33205909

RESUMO

How species coexistence (mathematical 'feasibility') in food webs emerges from species' trophic interactions remains a long-standing open question. Here we investigate how structure (network topology and body-size structure) and behaviour (foraging strategy and spatial dimensionality of interactions) interactively affect feasibility in food webs. Metabolically-constrained modelling of food-web dynamics based on whole-organism consumption revealed that feasibility is promoted in systems dominated by large-eat-small foraging (consumers eating smaller resources) whenever (1) many top consumers are present, (2) grazing or sit-and-wait foraging strategies are common, and (3) species engage in two-dimensional interactions. Congruently, the first two conditions were associated with dominance of large-eat-small foraging in 74 well-resolved (primarily aquatic) real-world food webs. Our findings provide a new, mechanistic understanding of how behavioural properties can modulate the effects of structural properties on species coexistence in food webs, and suggest that 'being feasible' constrains the spectra of behavioural and structural properties seen in natural food webs.


Assuntos
Cadeia Alimentar , Comportamento Predatório , Animais , Tamanho Corporal , Modelos Biológicos
4.
Anim Sci J ; 91(1): e13491, 2020 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-33337571

RESUMO

The objectives of this study were to compare the genetic parameters for calving difficulty (CD), which were treated as both a calf trait (CD_calf) and as a dam trait (CD_dam), and to clarify genetic relationships of these CDs with body size traits of calves at birth and carcass traits. In total, the CD records and calf body measurements of 2,258 Japanese Black cattle heifers were used in this study, in addition to the carcass records of 4,300 feedlot steers and heifers. Direct heritability of CD_calf (0.44) was higher than maternal heritability of CD_calf (0.30), as well as CD_dam heritability (0.25). Direct genetic correlations between CD_calf and calf body size were moderate to strongly positive (0.64 to 0.81). The correlations between EBVs of CDs and carcass weight were also positive (0.30 to 0.64). These positive relationships showed that genetically improving CD (reducing dystocia) could produce smaller calves and carcasses. In contrast, the correlations between CDs and beef marbling score were weak, suggesting that improving CD would not influence meat quality traits. Fitting an animal model to CD_calf could be more preferred to fitting the model to CD_dam, because the former could separate the genetic effects of dams and calves.


Assuntos
Peso ao Nascer/genética , Tamanho Corporal/genética , Bovinos/genética , Bovinos/fisiologia , Qualidade dos Alimentos , Característica Quantitativa Herdável , Carne Vermelha , Reprodução/genética , Animais , Bovinos/anatomia & histologia , Feminino , Masculino , Gravidez
5.
Zootaxa ; 4890(3): zootaxa.4890.3.11, 2020 Dec 03.
Artigo em Inglês | MEDLINE | ID: mdl-33311125

RESUMO

Rutaraphes Jaloszynski was proposed for an unusual species discovered on Shikoku, Japan. Rutaraphes shikokuensis Jaloszynski has a unique aedeagus, with an asymmetrical median lobe, lacking parameres, and the diaphragm to which the internal muscles are attached is situated not sub-medially, sub-basally, or basally, as in most genera of Stenichnini, but sub-apically, and nearly transverse in relation to the long axis of the aedeagus. It is here confirmed that this highly unusual structure was not a teratology in the sole known specimen, because the newly described Rutaraphes taiwanicus sp. n. shares similar genital structures. The new species occurs on northern Taiwan, and differs from R. shikokuensis in (among others) male modifications of the head. The new discovery extends the known range of Rutaraphes over 1500 km SW, suggesting that also the islands of the Ryukyus may be inhabited by this rare genus.


Assuntos
Besouros , Distribuição Animal , Estruturas Animais , Animais , Tamanho Corporal , Masculino , Tamanho do Órgão , Taiwan
6.
Zootaxa ; 4878(2): zootaxa.4878.2.5, 2020 Nov 13.
Artigo em Inglês | MEDLINE | ID: mdl-33311156

RESUMO

We describe a new species of the Scinax catharinae group from one of the last remaining fragments of Atlantic Forest in northeastern Minas Gerais. The new species is distinguished from most species of the group mainly by having the mucronate snout in dorsal view, the unique light-yellow coloration on the gular surface in life contrasting with its overall color pattern, and the m. depressor mandibulae with an origin on the dorsal fascia at the level of the m. dorsalis scapulae. These two latter features are novelties in the diagnosis of Scinax species. The new species is currently known only from municipality of Santa Maria do Salto, state of Minas Gerais, Brazil. This locality is a remaining fragment of Atlantic Forest and has a peculiar geomorphic feature that has been poorly sampled so far.


Assuntos
Anuros , Floresta Úmida , Animais , Tamanho Corporal , Brasil , Tamanho do Órgão
7.
Zootaxa ; 4881(3): zootaxa.4881.3.7, 2020 Nov 20.
Artigo em Inglês | MEDLINE | ID: mdl-33311305

RESUMO

Two new species of cave-adapted ground beetles are described and illustrated from Sichuan Province, southwestern China: Jujiroa zhouchaoi sp. nov. from the calcareous conglomerate cave Shenxian Dong in Mt. Zhaogong (Dujiangyan, Chengdu) and Pterostichus (Huaius) hanwang sp. nov. from the limestone cave Hanwang Dong (Chaotian, Guangyuan). A new locality for Jujiroa deliciola Uéno and Kishimoto, 2001 is given. Keys to species of the genus Jujiroa Uéno, 1952 and the subgenus Huaius Tian and Huang, 2019 (in Tian et al. 2019) are also provided.


Assuntos
Besouros , Distribuição Animal , Estruturas Animais , Animais , Tamanho Corporal , China , Tamanho do Órgão
8.
Zootaxa ; 4881(3): zootaxa.4881.3.8, 2020 Nov 20.
Artigo em Inglês | MEDLINE | ID: mdl-33311306

RESUMO

The present paper deals with the revised description of some lesser known silent-slender crickets of Euscyrtinae (Orthoptera: Gryllidae) from the tropical hilly tracts of India. Besides, we describe a new species, Euscyrtus tubus sp. nov., and report the occurrence of Euscyrtodes ogatai (Shiraki, 1930) from India.


Assuntos
Gryllidae , Ortópteros , Distribuição Animal , Estruturas Animais , Animais , Tamanho Corporal , Índia
9.
Zootaxa ; 4881(3): zootaxa.4881.3.10, 2020 Nov 20.
Artigo em Inglês | MEDLINE | ID: mdl-33311308

RESUMO

Over a half century ago, Stenichnus barnevillei (Reitter) was 'redescribed' by Herbert Franz based on misidentified specimens, in fact belonging to an undescribed species. A year later the misidentification was discovered, and the name Stenichnus goriciensis was proposed for this species. The holotype was rediscovered only recently, and as a result of comparative study, S. goriciensis is here placed as a junior synonym of S. styriacus. Characters that were used to differentiate these two species in previous literature are discussed and recognized as based on errors. Stenichnus styriacus is redescribed.


Assuntos
Besouros , Distribuição Animal , Estruturas Animais , Animais , Tamanho Corporal , Tamanho do Órgão
10.
Zootaxa ; 4869(3): zootaxa.4869.3.4, 2020 Nov 03.
Artigo em Inglês | MEDLINE | ID: mdl-33311351

RESUMO

Two species of axiid shrimp are reported from sublittoral to upper bathyal waters around the Ogasawara Islands, Japan. The first, Bouvieraxius keiensis Sakai, 1992, is recorded from Japanese waters for the first time, although it is known widely from the southwestern Pacific to western Indian Ocean. Taxonomic problems of this taxon are pointed out. The second, Manaxius aurantiaca n. sp., is described based on a single female specimen from the Kaikata Seamount (at a depth of 299-335 m). It has rounded pleura of the pleomeres 2-5, and is notable in the lack of spines on the upper margin of the cheliped palms. In this regard, the new species closely resembles M. iro Poore, 2020. Differentiating characters between M. aurantiaca n. sp. and M. iro are discussed.


Assuntos
Decápodes , Distribuição Animal , Estruturas Animais , Animais , Tamanho Corporal , Feminino , Ilhas , Japão , Tamanho do Órgão
11.
Zootaxa ; 4868(1): zootaxa.4868.1.9, 2020 Oct 23.
Artigo em Inglês | MEDLINE | ID: mdl-33311414

RESUMO

The monotypic genus Paracyriothasastes Breuning, 1978 was established for Cereopsius marmoreus Pascoe, 1857 from Malaysia. Uraechoides Breuning, 1981 was established for Uraechoides vivesi Breuning, 1981 also from Malaysia, and is currently composed of the type species and U. taomeiae Hayashi, Nara Yu, 1995, the latter from China (Taiwan) (Tavakilian Chevillotte 2020).


Assuntos
Besouros , Estruturas Animais , Animais , Tamanho Corporal , Tamanho do Órgão
12.
Zootaxa ; 4894(2): zootaxa.4894.2.8, 2020 Dec 09.
Artigo em Inglês | MEDLINE | ID: mdl-33311087

RESUMO

A new species and a key to 10 species of the genus Lemba Huang, 1983, namely Lemba wushanensis sp. nov. is described in this paper from China. The new species is similar to L. sichuanensis Ma et al, 1994, but differs from the latter by the length of tegmen 2.7 times width in male, length of interspace of mesosternum 3.5 times width in male, posterior margin of epiproct straight; ancorae of epiphallus not inward tilt and vertical diameter 1.8 times subocular furrow in female. The type specimens are deposited in the Northwest Plateau Institute of Biology, Chinese Academy of Sciences, Xining, China.


Assuntos
Gafanhotos , Ortópteros , Distribuição Animal , Estruturas Animais , Animais , Tamanho Corporal , China , Feminino , Masculino , Tamanho do Órgão
13.
Zootaxa ; 4890(1): zootaxa.4890.1.7, 2020 Dec 01.
Artigo em Inglês | MEDLINE | ID: mdl-33311248

RESUMO

The phylogenetic tree of Chinese Trigonidiinae species was reconstructed based on one mitochondrial fragment (COI) and two nuclear ribosomal loci (18S and 28S). According to the concatenated trees, we define four genus groups with high nodal supports. The subgenus Paratrigonidium should be upgraded to genus status. A new genus Abstrigonidium He gen. nov. is established and Paratrigonidium chloropodum is selected as type species (A. chloropodum comb. nov.). Amusurgus (Paranaxipha) fujianensis is moved to genus Sectus as S. fujianensis comb. nov. A new species named as Emerasoma curvicerca He gen. et sp. nov. is reported. It differs from other genera by asymmetric genitalia, and lacking stridulatory files and mirror. The type specimens are deposited in Museum of Biology, East China Normal University (ECNU).


Assuntos
Gryllidae , Ortópteros , Distribuição Animal , Estruturas Animais , Animais , Tamanho Corporal , China , Masculino , Tamanho do Órgão , Filogenia , Cauda
14.
Zootaxa ; 4877(1): zootaxa.4877.1.10, 2020 Nov 09.
Artigo em Inglês | MEDLINE | ID: mdl-33311333

RESUMO

In this study, we describe one new species, Sichuana feicui He sp. nov., from Mao County, Sichuan Province, China. This new species is different from S. cryptospina in the shape of cercus, and the color pattern of hind femur. The type specimens are deposited in Museum of Biology, East China Normal University (ECNU).


Assuntos
Ortópteros , Distribuição Animal , Estruturas Animais , Animais , Tamanho Corporal , China , Masculino , Tamanho do Órgão
15.
Zootaxa ; 4869(1): zootaxa.4869.1.5, 2020 Oct 30.
Artigo em Inglês | MEDLINE | ID: mdl-33311373

RESUMO

A new genus (Mirigryllus He gen. nov.) with a new species (M. nigrus He sp. nov.) is reported from Zhejiang, China. The morphology and calling songs of the new species are provided. The features that different from tribe Modicogryllini spp. include long and thin posterior epiphallic lobes, ectoparameron transparent. Two genes, COI and 18S, of 11 Modicogryllini species were sequenced, and phylogenetic tree was reconstructed. The results support the validation of the new species. The type specimens are deposited in Museum of Biology, East China Normal University (ECNU).


Assuntos
Gryllidae , Ortópteros , Distribuição Animal , Estruturas Animais , Animais , Tamanho Corporal , China , Masculino , Tamanho do Órgão , Filogenia
16.
Zootaxa ; 4869(1): zootaxa.4869.1.8, 2020 Oct 30.
Artigo em Inglês | MEDLINE | ID: mdl-33311376

RESUMO

A new species of the genus Sulcohumpacris Yin, Yin et Cao, 2017 i.e. Sulcohumpacris wuanensis sp. nov. is described in this paper from China. The new species is similar to Sulcohumpacris hebeiensis Yin, Yin et Cao, 2017 but differs from latter by median keel of pronotum cut by hind sulcus slightly, tegmen of male cover 2/3 tympanum, length of Krauss' organ 1.8 times of width in female, apex of subgenital plate of male point, cercus of male narrow at base, lower margin of Epiphallus with large projection in the middle and hind knee of female not curved at lower margin. Type specimens are deposited in the College of Life Sciences, Hebei University, Baoding, China.


Assuntos
Ortópteros , Distribuição Animal , Estruturas Animais , Animais , Tamanho Corporal , China , Feminino , Masculino , Tamanho do Órgão
17.
Zootaxa ; 4895(1): zootaxa.4895.1.9, 2020 Dec 14.
Artigo em Inglês | MEDLINE | ID: mdl-33311059

RESUMO

One new species of Eremus Brunner von Wattenwyl, 1888 is reported from Southwest China, Yunnan. The morphological features are described, and provided with colored charts of classification features. Up to now, only two species have been described in the Chinese fauna. Type specimen is deposited in the Institute of Entomoceutics Research, Dali University (DUIER).


Assuntos
Ortópteros , Distribuição Animal , Estruturas Animais , Animais , Tamanho Corporal , China , Tamanho do Órgão , Universidades
18.
Zootaxa ; 4877(3): zootaxa.4877.3.2, 2020 Nov 11.
Artigo em Inglês | MEDLINE | ID: mdl-33311177

RESUMO

A new species of Lumbrineridae, Helmutneris vadum n. sp., is described from shallow waters near Lizard Island, Great Barrier Reef, Queensland, Australia. The new species differs from two other known species of Helmutneris by having bidentate maxillae III and no ventral limbate chaetae. Sequences of the fragments of COI and 16S rDNA for two specimens including the holotype are deposited in GenBank. A key for three species of Helmutneris known to date is provided.


Assuntos
Anelídeos , Poliquetos , Distribuição Animal , Estruturas Animais , Animais , Austrália , Tamanho Corporal , Ecossistema , Ilhas , Tamanho do Órgão
19.
Zootaxa ; 4861(4): zootaxa.4861.4.6, 2020 Oct 20.
Artigo em Inglês | MEDLINE | ID: mdl-33311209

RESUMO

Two highly modified new species of cave-adapted trechine beetles are described from Guizhou Province and Guangxi Zhuang Autonomous Region: Sinaphaenops (Sinaphaenops) chengguangyuani n. sp. (Guizhou: Longli: cave Shuijing Dong), belonging to the banshanicus species group of the genus Sinaphaenops Uéno Wang, 1991; Giraffaphaenops brevicephalus n. sp. (Guangxi: Leye: cave Dalongguan Dong), being the third species of the genus Giraffaphaenops Deuve, 2002, with a shorter but broader head than its congeners. Keys to identify the species of the banshanicus species group and the genus Giraffaphaenops are provided respectively.


Assuntos
Besouros , Distribuição Animal , Estruturas Animais , Animais , Tamanho Corporal , China , Tamanho do Órgão
20.
Zootaxa ; 4885(3): zootaxa.4885.3.8, 2020 Nov 26.
Artigo em Inglês | MEDLINE | ID: mdl-33311273

RESUMO

In this study, a new species of the genus Gymnaetoides Qin, Liu Li, 2017, namely Gymnaetoides polaoensis sp. nov., from a karst cave in Guizhou Province, China is described. This new species is the first cave-dwelling species belonging to the genus Gymnaetoides. The morphological photographs of the males of this new cave species are provided.


Assuntos
Ortópteros , Distribuição Animal , Estruturas Animais , Animais , Tamanho Corporal , Cavernas , China , Masculino , Tamanho do Órgão
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